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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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Waer FB, Sahli S, Alexe CI, Man MC, Alexe DI, Burchel LO. The Effects of Listening to Music on Postural Balance in Middle-Aged Women. SENSORS (BASEL, SWITZERLAND) 2023; 24:202. [PMID: 38203063 PMCID: PMC10781301 DOI: 10.3390/s24010202] [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: 07/31/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024]
Abstract
Listening to music has been found to influence postural balance in both healthy participants and certain patients, whereas no study investigates such effects among healthy middle-aged women. Thus, this study aimed to investigate the effect of music on postural balance in middle-aged women. Twenty-six healthy women aged between 50 and 55 years participated in this study. A stabilometric platform was used to assess their postural balance by recording the mean center of pressure velocity (VmCOP) in the eyes-opened (OE) and -closed (EC) conditions on both firm and foam surfaces. Our results showed that listening to an excerpt of Mozart's Jupiter significantly decreased the VmCOP values in two sensory conditions (firm surface/EO: (p < 0.01; 95% CI: 0.27 to 2.22); foam surface/EC: (p < 0.001; 95% CI: 0.48 to 2.44)), but not in the other two conditions (firm surface/EC and foam surface/EO). We concluded that listening to Mozart's symphony improved postural performance in middle-aged women, even in challenged postural conditions. These enhancements could offer great potential for everyday functioning.
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Affiliation(s)
- Fatma Ben Waer
- Research Laboratory Education, Motricity, Sport and Health, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia; (F.B.W.); (S.S.)
| | - Sonia Sahli
- Research Laboratory Education, Motricity, Sport and Health, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia; (F.B.W.); (S.S.)
| | - Cristina Ioana Alexe
- Department of Physical Education and Sports Performance, Faculty of Movement, Sports and Health Sciences, “Vasile Alecsandri” University of Bacau, 600115 Bacau, Romania
| | - Maria Cristina Man
- Department of Physical Education, 1 Decembrie 1918 University of Alba Iulia, 510009 Alba Iulia, Romania
| | - Dan Iulian Alexe
- Department of Physical and Occupational Therapy, Faculty of Movement, Sports and Health Sciences, “Vasile Alecsandri” University of Bacău, 600115 Bacau, Romania;
| | - Lucian Ovidiu Burchel
- Department of Environmental Sciences, Physics, Physical Education and Sports, Faculty of Sciences, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania;
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Alissa N, Rehan R, Al-Sharman A, Latrous M, Aburub AS, El-Salem K, Morris L, Khalil H. Cognitive status and sleep quality can explain the fear of falling and fall history in people with Parkinson's disease. Int J Rehabil Res 2023; 46:338-343. [PMID: 37581294 DOI: 10.1097/mrr.0000000000000596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Fear of falling (FOF) is highly prevalent in people with Parkinson's disease (PwPD) and contributes to high fall risk. Studies reporting on the relationship between falls, FOF, and non-motor factors such as cognitive function and sleep quality in Parkinson's disease are limited. This study aimed to investigate (1) the relationship of cognitive function and sleep quality with FOF, and history of falls in PwPD; (2) differences in cognitive function and sleep quality between Parkinson's disease fallers and non-fallers; and (3) a cut-off score for cognitive function and sleep quality to discriminate Parkinson's disease fallers from non-fallers. Fifty PwPD were assessed for FOF [Falls Efficacy Scale-International (FES-I)], cognition [Montréal Cognitive Assessment (MOCA)], sleep quality [Pittsburgh Sleep Quality Index (PSQI)], and falls history. The MOCA is significantly associated with FES-I scores ( R2 = 0.429, P < 0.0001). Both MOCA ( P = 0.012) and PSQI ( P = 0.027) were associated with falls history even after adjusting for confounding factors (age, sex, L-dopa use, Parkinson's disease severity). Both MOCA and PSQI scores were able to distinguish fallers from non-fallers with cut-off scores of 15.5 and 7.5, respectively. Although our findings revealed that both cognitive function and sleep quality are important factors influencing falls and FOF in PwPD, it remains to be determined if addressing cognitive impairments and poor sleep quality may favorably impact balance before integrating such screenings into fall prevention programs.
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Affiliation(s)
- Nesreen Alissa
- Department of Physical Therapy and Rehabilitation Science, School of Medicine, University of Maryland, Baltimore, Baltimore, Maryland, USA
| | - Reem Rehan
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
| | - Alham Al-Sharman
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
- Department of Physical Therapy, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Mariem Latrous
- Department of Physical Therapy and Rehabilitation Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Ala' S Aburub
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
- Department of Physiotherapy, Israa University, Amman
| | - Khalid El-Salem
- Department of Neurosciences, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Linzette Morris
- Department of Physical Therapy and Rehabilitation Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Hanan Khalil
- Department of Physical Therapy and Rehabilitation Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
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Stemplewski R, Ciążyńska J, Cyma-Wejchenig M, Maciaszek J. The effect of sleep deprivation on postural stability among physically active young adults. Sci Rep 2023; 13:17477. [PMID: 37838825 PMCID: PMC10576790 DOI: 10.1038/s41598-023-44790-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 10/12/2023] [Indexed: 10/16/2023] Open
Abstract
The study aimed to evaluate the effect of sleep deprivation on postural stability among physically active young adults. The study involved 22 physical education students. Average velocities and spatial distribution of the center of pressure displacements were taken as indicators of postural stability (double and one-leg standing). Two-way ANOVA with two factors of repeated measurements-"session" (control-experimental) and "daytime" (evening-morning)-was used. For indicators of the spatial distribution of the center of pressure in double stance with eyes open and eyes closed, and for average velocities for measurements with eyes closed, statistically significant interaction effects were found (at least p < 0.01, ƞ2 > 0.36, power statistics > 0.90) with the general tendency of higher results in the morning in the session with sleep deprivation than in the control session. In one-leg standing, an increase of average velocities was observed in the control session, and no differences in the session with sleep deprivation (interaction effect: at least p < 0.01, ƞ2 > 0.37, power statistics > 0.90). Besides spatial distribution indicators in double stance, there were no statistical differences between evening-morning tests in the session with sleep deprivation. Despite significant interaction effects, only the results of spatial distribution indicators in double stance were higher in the morning than in the evening in the session with sleep deprivation. So, no clear decline in postural stability after sleep deprivation was observed. This may suggest that sleep deprivation prevents natural regeneration rather than significantly worsening postural stability among physically active adults. It's possible that systematic physical activity might be one of the factors decreasing the risk of accidents among people exposed to sleep deprivation.
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Affiliation(s)
- Rafał Stemplewski
- Department of Digital Technologies in Physical Activity, Poznań University of Physical Education, Poznań, Poland.
| | - Julia Ciążyńska
- Department of Physical Activity and Health Promotion Science, Poznań University of Physical Education, Poznań, Poland
| | - Magdalena Cyma-Wejchenig
- Department of Digital Technologies in Physical Activity, Poznań University of Physical Education, Poznań, Poland
| | - Janusz Maciaszek
- Department of Physical Activity and Health Promotion Science, Poznań University of Physical Education, Poznań, Poland
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Lahiani M, Ben Waer F, Bouchaala F, Laatar R, Rebai H, Sahli S. Time-of-Day Effect on Postural Balance and Its Associations with Menopausal Symptoms in Postmenopausal Women. Percept Mot Skills 2023; 130:5-26. [PMID: 36240107 DOI: 10.1177/00315125221133599] [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: 11/16/2022]
Abstract
Postmenopausal women suffer from postural balance issues. During a 24-hour time span, postural performance undergoes radical changes as influenced by the circadian rhythm. In this study, we aimed to investigate time-of-day effects on postural balance in postmenopausal women and balance relationships with menopausal symptoms. Two groups of women, aged 40-50 years, participated in this study: a menopausal group and a control group. We evaluated their postural balance and menopausal symptoms (mood, sleepiness and fatigue) in five sessions over the course of a day: at 06:00 hours, at 10:00, at 14:00, at 18:00 and at 22:00. The results showed that postural balance (center of pressure area (CoParea)) values of postmenopausal women were significantly worse (p < .05) at 22:00. Moreover, at this time-of-day, participants in the menopausal group were more tired, less vigilant and experienced a lower mood. We found negative correlations between postural balance and both mood and fatigue levels. However, there was no time-of-day effect on postural balance, mood, fatigue, and sleepiness among participants in the control group. Thus, time-of-day should be considered a factor to control when assessing postural balance and designing intervention studies for postmenopausal women; and it is important for these women to be cautious of fall risks at night, as they are then less stable than at other times-of-day.
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Maatoug H, Baccouch R, Borji R, Rebai H, Sahli S. Effects of Music Listening on Postural Balance in Adolescents with Visual Impairment. Percept Mot Skills 2023; 130:112-126. [PMID: 36191088 DOI: 10.1177/00315125221130548] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We aimed to investigate the effect of music on visually impaired adolescents' postural balance across different somatosensory and vestibular input conditions. We recruited 19 adolescent participants (9 males, 10 females) with severe congenital visual impairment. We recorded their mean center of pressure velocity (CoPVm) during static upright bipedal standing under somatosensory (firm and foam surfaces) and vestibular (head facing forward (HFF), head rotated 90° to the right (HRR), and head rotated 90° to the left (HRL)) perturbations in three auditory conditions (no-music, listening to Jupiter, and listening to their preferred music). We found that CoPVm decreased significantly when listening to both Jupiter and preferred music, compared to the no-music condition on both firm (p < .05) and foam (p < .001) surfaces and with the HFF (p < .05), rotated to the right (p < .001) or rotated to the left (p < .001). Moreover, CoPVm values increased significantly with somatosensory manipulation (p < .001) in all the auditory conditions and with vestibular manipulation (p < .01) only in the no-music condition. We concluded that listening to both Jupiter and preferred music improved postural balance in visually impaired adolescents, even in challenged postural conditions.
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Affiliation(s)
- Hana Maatoug
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Rym Baccouch
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Rihab Borji
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Haithem Rebai
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Sonia Sahli
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
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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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Jallouli S, Ben Dhia I, Sakka S, Mhiri C, Yahia A, Elleuch MH, Hammouda O, Ghroubi S. Combined effect of gender differences and fatiguing task on postural balance, functional mobility and fall risk in adults with multiple sclerosis: A preliminary study. Neurol Res 2022; 44:1074-1085. [PMID: 36074940 DOI: 10.1080/01616412.2022.2112370] [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: 12/13/2022]
Abstract
AIM To investigate the gender difference effect on postural balance, functional mobility, and fall risk after performing a fatiguing task in adults with multiple sclerosis (MS). METHODS Eleven women (30.91 ± 8.19 years) and seven men (30.29 ± 7.99 years) with relapsing-remitting MS performed a fatiguing task: three sets of the Five-repetition Sit-To-Stand Test (5-STST) were performed before and after the six-minute WalkTest (6MWT). Bipedal postural balance in eyes open and eyes closed conditions were assessed prefatigue (T0) and postfatigue (T3) using a force platform. Unipedal balance, functional mobility (Timed Up and Go Test), fall risk (Four Square Step Test) and fatigue [Visual Analogue Scale of Fatigue (VASF)] were assessed at T0 and T3. Heart rate (HR) and Rating of Perceived Exertion (RPE) were recorded before (only for HR), during and after the fatiguing task. RESULTS Compared to women, men showed an impairment of posturographic parameters [mean center of pressure (CoP) velocity (CoPVm) in both conditions (p < 0.05); CoP sway area (CoPAr) in both conditions (p < 0.01)], unipedal balance on the dominant leg (p <0.001), mobility (p<0.001) and an increased fall risk (p < 0.05). No gender differences were observed in 6MWT, 5-STST, HR, RPE, and VASF. CONCLUSION This preliminary study showed that fatiguing task negatively affected postural control, mobility and fall risk only in men. These gender differences were inconclusive but could be taken into account in postural balance rehabilitation programs for MS persons.
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Affiliation(s)
- Sonda Jallouli
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia.,Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Imen Ben Dhia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia.,Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Salma Sakka
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Chokri Mhiri
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Abdelmoneem Yahia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Mohamed Habib Elleuch
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Omar Hammouda
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France.,Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Sameh Ghroubi
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
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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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Tanwar T, Veqar Z. Association Between Sleep Parameters and Postural Control: A Literature Review. SLEEP MEDICINE RESEARCH 2022. [DOI: 10.17241/smr.2022.01235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background and Objective The purpose of the review was to explore the association between sleep parameters and postural control.Methods The PubMed, Science Direct, and EBSCO were searched using the keywords ‘sleep’ including either sleep quality, sleep deprivation, poor sleep quality; and ‘postural control’ including either dynamic balance, static balance, postural balance, and balance control. Related studies published till December 2017 were selected.Results Acute sleep deprivation resulted in an impairment in postural control. Chronic sleep deprivation and postural control were also found to be related in a similar way to that of total sleep deprivation, thus affecting postural control negatively. Time of day was found to influence the postural control such that the postural control was better in the morning than in the latter part of the day. A study of the impact of aging on the effects of sleep deprivation on postural control revealed that loss of sleep had a more disturbing effect on postural control in the olderadult group than in younger participants, thus indicating a high risk of fall among the elderly.Conclusions Despite various limitations and methodological differences, this review has identified a negative influence on postural control due to impaired sleep in a wide range of populations, indicating the need for a more focused approach to sleep when assessing and measuring postural control.
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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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Does Time of Day influence postural control and gait? A review of the literature. Gait Posture 2022; 92:153-166. [PMID: 34836768 DOI: 10.1016/j.gaitpost.2021.10.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 09/13/2021] [Accepted: 10/17/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Like many physiologic processes, Time of Day may influence postural control and gait. A better understanding of diurnal variations in postural control and gait may help to improve diagnoses, reduce falls, and optimize rehabilitation and training routines. This review summarizes the current literature that addresses these questions. RESEARCH QUESTION Does time of day affect postural control and gait? METHODS We searched PubMed, Google Scholar, and IEEE using a combination of keyword and MeSH terms. We included papers that studied human subjects and assessed gait or postural control as a function of time of day. We evaluated the quality of the identified papers based on nine assessment criteria and analyzed them considering the topic (postural control or gait), age, and characteristics of the conducted assessments. We then quantitatively synthesized the results across studies using a meta-analytical approach (i.e., Hedges' g model). RESULTS Twenty-two papers considered the relationship between time of day and postural control, and eleven considered the relationship between time of day and gait. Six studies found that postural control was best in the morning, four described postural control being best in the afternoon, four described optimal postural control in the evening, and eight reported no time of day effect. Two studies found gait best in the morning, five described gait best in the afternoon, two described optimal gait in the evening, and two reported no time of day effect. The results of the quantitative analysis suggest that both postural control and gait were best in the evening. SIGNIFICANCE While there is no clear consensus on whether there is a time of day effect for postural control and gait, the findings of this review provide initial evidence suggesting that a small but statistically significant effect exists in favor of the evening. Standardized testing, including repeated and continuous evaluations, may help provide more definitive information on time of day influences on postural control and gait.
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Postural Control and Sleep Quality in Cognitive Dual Tasking in Healthy Young Adults. J 2021. [DOI: 10.3390/j4030021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Although sleep quality disorders can have a negative effect on postural control, studies about this subject are scarce. The aim of this study is to assess the differences in standing posture performance during dual tasking between healthy young adults with a good and poor sleep quality. Thirty-five healthy participants (23.09 ± 3.97 years) performed a postural task (standing posture single task ((ST)) and a dual task (DT): quiet standing while performing a concurrent cognitive task, while the total excursion of the center of pressure (TOTEX CoP), the displacement anterior–posterior (CoP-AP) and medial–lateral (CoP-ML), the mean total velocity displacement of CoP (MVELO CoP) and ellipse sway area (CEA) were measured with a force plate. After assessing the sleep quality with the Pittsburgh Sleep Quality Index, they were divided into two groups (good ((n = 21)) and poor ((n = 14)) sleep quality) to establish comparisons. This study revealed no significant differences in TOTEX CoP, CoP-ML, CoP-AP, MVELO CoP, and CEA among both sleep quality groups. In conclusion, differences in the sleep quality (good or poor sleep quality) among young adults appear not to be a relevant factor in the CoP variation, but the DT versus ST can compromise postural control performance independently of the sleep quality.
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Differences in the Effect of Sleep Deprivation on the Postural Stability among Men and Women. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18073796. [PMID: 33916500 PMCID: PMC8038654 DOI: 10.3390/ijerph18073796] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/31/2021] [Accepted: 04/02/2021] [Indexed: 01/11/2023]
Abstract
Objective: Sleepiness caused by sleep deprivation may increase the risk of injuries and damages during physical activity. Individual data so far indicate a generally better static postural stability of women regardless of sleeping conditions. The main aim of this study was to assess the impact of sleep deprivation on postural stability according to gender after 24 h of sleep deprivation. Methods: Participants included 83 students (36 men and 47 women). Postural stability was measured with eyes open and closed eyes before and after sleep deprivation. Data from posturographic platform were used to assess postural stability objectively. Results: The type of test determined the size of observed changes in postural stability. The data suggest that women are better able to cope with the effects of sleep deprivation than men. Conclusion: Postural control system is very important in sport and in physically active people. The results show that men are more sensitive to sleep deprivation than women because they had higher COP (center of pressure) values in tests. Less postural stability of the body due to sleep deprivation indicates a higher risk of injury during physical activity.
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Postural stability and fall risk in patients with obstructive sleep apnea: a cross-sectional study. Sleep Breath 2021; 25:1961-1967. [PMID: 33608798 DOI: 10.1007/s11325-021-02322-2] [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: 08/28/2020] [Revised: 01/05/2021] [Accepted: 02/10/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE Nocturnal hypoxia and daytime sleepiness resulting from fragmented sleep may impair the ability of postural stability in subjects with OSA. This study investigates the effect of disease severity on postural stability and whether or not it poses a fall risk in individuals with obstructive sleep apnea (OSA). METHODS Forty-nine patients with OSA diagnosed by all-night polysomnography (apnea-hypopnea index (AHI) ≥ 5) and aged 51.4 ± 7.2 years were included in the study. The patients were divided into two groups as severe OSA (AHI ≥ 30, n = 24) and non-severe OSA (5 ≤ AHI ≤ 30, n = 25). All patients were subjected to testing for postural stability (PS), limits of stability (LOST), and the stability index for fall risk (fall risk SI) with the Biodex Balance System®. Daytime sleepiness was assessed using the Epworth Sleepiness Scale (ESS). Biodex measurements and daytime sleepiness were compared between severe and non-severe OSA groups. Univariate analysis was conducted to explore if AHI, ESS score, lowest SaO2 (%), sleep stages (%), or total arousal index predict postural stability scores. RESULTS Overall and anterior-posterior PS indices were higher in the severe OSA group (p < 0.05). Dynamic PS and fall risk indices did not differ between groups. AHI and lowest SaO2 (%) were found to be an independent predictor for both overall PS (r = 0.300 and r = 0.286, respectively) and fall risk SI (r = 0.296 and r = 0.374, respectively), whereas stage N1 (%) and stage N3 (%) were an independent predictor for overall LOST score (r = -0.328 and r = 0.298, respectively) (p < 0.05). CONCLUSION Static postural stability of individuals with severe OSA is worse than those with non-severe OSA. Static postural stability worsens, and fall risk increases as AHI increases and the lowest SaO2 decreases in individuals with OSA. On the other hand, dynamic postural stability worsens as stage N1 (%) sleep increases and stage N3 (%) sleep decreases. While nocturnal hypoxia indicators such as AHI and lowest SaO2 are associated with static postural stability, sleep structure-related variables are associated with dynamic stability. Including postural stability assessments in the clinical practice for OSA may help addressing workplace accidents or tendency to fall. TRIAL REGISTRATION www.ClinicalTrials.gov registration number: NCT03589417.
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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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Batuk IT, Batuk MO, Aksoy S. Evaluation of the postural balance and visual perception in young adults with acute sleep deprivation. J Vestib Res 2020; 30:383-391. [PMID: 33285660 DOI: 10.3233/ves-200778] [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] [Indexed: 11/15/2022]
Abstract
BACKGROUND/OBJECTIVE Few studies have suggested a relationship between vestibular system and sleep deprivation. The aim of the present study is to investigate the effects of acute sleep deprivation lasting 24 hours or more on the postural balance and the visual abilities related to the vestibular system in healthy young adults. METHODS Thirty-one healthy young adults (8 males, 23 female; ages 18- 36 years) who had experienced at least 24 hours of sleep deprivation were included in the study. Subjects made two visits to the test laboratory. One visit was scheduled during a sleep deprivation (SD) condition, and the other was scheduled during a daily life (DL) condition. Five tests- the Sensory Organization Test (SOT), Static Visual Acuity Test (SVA), Minimum Perception Time Test (mPT), Dynamic Visual Acuity Test (DVA), and Gaze Stabilization Test (GST)- were performed using a Computerized Dynamic Posturography System. RESULTS A statistically significant difference was found between SD and DL measurements in somatosensorial (p = 0.003), visual (p = 0.037), vestibular (p = 0.008) ratios, and composite scores (p = 0.001) in SOT. The mPT results showed a statistically significant difference between SD and DL conditions (p = 0.001). No significant difference was found between SD and DL conditions in the comparison of the mean SVA (p = 0.466), DVA (p = 0.192), and GST head velocity values (p = 0.160). CONCLUSIONS Sleep deprivation has a considerable impact on the vestibular system and visual perception time in young adults. Increased risk of accidents and performance loss after SD were thought to be due to the postural control and visual processing parameters rather than dynamic visual parameters of the vestibular system.
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Affiliation(s)
| | | | - Songul Aksoy
- Department of Audiology, Hacettepe University, Ankara, Turkey
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18
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Sant'Anna do Carmo Aprigio P, Ramathur Telles de Jesus I, Porto C, Lemos T, de Sá Ferreira A. Lower limb muscle fatigability is not associated with changes in movement strategies for balance control in the upright stance. Hum Mov Sci 2020; 70:102588. [PMID: 32217206 DOI: 10.1016/j.humov.2020.102588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 01/18/2020] [Accepted: 01/30/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND Fatigue is a distressing symptom inversely related to postural stability in adults with neuromuscular and systemic diseases. However, there is no information about the effects of lower limb muscles fatigability on the movement strategies for balance control in the upright standing. METHODS This study enrolled 41 healthy subjects (female/male: 22/19; age 23 ± 3 years; body mass index 25.4 ± 3.7 kg/m2). Participants underwent posturography and surface electromyography of the gastrocnemius medialis muscle during a sustained, fatiguing voluntary contraction of the gastrocnemius preceded and followed by quiet standing (120 s). Amplitude of electromyograms and fatigability were evaluated using the root mean square (RMS) value and both the RMS and spectral median frequency (fmed) slopes. Balance control was evaluated using the center-of-pressure elliptic area (Area) and average velocity (Vavg). Movement strategies for balance control were evaluated using the number of high-density regions (nHDR) and spatial patterns of the three-dimensional statokinesigram. RESULTS Mean time to muscle fatigability was 258 ± 190 s. Area and Vavg but not nHDR increased after the fatiguing task. Single-centered spatial patterns were predominant in both tasks (pre-fatigue: n = 22/41; post-fatigue: n = 19/41), with no evidence of an association between the spatial patterns and tasks (γ = 0.237, 95%CI = [-0.338; 0.542]). CONCLUSIONS Lower limb muscle fatigability increases postural instability, but it is not associated with changes in movement strategies for balance control in the upright stance.
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Affiliation(s)
- Patricia Sant'Anna do Carmo Aprigio
- Postgraduate Program of Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, RJ, Brazil; Laboratório de Pesquisa em Ciências do Exercício (LABOCE), Centro de Educação Física Almirante Adalberto Nunes (CEFAN), Rio de Janeiro, Brazil
| | - Igor Ramathur Telles de Jesus
- Postgraduate Program of Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, RJ, Brazil
| | - Carla Porto
- Postgraduate Program of Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, RJ, Brazil
| | - Thiago Lemos
- Postgraduate Program of Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, RJ, Brazil
| | - Arthur de Sá Ferreira
- Postgraduate Program of Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, RJ, Brazil.
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Guex K, Serain E, Gremion G, Besson C, Faiss R, Majo J, Degache F. Participating In The Race Across AMerica In A Team Of Eight Cyclists: Do Not Neglect Crew Preparation. Open Access J Sports Med 2019; 10:161-169. [PMID: 31807092 PMCID: PMC6839592 DOI: 10.2147/oajsm.s219124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 09/28/2019] [Indexed: 12/20/2022] Open
Abstract
Background The Race Across AMerica (RAAM) is considered as one of the longest, and most difficult cycling races in the world. It can be performed in solo or in relay of two, four or eight persons. Purpose/method The aim of the present study was to investigate several physiological, perceptual and psychological responses before, during and after RAAM in a team of eight amateur cyclists. Because logistics of all team is demanding and complex, crew members have followed the same testing procedure. Results The main result is that parameters were globally not altered to a greater extent in cyclists than in crew members over the course of the RAAM, and that all variables returned to pre-race levels 1 week after the end of the race in both groups. In crew, body fat was decreased (p < 0.05) at mid-race (Mid) vs 1 week before the RAAM (Pre) (−1.5%) and total body water was increased (p < 0.05) at Mid vs Pre (+2.5%). In pre-relay quadriceps strength in cyclists was significantly lower (p < 0.05) at Mid vs Pre (41.6 ± 9.1 vs 45.0 ± 11.2 N, d = 0.36). Therefore, performing the race with eight well-prepared amateur cyclists seems to decrease potential risks on health. In crew, quadriceps strength remained stable at each assessment time but general fatigue increased all along the race. Anger was increased (p < 0.05) at Mid vs Pre in crew. Conclusion The most important message of this study is that crew members for a team of eight require adequate and sufficient preparation and training. Roles and responsibilities need to be thoroughly defined; individuals need to know each other beforehand and they must be prepared for sleep deprivation. The results of this study show the importance of the preparation of two teams: crew members, as well as cyclists.
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Affiliation(s)
- Kenny Guex
- School of Health Sciences (HESAV), University of Applied Sciences and Arts Western Switzerland (HES-SO), Lausanne, Switzerland
| | - Emilie Serain
- School of Health Sciences (HESAV), University of Applied Sciences and Arts Western Switzerland (HES-SO), Lausanne, Switzerland
| | - Gerald Gremion
- Department of Sports Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Cyril Besson
- Department of Sports Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Raphael Faiss
- Institute of Sports Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Jocelyne Majo
- School of Management and Engineering Vaud (HEIG-VD), University of Applied Sciences and Arts Western Switzerland (HES-SO), Delémont, Switzerland
| | - Francis Degache
- School of Health Sciences (HESAV), University of Applied Sciences and Arts Western Switzerland (HES-SO), Lausanne, Switzerland.,Institute of Sports Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland.,Therapeutic and Performance Sports Institute, MotionLab, Lausanne, Switzerland
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Nèji Z, Attia A, Sammoud S, Negra Y, Bouguezzi R, Kerdaoui Z, Farhat N, Hachana Y. Time of day effect in postural control in young soccer players: Field dynamic assessment. BIOL RHYTHM RES 2019. [DOI: 10.1080/09291016.2019.1658166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Zièd Nèji
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | - Ahmed Attia
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | - Senda Sammoud
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | - Yassine Negra
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | - Raja Bouguezzi
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | - Zied Kerdaoui
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
| | | | - Younes Hachana
- Research Unit (UR17JS01) «Sport Performance, Health & Society», Higher Institute of Sport and Physical Education of Ksar Saîd, University of “La Manouba”, Tunisia
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21
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Korchi K, Noé F, Bru N, Monce M, Cabianca-Martin O, Paillard T. Influence of plantar cutaneous sensitivity on daily fluctuations of postural control and gait in institutionalized older adults: a hierarchical cluster analysis. Chronobiol Int 2019; 36:870-882. [DOI: 10.1080/07420528.2019.1594869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Karim Korchi
- Laboratoire Mouvement, Equilibre, Performance et Santé, Université de Pau et des Pays de l’Adour, Tarbes, France
| | - Frédéric Noé
- Laboratoire Mouvement, Equilibre, Performance et Santé, Université de Pau et des Pays de l’Adour, Tarbes, France
| | - Noëlle Bru
- Laboratoire de Mathématiques et de leurs Applications, Université de Pau et des Pays de l’Adour, Pau, France
| | - Mickaël Monce
- Laboratoire Mouvement, Equilibre, Performance et Santé, Université de Pau et des Pays de l’Adour, Tarbes, France
| | - Olivier Cabianca-Martin
- Laboratoire Mouvement, Equilibre, Performance et Santé, Université de Pau et des Pays de l’Adour, Tarbes, France
| | - Thierry Paillard
- Laboratoire Mouvement, Equilibre, Performance et Santé, Université de Pau et des Pays de l’Adour, Tarbes, France
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Rym B, Hamdi C, Haithem R, Sonia S. Diurnal variations of postural stability and attentional capacities in 5–6-year-old tennis players. Chronobiol Int 2019; 36:517-529. [DOI: 10.1080/07420528.2018.1564321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Baccouch Rym
- Research Unit: Education, Motricity, Sports and Health, (EM2S, UR15JS01), High Institute of Sport and Physical Education, Sfax, Sfax University, Sfax, Tunisia
- Faculty of Sciences of Bizerte, University of Carthage, Bizerte, Tunisia
| | - Chtourou Hamdi
- Institut Supérieur du Sport et de l’éducation physique de Sfax, Sfax, Université de Sfax, Tunisie
- Activité Physique: Sport et Santé, Observatoire National du Sport, Tunis, Tunisie
| | - Rebai Haithem
- Research Unit: Education, Motricity, Sports and Health, (EM2S, UR15JS01), High Institute of Sport and Physical Education, Sfax, Sfax University, Sfax, Tunisia
| | - Sahli Sonia
- Research Unit: Education, Motricity, Sports and Health, (EM2S, UR15JS01), High Institute of Sport and Physical Education, Sfax, Sfax University, Sfax, Tunisia
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23
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Montesinos L, Castaldo R, Cappuccio FP, Pecchia L. Day-to-day variations in sleep quality affect standing balance in healthy adults. Sci Rep 2018; 8:17504. [PMID: 30504839 PMCID: PMC6269497 DOI: 10.1038/s41598-018-36053-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 11/10/2018] [Indexed: 11/23/2022] Open
Abstract
Acute sleep deprivation is known to affect human balance and posture control. However, the effects of variations in sleep quality and pattern over consecutive days have received less attention. This study investigated the associations between day-to-day variations in sleep quality and standing balance in healthy subjects. Twenty volunteers (12 females and 8 males; age: 28.8 ± 5.7 years, body mass index: 23.4 ± 3.4 kg/m2, resting heart rate: 63.1 ± 8.7 bpm) with no history of sleep disorders or balance impairments participated in the study. Sleep and balance were assessed over two consecutive days. Sleep quality variations were assessed using sleep diary, actigraphy and heart rate variability (HRV) measures. Sleep was monitored at home, using an unobtrusive wearable device. Balance was assessed in a gait lab using foot centre of pressure (COP) displacement during quiet standing. Subjects with a day-to-day deterioration in sleep quantity and quality (i.e., decreased duration and increased fragmentation, increased nocturnal activity and decreased HRV) exhibited significant changes in balance (i.e., larger COP area, amplitude and standard deviation). Conversely, subjects with no significant alterations in sleep quantity and quality showed no significant changes in COP displacements. These results confirmed our hypothesis that changes in sleep quality and pattern over consecutive days may affect balance.
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Affiliation(s)
- Luis Montesinos
- School of Engineering, University of Warwick, Coventry, United Kingdom
- Escuela de Ingenieria y Ciencias, Tecnologico de Monterrey, Mexico City, Mexico
| | - Rossana Castaldo
- School of Engineering, University of Warwick, Coventry, United Kingdom
- Institute of Advanced Study, University of Warwick, Coventry, United Kingdom
| | - Francesco P Cappuccio
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
- University Hospitals Coventry & Warwickshire NHS Trust, Coventry, United Kingdom
| | - Leandro Pecchia
- School of Engineering, University of Warwick, Coventry, United Kingdom.
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Postural and vestibular changes related to CPAP treatment in moderate-to-severe OSA patients: a 12-month longitudinal study. Sleep Breath 2018; 23:665-672. [PMID: 30456739 DOI: 10.1007/s11325-018-1754-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 10/18/2018] [Accepted: 11/13/2018] [Indexed: 11/27/2022]
Abstract
PURPOSE To assess whether vestibulo-ocular reflex (VOR) gain, posturography parameters and related clinical outcomes can improve in OSA patients after 12 months of CPAP treatment, taking into consideration that a certain degree of vestibular dysfunction has been identified in these subjects. METHODS Vestibular, postural, clinical, and polygraphic parameters were assessed in 32 OSA patients before and after beneficial CPAP treatment by means of video head impulse test (vHIT), static posturography (SP), Dizziness Handicap Inventory (DHI), Epworth Sleepiness Scale (ESS), and Apnea-Hypopnea Index (AHI), respectively, and were compared by means of a "within-subject" ANOVA model and Spearman's rank correlation. RESULTS After the 12-month period of treatment, OSA patients demonstrated a significant reduction in AHI values, in both opened and closed eyes conditions of surface and length as well as in power spectra recorded in low, middle, and high frequency interval. Although a significant improvement was also recorded among DHI and ESS scores, VOR gain increase did not survive to post-hoc corrections. Finally, positive correlations between the differences between pre- and post-treatment AHI, ESS, and PS values were found. CONCLUSIONS The present work highlighted that postural instability and dizziness-related conditions due to OSA may improve after 12 months of CPAP treatment. Although VOR gain did not demonstrate significant improvement, this study might open future perspectives directed to assessing VOR gain changes after longer periods of CPAP treatment.
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Vaara JP, Oksanen H, Kyröläinen H, Virmavirta M, Koski H, Finni T. 60-Hour Sleep Deprivation Affects Submaximal but Not Maximal Physical Performance. Front Physiol 2018; 9:1437. [PMID: 30386253 PMCID: PMC6198717 DOI: 10.3389/fphys.2018.01437] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 09/21/2018] [Indexed: 11/29/2022] Open
Abstract
The effect of 60-h sleep deprivation (SD) on physical performance and motor control was studied. Twenty cadets were measured for aerobic performance (VO2) before and immediately after the SD period. Maximal strength and EMG of the knee extensor muscles were measured before and after 60 h of SD. Balance, reaction times and motor control were assessed every evening and morning during the SD period. Main effects were observed for heart rate (p = 0.002, partial eta squared: 0.669), VO2 (p = 0.004, partial eta squared: 0.621), ventilation (p = 0.016, partial eta squared: 0.049), and lactate concentration (p = 0.022, partial eta squared: 0.501), whereas RER remained unaltered (p = 0.213, partial eta squared: 0.166). Pairwise comparisons revealed decreased values at submaximal loads in heart rate, VO2, ventilation (all p < 0.05) but not in RER, whereas all of their respective maximal values remained unchanged. Moreover, pairwise comparisons revealed decreased lactate concentration at maximal performance but only at 8-min time point during submaximal workloads (p < 0.05). Pairwise comparisons of maximal strength, EMG and rate of force development revealed no change after SD. Main effects were observed for motor and postural control, as well as for reaction times (all p < 0.05), whereas pairwise comparison did not reveal a consistent pattern of change. In conclusion, motor control can mostly be maintained during 60-h SD, and maximal neuromuscular and aerobic performances are unaffected. However, submaximal cardiorespiratory responses seem to be attenuated after SD.
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Affiliation(s)
- Jani P Vaara
- Department of Leadership and Military Pedagogy, National Defence University, Helsinki, Finland.,Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland
| | - Hermanni Oksanen
- Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland
| | - Heikki Kyröläinen
- Department of Leadership and Military Pedagogy, National Defence University, Helsinki, Finland.,Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland
| | - Mikko Virmavirta
- Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland
| | - Harri Koski
- J7/Training Division, Finnish Defence Forces, Defence Command, Helsinki, Finland
| | - Taija Finni
- Faculty of Sport and Health Sciences, Neuromuscular Research Center, University of Jyväskylä, Jyväskylä, Finland
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Cheng S, Ma J, Sun J, Wang J, Xiao X, Wang Y, Hu W. Differences in sensory reweighting due to loss of visual and proprioceptive cues in postural stability support among sleep-deprived cadet pilots. Gait Posture 2018; 63:97-103. [PMID: 29727778 DOI: 10.1016/j.gaitpost.2018.04.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 04/10/2018] [Accepted: 04/24/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Sleep deprivation is known to diminish postural control. RESEARCH QUESTION We investigated whether sleep deprivation affects sensory reweighting for postural control due to loss of visual and proprioceptive cues. METHODS Two cohorts of cadet pilots were deprived of sleep for 40 h. Variabilty in force-platform center of pressure was analyzed based on the whole path length (WPL); circumference area (CA); mean of displacement along x and y axes and corresponding standard deviations (SDx, SDy); and frequency of body-sway intensity, all of which were recorded while the cadets stood with eyes open (NEO), eyes closed (NEC), and eyes closed on a foam platform base (FEC) A sleepiness index (SUBI) based on principal component analysis of selected Cohort 1 data (n = 37) was used to compare Cohort 2 data (n = 29) with scores for the Stanford Sleepiness Scale (SSS) and Pittsburg Sleep Quality Index (PSQI). RESULTS Balance began to deteriorate at 16 h for NEO and at 28 h for NEC and FEC (p < 0.05). At 40 h, WPL, CA, and SDy of COP for NEO indicated balance deteriorated further while WPL and SDy for NEC and WPL, CA, SDx, and SDy for FEC indicated balance incrementally improved. Frequency bias of body-sway differed between NEO, NEC, and FEC. In Cohort 2, the SUBI correlated significantly with SSS (p < 0.05), but not with PSQI. SIGNIFICANCE Effects of sleep deprivation were mitigated over time, suggesting that compensatory mechanisms influenced sensory reweighting for NEC and FEC between 28 and 40 h of sleep deprivation, but not for NEO. Frequency bias of body-sway suggested that sensory reweighting in the absence of visual cues differed from that in the absence of both visual and proprioceptive cues.
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Affiliation(s)
- Shan Cheng
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Jin Ma
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Jicheng Sun
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Jian Wang
- Bureau of Health, Air Force Logistics Command, Beijing, 100009, PR China
| | - Xiao Xiao
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Yihan Wang
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Wendong Hu
- Department of Aerospace Medical Equipment, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China.
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Martin T, Gauthier A, Ying Z, Benguigui N, Moussay S, Bulla J, Davenne D, Bessot N. Effect of sleep deprivation on diurnal variation of vertical perception and postural control. J Appl Physiol (1985) 2018. [PMID: 29543136 DOI: 10.1152/japplphysiol.00595.2017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of the study was to test the effect of total sleep deprivation on performance and time-of-day pattern of subjective visual vertical (SVV) and postural control. Nineteen healthy, young participants (4 women and 15 men 21.9 ± 1.2 yr) were engaged in two counterbalanced experimental sessions with or without total sleep deprivation. Oral temperature, Karolinska Sleepiness Scale, and visual analogic scale for fatigue, postural control, and SVV were randomly measured every 4 h, from 0600 to 2200. A linear mixed model was used to capture the effect of time of day and sleep condition as factors. A classical adjusted COSINOR function was then used to modelize this daily variation. After the control night of sleep, SVV as well as oral temperature, sleepiness, and fatigue showed significant time-of-day variation, contrasting with measures of postural control which remained stable across the day. After sleep deprivation, SVV showed no diurnal variation, but its mean deviation value increased by 29%. Postural control capability also decreased after sleep deprivation, with a higher center of pressure surface (+70.4%) and total length (+7.37%) but remained stable throughout the day. These results further confirm the negative effect of sleep loss on postural control capability. Even if a direct relationship cannot be confirmed, the disruption of SVV capacity after sleep deprivation could strongly play a role in postural control capacity changes. Sleep deprivation should be considered as a potent factor involved in balance loss and subsequent fall. NEW & NOTEWORTHY The topic of sleep deprivation and postural control is not understood, with discrepancy among results. This study described that postural control displays a stable level throughout the day and that sleep deprivation, even if it increases postural sway, does not affect this stable diurnal pattern. The modification of the perception of the vertical level after sleep deprivation could strongly play a role in the observed changes in postural control capacity.
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Affiliation(s)
- T Martin
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
| | - A Gauthier
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
| | - Z Ying
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
| | - N Benguigui
- Université de Caen Basse-Normandie, EA4260 CESAMS, Caen, France
| | - S Moussay
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
| | - J Bulla
- Department of Mathematics, University of Bergen , Bergen , Norway
| | - D Davenne
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
| | - N Bessot
- Normandie University, UNICAEN, INSERM, COMETE, Caen , France
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Khalil H, Al-Shorman A, El-Salem K, Abdo N, Alghwiri AA, Aburub A, Shalabi S, Al-Mustafa F. Fear of Falling in People With Multiple Sclerosis: Which Clinical Characteristics Are Important? Phys Ther 2017; 97:698-706. [PMID: 28444253 DOI: 10.1093/ptj/pzx044] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 04/11/2017] [Indexed: 11/13/2022]
Abstract
BACKGROUND Fear of falling (FOF) is an important risk indicator for health-related outcomes and quality of life in patients with multiple sclerosis (MS). However, factors associated with FOF in MS are not well investigated. OBJECTIVES This study was done to explore predictors of FOF in this population. METHODS Seventy relapsing remitting patients with MS were evaluated. Fear of falling was assessed using the Fall Efficacy Scale-International (FES-I). Motor outcomes included: 30-second chair stand test (30s-CST), Berg Balance Scale (BBS), 10-Meter Walk Test (10MWT), and 6-Minute Walk Test (6MWT). Cognitive status was determined using the Montréal Cognitive Assessment (MOCA) and Symbol Digit Modalities Test (SDMT). Affective factors including depression, fatigue, and sleep were also assessed using the Beck Depression Inventory (BDI), Modified Fatigue Impact Scale (MFIS), and Pittsburgh Sleep Quality Index (PSQI), respectively. RESULTS Fear of falling was significantly correlated with all motor and affective measures used. However, a stepwise regression found that only BBS from motor measures, MOCA from cognitive measures, and sleep disorders from affective factors were significantly predictive of the FOF. CONCLUSIONS Fear of falling in patients with MS is multifactorial and includes motor and nonmotor factors. Thus, therapies that aim to reduce risk of falling in this population should address motor functions, cognitive abilities, and sleep quality.
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Affiliation(s)
- Hanan Khalil
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Alham Al-Shorman
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology
| | - Khalid El-Salem
- Department of Neurosciences, Faculty of Medicine, Jordan University of Science and Technology
| | - Nour Abdo
- Department of Public Health, Faculty of Medicine, Jordan University of Science and Technology
| | - Alia A Alghwiri
- School of Rehabilitation Sciences, The University of Jordan, Amman, Jordan
| | - Aseel Aburub
- Department of Physical Therapy, Fatima College for Health Sciences, Abu Dhabi, United Arab -Emirates
| | - Sarah Shalabi
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology
| | - Firas Al-Mustafa
- Department of Neurosciences, Faculty of Medicine, Jordan University of Science and Technology
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Abstract
The authors evaluated the short-term (within-day, between-days) repeatability of center of pressure (COP) displacements. COP sway area and speed were obtained in the morning and afternoon of two separate days, both with open (EO) and closed (EC) eyes, in 10 healthy adults. Agreement and variability among conditions were tested by ANOVA and Bland-Altman plots. Mode (EO/EC, area: p = .032; speed: p < .004), and day (day1/day2, area: p = .006; speed: p = .02) showed significant differences. The EC condition and the second test day showed the largest values, with medium-large effect sizes. Time-of-day did not influence COP displacements. Speed had better agreement than area (Bland-Altman plots). COP displacements were well reproducible within-day, but had significant between-days variations. COP assessments should be performed in the same session.
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Affiliation(s)
- Nicola Lovecchio
- a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy
| | - Matteo Zago
- a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy
| | - Laura Perucca
- b Department of Biomedical Sciences for Health , Università degli Studi di Milano , Milano , Italy.,c Unità Clinica e Laboratorio di Ricerche di Riabilitazione Neuromotoria, Ospedale San Luca, Istituto Auxologico Italiano-IRCCS , Milano , Italy
| | - Chiarella Sforza
- a Functional Anatomy Research Center (FARC), Department of Biomedical Sciences for Health, Università degli Studi di Milano , Milano , Italy.,d Institute of Molecular Bioimaging and Physiology, National Research Council , Segrate , Italy
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Narciso FV, Barela JA, Aguiar SA, Carvalho ANS, Tufik S, de Mello MT. Effects of Shift Work on the Postural and Psychomotor Performance of Night Workers. PLoS One 2016; 11:e0151609. [PMID: 27115868 PMCID: PMC4845980 DOI: 10.1371/journal.pone.0151609] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 03/01/2016] [Indexed: 11/18/2022] Open
Abstract
The purpose of the study was to investigate the effects of shift work on the psychomotor and postural performance of night workers. The study included 20 polysomnography technicians working schedule of 12-h night shift by 36-h off. On the first day of protocol, the body mass and height were measured, and an actigraph was placed on the wrist of each participant. On the second day of protocol, sleepiness by Karolinska Sleepiness Scale, postural control by force platform (30 seconds) and psychomotor performance by Psychomotor Vigilance Task (10 minutes) were measured before and after 12-h night work. Results showed that after 12-h night work, sleepiness increased by 59% (p<0.001), postural control variables increased by 9% (p = 0.048), and 14% (p = 0.006). Mean reaction time, and the number of lapses of attention increased by 13% (p = 0.006) and 425% (p = 0.015), respectively, but the mean reciprocal reaction time decreased by 7%. In addition, there were correlations between sleepiness and postural control variables with opened eyes (r = 0.616, 95% confidence interval [CI] = 0.361-0.815; r = 0.538; 95% CI = 0.280-0.748) and closed eyes (r = 0.557; 95% CI = 0.304-0.764, r = 0497; 95% CI = 0.325-0.715) and a pronounced effect of sleepiness on postural sway (R2 = 0.393; 95% CI = 0.001-0.03). Therefore, 12-h night work system and sleepiness showed a negative impact in postural and psychomotor vigilance performance of night workers. As unexpected, the force platform was feasibility to detect sleepiness in this population, underscoring the possibility of using this method in the workplace to prevent occupational injuries and accidents.
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Affiliation(s)
| | | | | | | | - Sergio Tufik
- Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Marco Túlio de Mello
- Universidade Federal de São Paulo, São Paulo, SP, Brazil
- Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- * E-mail:
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31
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Degache F, Goy Y, Vat S, Haba Rubio J, Contal O, Heinzer R. Sleep-disordered breathing and daytime postural stability. Thorax 2016; 71:543-8. [PMID: 26892395 DOI: 10.1136/thoraxjnl-2015-207490] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 01/22/2016] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Postural stability depends on the coordination of the central nervous system with visual sense, proprioceptive and vestibular information. Sleep deprivation has been shown to affect this function. The objective of our study was to assess the effects of sleep-disordered breathing (SDB) on postural stability. METHODS 158 subjects referred for suspected SDB had an overnight sleep study and were placed on a posturographic platform in late afternoon. This platform allows measuring the centre of pressure (CoP) oscillations and to calculate: total displacement of CoP in X and Y axes, mean speed of CoP displacement and the length as function of surface (LFS) ratio (length of CoP displacement/surface of CoP trajectory). RESULTS 98 men and 60 women were included. Mean age±SD was 45.4±5.5 years old, body mass index (BMI) 27.5±5.6 kg/m(2) and apnoea-hypopnoea index (AHI) 13.6±16.1/h. AHI was <5/h in 64 (41%) subjects, 5-15/h in 43 (27%), 15-30/h in 30 (19%) and >30/h in 21 (13%). In patients with an AHI >5/h versus AHI <5/h, we observed an important increase in LFS (+21%, p<0.001), in XY length (+23%, p<0.001) and in mean speed (+23%, p<0.001). After controlling for age, BMI and sleepiness (Epworth) in multivariate regression models, there was a positive association between all nocturnal breathing parameters (specifically: mean SpO2, AHI, oxygen desaturation index 3% and % time with SpO2 <90%) and the main stability outcomes (all p<0.05). CONCLUSIONS SDB severity, especially the mean nocturnal SpO2 level, is associated with impaired daytime postural stability.
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Affiliation(s)
- Francis Degache
- Department of Health Research, University of Health Sciences, University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland Department of Physiology, GRISSUL (Group of Research of Institute of Sports Sciences), University of Lausanne, Lausanne, Switzerland
| | - Yannick Goy
- Department of Physiology, Faculty of Biology and Medicine, Institute of Sports Sciences, University of Lausanne, Lausanne, Switzerland
| | - Sopharat Vat
- Center for Investigation and Research in Sleep (CIRS), University Hospital of Lausanne (CHUV), Lausanne, Switzerland Pulmonary Medicine Department, University Hospital of Montreal (CHUM), Montreal, Canada
| | - José Haba Rubio
- Center for Investigation and Research in Sleep (CIRS), University Hospital of Lausanne (CHUV), Lausanne, Switzerland
| | - Olivier Contal
- Department of Health Research, University of Health Sciences, University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland
| | - Raphaël Heinzer
- Center for Investigation and Research in Sleep (CIRS), University Hospital of Lausanne (CHUV), Lausanne, Switzerland
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Effects of Lifetime Occupational Pesticide Exposure on Postural Control Among Farmworkers and Non-Farmworkers. J Occup Environ Med 2016; 58:133-9. [PMID: 26849257 DOI: 10.1097/jom.0000000000000655] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE The aim of the study was to assess potential chronic effects of pesticide exposure on postural control, by examining postural balance of farmworkers and non-farmworkers diverse self-reported lifetime exposures. METHODS Balance was assessed during quiet upright stance under four experimental conditions (2 visual × 2 cognitive difficulty). RESULTS Significant differences in baseline balance performance (eyes open without cognitive task) between occupational groups were apparent in postural sway complexity. When adding a cognitive task to the eyes open condition, the influence of lifetime exposure on complexity ratios appeared different between occupational groups. Removing visual information revealed a negative association of lifetime exposure with complexity ratios. CONCLUSIONS Farmworkers and non-farmworkers may use different postural control strategies even when controlling for the level of lifetime pesticide exposure. Long-term exposure can affect somatosensory/vestibular sensory systems and the central processing of sensory information for postural control.
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33
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Sleepiness, attention and risk of accidents in powered two-wheelers. Sleep Med Rev 2016; 25:40-51. [DOI: 10.1016/j.smrv.2015.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 11/18/2022]
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Paillard T, Noé F, Bru N, Couderc M, Debove L. The impact of time of day on the gait and balance control of Alzheimer's patients. Chronobiol Int 2016; 33:161-8. [PMID: 26785632 DOI: 10.3109/07420528.2015.1124885] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Alzheimer's patients suffer from circadian dysregulation. The aim of this study was to examine the evolution of balance control and gait at different times of the day (11:00, 14:00, 18:00) in order to identify whether Alzheimer's patients were more likely to fall at certain periods of the day. Spatio-temporal parameters of centre of foot pressure displacements were measured with a force platform and spatio-temporal parameters of walking were evaluated with a gait analysis device. The results highlighted that balance control was worse in the evening and the afternoon than in the morning. Furthermore, the walking speed was faster and support duration, swing duration and cycle duration were shorter in the evening than in the morning and afternoon. The combined analysis of balance control and gait parameters revealed that balance control and walking are concomitantly altered in the evening which increases the fall risk in the evening, in comparison with the morning, for Alzheimer's patients.
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Affiliation(s)
- Thierry Paillard
- a Département STAPS, Laboratoire Activité Physique, Performance et Santé , Université de Pau et des Pays de l'Adour , Tarbes , France
| | - Frederic Noé
- a Département STAPS, Laboratoire Activité Physique, Performance et Santé , Université de Pau et des Pays de l'Adour , Tarbes , France
| | - Noëlle Bru
- b Laboratoire de Mathématique et leurs Applications, UMR CNRS 5142 , Université de Pau et des Pays de l'Adour , Pau , France
| | - Martine Couderc
- c Centre Hospitalier de Lourdes, Service gériatrique , Lourdes , France
| | - Lola Debove
- a Département STAPS, Laboratoire Activité Physique, Performance et Santé , Université de Pau et des Pays de l'Adour , Tarbes , France.,c Centre Hospitalier de Lourdes, Service gériatrique , Lourdes , France
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35
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Völker I, Kirchner C, Bock OL, Wascher E. Body Sway as a Possible Indicator of Fatigue in Clerical Workers. Saf Health Work 2015; 6:206-10. [PMID: 26929829 PMCID: PMC4674495 DOI: 10.1016/j.shaw.2015.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 04/07/2015] [Accepted: 04/27/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Fatigue has a strong impact on workers' performance and safety, but expedient methods for assessing fatigue on the job are not yet available. Studies discuss posturography as an indicator of fatigue, but further evidence for its use in the workplace is needed. The purpose of the study is to examine whether posturography is a suitable indicator of fatigue in clerical workers. METHODS Thirty-six employees (Ø 34.8 years, standard deviation = 12.5) participated in postural tasks (eyes open, eyes closed, arm swinging, and dual task) in the morning and afternoon. Position of their center of pressure (COP) was registered using a Nintendo Wii Balance Board and commercial software. From registered COP time series, we calculated the following parameters: path length (mm), velocity (mm/s), anterior-posterior variance (mm), mediolateral variance (mm), and confidence area (mm(2)). These parameters were reduced to two orthogonal factors in a factor analysis with varimax rotation. RESULTS Statistical analysis of the first factor (path length and velocity) showed a significant effect of time of day: COP moved along a shorter path at a lower velocity in the afternoon compared with that in the morning. There also was a significant effect of task, but no significant interaction. CONCLUSION Data suggest that postural stability of clerical workers was comparable in the morning and afternoon, but COP movement was greater in the morning. Within the framework of dynamic systems theory, this could indicate that the postural system explored the state space in more detail, and thus was more ready to respond to unexpected perturbations in the morning.
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Affiliation(s)
- Ina Völker
- German Sport University Cologne—Institute of Physiology and Anatomy, Cologne, Germany
- Corresponding author. German Sport University Cologne—Institute of Physiology and Anatomy, Am Sportpark Müngersdorf 6, Cologne, Germany.
| | - Christine Kirchner
- German Sport University Cologne—Institute of Physiology and Anatomy, Cologne, Germany
| | - Otmar Leo Bock
- German Sport University Cologne—Institute of Physiology and Anatomy, Cologne, Germany
| | - Edmund Wascher
- IfADo—Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
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Baccouch R, Zarrouk N, Chtourou H, Rebai H, Sahli S. Time-of-day effects on postural control and attentional capacities in children. Physiol Behav 2015; 142:146-51. [DOI: 10.1016/j.physbeh.2015.01.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 10/05/2014] [Accepted: 01/22/2015] [Indexed: 10/24/2022]
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Aguiar SA, Barela JA. Adaptation of sensorimotor coupling in postural control is impaired by sleep deprivation. PLoS One 2015; 10:e0122340. [PMID: 25799560 PMCID: PMC4370556 DOI: 10.1371/journal.pone.0122340] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/13/2015] [Indexed: 12/03/2022] Open
Abstract
The purpose of the study was to investigate the effects of sleep deprivation (SD) in adaptation of the coupling between visual information and body sway in young adults’ postural control due to changes in optic flow characteristics. Fifteen young adults were kept awake for approximately 25 hours and formed the SD group, while fifteen adults who slept normally the night before the experiment participated as part of the control group. All participants stood as still as possible in a moving room before and after being exposed to one trial with higher amplitude and velocity of room movement. Postural performance and the coupling between visual information, provided by a moving room, and body sway were examined. Results showed that after an abrupt change in visual cues, larger amplitude, and higher velocity of the room, the influence of room motion on body sway was decreased in both groups. However, such a decrease was less pronounced in sleep deprived as compared to control subjects. Sleep deprived adults were able to adapt motor responses to the environmental change provided by the increase in room motion amplitude. Nevertheless, they were not as efficient as control subjects in doing so, which demonstrates that SD impairs the ability to adapt sensorimotor coupling while controlling posture when a perturbation occurs.
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Affiliation(s)
- Stefane A. Aguiar
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - José A. Barela
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, Brazil
- Institute of Biosciences, São Paulo State University, Rio Claro, Brazil
- * E-mail:
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Pedão ST, Aguiar SA, Cunha BP, de Freitas PB. Grip and load force control and coordination in object manipulation during a night of sleep deprivation. Sleep Biol Rhythms 2014. [DOI: 10.1111/sbr.12102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Sabrina Tiago Pedão
- Graduate Program in Human Movement Science; Institute of Physical Activity and Sport Sciences; Cruzeiro do Sul University; São Paulo Brazil
| | - Stefane Aline Aguiar
- Graduate Program in Human Movement Science; Institute of Physical Activity and Sport Sciences; Cruzeiro do Sul University; São Paulo Brazil
| | - Bianca Pinto Cunha
- Graduate Program in Human Movement Science; Institute of Physical Activity and Sport Sciences; Cruzeiro do Sul University; São Paulo Brazil
| | - Paulo Barbosa de Freitas
- Graduate Program in Human Movement Science; Institute of Physical Activity and Sport Sciences; Cruzeiro do Sul University; São Paulo Brazil
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Kwon YH, Nam KS. Circadian fluctuations in three types of sensory modules in healthy subjects. Neural Regen Res 2014; 9:436-9. [PMID: 25206832 PMCID: PMC4146188 DOI: 10.4103/1673-5374.128256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2013] [Indexed: 11/22/2022] Open
Abstract
This study was designed to observe and compare the circadian fluctuations in tactile sense, joint reposition sense and two-point discrimination in healthy subjects. Twenty-one healthy adult subjects received perceptual ability tests through these three different sensory modules at approximately 9:00, 13:00 and 18:00 in a day. The distribution of ranking for perceptual ability was significantly different among the three different time points in each individual, with highest perceptual ability in the evening compared with noon and morning, in terms of tactile sense and two-point discrimination. These findings suggest that the perceptual ability of healthy subjects fluctuates according to the time points in a day.
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Affiliation(s)
- Yong Hyun Kwon
- Department of Physical Therapy, Yeungnam University College of Science and Technology, Hyunchung-ro, Nam-gu, Daegu, Republic of Korea
| | - Ki Seok Nam
- Department of Physical Therapy, Yeungnam University College of Science and Technology, Hyunchung-ro, Nam-gu, Daegu, Republic of Korea
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Morning/Evening differences in somatosensory inputs for postural control. BIOMED RESEARCH INTERNATIONAL 2014; 2014:287436. [PMID: 25210709 PMCID: PMC4151602 DOI: 10.1155/2014/287436] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 12/26/2022]
Abstract
The underlying processes responsible for the differences between morning and afternoon measurements of postural control have not yet been clearly identified. This study was conducted to specify the role played by vestibular, visual, and somatosensory inputs in postural balance and their link with the diurnal fluctuations of body temperature and vigilance level. Nineteen healthy male subjects (mean age: 20.5 ± 1.3 years) participated in test sessions at 6:00 a.m. and 6:00 p.m. after a normal night's sleep. Temperature was measured before the subjects completed a sign cancellation test and a postural control evaluation with eyes both open and closed. Our results confirmed that postural control improved throughout the day according to the circadian rhythm of body temperature and sleepiness/vigilance. The path length as a function of surface ratio increased between 6:00 a.m. and 6:00 p.m. This is due to a decrease in the centre-of-pressure surface area, which is associated with an increase in path length. Romberg's index did not change throughout the day; however, the spectral analysis (fast Fourier transform) of the centre-of-pressure excursions (in anteroposterior and mediolateral directions) indicated that diurnal fluctuations in postural control may occur via changes in the different processes responsible for readjustment via muscle contractions.
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Aguiar SA, Barela JA. Sleep deprivation affects sensorimotor coupling in postural control of young adults. Neurosci Lett 2014; 574:47-52. [PMID: 24858135 DOI: 10.1016/j.neulet.2014.05.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 05/13/2014] [Accepted: 05/14/2014] [Indexed: 11/26/2022]
Abstract
Although impairments in postural control have been reported due to sleep deprivation, the mechanisms underlying such performance decrements still need to be uncovered. The purpose of this study was to investigate the effects of sleep deprivation on the relationship between visual information and body sway in young adults' postural control. Thirty adults who remained awake during one night and 30 adults who slept normally the night before the experiment participated in this study. The moving room paradigm was utilized, manipulating visual information through the movement of a room while the floor remained motionless. Subjects stood upright inside of a moving room during four 60-s trials. In the first trial the room was kept stationary and in the following trials the room moved with a frequency of 0.2Hz, peak velocity of 0.6cm/s and 0.9cm peak-to-peak amplitude. Body sway and room displacement were measured through infrared markers. Results showed larger and faster body sway in sleep deprived subjects with and without visual manipulation. The magnitude with which visual stimulus influenced body sway and its temporal relationship were unaltered in sleep deprived individuals, but they became less coherent and more variable as they had to maintain upright stance during trials. These results indicate that after sleep deprivation adults become less stable and accurate in relating visual information to motor action, and this effect is observed after only a brief period performing postural tasks. The low cognitive load employed in this task suggests that attentional difficulties are not the only factor leading to sensorimotor coupling impairments observed following sleep deprivation.
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Affiliation(s)
- Stefane A Aguiar
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, SP, Brazil
| | - José A Barela
- Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, São Paulo, SP, Brazil; Institute of Biosciences, São Paulo State University, Rio Claro, SP, Brazil.
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Kwon YH, Choi YW, Nam SH, Lee MH. The influence of time of day on static and dynamic postural control in normal adults. J Phys Ther Sci 2014; 26:409-12. [PMID: 24707094 PMCID: PMC3976013 DOI: 10.1589/jpts.26.409] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Accepted: 10/02/2013] [Indexed: 11/24/2022] Open
Abstract
[Purpose] We attempted to determine whether static and dynamic postural control ability
fluctuated depending on the influence of the time of day (9 am, 1 pm, and 5 pm), and at
which time point postural balance performance was best in healthy individuals. [Subjects
and Methods] Twenty-four healthy subjects participated in this study. The static and
dynamic postural balance test was conducted during three sessions (i.e., at 9 am, 1 pm,
and 5 pm) with a counterbalanced order for prevention of learning effects. As outcome
measurements, AP distance, ML distance, and velocity moment were adopted in the static
balance test, and the performance time and total distance were measured in the dynamic
balance test. [Results] For the static postural balance test, COP distance was shorter and
COP velocity was slower at 9 am compared with those at 1 and 5 pm. In particular, the COP
distance at 9 am was statistically different from that at 13 pm. During the dynamic
postural balance test, performance time and total distance were influenced by the time of
day, as the best performance was observed in the morning. [Conclusion] This study found
that static and dynamic postural balance abilities were greatest in the morning and worst
at 1 pm. Understanding of the mechanism of the time-of-day effect on postural balance will
be helpful for assessment and treatment of postural balance by physical therapists and in
making desirable clinical decisions.
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Affiliation(s)
- Yong Hyun Kwon
- Department of Physical Therapy, Yeungnam University College of Science and Technology, Republic of Korea
| | - Yong Won Choi
- Department of Physical Therapy, Yeungnam University College of Science and Technology, Republic of Korea
| | - Seok Hyun Nam
- Department of Physical Medicine and Rehabilitation, Yeungnam University Medical Center, Republic of Korea
| | - Myoung Hee Lee
- Department of Physical Therapy, College of Science, Kyungsung University, Republic of Korea
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Forsman P, Pyykkö I, Toppila E, Hæggström E. Feasibility of force platform based roadside drowsiness screening - a pilot study. ACCIDENT; ANALYSIS AND PREVENTION 2014; 62:186-190. [PMID: 24172085 DOI: 10.1016/j.aap.2013.09.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 09/05/2013] [Accepted: 09/19/2013] [Indexed: 06/02/2023]
Abstract
Previous research on driver drowsiness detection has focused on developing in-car systems that continuously monitor the driver while driving and warn him/her when drowsiness compromises safety. In occupational settings a simple test of postural control has showed sensitivity to work shift induced fatigue in drivers. Whether the test is feasible for surveillance purposes in roadside settings is unknown. The present research sought to evaluate the feasibility of using a force platform test of postural control as a breathalyzer-like drowsiness-test at the roadside. Seventy-one commercial drivers stopped by at our measurement sites and volunteered to participate in the study. We tested postural control with a computerized force platform, on which the drivers stood eyes open while it sampled body center-of-pressure excursions at 33Hz for 30s and scored postural control as the area of the 95% confidence ellipse enclosing the excursions. The drivers also completed the Karolinska Sleepiness Scale (KSS) and we recorded each driver's wake up time, time on task, and time of testing. Five of the seventy-one drivers exhibited significantly poorer postural control than their peers (P=0.03). The wake up times and times on task for these five drivers indicated that they were on a night shift schedule or had a long time on task. Furthermore, their postural control and KSS scores correlated (r=-0.88, P=0.04), whereas the scores did not correlate for their peers (r=0.10, P=0.48). These results indicate that the force platform test identified drivers, whose impairment in postural control was drowsiness-related. Specifically, the test identified the few drivers in this roadside sample whose wake- and work histories resembled a night shift schedule. In this kind of roadside setting, with a demographically heterogeneous group and interindividual differences in people's responses to drowsiness, it suggests that the method, further developed, may provide a drowsiness test for roadside surveillance.
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Affiliation(s)
- Pia Forsman
- Department of Physics, University of Helsinki, Helsinki, Finland; Finnish Institute of Occupational Health, Helsinki, Finland.
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Abstract
OBJECTIVE Proper concussion assessment is imperative for properly caring for athletes who sustain traumatic brain injuries. Decreased sleep quality and sleep quantity affect cognition and may threaten the validity of clinical measures often used as a part of the concussion assessment. The purpose of this study was to determine if sleep quality or sleep quantity affects performance on clinical measures of concussion. DESIGN Prospective cohort design. SETTING Clinical research center. PARTICIPANTS One hundred fifty-five college student-athletes (57 females, 98 males; age = 18.8 ± 0.8 years; mass = 78.4 ± 19.6 kg; height = 177.4 ± 12.3 cm). INTERVENTIONS We performed preseason baseline testing by using a well-accepted and multifaceted protocol inclusive of neurocognition, balance performance, and symptom reporting. Information related to sleep quality and sleep quantity was also collected during preseason baseline testing. MAIN OUTCOME MEASURES The CNS Vital Signs battery (computerized neurocognitive test), Sensory Organization Test (computerized dynamic posturography), and a Graded Symptom Checklist (symptom evaluation) were used. RESULTS Subjects with a low sleep quantity the night before baseline reported both a greater number of symptoms and higher total symptom severity score. No clinically significant effects for sleep quality were observed. CONCLUSIONS Sleep-deprived athletes reporting for baseline testing should be rescheduled for testing after a normal night's sleep.
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Compensation to whole body active rotation perturbation. Gait Posture 2013; 39:621-4. [PMID: 23871422 DOI: 10.1016/j.gaitpost.2013.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 06/06/2013] [Accepted: 06/20/2013] [Indexed: 02/02/2023]
Abstract
The aim of the present study is the exploration of the compensation mechanisms in healthy adults elicited by superimposing a horizontal perturbation, through a rotation of the support base, during a whole body active rotation around the participant's own vertical body axis. Eight healthy participants stood on a rotating platform while executing 90° whole body rotations under three conditions: no concurrent platform rotation (NP), support surface rotation of ± 45° in the same (45-S) and opposite (45-O) directions. Participants' kinematics and CoP displacements were analyzed with an optoelectronic system and a force platform. In both 45-S and 45-O conditions, there was a tendency for the head to be affected by the external perturbation and to be the last and least perturbed segment while the pelvis was the most perturbed. The observed reduced head perturbation in 45-S and 45-O trials is consistent with a goal-oriented strategy mediated by vision and vestibular information, whereas the tuning of lumbar rotation is consistent with control mechanisms mediated by somato-sensory information.
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Circadian amplitude and homeostatic buildup rate in postural control. Gait Posture 2013; 38:192-7. [PMID: 23245641 DOI: 10.1016/j.gaitpost.2012.11.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 11/07/2012] [Accepted: 11/09/2012] [Indexed: 02/02/2023]
Abstract
Postural control during quiet stance is a common everyday physical activity. Sleepiness is increasingly prevalent in our 24-h society. Yet, little research exists that quantitatively links the fluctuations in sleepiness and postural control. This study quantifies the circadian amplitude and homeostatic buildup rate in postural control. With a force plate we assessed postural control in 12 participants (21-38 years) every 2h during 24h of sustained wakefulness. The sway area was 1.39 ± 0.71 mm(2) at the circadian high around noon, and 4.02 ± 0.67 mm(2) at the circadian low around 6 am (a 189% change, p=0.02). The circadian amplitude of the sway area was therefore 2.63 mm(2). The sway area was 1.92 ± 0.64 mm(2) at the start of the 24-h period and 4.42 ± 0.69 mm(2) at the end of the period (a 130% change, p<0.001). The homeostatic buildup rate of sway area was 0.04 h(-1). The circadian- and homeostatic effects on sway variability, sway velocity, sway frequency and fractal dimension were smaller but still significant. This study found that the circadian amplitude and homeostatic buildup rate are quantifiable from posturographic data, and that they have significant impact on postural control. This finding is important because it means that one could apply the framework of the famous two-process model of sleep regulation (published by Borbély in 1982) to explain the previously reported sleepiness-related changes in postural control.
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Souissi N, Zouita A, Chtourou H, Ferchichi H, Dziri C, Abedelmalek S, Souissi N. The effect of Ramadan intermittent fasting on dynamic postural control in judo athletes. BIOL RHYTHM RES 2013. [DOI: 10.1080/09291016.2013.787759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Souissi N, Chtourou H, Zouita A, Dziri C, Souissi N. Effects of Ramadan intermittent fasting on postural control in judo athletes. BIOL RHYTHM RES 2013. [DOI: 10.1080/09291016.2012.667980] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Deschamps T, Magnard J, Cornu C. Postural control as a function of time-of-day: influence of a prior strenuous running exercise or demanding sustained-attention task. J Neuroeng Rehabil 2013; 10:26. [PMID: 23452958 PMCID: PMC3598559 DOI: 10.1186/1743-0003-10-26] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 02/22/2013] [Indexed: 12/05/2022] Open
Abstract
Background The current experiment investigated the impact of two potential confounding variables on the postural balance in young participants: the induced-experimental activity prior to the static postural measurements and the well-documented time-of-day effects. We mainly hypothesized that an exhaustive exercise and a high attention-demanding task should result in alterations of postural control. Methods Ten participants performed three experimental sessions (differentiated by the activity – none, cognitive or physical – prior of the assessment of postural stability), separated by one day at least. Each session included postural balance assessments around 8 a.m., 12.00 p.m. and 5 p.m. ± 30 min. The physical and cognitive activities were performed only before the 12 o’clock assessment. The postural tests consisted of four conditions of quiet stance: stance on a firm surface with eyes open; stance on a firm surface with eyes closed; stance on a foam surface with eyes open and stance on a foam surface with eyes closed. Postural performance was assessed by various center of pressure (COP) parameters. Results Overall, the COP findings indicated activity-related postural impairment, with an increase in body sway in the most difficult conditions (with foam surface), especially when postural measurements are recorded just after the running exercise (physical session) or the psychomotor vigilance test (cognitive session). Conclusions Even if no specific influence of time-of-day on static postural control is demonstrated, our results clearly suggest that the activities prior to balance tests could be a potential confounding variable to be taken into account and controlled when assessing clinical postural balance.
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Affiliation(s)
- Thibault Deschamps
- University of Nantes, Laboratory Motricité, Interactions, Performance (EA 4334), F-44000, Nantes, France.
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Taheri M, Arabameri E. The effect of sleep deprivation on choice reaction time and anaerobic power of college student athletes. Asian J Sports Med 2012; 3:15-20. [PMID: 22461961 PMCID: PMC3307962 DOI: 10.5812/asjsm.34719] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 08/03/2011] [Indexed: 11/21/2022] Open
Abstract
Purpose The aim of this study was to determine the effect of one night's sleep deprivation on anaerobic performance and Reaction time of subjects in the morning of the following day. Methods Eighteen male college student athletes were studied twice in a balanced, randomized design. Subjects were measured for peak power, mean power and Reaction time. Results The performance showed no significant difference in both tests of anaerobic power (peak power, mean power) over the sleep deprivation period (P= 0.3; P= 0.4 respectively), but reaction time differed significantly from baseline (P=0.003). Results support the hypothesis that sleep serves a function of cognitive restitution, particularly in the maintenance of attentional mechanisms. In the light of the above considerations. Conclusions It was concluded that short-term sleep deprivation is not effective on anaerobic performance, but adversely affects cognitive function such as Reaction Time.
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Affiliation(s)
- Morteza Taheri
- Imam Khomeini International University, Qazvin, Iran
- Corresponding Author: Address: Faculty of Social Science, Imam Khomeini International University, Qazvin, Iran. E-mail:
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