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Sendesen E, Kocabay AP, Yiğit Ö. Does sleep quality affect balance? The perspective from the somatosensory, vestibular, and visual systems. Am J Otolaryngol 2024; 45:104230. [PMID: 38422556 DOI: 10.1016/j.amjoto.2024.104230] [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: 10/08/2023] [Revised: 01/03/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
OBJECTIVE Previous studies have focused on the balance system's involvement in sleep deprivation or disorders. This study investigated how daily routine sleep quality affects the balance system of people without sleep deprivation or diagnosed sleep disorders. METHODS The study included 45 participants with a BMI score of <25. The PSQI was used to determine sleep quality. The SOT, HS-SOT, and ADT evaluated the vestibular system's functionality. RESULTS In SOT, condition 3, 4, 5, and 6 composite scores, VIS and VEST composite balance scores, and HS-SOT 5 scores were lower in the HPSQI group. At the same time, there is a statistically significant negative correlation between these scores and PSQI scores. CONCLUSION Poor sleep quality may be a factor influencing the balance system. Sleep quality affects the visual and vestibular systems rather than the somatosensory system. The population should be made aware of this issue, and clinicians should consider the potential impact of sleep quality when evaluating the balance system.
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Affiliation(s)
- Eser Sendesen
- Department of Audiology, Hacettepe University, Ankara, Turkey.
| | | | - Öznur Yiğit
- Department of Audiology, Hacettepe University, Ankara, Turkey
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Cheng S, Li W, Hui D, Ma J, Zhang T, Teng C, Dang W, Xiong K, Hu W, Cong L. Acute combined effects of concurrent physical activities on autonomic nervous activation during cognitive tasks. Front Physiol 2024; 15:1340061. [PMID: 38440348 PMCID: PMC10909997 DOI: 10.3389/fphys.2024.1340061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/31/2024] [Indexed: 03/06/2024] Open
Abstract
Backgrounds: The validity of heart rate variability (HRV) has been substantiated in mental workload assessments. However, cognitive tasks often coincide with physical exertion in practical mental work, but their synergic effects on HRV remains insufficiently established. The study aims were to investigate the combined effects of cognitive and physical load on autonomic nerve functions. Methods: Thirty-five healthy male subjects (aged 23.5 ± 3.3 years) were eligible and enrolled in the study. The subjects engaged in n-back cognitive tasks (1-back, 2-back, and 3-back) under three distinct physical conditions, involving isotonic contraction of the left upper limb with loads of 0 kg, 3 kg, and 5 kg. Electrocardiogram signals and cognitive task performance were recorded throughout the tasks, and post-task assessment of subjective experiences were conducted using the NASA-TLX scale. Results: The execution of n-back tasks resulted in enhanced perceptions of task-load feelings and increased reaction times among subjects, accompanied by a decline in the accuracy rate (p < 0.05). These effects were synchronously intensified by the imposition of physical load. Comparative analysis with a no-physical-load scenario revealed significant alterations in the HRV of the subjects during the cognitive task under moderate and high physical conditions. The main features were a decreased power of the high frequency component (p < 0.05) and an increased low frequency component (p < 0.05), signifying an elevation in sympathetic activity. This physiological response manifested similarly at both moderate and high physical levels. In addition, a discernible linear correlation was observed between HRV and task-load feelings, as well as task performance under the influence of physical load (p < 0.05). Conclusion: HRV can serve as a viable indicator for assessing mental workload in the context of physical activities, making it suitable for real-world mental work scenarios.
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Affiliation(s)
- Shan Cheng
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Wenbin Li
- Department of Aerospace Hygiene, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Duoduo Hui
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Jin Ma
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Taihui Zhang
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Chaolin Teng
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Weitao Dang
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Kaiwen Xiong
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Wendong Hu
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
| | - Lin Cong
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, Xi’an, Shaanxi, China
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Weissinger K, Bach MM, Brachman A, Stins JF, Beek PJ. Perceived cognitive fatigue has only marginal effects on static balance control in healthy young adults. Exp Brain Res 2024; 242:163-177. [PMID: 37987808 DOI: 10.1007/s00221-023-06736-0] [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: 07/09/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023]
Abstract
We examined the influence of perceived cognitive fatigue on static balance control in healthy young adults to gain greater clarity about this issue than provided in previous research. Based on the prevailing assumption in pertinent literature, we hypothesized that the influence of cognitive fatigue on balance control depends on the attentional effort required by the balance tasks being performed. To test this hypothesis, 44 young adults (24 women and 20 men) were alternately assigned to either the experimental group that was cognitively fatigued (using the 16-min TloadDback-task with individualized settings) or the control group (who watched a documentary). Before and after the intervention, the participants performed six balance tasks that differed in (attentional) control requirements, while recording the center of pressure (COP). From these time series, sway variability, mean speed, and sample entropy were calculated and analyzed statistically. Additionally, perceived cognitive fatigue was assessed using VAS scales. Statistical analyses confirmed that the balance tasks differed in control characteristics and that cognitive fatigue was elevated in the experimental group, but not in the control group. Nevertheless, no significant main effects of cognitive fatigue were found on any of the COP measures of interest, except for some non-robust interaction effects related primarily to sample entropy. These results suggest that, in young adults, postural control in static balance tasks is largely automatic and unaffected by task-induced state fatigue.
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Affiliation(s)
- Kerstin Weissinger
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Institute of Brain and Behavior Amsterdam and Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Van Der Boechorststraat 7-9, 1081 BT, Amsterdam, The Netherlands
| | - Margit Midtgaard Bach
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Institute of Brain and Behavior Amsterdam and Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Van Der Boechorststraat 7-9, 1081 BT, Amsterdam, The Netherlands
| | - Anna Brachman
- Department of Biomechanics, Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
| | - John F Stins
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Institute of Brain and Behavior Amsterdam and Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Van Der Boechorststraat 7-9, 1081 BT, Amsterdam, The Netherlands.
| | - Peter Jan Beek
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Institute of Brain and Behavior Amsterdam and Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Van Der Boechorststraat 7-9, 1081 BT, Amsterdam, The Netherlands
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Soares de Almeida Ciquinato D, Lozza de Moraes Marchiori L, Aparecida Bazoni J, Eumann Mesas A, Alexandre da Silva R. Association between Objective and Subjective Sleep Parameters with Postural Control Responses among Brazilian Schoolteachers. Sleep Sci 2023; 16:131-138. [PMID: 37425976 PMCID: PMC10325837 DOI: 10.1055/s-0043-1770800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023] Open
Abstract
Objective To investigate the impact of sleep quality on postural control in teachers. Methods Cross-sectional study with 41 schoolteachers (mean age 45.7 ± 10.4 years). Sleep quality was assessed in two ways: objectively (through actigraphy), and subjectively (through the Pittsburgh Sleep Quality Index). Postural control was assessed in an upright posture during 3 trials of 30s (bipedal and semitandem stances in rigid and foam surfaces with eyes open) with a period of rest across trials, on a force platform, based in the center of pressure measurements in the anteroposterior and mediolateral directions. Results The prevalence of poor sleep quality in this study sample was 53.7% ( n = 22). No differences were found between Poor and Good sleep in the posturographic parameters (p > 0.05). Although, there was moderate correlation between postural control in the semitandem stance and subjective sleep efficiency for center of pressure area (rs = -0.424; p = 0.006) and amplitude in anteroposterior direction (rs = -0.386; p = 0.013). Discussion There is correlation between poor sleep quality and postural control in schoolteachers, as sleep efficiency decreases, postural sway increases. Poor sleep quality and postural control were investigated in other populations, but not in teachers. Several factors such as work overload, insufficient time for physical activities, among others, can contribute to a worse perception of sleep quality, as well as deterioration in postural control. Further studies with larger populations are needed to confirm these findings.
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Affiliation(s)
- Daiane Soares de Almeida Ciquinato
- Health Science Department, Doctoral and Master's Programs in Rehabilitation Sciences at UEL/UNOPAR, Pitagoras University-UNOPAR, Londrina, Parana, Brazil
| | - Luciana Lozza de Moraes Marchiori
- Health Science Department, Doctoral and Master's Programs in Rehabilitation Sciences at UEL/UNOPAR, Pitagoras University-UNOPAR, Londrina, Parana, Brazil
- Health Department, Interdisciplinary Laboratory for Intervention in Health Promotion, Cesumar University (Unicesumar), Maringa, Parana, Brazil
| | - Jessica Aparecida Bazoni
- Health Science Department, Doctoral and Master's Programs in Rehabilitation Sciences at UEL/UNOPAR, Pitagoras University-UNOPAR, Londrina, Parana, Brazil
| | - Arthur Eumann Mesas
- Public Health Department, Postgraduated Program in Public Health, State University of Londrina (UEL), Londrina, Parana, Brazil
| | - Rubens Alexandre da Silva
- Health Science Department, Doctoral and Master's Programs in Rehabilitation Sciences at UEL/UNOPAR, Pitagoras University-UNOPAR, Londrina, Parana, Brazil
- Department of Health Sciences, Centre intersectoriel en santé durable, Laboratoire de recherche BioNR, Université du Québec à Chicoutimi (UQAC), Cupht, Saguenay, Québec, Canada
- Specialized Geriatric Services, Hôpital de La Baie, Research Centre on Health, CIUSSS du Saguenay-Lac-Saint-Jean, Chicoutimi, Quebec, Canada
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Paillard T. Detrimental effects of sleep deprivation on the regulatory mechanisms of postural balance: a comprehensive review. Front Hum Neurosci 2023; 14:1146550. [PMID: 37124366 PMCID: PMC10133494 DOI: 10.3389/fnhum.2023.1146550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
This review addresses the effects of sleep deprivation on postural balance based on a comprehensive search of articles dealing with this relationship in the electronic databases PubMed, Google Scholar, and ScienceDirect. Evidence suggests that postural balance is sensitive to acute and chronic sleep deprivation for everyone, including young and healthy subjects. Pathologies, aging and the circadian pattern aggravate and/or accentuate the effects of sleep deprivation on postural balance. It turns out that the different systems of information taking, decision making, and motor execution of the postural balance function are negatively affected by sleep deprivation. For example, regarding the information taking system, the sensitivity of visual perception and visuo-spatial performance and the oculomotricity are disrupted and the vestibulo-ocular reflex and the sensory reweighting are altered. Regarding the decision making system, the different brain areas activated for the regulation of postural balance are less active after sleep deprivation and the executive function and perception of verticality are impaired. Regarding the motor execution system, the agonist-antagonist muscle coordination can be modified. However, the different detrimental effects induced for each system of the postural balance function are not yet fully known and deserve further exploration in order to better understand them.
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Fox MG, Cohen HS, Sangi-Haghpeykar H, Takashima M. Relationship Between Obstructive Sleep Apnea and Balance on Computerized Dynamic Posturography. Cureus 2022; 14:e30973. [DOI: 10.7759/cureus.30973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
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Izadi M, Thomas E, Thomas AC, Bellafiore M. The effect of time-of-day and sleep deprivation on postural control: A systematic review. Gait Posture 2022; 97:94-103. [PMID: 35917703 DOI: 10.1016/j.gaitpost.2022.07.245] [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] [Received: 07/17/2021] [Revised: 06/24/2022] [Accepted: 07/20/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Postural control (PC) can be affected by circadian rhythm and sleep deprivation, whereby it has been reported the result of PC measurement in clinical and experimental situations can be influenced by both factors. It has been suggested sleepiness can result in deficiency in PC, which in turn can lead to occupational accidents and subsequent injuries. This is while no study critically reviews or summarizes findings surrounding this topic in the literature. RESEARCH QUESTION Is there any significant effect of sleep deprivation and circadian rhythm on PC variables among healthy individuals? METHODS PubMed, Web of Science, Scopus, and Embase were used to detect relevant studies. Only studies that examined the effect of time of day and/or sleep loss on PC among healthy individuals were included in this systematic review. RESULTS Forty-nine studies were included based on the inclusion criteria. Both circadian rhythm and sleep loss had a significant effect on PC, whereas there are inconsistent findings for optimal postural control regarding time of day. In terms of sleep deprivation, all investigations indicated that sleep loss deteriorates PC. SIGNIFICANCE The current systematic review represents a significant effect of circadian rhythm and sleep deprivation on PC, whereby it is suggested that clinicians and researchers consider these factors when measuring PC since it may affect the result of research and clinical test. Moreover, PC may be worsened through sleeplessness; however, some studies revealed there is no linear relationship between time of wakefulness and deteriorating PC due to the influence of circadian rhythm. Hence, while PC, as an objective tool, can help to detect those who are sleep deprived, which in turn can lead to prevent possible musculoskeletal injuries, further studies are needed to reveal more understanding about the effect of sleep loss and circadian rhythm on PC.
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Affiliation(s)
- Mohammad Izadi
- Sport and Exercise Research Unit, Department of Psychology, Educational Sciences and Human Movement, University of Palermo, Palermo, Italy.
| | - Ewan Thomas
- Sport and Exercise Research Unit, Department of Psychology, Educational Sciences and Human Movement, University of Palermo, Palermo, Italy
| | - Abbey C Thomas
- Department of Kinesiology, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Marianna Bellafiore
- Sport and Exercise Research Unit, Department of Psychology, Educational Sciences and Human Movement, University of Palermo, Palermo, Italy
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Investigations Concerning the Influence of Sleep Disorders on Postural Stability in Young Men. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148809. [PMID: 35886660 PMCID: PMC9322258 DOI: 10.3390/ijerph19148809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 12/10/2022]
Abstract
Lack of sleep is a factor that disrupts the receptors’ reception of information from the environment and contributes to the emergence of problems with maintaining balance. The main aim of the study was to determine whether sleep disorders affect postural stability in young men. The study participants were 76 male students who were divided into groups with good and poor sleep quality. The division was made based on the results obtained from the questionnaire of the Pittsburgh Sleep Quality Index (PSQI). In each group, postural stability had been tested using three main tests: Sensory Organization Test (SOT); Motor Control Test (MCT); and Adaptation Test (ADT). The results of the analysis show that the obtained results differ in the examined groups under the SOT test. Different values of the tested parameters were noted among people with poor sleep quality and compared with the values of those who sleep well, which translates into a difference in the ability to maintain balance. The greatest impact is observed when using visual and a vestibular system to maintain a stable posture. It was confirmed that the lack of sleep significantly disturbs postural stability.
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Umemura GS, Furtado F, dos Santos FC, Gonçalves BDSB, Forner-Cordero A. Is Balance Control Affected by Sleep Deprivation? A Systematic Review of the Impact of Sleep on the Control of Balance. Front Neurosci 2022; 16:779086. [PMID: 35651634 PMCID: PMC9150847 DOI: 10.3389/fnins.2022.779086] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 04/19/2022] [Indexed: 11/29/2022] Open
Abstract
Background Sleep is a complex physiological function that should be addressed from different perspectives and consider the circadian rhythm. Sleep deprivation, either acute or chronic, negatively affects several functions, including motor control. Balance control is essential in several daily life activities and balance problems are related to falls. Research Question This review focuses on how sleep conditions impact balance control. Methods Systematic literature review according to PRISMA guidelines. Results The literature provided strong evidence that acute sleep deprivation impairs postural control. Chronic sleep deprivation as well as low sleep quality had similar effects, although there is a lower number of works addressing this issue. Furthermore, time awake worsens postural controls and it can be used to detect sleepiness and fatigue. The sleep deprivation showed a stronger negative effect on postural control when removing the visual information (eyes closed) than when reducing proprioceptive feedback (soft surface). There is scarce literature about the effects of chronotype, circadian patterns and chronic sleep deprivation, a frequent problem, on balance control; however they consistently indicate that there is an relationship between them. Most of the studies only consider one-night (acute) sleep deprivation without monitoring prior sleep conditions and the circadian rhythm phase of the participants. However, a few studies indicated that these factors must be considered. Significance These results suggest that the sleep conditions of a subject should be considered for several days prior to balance control tests. Therefore, we propose a revision of current postural measurement protocols to include sleep assessment, such as sleep quality questionnaires or actimetry, and to consider the circadian rhythm of the participants to plan the hour of the tests.
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Affiliation(s)
- Guilherme Silva Umemura
- Biomechatronics Laboratory, Department of Mechatronics, Escola Politécnica, University of São Paulo, São Paulo, Brazil
| | - Fabianne Furtado
- Biomechatronics Laboratory, Department of Mechatronics, Escola Politécnica, University of São Paulo, São Paulo, Brazil
- Federal Institute of Education, Science and Technology of Southeast of Minas Gerais, Barbacena, Brazil
| | - Fabia Camile dos Santos
- Biomechatronics Laboratory, Department of Mechatronics, Escola Politécnica, University of São Paulo, São Paulo, Brazil
| | | | - Arturo Forner-Cordero
- Biomechatronics Laboratory, Department of Mechatronics, Escola Politécnica, University of São Paulo, São Paulo, Brazil
- *Correspondence: Arturo Forner-Cordero
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Cheng S, Yang J, Su M, Sun J, Xiong K, Ma J, Hu W. Postural Stability Change Under Sleep Deprivation and Mental Fatigue Status. Aerosp Med Hum Perform 2021; 92:627-632. [PMID: 34503615 DOI: 10.3357/amhp.5755.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractBACKGROUND: Based on posturography parameters during sleep deprivation (SD), a mental fatigue index (MFI) was constructed for healthy male cadets.METHODS: There were 37 young male subjects who volunteered for two successive days of SD. Their posturography balance, profile of mood status (POMS), and heart rate variability (HRV) were measured at four different times (10:00 and 22:00 of day 1, 10:00 and 22:00 of day 2). According to the methods used in our previous research, similar MFIs based on posturography parameters were computed. Then, correlations of MFIs with POMS scores and HRV values were evaluated by linear and nonlinear methods including quadratic, S-curve, growth, and exponential analyses.RESULTS: MFI continued to increase during SD and MFI as the independent variable had quadratic relationships with fluster (R² 0.057), depression (R² 0.067), and anger (R² 0.05) scores of POMS. A linear correlation was found between MFI and the depression score (R² 0.045) and MFI correlated linearly (R² 0.029) and nonlinearly (R² 0.03) with heart rate. Similarly, MFI reflected changes in the time and frequency domain parameters of HRV, with linear (R²range: 0.0290.082) or nonlinear (R²range: 0.0300.082) relationships.DISCUSSION: The increase of MFI was linked with amplification of personal negative moods and an imbalance of autonomic nervous system activity. The findings suggest that MFI might be a potential indicator of mental fatigue and provide a method to prevent driving fatigue and human errors.Cheng S, Yang J, Su M, Sun J, Xiong K, Ma J, Hu W. Postural stability change under sleep deprivation and mental fatigue status. Aerosp Med Hum Perform. 2021; 92(8):627632.
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Affiliation(s)
- Shan Cheng
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Jinghua Yang
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Miao Su
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Jicheng Sun
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Kaiwen Xiong
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Jin Ma
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
| | - Wendong Hu
- From the Department of Aerospace Medical Equipment, School of Aerospace Medicine, Air Force Medical University, and the Fundamentals Department, Air Force Engineering University, Xian, Peoples Republic of China
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Vargas IEP, Bicalho LE, Rodrigues ST, Barela JA. Saccadic Eye Movements Attenuate Postural Sway but Less in Sleep-Deprived Young Adults. Front Sports Act Living 2020; 2:97. [PMID: 33345087 PMCID: PMC7739768 DOI: 10.3389/fspor.2020.00097] [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: 12/26/2019] [Accepted: 06/24/2020] [Indexed: 11/13/2022] Open
Abstract
Sleep deprivation affects the performance of postural control and several other aspects related to attentional mechanisms that may alter sensory cue acquisition strategies. This study aimed to examine the possible effects of horizontal saccades and ocular fixation on a target in the performance of postural control in young adults with sleep deprivation. Twenty-six adults formed two groups, tested in two evaluations. In the first evaluation, participants slept normally on the night before. In the second evaluation, 13 participants were sleep deprived (SD) and 13 slept normally (control group [CG]) on the night before. In both evaluations, each participant stood upright as still as possible, in two experimental conditions: fixating the eye on a target and performing saccadic movement toward a target presented in two different locations (0.5 Hz). Each participant performed 3 trials in each condition, lasting 62 s each. Body oscillation was obtained in both anterior-posterior and medial-lateral directions. Results showed that SD participants swayed with a larger magnitude and higher velocity after sleep deprivation in the fixation condition. In the saccadic condition, body sway magnitude and velocity were reduced but were still larger/higher in the SD participants. Sleep deprivation deteriorates the performance of postural control. Saccadic eye movements improve postural control performance even in sleep-deprived participants but are still not sufficient to avoid postural control deterioration due to sleep deprivation.
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Affiliation(s)
- Ivan E Pinto Vargas
- Faculty of Psychomotor, Health, Education and Sports, Salesiana University of Bolivia, La Paz, Bolivia
| | - Lucas E Bicalho
- School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - José A Barela
- Institute of Biosciences, São Paulo State University, Rio Claro, Brazil
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You Snooze, You Win? An Ecological Dynamics Framework Approach to Understanding the Relationships Between Sleep and Sensorimotor Performance in Sport. Sleep Med Clin 2020; 15:31-39. [PMID: 32005348 DOI: 10.1016/j.jsmc.2019.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sleep has a widespread impact across different domains of performance, including sensorimotor function. From an ecological dynamics perspective, sensorimotor function involves the continuous and dynamic coupling between perception and action. Sport performance relies on sensorimotor function as successful movement behaviors require accurate and efficient coupling between perceptions and actions. Compromised sleep impairs different aspects of sensorimotor performance, including perceptual attunement and motor execution. Changes in sensorimotor performance can be related to specific features of sleep, notably sleep spindles and slow waves. One unaddressed area of study is the extent to which specific sleep features contribute to overall sport-specific performance.
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Watanabe H, Makabe A, Hirai C, Takeda T, Honda K, Demura S, Tsutsumi T. Frequency analyses of posturography using logarithmic translation. Acta Otolaryngol 2020; 140:1-7. [PMID: 31709868 DOI: 10.1080/00016489.2019.1682660] [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: 10/25/2022]
Abstract
Background: Power-spectral analysis of the centre of pressure (CoP) frequencies of posturography provides exponentially approximated distributions, whereas logarithmic translation enables linear approximation.Objectives: Frequency analyses were adopted for posturography of healthy subjects and patients with spinocerebellar degeneration (SCD) using logarithmic translation to determine its clinical usefulness for managing the elderly and patients with disequilibrium.Material and methods: We included 172 healthy subjects and 47 SCD patients. Posturography was performed with the eyes fixated and closed, with and without foam rubber. The power-spectral data of the CoP were obtained with the maximum entropy method. Power-spectral data were logarithmically translated for quantitative evaluation.Results: For teenagers, high-frequency fluctuations were dominant and attributable to proprioceptive compensation due to immature postural control. In elderly populations, the increased frequency in the lateral direction was characterised by three peaks indicating postural disturbances attributed to three sensory inputs. The disappearance of one peak in the anteroposterior fluctuation indicates a decrease in vestibular contribution. The foam rubber and the closed-eye condition enhanced fluctuations in two peaks. There were differences in power-spectral distributions of two peaks between the healthy subjects and SCD patients.Conclusions: Logarithmic power-spectral data distribution could provide an age- and disease-specific novel and visually-comprehensible parameter.
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Affiliation(s)
- Hiroki Watanabe
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ayane Makabe
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chiaki Hirai
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takamori Takeda
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiji Honda
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shinichi Demura
- College of Human and Social Sciences, Kanazawa University, Kanazawa, Japan
| | - Takeshi Tsutsumi
- Department of Otolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
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Assessment of the static upright balance index and brain blood oxygen levels as parameters to evaluate pilot workload. PLoS One 2019; 14:e0214277. [PMID: 30921375 PMCID: PMC6438667 DOI: 10.1371/journal.pone.0214277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 03/11/2019] [Indexed: 11/19/2022] Open
Abstract
Objective To investigate the potential for static upright balance function and brain-blood oxygen parameters to evaluate pilot workload. Methods Phase 1: The NASA Task Load Index (NASA-TLX) was used to compare the workloads of real flights with flight simulator simulated flight tasks in 15 pilots (Cohort 1). Phase 2: To determine the effects of workload, 50 cadets were divided equally into simulated flight task load (experimental) and control groups (Cohort 2). The experimental group underwent 2 h of simulated flight tasks, while the control group rested for 2 h. Their static upright balance function was evaluated using balance index-1 (BI-1), before and after the tasks, with balance system posturography equipment and cerebral blood oxygen parameters monitored with near infrared spectroscopy (NIRS) in real time. Sternberg dual-task and reaction time tests were performed in the experimental and control groups before and after the simulated flight tasks. Results (Phase1) There was a significant correlation between the workload caused by real flight and simulated flight tasks (P<0.01), indicating that NASA-TLX scales were also a tool for measuring workloads of the stimulated flight tasks. (Phase 2) For the simulated flight task experiments, the NASA-TLX total scores were significantly different between the two groups (P<0.001) and (pre-to-post) changes of the BI-1 index were greater in the experimental group than in controls (P<0.001). The cerebral blood oxygen saturation levels (rsO2) (P<0.01) and ΔHb reductions (P<0.05) were significantly higher in the experimental, compared to the control group, during the simulated flight task. In contrast to the control group the error rates (P = 0.002) and accuracy (P<0.001) changed significantly in the experimental group after the simulated flight tasks. Conclusions The simulated flight task model could simulate the real flight task load and static balance and NIRS were useful for evaluating pilots’ workload/fatigue.
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Sharma A, Muresanu DF, Ozkizilcik A, Tian ZR, Lafuente JV, Manzhulo I, Mössler H, Sharma HS. Sleep deprivation exacerbates concussive head injury induced brain pathology: Neuroprotective effects of nanowired delivery of cerebrolysin with α-melanocyte-stimulating hormone. PROGRESS IN BRAIN RESEARCH 2019; 245:1-55. [DOI: 10.1016/bs.pbr.2019.03.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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