Author:
Wang Jinxiang,Zhu Ranran,Xu Xiao-ting,Liu Shuting,Li Zhenrui,Guo Chaoyang,Tao Xuchen,Qian Liang,Charles Ravon,Fang Lei
Abstract
AbstractStrength training is recommended by the American Physical Therapy Association to improve muscle strength, mobility, and balance following knee replacement. Few studies have focused on the direct effects of strength training on functional ambulation, and potential dose–response relationships between strength training parameters and the effect remain unclear. The aim of this systematic review, meta-analysis, and meta-regression was to evaluate the effects of strength training on functional ambulation following knee replacement (KR). We also aimed to explore potential dose–response relationships between strength training parameters and performance in functional ambulation. A systematic literature search of eight online databases was performed on March 12, 2023, for randomized controlled trials evaluating the effects of strength training on functional ambulation by six-minute walk test (6MWT) or timed-up and go test (TUG) after KR. Data were pooled by random-effect meta-analyses and presented as weighted mean difference (WMD). A random-effect meta-regression was performed for four predetermined training parameters, namely, duration (weeks), frequency (sessions per week), volume (time per session), and initial time (after surgery) separately to explore dose–response relationships with WMD. Fourteen trials encompassing 956 participants were included in our study. Meta-analyses showed an improvement in 6MWT performance after strength training (WMD: 32.15, 95% CI 19.44–44.85) and a decrease in time to complete TUG (WMD: − 1.92, 95% CI − 3.43 to − 0.41). Meta-regression revealed a dose–response relationship only between volume and 6MWT, with a decreasing trend (P = 0.019, 95% CI − 1.63 to − 0.20). Increasing trends of improvement in 6MWT and TUG were observed with increasing training duration and frequency. A slight decreasing trend of improvement was observed in 6MWT with postponed initial time, while an opposite trend was observed in TUG. Based on existing studies, moderate-certainty evidence suggests that strength training could increase 6MWT distance, and low-certainty evidence shows that strength training could decrease the time to complete TUG after KR. Meta-regression results only suggested a dose–response relationship between volume and 6MWT with a decreasing trend.Registration: PROSPERO: CRD42022329006.
Funder
Three-year Action Plan for the Development of TCM in Shanghai-Highland construction for International Standardization of TCM
Publisher
Springer Science and Business Media LLC
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