Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise
A forward head and rounded shoulder posture is a poor posture that is widely seen in everyday life. It is known that sitting in such a poor posture with long hours will bring health issues such as muscle pain. However, it is not known whether sitting in this poor posture for a short period of time w...
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doaj-dcb0ea5ee02f493db211f910296915032020-11-25T03:40:32ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2020-10-011110.3389/fphys.2020.541974541974Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical ExerciseLei Lu0Lei Lu1Mark Robinson2Ying Tan3Kusal Goonewardena4Xinliang Guo5Iven Mareels6Denny Oetomo7Melbourne School of Engineering, The University of Melbourne, Parkville, VIC, AustraliaSchool of Mechatronics Engineering, Harbin Institute of Technology, Harbin, ChinaMelbourne School of Engineering, The University of Melbourne, Parkville, VIC, AustraliaMelbourne School of Engineering, The University of Melbourne, Parkville, VIC, AustraliaElite Akademy Sports Medicine, Parkville, VIC, AustraliaMelbourne School of Engineering, The University of Melbourne, Parkville, VIC, AustraliaIBM Research - Australia, Southbank, VIC, AustraliaMelbourne School of Engineering, The University of Melbourne, Parkville, VIC, AustraliaA forward head and rounded shoulder posture is a poor posture that is widely seen in everyday life. It is known that sitting in such a poor posture with long hours will bring health issues such as muscle pain. However, it is not known whether sitting in this poor posture for a short period of time will affect human activities. This paper investigates the effects of a short-duration poor posture before some typical physical activities such as push-ups. The experiments are set up as follows. Fourteen male subjects are asked to do push-ups until fatigue with two surface electromyography (sEMG) at the upper limb. Two days later, they are asked to sit in this poor posture for 15 min with eight sEMG sensors located at given back muscles. Then they do the push-ups after the short-duration poor posture. The observations from the median frequency of sEMG signals at the upper limb indicate that the short-duration poor posture does affect the fatigue procedure of push-ups. A significant decreasing trend of the performance of push-ups is obtained after sitting in this poor posture. Such effects indicate that some parts of the back muscles indeed get fatigued with only 15 min sitting in this poor posture. By further investigating the time-frequency components of sEMG of back muscles, it is observed that the low and middle frequencies of sEMG signals from the infraspinatus muscle of the dominant side are demonstrated to be more prone to fatigue with the poor posture. Although this study focuses only on push-ups, similar experiments can be arranged for other physical exercises as well. This study provides new insights into the effect of a short-duration poor posture before physical activities. These insights can be used to guide athletes to pay attention to postures before physical activities to improve performance and reduce the risk of injury.https://www.frontiersin.org/article/10.3389/fphys.2020.541974/fullpoor posturesurface electromyographymuscle fatiguefrequency spectrumphysical activity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lei Lu Lei Lu Mark Robinson Ying Tan Kusal Goonewardena Xinliang Guo Iven Mareels Denny Oetomo |
spellingShingle |
Lei Lu Lei Lu Mark Robinson Ying Tan Kusal Goonewardena Xinliang Guo Iven Mareels Denny Oetomo Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise Frontiers in Physiology poor posture surface electromyography muscle fatigue frequency spectrum physical activity |
author_facet |
Lei Lu Lei Lu Mark Robinson Ying Tan Kusal Goonewardena Xinliang Guo Iven Mareels Denny Oetomo |
author_sort |
Lei Lu |
title |
Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise |
title_short |
Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise |
title_full |
Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise |
title_fullStr |
Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise |
title_full_unstemmed |
Effective Assessments of a Short-Duration Poor Posture on Upper Limb Muscle Fatigue Before Physical Exercise |
title_sort |
effective assessments of a short-duration poor posture on upper limb muscle fatigue before physical exercise |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Physiology |
issn |
1664-042X |
publishDate |
2020-10-01 |
description |
A forward head and rounded shoulder posture is a poor posture that is widely seen in everyday life. It is known that sitting in such a poor posture with long hours will bring health issues such as muscle pain. However, it is not known whether sitting in this poor posture for a short period of time will affect human activities. This paper investigates the effects of a short-duration poor posture before some typical physical activities such as push-ups. The experiments are set up as follows. Fourteen male subjects are asked to do push-ups until fatigue with two surface electromyography (sEMG) at the upper limb. Two days later, they are asked to sit in this poor posture for 15 min with eight sEMG sensors located at given back muscles. Then they do the push-ups after the short-duration poor posture. The observations from the median frequency of sEMG signals at the upper limb indicate that the short-duration poor posture does affect the fatigue procedure of push-ups. A significant decreasing trend of the performance of push-ups is obtained after sitting in this poor posture. Such effects indicate that some parts of the back muscles indeed get fatigued with only 15 min sitting in this poor posture. By further investigating the time-frequency components of sEMG of back muscles, it is observed that the low and middle frequencies of sEMG signals from the infraspinatus muscle of the dominant side are demonstrated to be more prone to fatigue with the poor posture. Although this study focuses only on push-ups, similar experiments can be arranged for other physical exercises as well. This study provides new insights into the effect of a short-duration poor posture before physical activities. These insights can be used to guide athletes to pay attention to postures before physical activities to improve performance and reduce the risk of injury. |
topic |
poor posture surface electromyography muscle fatigue frequency spectrum physical activity |
url |
https://www.frontiersin.org/article/10.3389/fphys.2020.541974/full |
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