4.6 Article

Reliable and effective novel home-based training set-up for application of an evidence-based high-loading stimulus to improve triceps surae function

期刊

JOURNAL OF SPORTS SCIENCES
卷 39, 期 24, 页码 2786-2795

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/02640414.2021.1959981

关键词

Injury prevention; muscle imbalance; musculoskeletal rehabilitation; tendon rehabilitation

资金

  1. Open Access Publication Fund of Humboldt-Universitat zu Berlin

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This study developed an easy-to-use sling-based training set-up for home-based Achilles tendon and triceps surae muscle strength training and assessed its reliability and effectiveness in healthy men. The results showed that the home-based training set-up significantly improved muscle strength and jump performance, providing a new option for high-loading interventions.
High-loading interventions aiming for muscle-tendon adaptations were so far implemented in on-site facilities. To make this evidence-based stimulus more accessible, we developed an easy-to-use sling-based training set-up for home-based Achilles tendon and triceps surae muscle strength training and assessed its reliability and effectiveness in healthy men. To assess reliability (n=11), intra-class correlation (ICC) and root mean square (RMS) differences of isometric maximum voluntary contraction (MVC) of the plantar flexors were used. Effectiveness was tested in a controlled intervention trial (n=12), applying one-legged high-loading intervention for 3 months with our mobile set-up, while the contralateral/untrained leg served as control, and assessing plantar flexor MVC, drop (DJ) and countermovement jump (CMJ) height. Reliability was excellent between (ICCB=0.935) and within session (ICC(W)s=0.940-0.967). The mean RMS difference between and within sessions was 5.3% and 4.7%, respectively. MVCs of the trained/intervention leg increased by 10.2 +/- 7% (P=0.004) (dynamometry) and 30.2 +/- 22.5% (mobile set-up) (P=0.012). MVC of the untrained/control leg did not change (P>0.05). DJ height increased (P=0.025; D-z=2.13) by 2.37 +/- 2.9cm. CMJ height (P>0.05) did not change. We recommend the evidence-based high-loading application with our novel home-based training set-up as reliable and effective improving strength and jump performance of the plantar flexor muscle-tendon unit.

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