1
|
Vajdi M, Musazadeh V, Zareei M, Adeli S, Karimi A, Hojjati A, Darzi M, Shoorei H, Abbasalizad Farhangi M. The effects of whey protein on blood pressure: A systematic review and dose-response meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis 2023; 33:1633-1646. [PMID: 37419751 DOI: 10.1016/j.numecd.2023.05.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 07/09/2023]
Abstract
AIMS This systematic review and dose-response meta-analysis was conducted to summarize data from available clinical trials on the effects of whey protein (WP) supplementation on blood pressure (BP) in adults. DATA SYNTHESIS A comprehensive literature search was conducted in the electronic databases PubMed, Web of Science, ProQuest, Embase, and SCOPUS from inception to October 2022. Weighted mean differences (WMD) and 95% confidence intervals (CI) were calculated to assess pooled effect sizes. Heterogeneity between studies was assessed using the Cochran's Q test and I2. Subgroup analysis was performed to assess potential sources of heterogeneity. The dose-response relationship was assessed using fractional polynomial modeling. Of the 2,840 records, 18 studies with 1,177 subjects were included. Pooled analysis showed that whey protein supplementation resulted in a significant reduction in systolic blood pressure (WMD: -1.54 mmHg; 95% CI: -2.85 to -0.23, p = 0.021), with significant heterogeneity between studies (I2 = 64.2%, p < 0.001), but not for diastolic blood pressure (DBP) (WMD: -0.27 mmHg; 95% CI: -1.14, 0.59, p = 0.534) with high heterogeneity between studies (I2 = 64.8%, p < 0.001). However, WP supplementation significantly reduced DBP at a dose of ˃30 g/day, in RCTs that used WP isolate powder for their intervention, in sample sizes ≤100, in studies with an intervention duration of ≤10 weeks, and in those studies that were conducted in patients with hypertension and had participants with a BMI of 25-30 kg/m2. CONCLUSION This meta-analysis demonstrated that WP intake significantly reduced SBP levels. Further large-scale studies are needed to specify the exact mechanism, and optimal dosage of WP supplementation to obtain a beneficial effect on BP.
Collapse
Affiliation(s)
- Mahdi Vajdi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Vali Musazadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran; School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Zareei
- Faculty of Medicine, Islamic Azad University, Sari Branch, Sari, Iran
| | - Shaghayegh Adeli
- Department of Biochemistry and Diet Therapy, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arash Karimi
- Traditional Medicine and Hydrotherapy Research Center, Ardabil University of Medical Sciences, Ardabil, Iran; Nutrition Research Center, Department of Clinical Nutrition, School of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Ali Hojjati
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Melika Darzi
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran; Clinical Research Development Unit of Tabriz Valiasr Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdieh Abbasalizad Farhangi
- Department of Community Nutrition, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
2
|
Zouhal H, Rhibi F, Salhi A, Jayavel A, Hackney AC, Saeidi A, Govindasamy K, Tourny-Chollet C, Clark CCT, Abderrahman AB. The Effects of Exercise Training on Plasma Volume Variations: A Systematic Review. Int J Sports Med 2023. [PMID: 34638157 DOI: 10.1055/a-1667-6624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The aim of this systematic review was to summarize the evidence on the acute and long-term effects of exercise training on PV, in both trained and untrained individuals and to examine associations between changes in %PVV and change in physical/physiological performance. Despite the status of participants and the exercise duration or intensity, all the acute studies reported a significant decrease of PV (effect size: 0.85<d<3.45, very large), and ranged between 7 and 19.9%. In untrained individuals, most of studies reported a significant increase of PV in response to different kind of training including endurance training and high intensity interval training (effect size: 0.19<d<3.52, small to very large), and ranged from 6.6 to 16%. However, in trained individuals the results are equivocal. We showed that acute exercise appears to induce a significant decrease of PV in both healthy untrained and trained individuals in response to several exercise modalities. Moreover, there is evidence that long-term exercise training induced a significant increase of PV in healthy untrained individuals. However, it seems that there is no consensus concerning the effect of long-term exercise training on PV in trained individuals.
Collapse
Affiliation(s)
- Hassane Zouhal
- University of Rennes 2, M2S (Laboratoire Mouvement, Sport, Santé) - EA 1274, Rennes, France
| | - Fatma Rhibi
- University of Rennes 2, M2S (Laboratoire Mouvement, Sport, Santé) - EA 1274, Rennes, France.,HP2 laboratory, INSERM U1042, University Grenoble Alpes, Grenoble, France
| | - Amal Salhi
- Higher Institute of Sport and Physical Education of Ksar-Saïd, Manouba, Tunisia
| | - Ayyappan Jayavel
- SRM College of Physiotherapy, SRM Institute of Science and Technology, Kattankulathur Kancheepuram (DT), Tamilnadu, India
| | - Anthony C Hackney
- Departments of Exercise & Sport Science and Nutrition, University of North Carolina, Chapel Hill, NC, United States
| | - Ayoub Saeidi
- Department of Physical Education and Sport Sciences, University of Kurdistan, Sanandaj, Iran
| | - Karuppasamy Govindasamy
- Department of Physical Education & Sports Science, SRM Institute of Science and Technology, Kattankulathur, Tamilnadu, India
| | | | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, United-Kingdom
| | | |
Collapse
|
3
|
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: 59] [Impact Index Per Article: 29.5] [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
|
4
|
Effects of Yogurt Intake on Cardiovascular Strain during Outdoor Interval Walking Training by Older People in Midsummer: A Randomized Controlled Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19084715. [PMID: 35457579 PMCID: PMC9024697 DOI: 10.3390/ijerph19084715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022]
Abstract
We examined whether post-exercise yogurt intake reduced cardiovascular strain during outdoor interval walking training (IWT) in older people during midsummer. The IWT is a training regimen repeating slow and fast walking at ~40% and ≥70% peak aerobic capacity, respectively, for 3 min each per set, ≥5 sets per day, and ≥4 days/wk. We randomly divided 28 male and 75 female older people (~73 yr), who had performed IWT ≥12 months, into a carbohydrate group (CHO-G) consuming jelly (45 g CHO, 180 kcal) and a yogurt group (YGT-G) consuming a yogurt drink (9.3 g protein, 39 g CHO, 192 kcal) immediately after daily IWT for 56 days while monitoring exercise intensity and heart rate (HR) with portable devices. We analyzed the results in 39 subjects for the CHO-G and 37 subjects for the YGT-G who performed IWT ≥ 4 days/wk, ≥60 min total fast walking/wk, and ≥4 sets of each walk/day. We found that the mean HR for fast walking decreased significantly from the baseline after the 30th day in the YGT-G (p < 0.03), but not in the CHO-G (p = 1.00). There were no significant differences in training achievements between the groups. Thus, post-exercise yogurt intake might reduce cardiovascular strain during outdoor walking training in older people.
Collapse
|
5
|
Uchida K, Ogawa Y, Kataoka Y, Manabe K, Aida T, Kamijo YI, Takahashi S, Ikefuchi R, Nose H, Masuki S. New Portable Device for Continuous Measurement of Sweat Rate under Heat Stress during Field Tests. J Appl Physiol (1985) 2022; 132:974-983. [PMID: 35297691 DOI: 10.1152/japplphysiol.00155.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We have developed a portable method to measure sweat rate (SR) under heat stress during field tests. We randomly divided 15 males and 17 females (23-78years) into a group (EG) to determine an equation to convert a unit of SR (mmHg) by the portable method to that (mg·min-1·cm-2) by the ventilation method, and another group (VG) to validate the equation. Since we repeated measurements twice in three subjects, we randomly assigned the two measurements to one of the two groups and analyzed the results in 18 and 17 subjects for EG and VG, respectively. Subjects cycled for 20 min at moderate intensity in a warm environment while chest SR was simultaneously measured with a capsule installed with 4.8g of silica gel and two microfans (8.4cm3 volume) and with another capsule (12.6cm2 area) ventilated with dry air at 1.5l·min-1. Since the esophageal temperature (Tes) threshold for increasing SR and the slope of SR at a given increase in Tes by the portable method (x) were in high agreement with those values obtained by the ventilation method (y) in both groups (all, r>0.88, P<0.001), we determined regression equations for all subjects after pooling data from both groups: y=1.11x-3.99 and y=1.05x+0.01 when the 95% prediction limits were ±0.12°C and ±0.43 mg·min-1·cm-2·°C-1 with minimum mean differences over the range of 36.2 to 37.2°C and 0.2 to 2.4 mg·min-1·cm-2·°C-1, respectively, using Bland-Altman analysis. Based on these findings, we consider the portable device to be reliable enough to evaluate individual sweating capacity during field tests.
Collapse
Affiliation(s)
- Koji Uchida
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,e-Health Sciences, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Yu Ogawa
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Yufuko Kataoka
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Kazumasa Manabe
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Takamichi Aida
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Yoshi-Ichiro Kamijo
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| | - Sohta Takahashi
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Ryo Ikefuchi
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Hiroshi Nose
- e-Health Sciences, Shinshu University Graduate School of Medicine, Matsumoto, Japan
| | - Shizue Masuki
- Departments of Sports Medical Science, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| |
Collapse
|
6
|
Sato C, Kamijo YI, Sakurai Y, Araki S, Sakata Y, Ishigame A, Murai K, Yoshioka I, Tajima F. Three-week exercise and protein intake immediately after exercise increases the 6-min walking distance with simultaneously improved plasma volume in patients with chronic cerebrovascular disease: a preliminary prospective study. BMC Sports Sci Med Rehabil 2022; 14:38. [PMID: 35292094 PMCID: PMC8922777 DOI: 10.1186/s13102-022-00429-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 03/02/2022] [Indexed: 05/31/2023]
Abstract
Background Blood volume (BV) is a critical factor for physical endurance in chronic stroke patients, while hypervolemia can worsen hypertension in these patients. This prospective study assessed whether rehabilitation combined with protein supplementation immediately after each exercise for 3 weeks would improve plasma volume (PV) and BV as well as physical endurance without worsening hypertension. Methods Ambulatory patients with chronic cerebrovascular disease who received a 3-week rehabilitation program with high protein jelly (intervention group [PG]; n = 8; 10-g protein) or protein-free jelly (control group [CG]; n = 8) consumed within 30 min after each exercise. PV and BV were assessed while measuring the 6-min walking distance (6MWD), peak oxygen consumption (VO2peak), strength of knee extension, and resting blood pressure before and after the intervention. Two-way ANOVA was used to determine whether there was an interaction of time × group. The difference between before and after intervention or between the groups by post-hoc test (Tukey’s test) at the level of P < 0.05. Results The 6MWD increased only in the PG (P = 0.001; an interaction of Group and Time, P = 0.037). PV and BV increased only in the PG (P < 0.05). VO2peak and strength of knee extension in the paralysed limb increased in both groups (P < 0.05). The resting blood pressure did not worsen after the intervention. Conclusions In chronic post-stroke patients, 3-week rehabilitation combined with protein intake immediately after exercise increased 6MWD simultaneously with increased PV and BV, but it did not increase resting blood pressure. The present regimen is acceptable and effective for ambulatory patients with chronic cerebrovascular disease. Name of the registry Examining effects of protein supplementation on functional improvement during rehabilitation intervention in chronic stroke patients Trial registration number UMIN000028009; date of registration: 30/06/2017. This study was registered prospectively. Supplementary Information The online version contains supplementary material available at 10.1186/s13102-022-00429-x.
Collapse
Affiliation(s)
- Chika Sato
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan.,Department of Rehabilitation Medicine, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8509, Japan
| | - Yoshi-Ichiro Kamijo
- Department of Rehabilitation Medicine, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8509, Japan. .,Institute of Sports Science and Environmental Physiology, Medical Centre for Health Promotion and Sports Science, Wakayama Medical University, 2-1 Honmachi, Wakayama, 640-8033, Japan. .,Department of Rehabilitation Medicine, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama, 343-8555, Japan.
| | - Yuta Sakurai
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan
| | - Shohei Araki
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan
| | - Yuki Sakata
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan.,Department of Rehabilitation Medicine, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8509, Japan
| | - Ayana Ishigame
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan
| | - Kota Murai
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan.,Department of Rehabilitation Medicine, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8509, Japan
| | - Izumi Yoshioka
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan
| | - Fumihiro Tajima
- Nachi-Katsuura Research Centre of Sports Medicine and Balneology, Nachi-Katsuura Balneologic Town Hospital, 1185-4 Tenma-Nachi-katuurachou, Higashimuro gun, 649-5331, Japan.,Department of Rehabilitation Medicine, School of Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8509, Japan.,Institute of Sports Science and Environmental Physiology, Medical Centre for Health Promotion and Sports Science, Wakayama Medical University, 2-1 Honmachi, Wakayama, 640-8033, Japan
| |
Collapse
|
7
|
Kumahara H, Ohta C, Nabeshima E, Nakayama A, Mine S, Yamato T. Dietary Intake and Energy Expenditure During Two Different Phases of Athletic Training in Female Collegiate Lacrosse Players. J Strength Cond Res 2020; 34:1547-1554. [PMID: 31453933 DOI: 10.1519/jsc.0000000000003335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Kumahara, H, Ohta, C, Nabeshima, E, Nakayama, A, Mine, S, and Yamato, T. Dietary intake and energy expenditure during two different phases of athletic training in female collegiate lacrosse players. J Strength Cond Res 34(6): 1547-1554, 2020-This study aims to investigate the state of nutrient intake and energy expenditure (EE) among various phases of periodization in female collegiate lacrosse players. A total of 17 Japanese female collegiate lacrosse players (age: 20.0 ± 0.9 years) were enrolled in this study. Physical activity (PA) and dietary intake were assessed over each 1-week period during the training preparatory phase (P-phase) and transition phase (T-phase). The exercise training-related EE (EEE) and EE associated with other daily living activities (i.e., nonexercise activity thermogenesis [NEAT]), were measured using accelerometers and heart rate (HR) monitoring using the flex-HR method. The total daily EE during the P-phase was significantly higher than that of the T-phase (2,168 ± 248 vs. 1744 ± 138 kcal·d; p < 0.01); however, no significant differences were observed in the total energy intake. Moreover, EEE during the P-phase was significantly higher than that of the T-phase, whereas no significant difference was found in NEAT. Furthermore, no significant differences were noted in any macronutrient intake variable observed between the 2 phases (protein:fat:carbohydrate ratio: 12.6 ± 1.5:32.9 ± 3.9:54.1 ± 5.1% in the P-phase vs. 12.1 ± 1.7:30.7 ± 3.9:55.7 ± 5.2% in the T-phase). The carbohydrate and protein intake were below recommended levels during the P-phase. Conversely, the saturated fatty acid ratio was higher than the dietary goals for disease prevention. Based on the changes in the PA volume observed during different training phases, female collegiate lacrosse players did not attain optimal nutrient intake required for optimal athletic performance and health.
Collapse
Affiliation(s)
- Hideaki Kumahara
- Department of Nutritional Sciences, Faculty of Nutritional Sciences, Nakamura Gakuen University, Fukuoka, Japan
| | | | | | | | | | | |
Collapse
|
8
|
Masuki S, Morikawa M, Nose H. Internet of Things (IoT) System and Field Sensors for Exercise Intensity Measurements. Compr Physiol 2020; 10:1207-1240. [PMID: 32941686 DOI: 10.1002/cphy.c190010] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Although exercise training according to individual peak aerobic capacity ( V ˙ o2peak ) has been recommended at all ages, sensors available in the field are limited. The most popular sensors in the field are pedometers, but they cannot be used to monitor exercise intensity. Instead, although heart rate (HR) monitors are broadly available in the field to estimate exercise intensity, HR responses to exercise vary by individual according to physical fitness and environmental conditions, which hinders the precise measurement of energy expenditure. These issues make it difficult for exercise physiologists to collaborate with geneticists, nutritionists, and clinicians using the internet of things (IoT). To conquer these problems, we have developed a device that is equipped with a triaxial accelerometer and a barometer to measure energy expenditure during interval walking training (IWT) in the field with inclines. IWT is a training regimen to repeat fast and slow walking for 3 min each, equivalent to greater than 70% and approximately 40% of individual V ˙ o2peak , respectively. Additionally, we developed an IoT system that enables users to receive instructions from trainers according to their walking records even if they live far away. Since the system is available at low cost with minimum personnel, we can investigate any factors affecting the adherence to and effects of IWT in a large population for a long period. This system was also used to verify any effects of nutritional supplements during IWT and to examine the value of applying IWT to clinical medicine. © 2020 American Physiological Society. Compr Physiol 10:1207-1240, 2020.
Collapse
Affiliation(s)
- Shizue Masuki
- Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan
| | - Mayuko Morikawa
- Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Institute for Biomedical Sciences, Shinshu University, Matsumoto, Japan.,Jukunen Taiikudaigaku Research Center, Matsumoto, Japan
| | - Hiroshi Nose
- Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto, Japan.,Jukunen Taiikudaigaku Research Center, Matsumoto, Japan
| |
Collapse
|
9
|
Camargo LDR, Doneda D, Oliveira VR. Whey protein ingestion in elderly diet and the association with physical, performance and clinical outcomes. Exp Gerontol 2020; 137:110936. [PMID: 32289487 DOI: 10.1016/j.exger.2020.110936] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/12/2020] [Accepted: 03/26/2020] [Indexed: 12/11/2022]
Abstract
Nutrition is critical to the health of the elderly, since most of them have a deficiency in key nutrient. The use of whey protein may be a food strategy to increase protein intake. The objective of this work was to evaluate the ingestion of whey protein for the elderly and the association with physical performance and clinical outcomes. A systematic review was conducted in order to find papers that shed some light in the correlation between whey protein and the elderly. INCLUSION CRITERIA population: elderly; intervention: use of whey protein when compared to control group; outcome: related to health, nutrition, or quality of life. DATABASE PubMed, with papers published in the last 5 years. SEARCH STRATEGY (elder OR senior OR elderly OR aging OR aged OR old OR older) AND (whey OR "whey protein"). 35 papers were selected of which 22 had a physical performance outcome and 13 had clinical outcomes. Studies indicate that whey protein supplements promote protein synthesis in the elderly, improving muscle performance and aerobic capacity, protecting against sarcopenia and reducing the risk for falls. In the papers studied, the age group considered to be elderly was ≥65 years in 27 papers and ≥60 years in the other 8 papers. Whey protein also appears to contribute to improved health, recovery from disease, prevention of cardiovascular and metabolic risks, and hepatic steatosis complications. Data suggest that whey protein supplements may be promising for the health improvement of the elderly.
Collapse
Affiliation(s)
- Liziane da Rosa Camargo
- Postgraduate Program in Biomedical Geronthology in the Pontifical Catholic University of Rio Grande do Sul, Brazil
| | - Divair Doneda
- Nutritionist, Medicine College, Federal University of Rio Grande do Sul
| | - Viviani Ruffo Oliveira
- Nutrition Department, Postgraduate Program in Food, Nutrition and Health, Federal University of Rio Grande do Sul, Brazil.
| |
Collapse
|
10
|
Hori S, Kamijo YI, Yuzaki M, Kawabe T, Minami K, Umemoto Y, Yokoyama M, Uenishi H, Nishimura Y, Kouda K, Mikami Y, Tajima F. Effect of coronary artery bypass grafting on blood pressure response to head-up tilting. J Physiol Sci 2020; 70:21. [PMID: 32228438 PMCID: PMC7105421 DOI: 10.1186/s12576-020-00746-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 03/11/2020] [Indexed: 12/11/2022]
Abstract
Blood pressure response to head-up tilt (HUT) in 7 healthy subjects and 9 patients before and after coronary artery bypass grafting (CABG) was measured during supine and 15-min 60° HUT. Stroke volume (SV) and ejection fraction (EF) were assessed by echocardiography. Baseline mean arterial pressure (MAP) and heart rate (HR) in patients before CABG were similar to healthy subjects. MAP in patients decreased by 6 (4-9) mmHg [median (1st-3rd quartiles)] during 7-12 mmHg of HUT with decreased cardiac output (CO = SV × HR) while HR remained unchanged. MAP in healthy subjects remained unchanged during HUT with increased HR. Body weight decreased by 3.5 (2.5-3.7) kg and MAP decreased by 6 (2-13) mmHg during the last 3-min HUT while HR increased after CABG. Decreases in SV and CO during HUT disappeared after CABG. Blood pressure decreased during HUT in patients before and after CABG regardless of HR response.
Collapse
Affiliation(s)
- Shinnosuke Hori
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Yoshi-Ichiro Kamijo
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan.
| | - Mitsuru Yuzaki
- Department of Thoracic and Cardiovascular Surgery, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Tetsuya Kawabe
- Department of Center for Educational Research and Development, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Kohei Minami
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Yasunori Umemoto
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Mao Yokoyama
- Department of Cardiovascular Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Hiroyasu Uenishi
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Yoshiharu Nishimura
- Department of Thoracic and Cardiovascular Surgery, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Ken Kouda
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Yukio Mikami
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Fumihiro Tajima
- Department of Rehabilitation Medicine, Wakayama Medical University, School of Medicine, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| |
Collapse
|
11
|
Abstract
Humans are unique in their ability to control body temperature with a large amount of skin blood flow and sweat rate while exercising in an upright position. However, cutaneous vasodilation in the body reduces total peripheral resistance and blood pooling in cutaneous veins decreases venous return to the heart and cardiac filling pressure. In addition, hypovolemia by sweating accelerates the reduction in cardiac filling pressure. These may threaten the maintenance of blood pressure if they are not compensated for. To prevent this, cutaneous vasodilation and sweat rate are suppressed by baroreflexes or hyperosmolality with dehydration. These mechanisms suppress heat dissipation, accelerate the increase in body temperature, and sometimes cause heat stroke. As a countermeasure to prevent this, we have recommended glucose electrolyte solutions but recently found that aerobic training with carbohydrate + whey protein supplementation markedly improves heat dissipation mechanisms by plasma volume expansion. In this article, we will discuss the importance of improving body fluid homeostasis for thermoregulation under heat stress in humans and the strategy to attain this.
Collapse
|
12
|
Oosthuyse T, Bosch AN, Millen AME. Effect of ingesting carbohydrate only or carbohydrate plus casein protein hydrolysate during a multiday cycling race on left ventricular function, plasma volume expansion and cardiac biomarkers. Eur J Appl Physiol 2019; 119:697-711. [PMID: 30610443 DOI: 10.1007/s00421-018-04060-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/18/2018] [Indexed: 01/17/2023]
Abstract
PURPOSE Multiday racing causes mild left ventricular (LV) dysfunction from day 1 that persists on successive days. We evaluated ingesting casein protein hydrolysate-carbohydrate (PRO) compared with carbohydrate-only (CHO) during a 3-day mountain bike race. METHODS Eighteen male cyclists were randomly assigned to ingest 6.7% carbohydrate without (CHO) or with 1.3% casein hydrolysate (PRO) during racing (~ 4-5 h/day; 68/71/71 km). Conventional LV echocardiography, plasma albumin content, plasma volume (PV) and blood biomarkers were measured before day 1 and post race on day 3. RESULTS Fourteen cyclists (n = 7 per group) completed the race. PV increased in CHO (mean increase (95% CI), 10.2% (0.1 to 20.2)%, p = 0.045) but not in PRO (0.4% (- 6.1 to 6.9)%). Early diastolic transmitral blood flow (E) was unchanged but deceleration time from peak E increased post race (CHO: 46.7 (11.8 to 81.6) ms, p = 0.019; PRO: 24.2 (- 0.5 to 48.9) ms, p = 0.054), suggesting impaired LV relaxation. Tissue Doppler mitral annular velocity was unchanged in CHO, but in PRO septal early-to-late diastolic ratio decreased (p = 0.016) and was compensated by increased lateral early (p = 0.034) and late (p = 0.012) velocities. Systolic function was preserved in both groups; with increased systolic lateral wall velocity in PRO (p = 0.002). Effect size increase in serum creatine kinase (CK) activity, CK-MB and C-reactive protein concentrations was less in PRO than CHO (Cohen's d mean ± SD, PRO: 2.91 ± 2.07; CHO: 7.56 ± 4.81, p = 0.046). CONCLUSION Ingesting casein hydrolysate with carbohydrate during a 3-day race prevented secondary hypervolemia and failed to curb impaired LV relaxation despite reducing tissue damage and inflammatory biomarkers. Without PV expansion, systolic function was preserved by lateral wall compensating for septal wall dysfunction.
Collapse
Affiliation(s)
- Tanja Oosthuyse
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Medical School, 7 York Road, Parktown, 2193, South Africa.
| | - Andrew N Bosch
- Division of Exercise Science and Sports Medicine, Department of Human Biology, University of Cape Town, Cape Town, South Africa
| | - Aletta M E Millen
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Medical School, 7 York Road, Parktown, 2193, South Africa
| |
Collapse
|
13
|
Uchida K, Kamijo YI, Ikegawa S, Hamada K, Masuki S, Nose H. Interval Walking Training and Nutritional Intake to Increase Plasma Volume in Elderly. Med Sci Sports Exerc 2018; 50:151-158. [PMID: 28863074 DOI: 10.1249/mss.0000000000001416] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Aerobic training-induced plasma volume (PV) expansion improves thermoregulation, and carbohydrate (CHO) + whey protein supplementation enhanced the effects in older people; however, these were suggested by studies on gym-based cycling training but not on home-based interval walking training (IWT). Moreover, long-term walking training effects on PV remain unknown. METHODS Seventeen male and 10 female subjects (~69 yr), having performed IWT for ≥24 months before the study, were used. After pre-intervention measurement (PRE) of PV, plasma albumin content (Albcont), fasting glucose concentration ([Glc]f), and HbA1c, the subjects were randomly divided into two groups: CHO and Pro-CHO, either consuming CHO (22.5 g) alone or CHO (15 g) + whey protein (10 g), respectively, during additional 5-month IWT from May to November, 2009. After the additional IWT, we measured the same variables again (postintervention measurement). RESULTS The baseline PV and Albcont were significantly correlated with the number of IWT days for the 12 months preceding PRE (r = 0.716, P < 0.001 and r = 0.671, P < 0.001, respectively). In postintervention, PV and Albcont marginally decreased in CHO from the baselines (P = 0.081 and P = 0.130, respectively) with increased HbA1c (P < 0.001) after correction for the baseline [Glc]f by ANCOVA, but these values remained unchanged in Pro-CHO (both, P > 0.74), with significant differences in the changes between groups (P = 0.020, P = 0.041, and P = 0.018 respectively). CONCLUSIONS PV was proportional to the number of IWT days for 12 months and a CHO + whey protein supplementation during the 5-month IWT prevented PV reduction for the period of no supplementation, which might be partially linked with blood glucose control mechanisms.
Collapse
Affiliation(s)
- Koji Uchida
- 1Department of Sports Medical Sciences, Shinshu University Graduate School of Medicine and Institute for Biomedical Sciences, JAPAN; and 2Saga Nutraceutical Research Institute, Otsuka Pharmaceutical CO., Ltd., Higashisefuri, Kanzaki, JAPAN
| | | | | | | | | | | |
Collapse
|
14
|
Masuki S, Morikawa M, Nose H. Interval Walking Training Can Increase Physical Fitness in Middle-Aged and Older People. Exerc Sport Sci Rev 2017; 45:154-162. [PMID: 28418999 DOI: 10.1249/jes.0000000000000113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
No long-term exercise training regimen with high adherence and effectiveness for middle-aged and older individuals is currently broadly available in the field. To address this problem, we developed an exercise training system comprising interval walking training and an information technology network that requires only minimal staff support. We hypothesized that our training system could increase physical fitness in older people.
Collapse
Affiliation(s)
- Shizue Masuki
- 1Department of Sports Medical Sciences, Graduate School of Medicine, 2Institute for Biomedical Sciences, Shinshu University; and 3Jukunen Taiikudaigaku Research Center, Matsumoto, Japan
| | | | | |
Collapse
|
15
|
Effects of milk product intake on thigh muscle strength and NFKB gene methylation during home-based interval walking training in older women: A randomized, controlled pilot study. PLoS One 2017; 12:e0176757. [PMID: 28520754 PMCID: PMC5435182 DOI: 10.1371/journal.pone.0176757] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 04/17/2017] [Indexed: 12/21/2022] Open
Abstract
Background Muscle atrophy with aging is closely associated with chronic systemic inflammation and lifestyle-related diseases. In the present study, we assessed whether post-exercise milk product intake during 5-month interval walking training (IWT) enhanced the increase in thigh muscle strength and ameliorated susceptibility to inflammation in older women. Methods Subjects [n = 37, 66±5 (standard deviation) yrs] who had been performing IWT for >6 months participated in this study. They were randomly divided into the following 3 groups: IWT alone (CNT, n = 12), IWT + low-dose post-exercise milk product intake (LD, n = 12; 4 g protein and 3 g carbohydrate) or IWT + a 3-times higher dose of milk product intake than the LD group (HD, n = 13). They were instructed to repeat ≥5 sets of fast and slow walking for 3 min each at ≥70% and 40% peak aerobic capacity for walking, respectively, per day for ≥4 days/week. Results After IWT, thigh muscle strength increased in the HD group (8±2%) more than in the CNT group (-2±3%, P = 0.022), despite similar IWT achievements between the groups (P>0.15). Pyrosequencing analysis using whole blood showed that methylation of NFKB1 and NFKB2, master genes of inflammation, was enhanced in the HD group (29±7% and 44±11%, respectively) more than in the CNT group (-20±6% and -10±6%, respectively; P<0.001). Moreover, the genome-wide DNA methylation analysis showed that several inflammation-related genes were hyper-methylated in the HD group compared with that in the CNT group, suggesting greater pro-inflammatory cytokine gene suppression in the HD group. Conclusion HD milk product intake after exercise produced a greater percent increase in thigh muscle strength and NFKB1 and NFKB2 gene methylation during IWT in physically active older women. Trial registration UMIN-CTR No. UMIN000024544 and No. UMIN000024912
Collapse
|