Investigation of gait cycle deviation over surface irregularities utilizing muscle activities.
Hamstring muscle
gastrocnemius muscle
treadmill
uneven planes
walking
Journal
Bio-medical materials and engineering
ISSN: 1878-3619
Titre abrégé: Biomed Mater Eng
Pays: Netherlands
ID NLM: 9104021
Informations de publication
Date de publication:
2019
2019
Historique:
pubmed:
23
4
2019
medline:
5
11
2019
entrez:
23
4
2019
Statut:
ppublish
Résumé
Human beings regularly walk over even and uneven surfaces during their daily activities. A human being with lower limb disability needs an exoskeleton to walk independently. However, walking surface irregularities increase the risk of falling of exoskeleton users. This falling tendency can be minimized by balancing the exoskeleton on irregular surface profiles against the gait cycle variation. Gait variation is studied using quality EMG signals obtained from the gastrocnemius and hamstring muscle activity during uneven surface walking. The present study compares the activity of hamstring and gastrocnemius muscles during walking on a treadmill, utilizing both even and uneven planes. Integrated electromyography signals from eight healthy male subjects are collected while walking on a treadmill, even and uneven planes. Muscle activity variation on these planes is studied using two-way ANOVA with replications. The results show that hamstring muscle activity registers a sound variation in swing phase but has no variation in stance phase over all three planes, whereas gastrocnemius muscle activity changes between swing and stance phases over even and uneven planes during forward walking. The results illustrate that the gait cycle variation depends on surface irregularities which indicates the importance of surface consideration.
Sections du résumé
BACKGROUND
BACKGROUND
Human beings regularly walk over even and uneven surfaces during their daily activities. A human being with lower limb disability needs an exoskeleton to walk independently. However, walking surface irregularities increase the risk of falling of exoskeleton users. This falling tendency can be minimized by balancing the exoskeleton on irregular surface profiles against the gait cycle variation. Gait variation is studied using quality EMG signals obtained from the gastrocnemius and hamstring muscle activity during uneven surface walking.
OBJECTIVE
OBJECTIVE
The present study compares the activity of hamstring and gastrocnemius muscles during walking on a treadmill, utilizing both even and uneven planes.
METHODS
METHODS
Integrated electromyography signals from eight healthy male subjects are collected while walking on a treadmill, even and uneven planes. Muscle activity variation on these planes is studied using two-way ANOVA with replications.
RESULTS
RESULTS
The results show that hamstring muscle activity registers a sound variation in swing phase but has no variation in stance phase over all three planes, whereas gastrocnemius muscle activity changes between swing and stance phases over even and uneven planes during forward walking.
CONCLUSIONS
CONCLUSIONS
The results illustrate that the gait cycle variation depends on surface irregularities which indicates the importance of surface consideration.
Identifiants
pubmed: 31006656
pii: BME191050
doi: 10.3233/BME-191050
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM