Influence of stride frequency manipulation on muscle activity during running with body weight support

Kenji Masumoto, Jared Joerger, John A. Mercer

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

Background: Running with body weight support (BWS) has been used for physical fitness enhancement. Nevertheless, gait mechanics of running with BWS is not fully understood. Research question: We investigated influence of stride frequency manipulation on muscle activity during running at various BWS conditions. Methods: Nineteen participants (23.8 ± 4.1 years) ran on a lower body positive pressure treadmill at their preferred speed and preferred stride frequency (PSF) for 0%BWS, 50%BWS, and 80%BWS conditions. Preferred speed and PSF were selected for each of the BWS conditions. The stride frequency conditions consisted of running at PSF, PSF+10%, and PSF-10%. Muscle activity from the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and gastrocnemius (GA) were measured. Results: RF and BF during running at the PSF+10% were higher than when running at the PSF, regardless of BWS (P < 0.01). Additionally, RF and TA during running at the PSF-10% were higher than when running at the PSF, regardless of BWS (P < 0.05). Furthermore, RF, TA, GA, and PSF during running decreased with increasing BWS (P < 0.05), although preferred speed increased with increasing BWS (P < 0.001). Significance: These observations suggest that manipulating stride frequency by 10% from the PSF during running produces greater RF, BF, and TA than when running at the PSF, regardless of BWS. Furthermore, it was suggested that a change in BWS influences RF, TA, GA, PSF, and preferred speed during running. Such information may be useful to enable the practitioner to refine the use of running with BWS in exercise programs.

本文言語英語
ページ(範囲)473-478
ページ数6
ジャーナルGait and Posture
61
DOI
出版ステータス出版済み - 3 2018

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 整形外科およびスポーツ医学
  • リハビリテーション

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