1
|
Wang S, Li F, Zhao X, Pan Y. Sustainable Oily Liquid-Proof Passive Cooling (SOC) Textile for Personal Thermal Management. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403249. [PMID: 38934358 DOI: 10.1002/smll.202403249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Indexed: 06/28/2024]
Abstract
Sweat passive-cooling textiles with asymmetric wettabilities on different sides offer an effective and low-energy consumption solution to personal thermal management in extreme thermal environments. However, the sweat-wicking and the cooling abilities decrease when the textile is contaminated by low-surface tension oily liquid fouling. The integration of anti-oily liquid fouling and sweat-wicking abilities on textile involves resolving the contradiction between hydrophilic and oleophobic properties and seeking eco-friendly short-chain fluorides to reduce the surface energy. Herein, a sustainable oily liquid-proof passive cooling (SOC) textile for personal thermal management is proposed. The SOC textile is obtained by applying a fluoride-free hydrophobic coating layer to one side of the high thermal conductive superoleophobic/superhydrophilic basal textile, which is fabricated using eco-friendly short-chain fluoride. The SOC textile preserves the anti-oily liquid fouling property even after 2000 abrasion cycles. Experimental test revealed that the SOC textile exhibits a cooling effect of ≈5 °C compared with the cotton textile, and the up to 70% reduction in sweating rate under the constant metabolic heat production rates. The configuration of the SOC textile would inspire the future design of intelligent textiles for personal thermal management, and the proposed strategy have implications for fabrication of eco-friendly oil-water separation materials.
Collapse
Affiliation(s)
- Shuai Wang
- State Key Laboratory of Robotics and Systems, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education Harbin Institute of Technology, Harbin, 150001, China
| | - Feiran Li
- State Key Laboratory of Robotics and Systems, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education Harbin Institute of Technology, Harbin, 150001, China
| | - Xuezeng Zhao
- State Key Laboratory of Robotics and Systems, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education Harbin Institute of Technology, Harbin, 150001, China
| | - Yunlu Pan
- State Key Laboratory of Robotics and Systems, School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education Harbin Institute of Technology, Harbin, 150001, China
| |
Collapse
|
2
|
Sarubbi J, Martínez-Burnes J, Ghezzi MD, Olmos-Hernandez A, Lendez PA, Ceriani MC, Hernández-Avalos I. Hypothalamic Neuromodulation and Control of the Dermal Surface Temperature of Livestock during Hyperthermia. Animals (Basel) 2024; 14:1745. [PMID: 38929364 PMCID: PMC11200636 DOI: 10.3390/ani14121745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Hyperthermia elicits several physiological and behavioral responses in livestock to restore thermal neutrality. Among these responses, vasodilation and sweating help to reduce core body temperature by increasing heat dissipation by radiation and evaporation. Thermoregulatory behaviors such as increasing standing time, reducing feed intake, shade-seeking, and limiting locomotor activity also increase heat loss. These mechanisms are elicited by the connection between peripheral thermoreceptors and cerebral centers, such as the preoptic area of the hypothalamus. Considering the importance of this thermoregulatory pathway, this review aims to discuss the hypothalamic control of hyperthermia in livestock, including the main physiological and behavioral changes that animals adopt to maintain their thermal stability.
Collapse
Affiliation(s)
- Juliana Sarubbi
- Department of Animal Science, Federal University of Santa Maria, Av. Independência, Palmeira das Missões 3751, RS, Brazil
| | - Julio Martínez-Burnes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City 87000, Mexico
| | - Marcelo Daniel Ghezzi
- Animal Welfare Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina;
| | - Adriana Olmos-Hernandez
- Division of Biotechnology—Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City 14389, Mexico
| | - Pamela Anahí Lendez
- Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires, CIVETAN, UNCPBA-CICPBA-CONICET (UNCPBA), University Campus, Tandil 7000, Argentina
| | - María Carolina Ceriani
- Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires, CIVETAN, UNCPBA-CICPBA-CONICET (UNCPBA), University Campus, Tandil 7000, Argentina
| | - Ismael Hernández-Avalos
- Facultad de Estudios Superiores Cuautitlán (FESC), Universidad Nacional Autónoma de Mexico (UNAM), Cuautitlán 54714, Mexico
| |
Collapse
|
3
|
Wong CK, Hsiao RC, Chen MH, Yen CF. Predictive value of hyperhidrosis for the incidence of type 2 diabetes mellitus: A population-based cohort study in Taiwan. Kaohsiung J Med Sci 2024; 40:315-317. [PMID: 38146691 DOI: 10.1002/kjm2.12796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 12/27/2023] Open
Affiliation(s)
- Chih-Kai Wong
- Department of Dermatology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ray C Hsiao
- Department of Psychiatry, Children's Hospital and Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington, USA
| | - Mu-Hong Chen
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Cheng-Fang Yen
- Department of Psychiatry, School of Medicine College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| |
Collapse
|
4
|
Gonzalez DE, Lanham SN, Martin SE, Cleveland RE, Wilson TE, Langford EL, Abel MG. Firefighter Health: A Narrative Review of Occupational Threats and Countermeasures. Healthcare (Basel) 2024; 12:440. [PMID: 38391814 PMCID: PMC10888326 DOI: 10.3390/healthcare12040440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
Structural firefighters are responsible for protecting properties and saving lives during emergency operations. Despite efforts to prepare firefighters for these hazardous occupational demands, the unfortunate reality is that the incidence of health morbidities is increasing within the fire service. Specifically, cardiovascular disease, cancer, and mental health disorders are among the most documented morbidities in firefighters. Pubmed and Google Scholar search engines were used to identify peer-reviewed English language manuscripts that evaluated firefighters' occupational health threats, allostatic factors associated with their occurrence, and evidence-based strategies to mitigate their impact. This narrative review provides fire departments, practitioners, and researchers with evidence-based practices to enhance firefighters' health.
Collapse
Affiliation(s)
- Drew E Gonzalez
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX 77845, USA
| | - Sarah N Lanham
- First Responder Research Laboratory, Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY 40506, USA
| | - Steven E Martin
- Department of Kinesiology and Sport Management, Texas A&M University, College Station, TX 77845, USA
| | - Richard E Cleveland
- Department of Leadership, Technology, and Human Development, Georgia Southern University, Statesboro, GA 30458, USA
| | - Thad E Wilson
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Emily L Langford
- First Responder Research Laboratory, Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY 40506, USA
- Department of Health and Human Sciences, University of Montevallo, Montevallo, AL 35115, USA
| | - Mark G Abel
- First Responder Research Laboratory, Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY 40506, USA
| |
Collapse
|
5
|
Davydov DА, Budylin GS, Baev AV, Vaipan DV, Seredenina EM, Kamalov AA, Shirshin EA. Skin dehydration monitoring with optical spectroscopy allows assessment of water content in the organism: Thermal and physical loads, diuretic therapy. JOURNAL OF BIOPHOTONICS 2024:e202300509. [PMID: 38185913 DOI: 10.1002/jbio.202300509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024]
Abstract
This study investigates the relationship between body hydration levels and skin hydration using spatially resolved diffuse reflectance spectroscopy. The research involved monitoring skin dehydration and rehydration under various conditions, including thermal and physical loads on healthy volunteers, and diuretic therapy in patients with edema syndrome. Findings indicate a correlation between body mass reduction and skin hydration: a 1% loss in body mass corresponds to a 10% decrease in skin hydration. During thermal stress, water absorption at 970 nm decreased monotonically without recovery. Physical activity resulted in approximately 10% changes in skin water content within 20 min, followed by rehydration. Patients with edema syndrome exhibited the most substantial decrease in water absorption amplitude, at nearly 30%, during diuretic treatment. These results support optical spectroscopy as a non-invasive tool for assessing body hydration, with implications for developing portable hydration monitoring devices for clinical and sports applications.
Collapse
Affiliation(s)
- Denis А Davydov
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Gleb S Budylin
- Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Moscow, Russia
- Institute of Spectroscopy of the Russian Academy of Sciences, Moscow, Russia
| | - Alexey V Baev
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
| | - Daniil V Vaipan
- Medical Research and Educational Center, Lomonosov Moscow State University, Moscow, Russia
| | - Elena M Seredenina
- Medical Research and Educational Center, Lomonosov Moscow State University, Moscow, Russia
| | - Armais A Kamalov
- Medical Research and Educational Center, Lomonosov Moscow State University, Moscow, Russia
| | - Evgeny A Shirshin
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
- Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Moscow, Russia
| |
Collapse
|
6
|
Notley SR, Akerman AP, D'Souza AW, Meade RD, McCourt ER, McCormick JJ, Kenny GP. Dose-dependent nonthermal modulation of whole body heat exchange during dynamic exercise in humans. Am J Physiol Regul Integr Comp Physiol 2024; 326:R53-R65. [PMID: 37955132 DOI: 10.1152/ajpregu.00203.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
To maintain heat balance during exercise, humans rely on skin blood flow and sweating to facilitate whole body dry and evaporative heat exchange. These responses are modulated by the rise in body temperature (thermal factors), as well as several nonthermal factors implicated in the cardiovascular response to exercise (i.e., central command, mechanoreceptors, and metaboreceptors). However, the way these nonthermal factors interact with thermal factors to maintain heat balance remains poorly understood. We therefore used direct calorimetry to quantify the effects of dose-dependent increases in the activation of these nonthermal stimuli on whole body dry and evaporative heat exchange during dynamic exercise. In a randomized crossover design, eight participants performed 45-min cycling at a fixed metabolic heat production (200 W/m2) in warm, dry conditions (30°C, 20% relative humidity) on four separate occasions, differing only in the level of lower-limb compression applied via bilateral thigh cuffs pressurized to 0, 30, 60, or 90 mmHg. This model provoked increments in nonthermal activation while ensuring the heat loss required to balance heat production was matched across trials. At end-exercise, dry heat loss was 2 W/m2 [1, 3] lower per 30-mmHg pressure increment (P = 0.006), whereas evaporative heat loss was elevated 5 W/m2 [3, 7] with each pressure increment (P < 0.001). Body heat storage and esophageal temperature did not differ across conditions (both P ≥ 0.600). Our findings indicate that the nonthermal factors engaged during exercise exert dose-dependent, opposing effects on whole body dry and evaporative heat exchange, which do not significantly alter heat balance.NEW & NOTEWORTHY To maintain heat balance during exercise, humans rely on skin blood flow and sweating to facilitate dry and evaporative heat exchange. These responses are modulated by body temperatures (thermal factors) and several nonthermal factors (e.g., central command, metaboreceptors), although the way thermal and nonthermal factors interact to regulate body temperature is poorly understood. We demonstrate that nonthermal factors exert dose-dependent, opposing effects on dry and evaporative heat loss, without altering heat storage during dynamic exercise.
Collapse
Affiliation(s)
- Sean R Notley
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Ashley P Akerman
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Andrew W D'Souza
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Robert D Meade
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Emma R McCourt
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - James J McCormick
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| |
Collapse
|
7
|
Notley SR, Mitchell D, Taylor NAS. A century of exercise physiology: concepts that ignited the study of human thermoregulation. Part 3: Heat and cold tolerance during exercise. Eur J Appl Physiol 2024; 124:1-145. [PMID: 37796292 DOI: 10.1007/s00421-023-05276-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 07/04/2023] [Indexed: 10/06/2023]
Abstract
In this third installment of our four-part historical series, we evaluate contributions that shaped our understanding of heat and cold stress during occupational and athletic pursuits. Our first topic concerns how we tolerate, and sometimes fail to tolerate, exercise-heat stress. By 1900, physical activity with clothing- and climate-induced evaporative impediments led to an extraordinarily high incidence of heat stroke within the military. Fortunately, deep-body temperatures > 40 °C were not always fatal. Thirty years later, water immersion and patient treatments mimicking sweat evaporation were found to be effective, with the adage of cool first, transport later being adopted. We gradually acquired an understanding of thermoeffector function during heat storage, and learned about challenges to other regulatory mechanisms. In our second topic, we explore cold tolerance and intolerance. By the 1930s, hypothermia was known to reduce cutaneous circulation, particularly at the extremities, conserving body heat. Cold-induced vasodilatation hindered heat conservation, but it was protective. Increased metabolic heat production followed, driven by shivering and non-shivering thermogenesis, even during exercise and work. Physical endurance and shivering could both be compromised by hypoglycaemia. Later, treatments for hypothermia and cold injuries were refined, and the thermal after-drop was explained. In our final topic, we critique the numerous indices developed in attempts to numerically rate hot and cold stresses. The criteria for an effective thermal stress index were established by the 1930s. However, few indices satisfied those requirements, either then or now, and the surviving indices, including the unvalidated Wet-Bulb Globe-Thermometer index, do not fully predict thermal strain.
Collapse
Affiliation(s)
- Sean R Notley
- Defence Science and Technology Group, Department of Defence, Melbourne, Australia
- School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Duncan Mitchell
- Brain Function Research Group, School of Physiology, University of the Witwatersrand, Johannesburg, South Africa
- School of Human Sciences, University of Western Australia, Crawley, Australia
| | - Nigel A S Taylor
- Research Institute of Human Ecology, College of Human Ecology, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
8
|
Nakashima K, Kato H, Kurata R, Qianwen L, Hayakawa T, Okada F, Fujita F, Nakagawa Y, Tanemura A, Murota H, Katayama I, Sekiguchi K. Gap junction-mediated contraction of myoepithelial cells induces the peristaltic transport of sweat in human eccrine glands. Commun Biol 2023; 6:1175. [PMID: 37980435 PMCID: PMC10657463 DOI: 10.1038/s42003-023-05557-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/08/2023] [Indexed: 11/20/2023] Open
Abstract
Eccrine sweat glands play an essential role in regulating body temperature. Sweat is produced in the coiled secretory portion of the gland, which is surrounded by obliquely aligned myoepithelial cells; the sweat is then peristaltically transported to the skin surface. Myoepithelial cells are contractile and have been implicated in sweat transport, but how myoepithelial cells contract and transport sweat remains unexplored. Here, we perform ex vivo live imaging of an isolated human eccrine gland and demonstrate that cholinergic stimulation induces dynamic contractile motion of the coiled secretory duct that is driven by gap junction-mediated contraction of myoepithelial cells. The contraction of the secretory duct occurs segmentally, and it is most prominent in the region surrounded by nerve fibers, followed by distension-contraction sequences of the excretory duct. Overall, our ex vivo live imaging approach provides evidence of the contractile function of myoepithelial cells in peristaltic sweat secretion from human eccrine glands.
Collapse
Affiliation(s)
- Kie Nakashima
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Hiroko Kato
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Ryuichiro Kurata
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Luo Qianwen
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Tomohisa Hayakawa
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - Fumihiro Okada
- Fundamental Research Institute, Mandom Corporation, Osaka, Japan
| | - Fumitaka Fujita
- Laboratory of Advanced Cosmetic Science, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.
- Fundamental Research Institute, Mandom Corporation, Osaka, Japan.
| | - Yukinobu Nakagawa
- Department of Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Atsushi Tanemura
- Department of Dermatology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Hiroyuki Murota
- Department of Dermatology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Ichiro Katayama
- Department of Dermatology, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Kiyotoshi Sekiguchi
- Division of Matrixome Research and Application, Institute for Protein Research, Osaka University, Osaka, Japan.
| |
Collapse
|
9
|
Notley SR, Mitchell D, Taylor NAS. A century of exercise physiology: concepts that ignited the study of human thermoregulation. Part 1: Foundational principles and theories of regulation. Eur J Appl Physiol 2023; 123:2379-2459. [PMID: 37702789 DOI: 10.1007/s00421-023-05272-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 06/30/2023] [Indexed: 09/14/2023]
Abstract
This contribution is the first of a four-part, historical series encompassing foundational principles, mechanistic hypotheses and supported facts concerning human thermoregulation during athletic and occupational pursuits, as understood 100 years ago and now. Herein, the emphasis is upon the physical and physiological principles underlying thermoregulation, the goal of which is thermal homeostasis (homeothermy). As one of many homeostatic processes affected by exercise, thermoregulation shares, and competes for, physiological resources. The impact of that sharing is revealed through the physiological measurements that we take (Part 2), in the physiological responses to the thermal stresses to which we are exposed (Part 3) and in the adaptations that increase our tolerance to those stresses (Part 4). Exercising muscles impose our most-powerful heat stress, and the physiological avenues for redistributing heat, and for balancing heat exchange with the environment, must adhere to the laws of physics. The first principles of internal and external heat exchange were established before 1900, yet their full significance is not always recognised. Those physiological processes are governed by a thermoregulatory centre, which employs feedback and feedforward control, and which functions as far more than a thermostat with a set-point, as once was thought. The hypothalamus, today established firmly as the neural seat of thermoregulation, does not regulate deep-body temperature alone, but an integrated temperature to which thermoreceptors from all over the body contribute, including the skin and probably the muscles. No work factor needs to be invoked to explain how body temperature is stabilised during exercise.
Collapse
Affiliation(s)
- Sean R Notley
- Defence Science and Technology Group, Department of Defence, Melbourne, Australia
- School of Human Kinetics, University of Ottawa, Ottawa, Canada
| | - Duncan Mitchell
- Brain Function Research Group, School of Physiology, University of the Witwatersrand, Johannesburg, South Africa
- School of Human Sciences, University of Western Australia, Crawley, Australia
| | - Nigel A S Taylor
- Research Institute of Human Ecology, College of Human Ecology, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
10
|
Croxton R, Joyce H. The effect of household corrosive substances on latent fingermark development in the context of deliberate corrosive substance attacks. J Forensic Sci 2023; 68:1991-2001. [PMID: 37491701 DOI: 10.1111/1556-4029.15343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/09/2023] [Accepted: 07/11/2023] [Indexed: 07/27/2023]
Abstract
Corrosive substance attacks (CSA) are a prevalent issue in the UK with 525 offenses involving a corrosive substance reported to the police in the year ending March 2022. Easy availability, low cost, and concealability in public are common reasons for choosing a corrosive substance as a weapon. The Metropolitan Police revealed that 68% of 1849 CSA cases resulted in no suspect identified or evidential difficulties. There is limited research into the effect of corrosive substances on latent fingermarks. This study aimed to determine the potential for fingermarks to be recovered from surfaces exposed to a household corrosive substance within the context of a deliberate CSA. Natural and sebaceous-loaded fingermarks were exposed to Domestos bleach, Harpic limescale remover (hydrochloric acid-based) and lemon juice. Harpic limescale remover had the most detrimental effect, with only 7.1% of fingermarks (n = 378) exposed being identifiable (defined as sufficient clear ridge detail for identification) after enhancement, followed by bleach with only 10.3% of fingermarks (n = 378) identifiable. Lemon juice had the least detrimental effect on fingermarks, with 40.5% fingermarks (n = 378) identifiable compared to 53.4% for the controls (not exposed to any substance; n = 378). Throughout the study, fewer natural fingermarks were identifiable after exposure to corrosive substances compared to sebaceous fingermarks which was as expected. Overall, this study demonstrated that there is potential to recover latent fingermarks, depending on their composition, following exposure to a household corrosive substance. This area warrants further research to establish best practice to maximize the potential to recover identifiable fingermarks.
Collapse
Affiliation(s)
- Ruth Croxton
- Department of Applied Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - Holly Joyce
- Department of Applied Sciences, Northumbria University, Newcastle upon Tyne, UK
| |
Collapse
|
11
|
Zhang Y, Hou C, Zhao P, Zeng X, Liu Y, Chen J, Gao Y, Wang C, Hou J, Huo D. Fe Single-Atom Nanozyme-Modified Wearable Hydrogel Patch for Precise Analysis of Uric Acid at Rest. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43541-43549. [PMID: 37694575 DOI: 10.1021/acsami.3c08978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Resting sweat analysis could provide unique insight into the metabolic levels of physiological and pathological states. However, the low secretion rate of resting sweat and the low concentration of metabolic molecules pose challenges for the development of noninvasive wearable sensors. Here, we demonstrated a wearable patch for the precise analysis of uric acid at rest. Fe single-atom nanozymes (FeSAs) with excellent electrocatalytic activity were used to develop a sensor for selective catalysis of uric acid (UA, 1-425 μM), and the catalytic mechanism of UA was later explored by density functional theory. In addition, polyaniline was integrated into the wearable patch for pH detection; thus, accurate analysis of sweat UA molecules can be achieved by pH calibration. Then, we explored the possibility of collecting resting sweat with different ratios of agarose hydrogels to reduce the sweat accumulation time. Finally, the possibility of a wearable patch for accurate UA detection in volunteer sweat samples was experimentally verified. We believe that our work provides novel insights and ideas for the analysis of resting sweat using wearable devices, further driving advancements in the field of personalized medicine.
Collapse
Affiliation(s)
- Yong Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Peng Zhao
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Xin Zeng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Yiyi Liu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Jian Chen
- Chongqing University Three Gorges Hospital, Chongqing 404000, PR China
| | - Yifan Gao
- School of Electrical Engineering, Chongqing University of Science and Technology, Chongqing401331, PR China
| | - Cuncun Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Jingzhou Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
- Postdoctoral Research Station, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
- Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, PR China
| |
Collapse
|
12
|
Perschinka F, Köglberger P, Klein SJ, Joannidis M. [Hyponatremia : Etiology, diagnosis and acute therapy]. Med Klin Intensivmed Notfmed 2023; 118:505-517. [PMID: 37646802 PMCID: PMC10501960 DOI: 10.1007/s00063-023-01049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 05/09/2023] [Accepted: 05/15/2023] [Indexed: 09/01/2023]
Abstract
Hyponatremia is one of the most common electrolyte disorders in emergency departments and hospitalized patients. Serum sodium concentration is controlled by osmoregulation and volume regulation. Both pathways are regulated via the release of antidiuretic hormone (ADH). Syndrome of inappropriate release of ADH (SIADH) may be caused by neoplasms or pneumonia but may also be triggered by drug use or drug abuse. Excessive fluid intake may also result in a decrease in serum sodium concentration. Rapid alteration in serum sodium concentration leads to cell swelling or cell shrinkage, which primarily causes neurological symptoms. The dynamics of development of hyponatremia and its duration are crucial. In addition to blood testing, a clinical examination and urine analysis are essential in the differential diagnosis of hyponatremia.
Collapse
Affiliation(s)
- Fabian Perschinka
- Gemeinsame Einrichtung Internistische Intensiv- und Notfallmedizin, Department für Innere Medizin, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Österreich
| | - Paul Köglberger
- Gemeinsame Einrichtung Internistische Intensiv- und Notfallmedizin, Department für Innere Medizin, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Österreich
- Institut für Anästhesiologie und Intensivmedizin, Klinikum Wels, Grieskirchnerstraße 42, 4600, Wels, Österreich
| | - Sebastian J Klein
- Gemeinsame Einrichtung Internistische Intensiv- und Notfallmedizin, Department für Innere Medizin, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Österreich
| | - Michael Joannidis
- Gemeinsame Einrichtung Internistische Intensiv- und Notfallmedizin, Department für Innere Medizin, Medizinische Universität Innsbruck, Anichstraße 35, 6020, Innsbruck, Österreich.
| |
Collapse
|
13
|
Chaudhari N, Strutton PH, Wickham AJ, McGregor AH, Mullington CJ. Heat stress associated with aerosol PPE and its impact. Occup Med (Lond) 2023; 73:120-127. [PMID: 36282602 PMCID: PMC10132207 DOI: 10.1093/occmed/kqac114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Aerosol personal protective equipment (PPE) is subjectively reported to negatively impact healthcare workers' performance and well-being, but this has not been assessed objectively. AIMS This randomized controlled crossover study aimed to quantify the heat stress associated with aerosol PPE and to investigate its impact upon mood, cognitive and motor function, and task performance. METHODS Sixteen healthy, young, lean participants (eight males) undertook an exercise protocol, which simulated the metabolic expenditure of hospital work: once wearing aerosol PPE (PPE visit) and once wearing standard surgical attire (control visit). Participants walked on a treadmill for 2 h followed by 30-min rest. Core temperature, heart rate, urine specific gravity, weight, grip strength, mood (Bond-Lader scale) and task performance (Intubation of a Manikin) were recorded. Values are between-visit mean (standard deviation) differences. RESULTS On the PPE visit core temperature (+0.2 (0.3)°C; P < 0.01), heart rate (+12 (13) bpm; P < 0.001), urine specific gravity (+0.003 (0.005); P < 0.05) and intubation task time (+50 (81) s; P < 0.01) were greater than on the control visit; and alertness (-14 (21) mm; P < 0.001), contentment (-14 (15) mm; P < 0.001) and grip strength (-4 (4) N; P < 0.01) were less. CONCLUSIONS This study demonstrates that wearing aerosol PPE in a simulated hospital environment results in heat exhaustion and has a negative impact upon mood, motor function, and task performance. Whilst wearing PPE is important to prevent disease transmission, strategies should be developed to limit its impact upon healthcare workers' performance and well-being.
Collapse
Affiliation(s)
- N Chaudhari
- MSk Lab, Imperial College London, London W12 0BZ, UK
| | - P H Strutton
- MSk Lab, Imperial College London, London W12 0BZ, UK
| | - A J Wickham
- Theatres and Anaesthesia, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| | - A H McGregor
- MSk Lab, Imperial College London, London W12 0BZ, UK
| | - C J Mullington
- MSk Lab, Imperial College London, London W12 0BZ, UK
- Theatres and Anaesthesia, Imperial College Healthcare NHS Trust, London W2 1NY, UK
| |
Collapse
|
14
|
Silva AGD, Albuquerque MR, Brito CJ, Stroppa GM, Oliveira SAF, Sillero-Quintana M, Marins JCB. Effect of Whole-, Upper-, and Lower-Body High-Intensity Rowing Exercise on Skin Temperature Measured by Thermography. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2023; 94:226-236. [PMID: 35323083 DOI: 10.1080/02701367.2021.1964696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 08/02/2021] [Indexed: 06/14/2023]
Abstract
Purpose: Despite the growing works analyzing exercise-induced thermoregulatory adjustments through thermography, the skin temperature (Tsk) response of the same muscle groups underwent to different exercise demands has not been investigated. This study analyzed the behavior of Tsk of the same muscle groups when exercised with different demands in rowing. Methods: Eighteen men underwent three performance tests on a rowing ergometer: whole-body 2,000 m test (RTWB), upper-body (RTUB), and lower-body (RTLB) tests. In each condition, thermograms were recorded before (pre), immediately after test (post), and at 10 (REC10), 20 (REC20), and 30 (REC30) minutes post-exercise recovery. Tsk was measured at the pectoral (control body region), upper back, quadriceps, brachial biceps, and forearm. Results: Pectoral-Tsk reduced comparably in response to all testing conditions (p < .05). Upper back-Tsk decreased post (p < .001) and returned to baseline in the RTUB (REC10, p = 1.0) and RTWB (REC30, p = .128), while remained reduced in the RTLB (p < .001). Quadriceps-Tsk reduced post (p < .05) and returned to baseline in the RTWB and RTLB at REC10 (p = 1.0), remaining reduced in the RTUB during recovery (p < .05). Regarding the upper limbs, Tsk increased more markedly in the RTUB versus RTWB during the recovery period (p < .05); in the RTLB, biceps-Tsk remained below baseline over time (p < .05), whereas the forearm-Tsk was restored at REC10 (p = 1.0). Conclusion: Manipulating the muscle groups involved in rowing alters the Tsk response within equal ROI. Exercise-induced Tsk changes can reflect local hemodynamic and thermoregulatory adjustments.
Collapse
|
15
|
Siquier-Coll J, Bartolomé I, Pérez-Quintero M, Toro-Román V, Grijota FJ, Maynar-Mariño M. Heart Rate and Body Temperature Evolution in an Interval Program of Passive Heat Acclimation at High Temperatures (100 ± 2 °C) in a Sauna. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2082. [PMID: 36767447 PMCID: PMC9916041 DOI: 10.3390/ijerph20032082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Heat exposure provokes stress on the human body. If it remains constant, it leads to adaptations such as heat acclimation. This study aims to observe the evolution of heart rate (HR), core temperature (Tcore), and skin temperature (Tskin) in an intervallic program of exposure to extreme heat. Twenty-nine healthy male volunteers were divided into a control group (CG; n = 14) and an experimental group (EG; n = 15). EG experienced nine sessions (S) of intervallic exposure to high temperatures (100 ± 2 °C), whereas CG was exposed to ambient temperatures (22 ± 2 °C). HR, Tskin, and Tcore were monitored in S1, 4, 5, 8, and 9. An important increase in HR occurred in the S4 compared to the rest (p < 0.05) in EG. A lower HR was discovered in S8 and S9 compared to S4 and in S9 in relation to S1 (p < 0.05) in EG. EG experiences a gradual decrease in Tcore and Tskin, which was detected throughout the assessments, although it was only significant in the S8 and S9 (p < 0.05). Interval exposure to heat at 100 ± 2 °C elicits stress on the human organism, fundamentally increasing Tcore, Tskin, and FC. This recurring stress in the full program caused a drop in the thermoregulatory response as an adaptation or acclimation to heat.
Collapse
Affiliation(s)
- Jesús Siquier-Coll
- SER Research Group, Center of Higher Education Alberta Giménez, Comillas Pontifical University, Costa de Saragossa 16, 07013 Palma Mallorca, Spain
| | - Ignacio Bartolomé
- Department of Sport Science, Faculty of Education, Pontifical University of Salamanca, C/Henry Collet, 52-70, 37007 Salamanca, Spain
| | - Mario Pérez-Quintero
- Faculty of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003 Caceres, Spain
| | - Víctor Toro-Román
- Faculty of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003 Caceres, Spain
| | - Francisco J. Grijota
- Faculty of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003 Caceres, Spain
| | - Marcos Maynar-Mariño
- Faculty of Sport Sciences, University of Extremadura, Avenida de la Universidad s/n, 10003 Caceres, Spain
| |
Collapse
|
16
|
Aronson D, Nitzan Y, Petcherski S, Bravo E, Habib M, Burkhoff D, Abraham WT. Enhancing Sweat Rate Using a Novel Device for the Treatment of Congestion in Heart Failure. Circ Heart Fail 2023; 16:e009787. [PMID: 36321445 DOI: 10.1161/circheartfailure.122.009787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Current treatment of fluid retention in heart failure relies primarily on diuretics. However, adequate decongestion is not achieved in many patients. We aimed to study the feasibility and short-term performance of a novel approach to remove fluids and sodium directly from the interstitial compartment by enhancing sweat rate. METHODS We used a device designed to enhance fluid and salt loss via the eccrine sweat glands. Skin temperature in the lower body was increased from 35 °C to 38 °C, where the slope of the relationship between temperature and sweat production is linear. The sweat evaporates instantaneously, thus avoiding the awareness of perspiration. The primary efficacy endpoint was the ability to increase skin temperature to the desired range. A secondary efficacy endpoint was a clinically meaningful hourly sweat output, defined as ≥150 mL/h. The primary safety endpoint was any procedure-related adverse events. RESULTS We studied 6 normal subjects and 18 patients with congestion. Participants underwent 3 treatment sessions of up to 4 hours. Skin temperature increased to a median of 37.5 °C (interquartile range, 37.1-37.9 °C) with the median core temperature increasing by 0.2 °C (interquartile range, 0.1-0.3 °C). The median hourly weight loss during treatment was 215 g/h (interquartile range, 165-285; range, 100-344 g/h). In 80% of treatment procedures, the average sweat rate was ≥150 mL/h. There were no significant changes in hemodynamic variables or renal function and no procedure-related adverse events. CONCLUSIONS Enhancing sweat rate was safe and resulted in a clinically meaningful fluid removal and weight loss. REGISTRATION URL: https://www. CLINICALTRIALS gov; Unique identifier: NCT04578353.
Collapse
Affiliation(s)
- Doron Aronson
- Department of Cardiology, Rambam Medical Center, and B. Rappaport Faculty of Medicine, Technion Medical School, Haifa, Israel (D.A., S.P., E.B., M.H.)
| | | | - Sirouch Petcherski
- Department of Cardiology, Rambam Medical Center, and B. Rappaport Faculty of Medicine, Technion Medical School, Haifa, Israel (D.A., S.P., E.B., M.H.)
| | - Evgeny Bravo
- Department of Cardiology, Rambam Medical Center, and B. Rappaport Faculty of Medicine, Technion Medical School, Haifa, Israel (D.A., S.P., E.B., M.H.)
| | - Manhal Habib
- Department of Cardiology, Rambam Medical Center, and B. Rappaport Faculty of Medicine, Technion Medical School, Haifa, Israel (D.A., S.P., E.B., M.H.)
| | - Daniel Burkhoff
- Cardiovascular Research Foundation and Columbia University, New York, NY (D.B.)
| | - William T Abraham
- Division of Cardiovascular Medicine, The Ohio State University, Columbus (W.T.A.)
| |
Collapse
|
17
|
Collercandy N, Thorey C, Diot E, Grammatico-Guillon L, Thillard EM, Bernard L, Maillot F, Lemaignen A. When to investigate for secondary hyperhidrosis: data from a retrospective cohort of all causes of recurrent sweating. Ann Med 2022; 54:2089-2101. [PMID: 35903938 PMCID: PMC9455328 DOI: 10.1080/07853890.2022.2102675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Background: Identification of underlying diseases is crucial for secondary hyperhidrosis management, but data are lacking to guide appropriate investigation.Objective: To describe aetiologies of recurrent sweating in a hospital setting and the diagnostic performance parameters of their respective clinical/biological features.Patients and Methods: We performed a monocentric evaluative study in a tertiary care centre. Patients with recurrent generalised sweating were selected via the Clinical Data Warehouse (CDW) by screening all electronic hospital documents from the year 2018 using a keyword-based algorithm. All in and out-patients aged ≥ 18 years having reported recurrent sweating for at least 2 weeks in 2018 were included, with a minimum one-year follow-up after symptoms' onset.Results: A total of 420 patients were included. Over 130 different aetiologies were identified; 70 patients (16.7%) remained without diagnosis. Solid organ cancers (14.3% with 13 lung cancers), haematologic malignancies (14.0% with 35 non-Hodgkin's lymphomas) and Infectious Diseases (10.5% including 13 tuberculosis) were the most frequent diagnoses. Other aetiologies were gathered into inflammatory (16.9%) and non-inflammatory (27.6%) conditions. To distinguish non-inflammatory and undiagnosed hyperhidrosis from other causes, fever had a specificity of 94%, impaired general condition a sensitivity of 78%, and C-reactive protein (CRP) > 5.6 mg/l a positive predictive value of 0.86. Symptoms' duration over 1 year was in favour of non-infectious and non-malignant causes (94% specificity).Conclusions: We identified fever, impaired general condition, duration, and CRP as helpful orientation parameters to assess the need for complementary explorations for hyperhidrosis. The study provides a diagnostic algorithm for the investigation of recurrent sweating.KEY MESSAGESIn a hospital setting, malignancies and infections are the most frequently associated diseases, but 1/5 remain without diagnosis.Fever is a specific but not sensitive sign to distinguish inflammatory conditions.Over 1 year duration of symptoms significantly reduce the probability of malignancy or infection as the underlying diagnosis.
Collapse
Affiliation(s)
- Nived Collercandy
- Service de Médecine interne et Maladies infectieuses, Centre Hospitalier Universitaire de Tours, Tours, France.,Service de Médecine interne et Immunologie clinique, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Camille Thorey
- Service de Médecine interne et Maladies infectieuses, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Elisabeth Diot
- Service de Médecine interne et Immunologie clinique, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Leslie Grammatico-Guillon
- Service d'Information Médicale, Epidémiologie et Economie de la Santé (SIMEES, Centre de données cliniques), Centre Hospitalier Universitaire de Tours, Tours, France.,Université de Tours, Tours, France
| | - Eve Marie Thillard
- Centre Régional de Pharmacovigilance et d'Information sur le Médicament, Centre Val de Loire, Centre Hospitalier Universitaire de Tours, Tours, France
| | - Louis Bernard
- Service de Médecine interne et Maladies infectieuses, Centre Hospitalier Universitaire de Tours, Tours, France.,Université de Tours, Tours, France
| | - François Maillot
- Service de Médecine interne et Immunologie clinique, Centre Hospitalier Universitaire de Tours, Tours, France.,Université de Tours, Tours, France
| | - Adrien Lemaignen
- Service de Médecine interne et Maladies infectieuses, Centre Hospitalier Universitaire de Tours, Tours, France.,Université de Tours, Tours, France
| |
Collapse
|
18
|
Hosseini M, Koehler KR, Shafiee A. Biofabrication of Human Skin with Its Appendages. Adv Healthc Mater 2022; 11:e2201626. [PMID: 36063498 DOI: 10.1002/adhm.202201626] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/30/2022] [Indexed: 01/28/2023]
Abstract
Much effort has been made to generate human skin organ in the laboratory. Yet, the current models are limited due to the lack of many critical biological and structural features of the skin. Importantly, these in vitro models lack appendages and fail to recapitulate the whole human skin construction. Thus, engineering a human skin with the capacity to generate all components, including appendages, is a major challenge. This review intends to provide an update on the recent efforts underway to regenerate appendage-bearing skin organs based on scaffold-free and scaffold-based bioengineering approaches. Although the mouse skin equivalents containing hair follicles, sebaceous glands, and sweat glands have been established in vitro, there has been limited success in humans. A combination of biofabricated matrices and cell aggregates, such as organoids, can pave the way for generating skin substitutes with human-like biological, structural, and physical features. Accordingly, the formation of human skin organoids and reconstruction of vascularized skin equipped with immune cells prompt calls for more scientific research. The generation of appendage-bearing skin substitutes can be applied in practice for wound healing, hair restoration, and scar treatment.
Collapse
Affiliation(s)
- Motaharesadat Hosseini
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane, QLD, 4059, Australia.,ARC Industrial Transformation Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D), Queensland University of Technology, Brisbane, QLD, 4059, Australia
| | - Karl R Koehler
- Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, 02115, USA.,Department of Otolaryngology, Boston Children's Hospital, Boston, MA, 02115, USA
| | - Abbas Shafiee
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, QLD, 4029, Australia.,Royal Brisbane and Women's Hospital, Metro North Hospital and Health Service, Brisbane, QLD, 4029, Australia.,The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
| |
Collapse
|
19
|
Effects of different exercise types on outdoor thermal comfort in a severe cold city. J Therm Biol 2022; 109:103330. [DOI: 10.1016/j.jtherbio.2022.103330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 06/24/2022] [Accepted: 09/11/2022] [Indexed: 11/21/2022]
|
20
|
Carvalho F, Magalhaes C, Fernandez-Llimos F, Mendes J, Gonçalves J. Skin temperature response to thermal stimulus in patients with hyperhidrosis: A comparative study. J Therm Biol 2022; 109:103322. [DOI: 10.1016/j.jtherbio.2022.103322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/07/2022] [Accepted: 08/30/2022] [Indexed: 11/28/2022]
|
21
|
Cramer MN, Gagnon D, Laitano O, Crandall CG. Human temperature regulation under heat stress in health, disease, and injury. Physiol Rev 2022; 102:1907-1989. [PMID: 35679471 PMCID: PMC9394784 DOI: 10.1152/physrev.00047.2021] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 05/10/2022] [Accepted: 05/28/2022] [Indexed: 12/30/2022] Open
Abstract
The human body constantly exchanges heat with the environment. Temperature regulation is a homeostatic feedback control system that ensures deep body temperature is maintained within narrow limits despite wide variations in environmental conditions and activity-related elevations in metabolic heat production. Extensive research has been performed to study the physiological regulation of deep body temperature. This review focuses on healthy and disordered human temperature regulation during heat stress. Central to this discussion is the notion that various morphological features, intrinsic factors, diseases, and injuries independently and interactively influence deep body temperature during exercise and/or exposure to hot ambient temperatures. The first sections review fundamental aspects of the human heat stress response, including the biophysical principles governing heat balance and the autonomic control of heat loss thermoeffectors. Next, we discuss the effects of different intrinsic factors (morphology, heat adaptation, biological sex, and age), diseases (neurological, cardiovascular, metabolic, and genetic), and injuries (spinal cord injury, deep burns, and heat stroke), with emphasis on the mechanisms by which these factors enhance or disturb the regulation of deep body temperature during heat stress. We conclude with key unanswered questions in this field of research.
Collapse
Affiliation(s)
- Matthew N Cramer
- Defence Research and Development Canada-Toronto Research Centre, Toronto, Ontario, Canada
| | - Daniel Gagnon
- Montreal Heart Institute and School of Kinesiology and Exercise Science, Université de Montréal, Montréal, Quebec, Canada
| | - Orlando Laitano
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, Florida
| | - Craig G Crandall
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, Texas
| |
Collapse
|
22
|
Namineni N, Potok OA, Ix JH, Ginsberg C, Negoianu D, Rifkin DE, Garimella PS. Marathon Runners' Knowledge and Strategies for Hydration. Clin J Sport Med 2022; 32:517-522. [PMID: 34723866 PMCID: PMC9050964 DOI: 10.1097/jsm.0000000000000990] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 10/01/2021] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To study hydration plans and understanding of exercise-associated hyponatremia (EAH) among current marathon runners. DESIGN Cross-sectional study. SETTING Southern California 2018 summer marathon. PARTICIPANTS Two hundred ten marathon runners. INTERVENTIONS Survey administered 1 to 2 days before the race. Race times were obtained from public race website. MAIN OUTCOME MEASURES Planned frequency of hydration; awareness of, understanding of, and preventative strategies for dehydration and EAH; resources used to create hydration plans; drink preferences. RESULTS When the participants were split into 3 equal groups by racing speed, the slower tertile intended to drink at every mile/station (60%), whereas the faster tertile preferred to drink every other mile or less often (60%), although not statistically significant. Most runners (84%) claimed awareness of EAH, but only 32% could list a symptom of the condition. Both experienced marathoners and the faster tertile significantly had greater understanding of hyponatremia compared with first-time marathoners and the slower tertile, respectively. Less than 5% of marathoners offered "drink to thirst" as a prevention strategy for dehydration or EAH. CONCLUSION Slower runners plan to drink larger volumes compared with their faster counterparts. Both slower and first-time marathoners significantly lacked understanding of EAH. These groups have plans and knowledge that may put them at higher risk for developing EAH. Most marathon runners did not know of the guidelines to "drink to thirst," suggesting the 2015 EAH Consensus statement may not have had the desired impact.
Collapse
Affiliation(s)
- Neeharika Namineni
- School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - O. Alison Potok
- Division of Nephrology-Hypertension, University of California San Diego, La Jolla, CA, USA
| | - Joachim H. Ix
- Division of Nephrology-Hypertension, University of California San Diego, La Jolla, CA, USA
| | - Charles Ginsberg
- Division of Nephrology-Hypertension, University of California San Diego, La Jolla, CA, USA
| | - Dan Negoianu
- School of Medicine, University of California San Diego, La Jolla, CA, USA
- Renal-Electrolyte and Hypertension Division, Hospital of the University of Pennsylvania, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Dena E. Rifkin
- Division of Nephrology-Hypertension, University of California San Diego, La Jolla, CA, USA
| | - Pranav S. Garimella
- Division of Nephrology-Hypertension, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
23
|
Li PL, Yick KL, Yip J, Ng SP. Influence of Upper Footwear Material Properties on Foot Skin Temperature, Humidity and Perceived Comfort of Older Individuals. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10861. [PMID: 36078575 PMCID: PMC9518374 DOI: 10.3390/ijerph191710861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/17/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Studying the in-shoe microclimate of older individuals is important for enhancing their foot comfort and preventing foot diseases. However, there is a lack of scientific work that explores the thermo-physiological wear comfort of older individuals with different footwear. This study aims to examine the effects of upper footwear materials on changes and distributions in the foot skin temperature and relative humidity for older individuals. Forty older individuals are recruited to perform sitting and walking activities under four experimental conditions in a conditioning chamber. The findings indicate that footwear upper constructed of highly permeable mesh fabric with large air holes shows fewer changes in foot skin temperature (ranging from 1.3 to 3.3 °C) and relative humidity (ranging from -13.3 to 5.7%) throughout the entire foot during dynamic walking, as well as higher subjective ratings on perceived thermal comfort when compared to footwear made of synthetic leather and composite layers. The findings serve to enhance current understanding of designing footwear with optimum comfort for older adults.
Collapse
Affiliation(s)
- Pui-Ling Li
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
- Laboratory for Artificial Intelligence in Design, Hong Kong Science Park, New Territories, Hong Kong SAR, China
| | - Kit-Lun Yick
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
- Laboratory for Artificial Intelligence in Design, Hong Kong Science Park, New Territories, Hong Kong SAR, China
| | - Joanne Yip
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
- Laboratory for Artificial Intelligence in Design, Hong Kong Science Park, New Territories, Hong Kong SAR, China
| | - Sun-Pui Ng
- School of Professional Education and Executive Development, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| |
Collapse
|
24
|
Aronson D. The interstitial compartment as a therapeutic target in heart failure. Front Cardiovasc Med 2022; 9:933384. [PMID: 36061549 PMCID: PMC9428749 DOI: 10.3389/fcvm.2022.933384] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/15/2022] [Indexed: 12/23/2022] Open
Abstract
Congestion is the single most important contributor to heart failure (HF) decompensation. Most of the excess volume in patients with HF resides in the interstitial compartment. Inadequate decongestion implies persistent interstitial congestion and is associated with worse outcomes. Therefore, effective interstitial decongestion represents an unmet need to improve quality of life and reduce clinical events. The key processes that underlie incomplete interstitial decongestion are often ignored. In this review, we provide a summary of the pathophysiology of the interstitial compartment in HF and the factors governing the movement of fluids between the interstitial and vascular compartments. Disruption of the extracellular matrix compaction occurs with edema, such that the interstitium becomes highly compliant, and large changes in volume marginally increase interstitial pressure and allow progressive capillary filtration into the interstitium. Augmentation of lymph flow is required to prevent interstitial edema, and the lymphatic system can increase fluid removal by at least 10-fold. In HF, lymphatic remodeling can become insufficient or maladaptive such that the capacity of the lymphatic system to remove fluid from the interstitium is exceeded. Increased central venous pressure at the site of the thoracic duct outlet also impairs lymphatic drainage. Owing to the kinetics of extracellular fluid, microvascular absorption tends to be transient (as determined by the revised Starling equation). Therefore, effective interstitial decongestion with adequate transcapillary plasma refill requires a substantial reduction in plasma volume and capillary pressure that are prolonged and sustained, which is not always achieved in clinical practice. The critical importance of the interstitium in the congestive state underscores the need to directly decongest the interstitial compartment without relying on the lowering of intracapillary pressure with diuretics. This unmet need may be addressed by novel device therapies in the near future.
Collapse
|
25
|
Lannan FM, Powell J, Kim GM, Hansen CR, Pasquina PF, Smith DG. Hyperhidrosis of the residual limb: a narrative review of the measurement and treatment of excess perspiration affecting individuals with amputation. Prosthet Orthot Int 2021; 45:477-486. [PMID: 34723907 DOI: 10.1097/pxr.0000000000000040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 07/27/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Hyperhidrosis (HH) is a relatively common disorder involving excessive sweating, typically of the palms or axilla. HH can also frequently occur after limb amputation, where the remaining residual limb excessively perspires, leading to an increased risk of dermatological disorders and functional limitations, such as the inability to comfortably or safely wear a prosthesis. Although many treatments have been proposed to treat HH within the dermatology community, they are not widely known by healthcare providers typically involved in caring for individuals with acquired limb loss. OBJECTIVES To appraise the current state of quantitative and qualitative assessment of HH within the residual limb and examine existing and future treatment strategies for this problem. STUDY DESIGN Narrative Literature Review. METHODS A literature review focused on the assessment and treatment of excessive sweating of residual limbs. RESULTS There is currently no objective or subjective standard to assess or diagnose HH of the residual limb. Conventional therapies for HH do not always translate to the population of individuals with limb loss. Emerging modalities for treating HH show promise toward a permanent resolution of excess perspiration but require additional studies within people with amputation. CONCLUSIONS Further research is needed to quantify standard values to objectively and subjectively assess and diagnose hyperhidrosis of the residual limb. New and developing treatments for hyperhidrosis require additional studies to assess efficacy and safety in the residual limb.
Collapse
Affiliation(s)
- Ford M Lannan
- Department of Dermatology, Walter Reed National Military Medical Center, Bethesda, Maryland
| | - Jordan Powell
- Physical Medicine and Rehabilitation, Walter Reed National Military Medical Center, Bethesda, Maryland
- Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Gabriel M Kim
- Physical Medicine and Rehabilitation, Walter Reed National Military Medical Center, Bethesda, Maryland
- Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Colby R Hansen
- Division of Physical Medicine and Rehabilitation, University of Utah, Salt Lake City, Utah
| | - Paul F Pasquina
- Physical Medicine and Rehabilitation, Walter Reed National Military Medical Center, Bethesda, Maryland
- Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Douglas G Smith
- Physical Medicine and Rehabilitation, Walter Reed National Military Medical Center, Bethesda, Maryland
- Uniformed Services University of the Health Sciences, Bethesda, Maryland
- Department of Orthopaedic Surgery at the University of Washington, Seattle, Washington
| |
Collapse
|
26
|
Hunt LA, Hospers L, Smallcombe JW, Mavros Y, Jay O. Caffeine alters thermoregulatory responses to exercise in the heat only in caffeine-habituated individuals: a double-blind placebo-controlled trial. J Appl Physiol (1985) 2021; 131:1300-1310. [PMID: 34435513 DOI: 10.1152/japplphysiol.00172.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
To assess the impact of acute caffeine ingestion on thermoregulatory responses during steady-state exercise under moderate heat stress conditions in caffeine-habituated and nonhabituated individuals. Twenty-eight participants [14 habituated (HAB) (4 females) and 14 nonhabituated (NHAB) (6 females)] cycled at a fixed metabolic heat production (7 W·kg-1) for 60 min on two separate occasions 1 h after ingesting 1) 5 mg·kg-1 caffeine (CAF) or 2) 5 mg·kg-1 placebo (PLA), in a double-blinded, randomized, and counterbalanced order. Environmental conditions were 30.6 ± 0.9°C, 31 ± 1% relative humidity (RH). The end-exercise rise in esophageal temperature (ΔTes) from baseline was greater with CAF in the HAB group (CAF = 0.88 ± 0.29°C, PLA = 0.62 ± 0.34°C, P < 0.001), but not in the NHAB group (CAF = 1.00 ± 0.42°C, PLA = 1.00 ± 0.39°C, P = 0.94). For a given change in mean body temperature, rises in % of maximum skin blood flow were attenuated with CAF on the forearm (P = 0.015) and back (P = 0.021) in the HAB group, but not in the NHAB group (P ≥ 0.65). Dry heat loss was similar in the HAB (CAF = 31 ± 5 W·m-2, PLA = 33 ± 7 W·m-2) and NHAB groups (CAF = 31 ± 3 W·m-2, PLA 30 ± 4 W·m-2) (P ≥ 0.37). There were no differences in whole body sweat losses in both groups (HAB: CAF = 0.59 ± 0.15 kg, PLA = 0.56 ± 0.17 kg, NHAB:CAF = 0.53 ± 0.19 kg, PLA 0.52 ± 0.19 kg) (P ≥ 0.32). As the potential for both dry and evaporative heat loss was uninhibited by caffeine, we suggest that the observed ΔTes differences with CAF in the HAB group were due to alterations in internal heat distribution. Our findings support the common practice of participants abstaining from caffeine before participation in thermoregulatory research studies in compensable conditions.NEW & NOTEWORTHY We provide empirical evidence that acute caffeine ingestion exerts a thermoregulatory effect during exercise in the heat in caffeine-habituated individuals but not in nonhabituated individuals. Specifically, caffeine habituation was associated with a greater rise in esophageal temperature with caffeine compared with placebo, which appears to be driven by a blunted skin blood flow response. In contrast, no thermoregulatory differences were observed with caffeine in nonhabituated individuals. Caffeine did not affect sweating responses during exercise in the heat.
Collapse
Affiliation(s)
- Lindsey A Hunt
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, New South Wales, Australia
| | - Lily Hospers
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, New South Wales, Australia
| | - James W Smallcombe
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, New South Wales, Australia
| | - Yorgi Mavros
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, New South Wales, Australia.,Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia
| | - Ollie Jay
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Camperdown, New South Wales, Australia.,Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia
| |
Collapse
|
27
|
Comparison of EQ-5D-3L and metabolic components between patients with hyperhidrosis and the general population: a propensity score matching analysis. Qual Life Res 2021; 30:2591-2599. [PMID: 33974220 DOI: 10.1007/s11136-021-02856-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE It is important to understand the characteristics of patients with hyperhidrosis, which are different from the general population, for treating hyperhidrosis. Sympathetic overactivity, which might play an important role in hyperhidrosis, can contribute to metabolic diseases and the decreased quality of life (QoL). We compared the metabolic components and health-related QoL between patients with hyperhidrosis and the general population. METHODS We conducted a case-control study and compared the characteristics of the patients (N = 196) with hyperhidrosis and propensity score-matched controls (N = 196) selected from the Korean National Health and Nutrition Examination Survey. Metabolic components and EQ-5D-3L (EQ-5D) index were compared using a two-way mixed analysis of covariance after adjusting for confounders. RESULTS Patients with hyperhidrosis had significantly higher waist circumference (estimated mean values ± SD for patients and the control group, 85.5 ± 10.8 cm vs 81.3 ± 10.3 cm, p < 0.001), blood pressure (SBP, 121.1 ± 16.9 vs 111.7 ± 10.3, p < 0.001 AND DBP, 77.5 ± 12.8 vs 73.6 ± 8.6, p < 0.001, respectively), fasting glucose (97.1 ± 11.3 vs 91.5 ± 9.2, p < 0.001), and the number of components of metabolic syndrome (1.4 ± 1.3 vs 1.0 ± 1.2, p = 0.002), and significantly lower estimated glomerular filtration rate (144.3 ± 53.2 vs 158.3 ± 55.7, p = 0.002) and EQ-5D values (estimated mean values (standard error) for patients and the control group, 0.92 (0.01) vs 0.97 (0.01), p < 0.001) compared to the control group after adjustment. CONCLUSION The patients with hyperhidrosis had more central obesity and unfavorable metabolic parameters and a lower EQ-5D index compared with the general population, emphasizing clinical importance of hyperhidrosis to be cured in aspect of metabolic components as well as patients' QOL.
Collapse
|
28
|
Chen YC, Shan SS, Liao YT, Liao YC. Bio-inspired fractal textile device for rapid sweat collection and monitoring. LAB ON A CHIP 2021; 21:2524-2533. [PMID: 34105558 DOI: 10.1039/d1lc00328c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, a new design concept in sweat collection was developed to achieve rapid and intact sweat sampling for analytical purposes. Textiles with fast water wicking properties were first selected and laser engraved into tree-like bifurcating channels for sweat collection. The fractal framework of the bifurcating textile channels was theoretically derived to minimize the flow resistance for fast sweat absorption. The optimized collector with designed fractal geometry exhibited thorough coverage of emerging droplets without overflow. Great collection efficiency was achieved with a short induction time (<1 minute after perspiration begins) and a maximum sweat collection flux up to 4.0 μL cm-2 min-1 without leakage. After being combined with printed sensors and microchips, the assembled sweat collection/sensing device can simultaneously provide measurements of salt concentration and sweat rate for wireless hydration state monitoring. The collection/sensing system also exhibited fast response times to abrupt changes in sweat rates or concentrations and thus can be used to detect instant physical conditions in exercise. Finally, field tests were performed to demonstrate the reliability and practicality of the device in real-time sweat monitoring under vigorous activities.
Collapse
Affiliation(s)
- Yen-Chi Chen
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan. and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Siang-Sin Shan
- Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Yu-Te Liao
- Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Ying-Chih Liao
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan. and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei, Taiwan
| |
Collapse
|
29
|
Smith JW, Bello ML, Price FG. A Case-Series Observation of Sweat Rate Variability in Endurance-Trained Athletes. Nutrients 2021; 13:nu13061807. [PMID: 34073387 PMCID: PMC8226773 DOI: 10.3390/nu13061807] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 01/31/2023] Open
Abstract
Adequate fluid replacement during exercise is an important consideration for athletes, however sweat rate (SR) can vary day-to-day. The purpose of this study was to investigate day-to-day variations in SR while performing self-selected exercise sessions to evaluate error in SR estimations in similar temperature conditions. Thirteen endurance-trained athletes completed training sessions in a case-series design 1x/week for a minimum 30 min of running/biking over 24 weeks. Body mass was recorded pre/post-training and corrected for fluid consumption. Data were split into three Wet-Bulb Globe Thermometer (WBGT) conditions: LOW (<10 °C), MOD (10–19.9 °C), HIGH (>20 °C). No significant differences existed in exercise duration, distance, pace, or WBGT for any group (p > 0.07). Significant differences in SR variability occurred for all groups, with average differences of: LOW = 0.15 L/h; MOD = 0.14 L/h; HIGH = 0.16 L/h (p < 0.05). There were no significant differences in mean SR between LOW-MOD (p > 0.9), but significant differences between LOW-HIGH and MOD-HIGH (p < 0.03). The assessment of SR can provide useful data for determining hydration strategies. The significant differences in SR within each temperature range indicates a single assessment may not accurately represent an individual’s typical SR even in similar environmental conditions.
Collapse
|
30
|
Laurino MJL, da Silva AKF, Santos LA, Ribeiro F, Vanzella LM, Corazza DAG, Vanderlei LCM. Vagal reactivation after a cardiac rehabilitation session associated with hydration in coronary artery disease patients: crossover clinical trial. Sci Rep 2021; 11:10482. [PMID: 34006912 PMCID: PMC8131702 DOI: 10.1038/s41598-021-89840-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 04/30/2021] [Indexed: 02/03/2023] Open
Abstract
This study aimed to investigate the hydration influence on the autonomic responses of coronary artery disease subjects in the immediate recovery period after a cardiovascular rehabilitation session, in view of the risks of a delayed autonomic recovery for this population. 28 males with coronary artery disease were submitted to: (I) Maximum effort test; (II) Control protocol (CP), composed by initial rest, warm-up, exercise and passive recovery; (III) Hydration protocol (HP) similar to CP, but with rehydration during exercise. The recovery was evaluated through the heart rate (HR) variability, HR recovery and by the rate of perceived exertion and recovery. The main results revealed that the vagal reactivation occurred at the first 30 s of recovery in HP and after the first minute in CP. A better behavior of the HR at the first minute of recovery was observed in HP. The rate of perceived exertion had a significant decrease in the first minute of recovery in HP, while in CP this occurred after the third minute. In conclusion, despite an anticipated vagal reactivation found at HP, these results should be analyzed with caution as there were no significant differences between protocols for all variables and the effect sizes were small.
Collapse
Affiliation(s)
- Maria Júlia Lopez Laurino
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil.
| | - Anne Kastelianne França da Silva
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| | - Lorena Altafin Santos
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| | - Felipe Ribeiro
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| | - Laís Manata Vanzella
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| | - Dayane Andrade Genoni Corazza
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| | - Luiz Carlos Marques Vanderlei
- Physical Therapy Post-graduation Program, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo, 19060-900, Brazil
| |
Collapse
|
31
|
Klous L, Folkerts M, Daanen H, Gerrett N. The effect of short and continuous absorbent patch application on local skin temperature underneath. Physiol Meas 2021; 42. [PMID: 33784659 DOI: 10.1088/1361-6579/abf364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/30/2021] [Indexed: 11/11/2022]
Abstract
Objective. By attaching absorbent patches to the skin to collect sweat, an increase in local skin temperature (Tsk) underneath the patches seems unavoidable. Yet this effect has not been quantified. The present study investigates the effect of absorbent patch application on localTskunderneath.Approach. Ten healthy participants cycled for 60 min at an exercise intensity relative to their body surface area (40 W.m-2) in three environmental conditions (temperate: 25 °C 45% RH, hot-humid: 33 °C 65% RH and hot-dry: 40 °C 30% RH). The effect of short sweat sampling (i.e. from min 25-30 to min 55-60) onTskwas examined on the right scapula.Tskof the left scapula served as control. The effect of continuous sweat sampling (i.e. four consecutive 15 min periods) onTskwas examined on the right upper arm.Tskof the left upper arm served as control.Main results. Neither short nor continuous application of absorbent sweat patches affectedTskunderneath the patches in the hot-humid and hot-dry condition (P > 0.05). In the temperate condition, continuous application led to a significant increase inTskunderneath the patches during the first and second minute. This increase remained throughout the experiment (1.8 ± 0.6 °C;P < 0.001). Short application of sweat patches did not affect the localTskunderneath (P > 0.05) in the temperate condition.Significance. To avoid a significant increase in localTskunderneath sweat patches, continuous application should be prevented in, especially, a temperate condition. Timely removal of sweat patches should be taken into account during longer periods of collecting sweat in field or laboratories settings.
Collapse
Affiliation(s)
- Lisa Klous
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Mireille Folkerts
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Hein Daanen
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Nicola Gerrett
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| |
Collapse
|
32
|
Wilson TE, Narra S, Metzler-Wilson K, Schneider A, Bullens KA, Holt IS. Role of Bradykinin Type 2 Receptors in Human Sweat Secretion: Translational Evidence Does Not Support a Functional Relationship. Skin Pharmacol Physiol 2021; 34:162-166. [PMID: 33794540 DOI: 10.1159/000514497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 01/14/2021] [Indexed: 11/19/2022]
Abstract
Bradykinin increases skin blood flow via a cGMP mechanism but its role in sweating in vivo is unclear. There is a current need to translate cell culture and nonhuman paw pad studies into in vivo human preparations to test for therapeutic viability for disorders affecting sweat glands. Protocol 1: physiological sweating was induced in 10 healthy subjects via perfusing warm (46-48°C) water through a tube-lined suit while bradykinin type 2 receptor (B2R) antagonist (HOE-140; 40 μM) and only the vehicle (lactated Ringer's) were perfused intradermally via microdialysis. Heat stress increased sweat rate (HOE-140 = +0.79 ± 0.12 and vehicle = +0.64 ± 0.10 mg/cm2/min), but no differences were noted with B2R antagonism. Protocol 2: pharmacological sweating was induced in 6 healthy subjects via intradermally perfusing pilocarpine (1.67 mg/mL) followed by the same B2R antagonist approach. Pilocarpine increased sweating (HOE-140 = +0.38 ± 0.16 and vehicle = +0.32 ± 0.12 mg/cm2/min); again no differences were observed with B2R antagonism. Last, 5 additional subjects were recruited for various control experiments which identified that a functional dose of HOE-140 was utilized and it was not sudorific during normothermic conditions. These data indicate B2R antagonists do not modulate physiologically or pharmacologically induced eccrine secretion volumes. Thus, B2R agonist/antagonist development as a potential therapeutic target for hypo- and hyperhidrosis appears unwarranted.
Collapse
Affiliation(s)
- Thad E Wilson
- Division of Biomedical Sciences, Marian University College of Osteopathic Medicine, Indianapolis, Indiana, USA.,Department of Physiology, University of Kentucky College of Medicine, Lexington, Kentucky, USA
| | - Seetharam Narra
- Division of Biomedical Sciences, Marian University College of Osteopathic Medicine, Indianapolis, Indiana, USA
| | - Kristen Metzler-Wilson
- Department of Physical Therapy, Indiana University, Indianapolis, Indiana, USA.,Department of Anatomy, Cell Biology, & Physiology, Indiana University, Indianapolis, Indiana, USA.,Department of Dermatology, Indiana University, Indianapolis, Indiana, USA
| | - Artur Schneider
- Division of Biomedical Sciences, Marian University College of Osteopathic Medicine, Indianapolis, Indiana, USA
| | - Kelsey A Bullens
- Division of Biomedical Sciences, Marian University College of Osteopathic Medicine, Indianapolis, Indiana, USA
| | - Ian S Holt
- Division of Biomedical Sciences, Marian University College of Osteopathic Medicine, Indianapolis, Indiana, USA
| |
Collapse
|
33
|
Lin Y, Chen L, Zhang M, Xie S, Du L, Zhang X, Li H. Eccrine Sweat Gland and Its Regeneration: Current Status and Future Directions. Front Cell Dev Biol 2021; 9:667765. [PMID: 34395417 PMCID: PMC8355620 DOI: 10.3389/fcell.2021.667765] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 07/09/2021] [Indexed: 02/05/2023] Open
Abstract
Eccrine sweat glands (ESGs) play an important role in temperature regulation by secreting sweat. Insufficiency or dysfunction of ESGs in a hot environment or during exercise can lead to hyperthermia, heat exhaustion, heatstroke, and even death, but the ability of ESGs to repair and regenerate themselves is very weak and limited. Repairing the damaged ESGs and regenerating the lost or dysfunctional ESGs poses a challenge for dermatologists and bum surgeons. To promote and accelerate research on the repair and regeneration of ESGs, we summarized the development, structure and function of ESGs, and current strategies to repair and regenerate ESGs based on stem cells, scaffolds, and possible signaling pathways involved.
Collapse
Affiliation(s)
- Yao Lin
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Liyun Chen
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Mingjun Zhang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Sitian Xie
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Lijie Du
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Xiang Zhang
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - Haihong Li
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital of Shantou University Medical College, Shantou, China
- Department of Wound Repair and Dermatologic Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
- *Correspondence: Haihong Li,
| |
Collapse
|
34
|
Weng T, Zhang W, Xia Y, Wu P, Yang M, Jin R, Xia S, Wang J, You C, Han C, Wang X. 3D bioprinting for skin tissue engineering: Current status and perspectives. J Tissue Eng 2021; 12:20417314211028574. [PMID: 34345398 PMCID: PMC8283073 DOI: 10.1177/20417314211028574] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/10/2021] [Indexed: 12/25/2022] Open
Abstract
Skin and skin appendages are vulnerable to injury, requiring rapidly reliable regeneration methods. In recent years, 3D bioprinting has shown potential for wound repair and regeneration. 3D bioprinting can be customized for skin shape with cells and other materials distributed precisely, achieving rapid and reliable production of bionic skin substitutes, therefore, meeting clinical and industrial requirements. Additionally, it has excellent performance with high resolution, flexibility, reproducibility, and high throughput, showing great potential for the fabrication of tissue-engineered skin. This review introduces the common techniques of 3D bioprinting and their application in skin tissue engineering, focusing on the latest research progress in skin appendages (hair follicles and sweat glands) and vascularization, and summarizes current challenges and future development of 3D skin printing.
Collapse
Affiliation(s)
- Tingting Weng
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei Zhang
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Yilan Xia
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Pan Wu
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Min Yang
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Ronghua Jin
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Sizhan Xia
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Jialiang Wang
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Chuangang You
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Chunmao Han
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| | - Xingang Wang
- Department of Burns & Wound Care Centre, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- The Key Laboratory of Trauma and Burns of Zhejiang University, Hangzhou, Zhejiang, China
| |
Collapse
|
35
|
Chaseling GK, Filingeri D, Allen D, Barnett M, Vucic S, Davis SL, Jay O. Blunted sweating does not alter the rise in core temperature in people with multiple sclerosis exercising in the heat. Am J Physiol Regul Integr Comp Physiol 2020; 320:R258-R267. [PMID: 33296279 DOI: 10.1152/ajpregu.00090.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The purpose of this study is to determine whether thermoregulatory capacity is altered by multiple sclerosis (MS) during exercise in the heat. Sixteen MS participants (EDSS: 2.9 ± 0.9; 47 ± 8 yr; 77.6 ± 14.0 kg) and 14 healthy control (CON) participants (43 ± 11 yr; 78.6 ± 17.0 kg) cycled at a heat production of 4 W·kg-1 for 60 min at 30°C, 30% relative humidity (RH) (Warm). A subset of eight MS (EDSS: 2.6 ± 0.5; 44 ± 8 yr; 82.3 ± 18.2 kg) and 8 CON (44 ± 12 yr; 81.2 ± 21.1 kg) also exercised at 35°C, 30% RH (Hot). Rectal temperature (Tre), mean skin (Tsk) temperature, and local sweat rate (LSR) on the upper back (LSRback) and forearm (LSRarm) were measured. All CON, and only 9 of 16 and 7 of 8 MS participants completed 60 min of exercise in Warm and Hot trials, respectively. All MS participants who were unable to complete exercise stopped with a ΔTre between 0.2 and 0.5°C. The time to reach a ΔTre of 0.2°C was similar (MS: 28 ± 15 min, CON: 32 ± 18 min; P = 0.51). For MS participants, completing 60-min of exercise in Warm, ΔTre (P = 0.13), ΔTsk (P = 0.45), LSRback (P = 0.69), and LSRarm (P = 0.54) was similar to CON, but ΔTb (body temperature) (MS: 0.16 ± 0.13°C, CON: 0.07 ± 0.06°C; P = 0.02) and onset time (MS: 16 ± 10 min, CON: 8 ± 5 min; P = 0.02) for sweating were greater in MS. Similarly, in Hot, ΔTre (P = 0.52), ΔTsk (P = 0.06), LSRback (P = 0.59), and LSRarm (P = 0.08) were similar, but ΔTb (MS: 0.19 ± 0.16°C, CON: 0.06 ± 0.04°C; P = 0.04) and onset time (MS: 13 ± 7 min, CON: 6 ± 3 min; P = 0.02) for sweating were greater in MS. Even at 35°C, a delayed sweating onset did not alter heat loss to sufficiently affect exercise-induced rises in core temperature. Heat intolerance with MS does not seem attributable to thermoregulatory impairments.
Collapse
Affiliation(s)
- Georgia K Chaseling
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Davide Filingeri
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Sydney, New South Wales, Australia.,Thermosense Lab, Environmental Ergonomics Research Centre, Loughborough University, Leicestershire, United Kingdom
| | - Dustin Allen
- Department of Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas.,Department of Health Sciences, Boston University, Boston, Massachusetts
| | - Michael Barnett
- Brain and Mind Centre, The University of Sydney, Camperdown, New South Wales, Australia
| | - Steve Vucic
- Westmead Clinical School, Faculty of Medicine and Health, The University of Sydney Clinical School, Westmead, New South Wales, Australia
| | - Scott L Davis
- Department of Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas.,Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ollie Jay
- Thermal Ergonomics Laboratory, Faculty of Medicine and Health, Sydney School of Health Sciences, The University of Sydney, Sydney, New South Wales, Australia.,Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia
| |
Collapse
|
36
|
Rutherford MM, Akerman AP, Notley SR, Meade RD, Schmidt MD, Kenny GP. Regional variation in the reliability of sweat rate measured via the ventilated capsule technique during passive heating. Exp Physiol 2020; 106:615-633. [PMID: 33230911 DOI: 10.1113/ep089074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/19/2020] [Indexed: 01/02/2023]
Abstract
The ventilated capsule technique is widely used to measure time-dependent changes in sweating in humans. However, evaluations of its reliability (consistency) have been restricted to the forearm, despite extensive regional heterogeneity in the sweating response. Given the importance of such information for experimental design, statistical analysis and interpretation, we determined the reliability of local sweat rate at nine sites during whole-body passive (resting) heating. On three separate occasions, a water-perfused suit was used to increase and clamp oesophageal temperature 0.6, 1.2 and 1.8°C above baseline in 14 young men [24 (SD 5) years of age], while sweat rate was measured at the forehead, chest, abdomen, biceps, forearm, hand, quadriceps, calf and foot using ventilated capsules (3.8 cm2 ). Absolute and relative reliability were determined via the coefficient of variation (CV) and intraclass correlation coefficient (ICC), respectively. At low heat strain (0.6°C), almost all sites had acceptable relative reliability (ICC ≥ 0.70) and moderate absolute reliability (CV < 25%). At moderate heat strain (1.2°C), only the abdomen, hand, quadriceps and foot had acceptable relative reliability, whereas the forehead, abdomen, forearm, hand and quadriceps had moderate absolute reliability. At high heat strain (1.8°C), relative reliability was acceptable at the abdomen, quadriceps, calf and foot, whereas the chest, abdomen, forearm, hand, quadriceps, calf and foot had moderate absolute reliability. Our findings indicate that the measurement site and level of heat strain impact the consistency of local sweat rate measured via the ventilated capsule technique, and we demonstrate the possible implications for research design and data interpretation.
Collapse
Affiliation(s)
- Maura M Rutherford
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Ashley P Akerman
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Sean R Notley
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Robert D Meade
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Madison D Schmidt
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada
| |
Collapse
|
37
|
Luetkemeier MJ, Allen DR, Huang M, Pizzey FK, Parupia IM, Wilson TE, Davis SL. Skin tattooing impairs sweating during passive whole body heating. J Appl Physiol (1985) 2020; 129:1033-1038. [PMID: 32881627 DOI: 10.1152/japplphysiol.00427.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Tattooing of the skin involves repeated needle insertions to deposit ink into the dermal layer of the skin, potentially damaging eccrine sweat glands and the cutaneous vasculature. This study tested the hypothesis that reflex increases in sweat rate (SR) and cutaneous vasodilation are blunted in tattooed skin (TAT) compared with adjacent healthy skin (CON) during a passive whole body heat stress (WBH). Ten individuals (5 males and 5 females) with a sufficient area of tattooed skin participated in the study. Intestinal temperature (Tint), skin temperature (Tskin), skin blood flow (laser Doppler flux; LDF), and SR were continuously measured during normothermic baseline (34°C water perfusing a tube-lined suit) and WBH (increased Tint 1.0°C via 48°C water perfusing suit). SR throughout WBH was lower for TAT compared with CON (P = 0.033). Accumulated sweating responses during WBH (area under curve) were attenuated in TAT relative to CON (23.1 ± 12.9, 26.9 ± 14.5 mg/cm2, P = 0.043). Sweating threshold, expressed as the onset of sweating in time or Tint from the initiation of WBH, was not different between TAT and CON. Tattooing impeded the ability to obtain LDF measurements. These data suggest that tattooing functionally damages secretion mechanisms, affecting the reflex capacity of the gland to produce sweat, but does not appear to affect neural signaling to initiate sweating. Decreased sweating could impact heat dissipation especially when tattooing covers a higher percentage of body surface area and could be considered a potential long-term clinical side effect of tattooing.NEW & NOTEWORTHY This study is the first to assess the reflex control of sweating in tattooed skin. The novel findings are twofold. First, attenuated increases in sweat rate were observed in tattooed skin compared with adjacent healthy non-tattooed skin in response to a moderate increase (1.0°C) in internal temperature during a passive whole body heat stress. Second, reduced sweating in tattooed skin is likely related to functional damage to the secretory mechanisms of eccrine sweat glands, rendering it less responsive to cholinergic stimulation.
Collapse
Affiliation(s)
| | - Dustin R Allen
- Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas.,Health Sciences, Boston University, Boston, Massachusetts
| | - Mu Huang
- Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas.,Applied Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Faith K Pizzey
- Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas
| | - Iqra M Parupia
- Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas
| | - Thad E Wilson
- Department of Physiology, University of Kentucky College of Medicine, Lexington, Kentucky
| | - Scott L Davis
- Applied Physiology and Wellness, Southern Methodist University, Dallas, Texas.,Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, Texas
| |
Collapse
|
38
|
Validity of a wearable sweat rate monitor and routine sweat analysis techniques using heat acclimation. J Therm Biol 2020; 90:102577. [DOI: 10.1016/j.jtherbio.2020.102577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/22/2020] [Accepted: 03/22/2020] [Indexed: 01/24/2023]
|
39
|
Effects of Casein Hydrolysate Ingestion on Thermoregulatory Responses in Healthy Adults during Exercise in Heated Conditions: A Randomized Crossover Trial. Nutrients 2020; 12:nu12030867. [PMID: 32213899 PMCID: PMC7146450 DOI: 10.3390/nu12030867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/19/2020] [Accepted: 03/22/2020] [Indexed: 11/17/2022] Open
Abstract
Food ingestion has been shown to affect thermoregulation during exercise, while the impact of protein degradant consumption remains unclear. We investigated the effects of casein hydrolysate ingestion on thermoregulatory responses during exercise in the heat. In a randomized, placebo-controlled, double-blind, crossover trial, five men and five women consumed either 5 g of casein hydrolysate or placebo. Thirty minutes after ingestion, participants cycled at 60% VO2max until voluntary exhaustion wearing a hot-water (43 °C) circulation suit. Exercise time to exhaustion, body core temperature, forearm sweat rate, and forearm cutaneous vascular conductance did not differ different between the conditions. However, chest sweat rate and mean skin temperature increased upon casein hydrolysate ingestion compared with placebo during exercise. Increased chest sweat rate upon casein hydrolysate ingestion was associated with elevated sudomotor sensitivity to increasing body core temperature, but not the temperature threshold for initiating sweating. A positive correlation was found between chest sweat rate and plasma total amino acid concentration during exercise. These results suggest that casein hydrolysate ingestion enhances sweating heterogeneously by increasing peripheral sensitivity of the chest's sweating mechanism and elevating skin temperature during exercise in the heat. However, the physiological link between plasma amino acid concentration and sweat rate remains unclear.
Collapse
|
40
|
Weng T, Wu P, Zhang W, Zheng Y, Li Q, Jin R, Chen H, You C, Guo S, Han C, Wang X. Regeneration of skin appendages and nerves: current status and further challenges. J Transl Med 2020; 18:53. [PMID: 32014004 PMCID: PMC6996190 DOI: 10.1186/s12967-020-02248-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/28/2020] [Indexed: 12/14/2022] Open
Abstract
Tissue-engineered skin (TES), as an analogue of native skin, is promising for wound repair and regeneration. However, a major drawback of TES products is a lack of skin appendages and nerves to enhance skin healing, structural integrity and skin vitality. Skin appendages and nerves are important constituents for fully functional skin. To date, many studies have yielded remarkable results in the field of skin appendages reconstruction and nerve regeneration. However, patients often complain about a loss of skin sensation and even cutaneous chronic pain. Restoration of pain, temperature, and touch perceptions should now be a major challenge to solve in order to improve patients’ quality of life. Current strategies to create skin appendages and sensory nerve regeneration are mainly based on different types of seeding cells, scaffold materials, bioactive factors and involved signaling pathways. This article provides a comprehensive overview of different strategies for, and advances in, skin appendages and sensory nerve regeneration, which is an important issue in the field of tissue engineering and regenerative medicine.
Collapse
Affiliation(s)
- Tingting Weng
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Pan Wu
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Wei Zhang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Yurong Zheng
- Department of Breast Surgery, Zhejiang Cancer Hospital, Hangzhou, 310022, China
| | - Qiong Li
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Ronghua Jin
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Haojiao Chen
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Chuangang You
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Songxue Guo
- Department of Plastic Surgery, Second Affiliated Hospital of Zhejiang University, Hangzhou, 310009, China
| | - Chunmao Han
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China
| | - Xingang Wang
- Department of Burns & Wound Care Center, Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, 310009, China.
| |
Collapse
|
41
|
Benjamin CL, Sekiguchi Y, Fry LA, Casa DJ. Performance Changes Following Heat Acclimation and the Factors That Influence These Changes: Meta-Analysis and Meta-Regression. Front Physiol 2019; 10:1448. [PMID: 31827444 PMCID: PMC6890862 DOI: 10.3389/fphys.2019.01448] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/08/2019] [Indexed: 11/17/2022] Open
Abstract
Heat acclimation (HA) is the process of intentional and consistent exercise in the heat that results in positive physiological adaptations, which can improve exercise performance both in the heat and thermoneutral conditions. Previous research has indicated the many performance benefits of HA, however, a meta-analysis examining the magnitude of different types of performance improvement is absent. Additionally, there are several methodological discrepancies in the literature that could lead to increased variability in performance improvement following HA and no previous study has examined the impact of moderators on performance improvement following HA. Therefore, the aim of this study was two-fold; (1) to perform a meta-analysis to examine the magnitude of changes in performance following HA in maximal oxygen consumption (VO2max), time to exhaustion, time trial, mean power, and peak power tests; (2) to determine the impact of moderators on results of these performance tests. Thirty-five studies met the inclusion/exclusion criteria with 23 studies that assessed VO2max (n = 204), 24 studies that assessed time to exhaustion (n = 232), 10 studies that performed time trials (n = 101), 7 studies that assessed mean power (n = 67), and 10 papers that assessed peak power (n = 88). Data are reported as Hedge's g effect size (ES), and 95% confidence intervals (95% CI). Statistical significance was set to p < 0.05, a priori. The magnitude of change following HA was analyzed, with time to exhaustion demonstrating the largest performance enhancement (ES [95% CI], 0.86 [0.71, 1.01]), followed by time trial (0.49 [0.26, 0.71]), mean power (0.37 [0.05, 0.68]), VO2max (0.30 [0.07, 0.53]), and peak power (0.29 [0.09, 0.48]) (p < 0.05). When all of the covariates were analyzed as individual models, induction method, fitness level, heat index in time to exhaustion (coefficient [95% CI]; induction method, -0.69 [-1.01, -0.37], p < 0.001; fitness level, 0.04 [0.02, 0.06], p < 0.001; heat index, 0.04 [0.02, 0.07], p < 0.0001) and induction length in mean power (coefficient [95% CI]; induction length 0.15 [0.05, 0.25], p = 0.002) significantly impacted the magnitude of change. Sport scientists and researchers can use the findings from this meta-analysis to customize HA induction. For time to exhaustion improvements, HA implementation should focus on induction method and baseline fitness, while the training and recovery balance could lead to optimal time trial performance.
Collapse
Affiliation(s)
- Courteney Leigh Benjamin
- Department of Kinesiology, Korey Stringer Institute, University of Connecticut, Storrs, CT, United States
| | | | | | | |
Collapse
|
42
|
Cramer MN, Moralez G, Huang MU, Crandall CG. No Thermoregulatory Impairment in Skin Graft Donor Sites during Exercise-Heat Stress. Med Sci Sports Exerc 2019; 51:868-873. [PMID: 30614899 DOI: 10.1249/mss.0000000000001883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The US Army's Standards of Medical Fitness, AR 40-501, state that "Prior burn injury (to include donor sites) involving a total body surface area of 40% or more does not meet the standard." Inclusion of donor sites (sites harvested for skin grafts) in this standard implies that thermoregulatory function is impaired within donor sites during exercise-heat stress; however, supporting evidence is currently lacking. PURPOSE To test the hypothesis that well-healed donor and noninjured sites demonstrate similar elevations in skin blood flow and sweating during exercise-induced hyperthermia. METHODS Twenty burn survivors (>1 yr postinjury; four females) cycled for 60 min in a 39.7°C ± 0.3°C and 21.1% ± 3.3% relative humidity environment at approximately 50% of maximal aerobic capacity. Core and mean skin temperatures were recorded throughout exercise. Skin blood flow (laser-Doppler imaging) was measured at baseline and after exercise within donor (LDFDON) and adjacent noninjured control (LDFCON) sites. At 45 min of exercise, local sweat rates (Technical Absorbents) were measured within the same donor (LSRDON) and noninjured (LSRCON) areas. RESULTS After 60 min of exercise, core and skin temperatures reached 38.2°C ± 0.4°C and 35.5°C ± 1.2°C, respectively. The increase in skin blood flow from baseline to end-exercise (LDFDON, 91.6 ± 44.5 AU; LDFCON, 106.0 ± 61.6 AU; P = 0.17) and local sweat rates (LSRDON, 0.46 ± 0.26 mg·cm·min; LSRCON, 0.53 ± 0.25 mg·cm·min; P = 0.14) were not different between donor and noninjured control sites. CONCLUSIONS Well-healed donor sites retain the ability to increase skin blood flow and sweating during exercise heat stress, providing evidence against the inclusion of donor sites when determining whether a burn injury meets the Army's Standards of Medical Fitness.
Collapse
Affiliation(s)
- Matthew N Cramer
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, TX
| | - Gilbert Moralez
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, TX
| | - M U Huang
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, TX.,Health Care Sciences, University of Texas Southwestern Medical Center, Dallas, TX
| | - Craig G Crandall
- Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas and University of Texas Southwestern Medical Center, Dallas, TX
| |
Collapse
|
43
|
Allen DR, Huang MU, Morris NB, Chaseling GK, Frohman EM, Jay O, Davis SL. Impaired Thermoregulatory Function during Dynamic Exercise in Multiple Sclerosis. Med Sci Sports Exerc 2019; 51:395-404. [PMID: 30779715 DOI: 10.1249/mss.0000000000001821] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Impairments in sudomotor function during passive whole-body heating have been reported in multiple sclerosis (MS), a demyelinating disease of the CNS that disrupts autonomic function. However, the capability of the thermoregulatory system to control body temperature during exercise has never been assessed in MS. Thus, the aim of the present study was to test the hypothesis that thermoregulatory function is impaired in MS patients compared with healthy controls (CON) exercising at similar rates of metabolic heat production. METHODS Sweating and skin blood flow responses were compared between 12 individuals diagnosed with relapsing-remitting MS (9 females, 3 males) and 12 sex-, age-, mass-, and BSA-matched CON during a single bout of cycling exercise (rate of metabolic heat production: ∼4.5 W·kg) for 60 min in a climate-controlled room (25°C, 30% RH). RESULTS Individuals with MS exhibited an attenuated increase in cumulative whole-body sweat loss after 30 min (MS, 72 ± 51 g; CON, 104 ± 37 g; P = 0.04) and 60 min (MS, 209 ± 94 g; CON, 285 ± 62 g; P = 0.02), as well as lower sweating thermosensitivity (MS, 0.49 ± 0.26 mg·cm·min·°C; CON, 0.86 ± 0.30 mg·cm·min·°C; P = 0.049). Despite evidence for thermoregulatory dysfunction, there were no differences between MS and CON in esophageal or rectal temperatures at 30- or 60-min time points (P > 0.05). Cutaneous vasculature responses were also not different in MS compared with CON (P > 0.05). CONCLUSION Taken together, MS blunts sweating responses during exercise while cutaneous vasculature responses are preserved. Altered mechanisms of body temperature regulation in persons with MS may lead to temporary worsening of disease symptoms and limit exercise tolerance under more thermally challenging conditions.
Collapse
Affiliation(s)
- Dustin R Allen
- Applied Physiology and Wellness, Southern Methodist University, Dallas, TX.,Department of Health Sciences, Boston University, Boston, MA
| | - M U Huang
- Applied Physiology and Wellness, Southern Methodist University, Dallas, TX
| | - Nathan B Morris
- Thermal Ergonomics Laboratory, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, AUSTRALIA
| | - Georgia K Chaseling
- Thermal Ergonomics Laboratory, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, AUSTRALIA
| | - Elliot M Frohman
- Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX
| | - Ollie Jay
- Thermal Ergonomics Laboratory, Faculty of Health Sciences, The University of Sydney, Lidcombe, NSW, AUSTRALIA.,Charles Perkins Centre, The University of Sydney, Camperdown, NSW, AUSTRALIA
| | - Scott L Davis
- Applied Physiology and Wellness, Southern Methodist University, Dallas, TX.,Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX
| |
Collapse
|
44
|
The origin, significance and plasticity of the thermoeffector thresholds: Extrapolation between humans and laboratory rodents. J Therm Biol 2019; 85:102397. [DOI: 10.1016/j.jtherbio.2019.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/05/2019] [Accepted: 08/05/2019] [Indexed: 01/07/2023]
|
45
|
Amano T, Sugiyama Y, Okumura J, Fujii N, Kenny GP, Nishiyasu T, Inoue Y, Kondo N, Sasagawa K, Enoki Y, Maejima D. Effects of isomaltulose ingestion on postexercise hydration state and heat loss responses in young men. Exp Physiol 2019; 104:1494-1504. [PMID: 31400765 DOI: 10.1113/ep087843] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 11/08/2022]
Abstract
NEW FINDINGS What is the central question of this study? What are the effects of isomaltulose, an ingredient in carbohydrate-electrolyte beverages to maintain glycaemia and attenuate the risk of dehydration during exercise heat stress, on postexercise rehydration and physiological heat loss responses? What is the main finding and its importance? Consumption of a 6.5% isomaltulose-electrolyte beverage following exercise heat stress restored hydration following a 2 h recovery as compared to a 2% solution or water only. While the 6.5% isomaltulose-electrolytes increased plasma volume and plasma osmolality, which are known to modulate postexercise heat loss, sweating and cutaneous vascular responses did not differ between conditions. Consequently, ingestion beverages containing 6.5% isomaltulose-electrolytes enhanced postexercise rehydration without affecting heat loss responses. ABSTRACT Isomaltulose is a disaccharide carbohydrate widely used during exercise to maintain glycaemia and hydration. We investigated the effects of ingesting a beverage containing isomaltulose and electrolytes on postexercise hydration state and physiological heat loss responses. In a randomized, single-blind cross-over design, 10 young healthy men were hypohydrated by performing up to three 30 min successive moderate-intensity (50% heart rate reserve) bouts of cycling, each separated by 10 min, while wearing a water-perfusion suit heated to 45°C. The protocol continued until a 2% reduction in body mass was achieved. Thereafter, participants performed a final 15 min moderate-intensity exercise bout followed by a 2 h recovery. Following cessation of exercise, participants ingested a beverage consisting of (i) water only (Water), (ii) 2% isomaltulose (CHO-2%), or (iii) 6.5% isomaltulose (CHO-6.5%) equal to the volume of 2% body mass loss within the first 30 min of the recovery. Changes in plasma volume (ΔPV) after fluid ingestion were greater for CHO-6.5% compared with CHO-2% (120 min postexercise) and Water (90 and 120 min) (all P ≤ 0.040). Plasma osmolality remained elevated with CHO-6.5% compared with consumption of the other beverages at 30 and 90 min postexercise (all P ≤ 0.050). Urine output tended to be reduced with CHO-6.5% compared to other fluid conditions (main effect, P = 0.069). Rectal and mean skin temperatures, chest sweat rate and cutaneous perfusion did not differ between conditions (all P > 0.05). In conclusion, compared with CHO-2% and Water, consuming a beverage consisting of CHO-6.5% and electrolytes during recovery under heat stress enhances PV recovery without modulating physiological heat loss responses.
Collapse
Affiliation(s)
- Tatsuro Amano
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Yuki Sugiyama
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Junya Okumura
- Laboratory for Exercise and Environmental Physiology, Faculty of Education, Niigata University, Niigata, Japan
| | - Naoto Fujii
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Japan
| | - Glen P Kenny
- Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Canada
| | - Takeshi Nishiyasu
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba City, Japan
| | - Yoshimitsu Inoue
- Laboratory for Human Performance Research, Osaka International University, Osaka, Japan
| | - Narihiko Kondo
- Laboratory for Applied Human Physiology, Graduate School of Human Development and Environment, Kobe University, Kobe, Japan
| | - Katsumi Sasagawa
- Bourbon Institutes of Health Nutraceuticals Science Laboratory, Bourbon Corporation, Niigata, Japan
| | - Yasuaki Enoki
- Bourbon Institutes of Health Nutraceuticals Science Laboratory, Bourbon Corporation, Niigata, Japan
| | - Daisuke Maejima
- Bourbon Institutes of Health Nutraceuticals Science Laboratory, Bourbon Corporation, Niigata, Japan
| |
Collapse
|
46
|
Nyein HYY, Bariya M, Kivimäki L, Uusitalo S, Liaw TS, Jansson E, Ahn CH, Hangasky JA, Zhao J, Lin Y, Happonen T, Chao M, Liedert C, Zhao Y, Tai LC, Hiltunen J, Javey A. Regional and correlative sweat analysis using high-throughput microfluidic sensing patches toward decoding sweat. SCIENCE ADVANCES 2019; 5:eaaw9906. [PMID: 31453333 PMCID: PMC6697435 DOI: 10.1126/sciadv.aaw9906] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/08/2019] [Indexed: 05/21/2023]
Abstract
Recent technological advancements in wearable sensors have made it easier to detect sweat components, but our limited understanding of sweat restricts its application. A critical bottleneck for temporal and regional sweat analysis is achieving uniform, high-throughput fabrication of sweat sensor components, including microfluidic chip and sensing electrodes. To overcome this challenge, we introduce microfluidic sensing patches mass fabricated via roll-to-roll (R2R) processes. The patch allows sweat capture within a spiral microfluidic for real-time measurement of sweat parameters including [Na+], [K+], [glucose], and sweat rate in exercise and chemically induced sweat. The patch is demonstrated for investigating regional sweat composition, predicting whole-body fluid/electrolyte loss during exercise, uncovering relationships between sweat metrics, and tracking glucose dynamics to explore sweat-to-blood correlations in healthy and diabetic individuals. By enabling a comprehensive sweat analysis, the presented device is a crucial tool for advancing sweat testing beyond the research stage for point-of-care medical and athletic applications.
Collapse
Affiliation(s)
- Hnin Yin Yin Nyein
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Berkeley Sensor and Actuator Center, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Mallika Bariya
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Berkeley Sensor and Actuator Center, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Liisa Kivimäki
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Sanna Uusitalo
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Tiffany Sun Liaw
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Elina Jansson
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Christine Heera Ahn
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
| | - John A. Hangasky
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jiangqi Zhao
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Yuanjing Lin
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Tuomas Happonen
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Minghan Chao
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Christina Liedert
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Yingbo Zhao
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Li-Chia Tai
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Berkeley Sensor and Actuator Center, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
| | - Jussi Hiltunen
- VTT-Technical Research Centre of Finland, Kaitoväylä 1, FIN-90590 Oulu, Finland
| | - Ali Javey
- Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720, USA
- Berkeley Sensor and Actuator Center, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, Berkeley, CA 94720, USA
- Corresponding author.
| |
Collapse
|
47
|
Na CH, Sharma N, Madugundu AK, Chen R, Aksit MA, Rosson GD, Cutting GR, Pandey A. Integrated Transcriptomic and Proteomic Analysis of Human Eccrine Sweat Glands Identifies Missing and Novel Proteins. Mol Cell Proteomics 2019; 18:1382-1395. [PMID: 30979791 PMCID: PMC6601213 DOI: 10.1074/mcp.ra118.001101] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 03/22/2019] [Indexed: 12/12/2022] Open
Abstract
The eccrine sweat gland is an exocrine gland that is involved in the secretion of sweat for control of temperature. Malfunction of the sweat glands can result in disorders such as miliaria, hyperhidrosis and bromhidrosis. Understanding the transcriptome and proteome of sweat glands is important for understanding their physiology and role in diseases. However, no systematic transcriptome or proteome analysis of sweat glands has yet been reported. Here, we isolated eccrine sweat glands from human skin by microdissection and performed RNA-seq and proteome analysis. In total, ∼138,000 transcripts and ∼6,100 proteins were identified. Comparison of the RNA-seq data of eccrine sweat glands to other human tissues revealed the closest resemblance to the cortex region of kidneys. The proteome data showed enrichment of proteins involved in secretion, reabsorption, and wound healing. Importantly, protein level identification of the calcium ion channel TRPV4 suggests the importance of eccrine sweat glands in re-epithelialization of wounds and prevention of dehydration. We also identified 2 previously missing proteins from our analysis. Using a proteogenomic approach, we identified 7 peptides from 5 novel genes, which we validated using synthetic peptides. Most of the novel proteins were from short open reading frames (sORFs) suggesting that many sORFs still remain to be annotated in the human genome. This study presents the first integrated analysis of the transcriptome and proteome of the human eccrine sweat gland and would become a valuable resource for studying sweat glands in physiology and disease.
Collapse
Affiliation(s)
- Chan Hyun Na
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;; §Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland;; ¶Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland;; ‖Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Neeraj Sharma
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Anil K Madugundu
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;; §§Institute of Bioinformatics, Bangalore, India;; ¶¶Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India
| | - Ruiqiang Chen
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;; §Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Melis Atalar Aksit
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Gedge D Rosson
- ‖‖Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Garry R Cutting
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;.
| | - Akhilesh Pandey
- From the ‡McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;; §Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland;; Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland;; ‡‡Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland;.
| |
Collapse
|
48
|
Schlader ZJ, Vargas NT. Regulation of Body Temperature by Autonomic and Behavioral Thermoeffectors. Exerc Sport Sci Rev 2019; 47:116-126. [PMID: 30632999 DOI: 10.1249/jes.0000000000000180] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermoregulation is accomplished via autonomic and behavioral responses. Autonomic responses may influence decisions to behaviorally thermoregulate. For instance, in addition to changes in body temperature, skin wettedness and involuntary muscle contraction, which occur subsequent to sweating and shivering, likely modulate thermal behavior. This autonomic-behavioral interaction provides the rationale for our hypothesis that thermoregulatory behavior decreases the requirement for autonomic responses.
Collapse
Affiliation(s)
- Zachary J Schlader
- Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY
| | | |
Collapse
|
49
|
Harris PR, Keen DA, Constantopoulos E, Weninger SN, Hines E, Koppinger MP, Khalpey ZI, Konhilas JP. Fluid type influences acute hydration and muscle performance recovery in human subjects. J Int Soc Sports Nutr 2019; 16:15. [PMID: 30947727 PMCID: PMC6449982 DOI: 10.1186/s12970-019-0282-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 03/19/2019] [Indexed: 11/16/2022] Open
Abstract
Background Exercise and heat trigger dehydration and an increase in extracellular fluid osmolality, leading to deficits in exercise performance and thermoregulation. Evidence from previous studies supports the potential for deep-ocean mineral water to improve recovery of exercise performance post-exercise. We therefore wished to determine whether acute rehydration and muscle strength recovery was enhanced by deep-ocean mineral water following a dehydrating exercise, compared to a sports drink or mountain spring water. We hypothesized that muscle strength would decrease as a result of dehydrating exercise, and that recovery of muscle strength and hydration would depend on the type of rehydrating fluid. Methods Using a counterbalanced, crossover study design, female (n = 8) and male (n = 9) participants performed a dehydrating exercise protocol under heat stress until achieving 3% body mass loss. Participants rehydrated with either deep-ocean mineral water (Deep), mountain spring water (Spring), or a carbohydrate-based sports drink (Sports) at a volume equal to the volume of fluid loss. We measured relative hydration using salivary osmolality (Sosm) and muscle strength using peak torque from a leg extension maneuver. Results Sosm significantly increased (p < 0.0001) with loss of body mass during the dehydrating exercise protocol. Males took less time (90.0 ± 18.3 min; P < 0.0034) to reach 3% body mass loss when compared to females (127.1 ± 20.0 min). We used a mono-exponential model to fit the return of Sosm to baseline values during the rehydrating phase. Whether fitting stimulated or unstimulated Sosm, male and female participants receiving Deep as the hydrating fluid exhibited the most rapid return to baseline Sosm (p < 0.0001) regardless of the fit parameter. Males compared to females generated more peak torque (p = 0.0005) at baseline (308.3 ± 56.7 Nm vs 172.8 ± 40.8 Nm, respectively) and immediately following 3% body mass loss (276.3 ± 39.5 Nm vs 153.5 ± 35.9 Nm). Participants experienced a loss. We also identified a significant effect of rehydrating fluid and sex on post-rehydration peak torque (p < 0.0117). Conclusion We conclude that deep-ocean mineral water positively affected hydration recovery after dehydrating exercise, and that it may also be beneficial for muscle strength recovery, although this, as well as the influence of sex, needs to be further examined by future research. Trial registration clincialtrials.gov PRS, NCT02486224. Registered 08 June 2015.
Collapse
Affiliation(s)
- Preston R Harris
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Douglas A Keen
- Department of Physiology, University of Arizona, Tucson, AZ, 85721, USA
| | - Eleni Constantopoulos
- Department of Physiology, University of Arizona, Tucson, AZ, 85721, USA.,Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, AZ, 85724, USA
| | | | - Eric Hines
- Department of Physiology, University of Arizona, Tucson, AZ, 85721, USA.,Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, AZ, 85724, USA
| | - Matthew P Koppinger
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Zain I Khalpey
- Department of Surgery, University of Arizona, Tucson, AZ, 85721, USA
| | - John P Konhilas
- Department of Physiology, University of Arizona, Tucson, AZ, 85721, USA. .,Sarver Molecular Cardiovascular Research Program, University of Arizona, Tucson, AZ, 85724, USA.
| |
Collapse
|
50
|
Moreira-Marconi E, Moura-Fernandes MC, Lopes-Souza P, Teixeira-Silva Y, Reis-Silva A, Marchon RM, Guedes-Aguiar EDO, Paineiras-Domingos LL, de Sá-Caputo DDC, Morel DS, Dionello CF, De-Carvalho SO, Pereira MJDS, Francisca-Santos A, Silva-Costa G, Olímpio-Souza M, Lemos-Santos TR, Asad NR, Xavier VL, Taiar R, Sonza A, Seixas A, Cochrane DJ, Bernardo-Filho M. Evaluation of the temperature of posterior lower limbs skin during the whole body vibration measured by infrared thermography: Cross-sectional study analysis using linear mixed effect model. PLoS One 2019; 14:e0212512. [PMID: 30865641 PMCID: PMC6415782 DOI: 10.1371/journal.pone.0212512] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 02/04/2019] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Whole body vibration exercise (WBVE) has been shown to improve muscular strength and power, and increase peripheral blood flow. The aim of this study was to evaluate the behavior of the skin temperature (Tsk) on regions of the lower limbs from an acute bout of WBVE. METHODS AND FINDINGS Cross-sectional study approved by local ethics committee (Certificado de Apresentação para Apreciação Ética-CAAE-19826413.8.0000.5259) and Trial registration (Registro Brasileiro de Ensaios Clínicos-REBEC-RBR-738wng). Using Infrared thermography (IRT), Tsk and thermal symmetry of the posterior lower extremities (thigh, knee, calf and heel) were examined in 19 healthy participants. IRT was assessed during 60-second WBVE exposures of 0, 30 and 50 Hz. From the adjusted linear mixed effects model, vibration frequency, time and regions of the lower extremity were significant (p<0.001). However, the variable laterality was not significant (p = 0.067) and was excluded from the adjusted statistical model. The adjusted model was significant (p<0.00001) and all variables in the model were significant (p<0.01) indicating that Tsk decreases with time, independently of the vibration frequency. The value of the Pseudo-R-Squared for the model was 0.8376. The presented mathematical model of the current study may be useful to justify the patterns observed for all vibration frequencies between and 0 and 50 Hz. The main limitations of the study were the reduced time of the intervention and not having evaluated other regions of the body. CONCLUSIONS The acute exposure of 60-second mechanical vibration has effect on the behavior of Tsk of the posterior region of the lower limbs, which is likely to be associated with a decrease on the blood flow due to WBVE. It is speculated that during WBVE a greater supply of blood is required where the body responds by shunting blood flow from the skin to working muscle in the first seconds of exercise. Further investigative work is required to verify this hypothesis.
Collapse
Affiliation(s)
- Eloá Moreira-Marconi
- Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcia Cristina Moura-Fernandes
- Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Patrícia Lopes-Souza
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ygor Teixeira-Silva
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline Reis-Silva
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Mestrado Profissional em Saúde, Medicina Laboratorial e Tecnologia Forense, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renata Marques Marchon
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Mestrado Profissional em Saúde, Medicina Laboratorial e Tecnologia Forense, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eliane de Oliveira Guedes-Aguiar
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Rio Grande do Norte, Brazil
| | - Laisa Liane Paineiras-Domingos
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Faculdade Bezerra de Araújo, Rio de Janeiro, Brazil
| | - Danúbia da Cunha de Sá-Caputo
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Faculdade Bezerra de Araújo, Rio de Janeiro, Brazil
- Centro Universitário Serra dos Órgãos, Teresópolis, Rio de Janeiro, Brasil
| | - Danielle Soares Morel
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carla Fontoura Dionello
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sérgio Oliveira De-Carvalho
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mario José dos Santos Pereira
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Arlete Francisca-Santos
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gefferson Silva-Costa
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcio Olímpio-Souza
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tânia Regina Lemos-Santos
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Nasser Ribeiro Asad
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vinicius Layter Xavier
- Departamento de Estatística, Instituto de Matemática e Estatística, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Redha Taiar
- Groupe de Recherche en Sciences pour l’Ingénieur (GRESPI)/Université de Reims Champagne Ardenne, France
| | - Anelise Sonza
- Universidade Estadual de Santa Catarina, Florianópolis, SC, Brazil
| | - Adérito Seixas
- Escola Superior de Saúde, Universidade Fernando Pessoa, Porto, Portugal
| | - Darryl J. Cochrane
- School of Sport, Exercise & Nutrition, Massey University, Palmerston North, New Zealand
| | - Mario Bernardo-Filho
- Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Vibrações Mecânicas e Práticas Integrativas—LAVIMPI, Instituto Biologia Roberto Alcântara Gomes e Policlínica Américo Piquet Carneiro, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|