Table of Contents
Physiology Journal
Volume 2013 (2013), Article ID 171809, 8 pages
http://dx.doi.org/10.1155/2013/171809
Clinical Study

Combined Effects of Stretching and Resistance Training on Ankle Joint Flexibility

1Department of Sports Sciences, Japan Institute of Sports Science, Tokyo 1560056, Japan
2Faculty of Sport and Health Science, Ritsumeikan University, Shiga 5258577, Japan
3National Institute of Fitness and Sports in Kanoya, Kagoshima 8912393, Japan
4Faculty of Sport Sciences, Waseda University, Saitama 3591192, Japan

Received 10 October 2013; Revised 19 November 2013; Accepted 20 November 2013

Academic Editor: Atsunori Kamiya

Copyright © 2013 E. Kato et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of the present study was to clarify the combined effects of stretching and resistance training on the active and passive dorsiflexion range of motion of ankle joint. Sixteen young adult men were randomly assigned to a training () or a control () group. The training group trained one leg for the combined program of static calf stretching and dorsiflexors resistance training program (STR+TR) and the other leg for static stretching program only (STR). The training group executed stretching of both legs every day and resistance training every other day for six weeks. After the training program, in STR+TR side, both active and passive dorsiflexion range of motions significantly () increased and also isometric maximal voluntary dorsiflexion torque increased, while in STR side, only passive dorsiflexion range of motion increased. In passive dorsiflexion range of motion, increased dorsiflexion ROM was accompanied by increased tendon elongation not muscle elongation. In conclusion, the combined program of stretching for calf muscles and resistance training for dorsiflexors increases active as well as passive dorsiflexion range of motion, while static calf stretching program is effective only for the increase in passive dorsiflexion range of motion.