Gait velocity and joint power generation after stroke: contribution of strength and balance

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Gait velocity and joint power generation after stroke: contribution of strength and balance

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Title: Gait velocity and joint power generation after stroke: contribution of strength and balance
Author/Creator: Mentiplay, Benjamin | Williams, Gavin | Tan, Dawn | Adair, Brooke | Pua, Yong-Hao | Bok, Chek Wai | Bower, Kelly | Cole, Michael H | Ng, Yee Sien | Lim, Lek Syn | Clark, Ross
Description: Objective:
To assess the degree to which isometric strength of multiple lower limb muscle groups and balance is associated with gait velocity and joint power generation during gait after stroke.
Design:
Sixty-three participants in a multi-site, multi-national cross-sectional, observational study underwent assessment of gait velocity (10m walk test), standing balance (computerised posturography), and isometric strength (hand-held dynamometry). Twenty-seven participants had joint power generation assessed (three-dimensional gait analysis). Bivariate associations were examined using Spearman’s correlations. Regression models with partial F-tests were used to compare the contribution to gait between measures.
Results:
While all muscle groups demonstrated significant associations with gait velocity (rho = 0.40-0.72), partial F-tests identified that ankle plantarflexor and hip flexor strength made the largest contribution to gait velocity. Ankle plantarflexor strength also had strong associations with habitual and fast paced ankle power generation (rho = 0.65 and 0.75). Balance had significant associations with habitual and fast gait velocity (rho = -0.57 and -0.53), with partial F-tests showing the contribution was independent of strength.
Conclusion:
Ankle plantarflexor and hip flexor strength had the largest contribution to gait velocity. Future research may wish to refocus strength assessment and treatment to target the ankle plantarflexors and hip flexors.
Relation: American Journal of Physical Medicine & Rehabilitation / Vol. 98, No. 10, pp.841-849
Relation: http://dx.doi.org/10.1097/PHM.0000000000001122
Year: 2019
Publisher: Lippincott Williams & Wilkins
Subject: FoR 1103 (Clinical Sciences) | FoR 1106 (Human Movement and Sports Science)

Resource Type: Journal Article
Identifier: ISSN: 0894-9115
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