Clinical tests of ankle plantarflexor strength do not predict ankle power generation during walking.

Abstract:

OBJECTIVE:The aim of this study was to investigate the relationship between a clinical test of ankle plantarflexor strength and ankle power generation (APG) at push-off during walking. DESIGN:This is a prospective cross-sectional study of 102 patients with traumatic brain injury. OUTCOME MEASURES:Handheld dynamometry was used to measure ankle plantarflexor strength. Three-dimensional gait analysis was performed to quantify ankle power generation at push-off during walking. RESULTS:Ankle plantarflexor strength was only moderately correlated with ankle power generation at push-off (r = 0.43, P < 0.001; 95% confidence interval, 0.26-0.58). There was also a moderate correlation between ankle plantarflexor strength and self-selected walking velocity (r = 0.32, P = 0.002; 95% confidence interval, 0.13-0.48). CONCLUSIONS:Handheld dynamometry measures of ankle plantarflexor strength are only moderately correlated with ankle power generation during walking. This clinical test of ankle plantarflexor strength is a poor predictor of calf muscle function during gait in people with traumatic brain injury.

journal_name

Am J Phys Med Rehabil

authors

Kahn M,Williams G

doi

10.1097/PHM.0000000000000196

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

114-22

issue

2

eissn

0894-9115

issn

1537-7385

journal_volume

94

pub_type

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