Application of Motion-feedback Training on Learning Swimming
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.5 Vol.5】
The effects of feedback-training for the beginners of breastroke were investigated in this study.
The subjects (8 children and 8 college students) were divided into two groups, the experimental (E) group and the control (C). The auditive information was used for the feedback-training from the angles of ankle joints in the subjects during swimming, and the training was performed for the subjects of E group. And the usual training was performed for the subjects of C group. Both training methods were done four times a week, and then the effects of feedback-training were investigated from the two points: degrees of the ankle joints and electromyograms in the kick phase.
(1) From the degrees of the ankle joint, after the four times training, and during the training, the leg kick in both groups were maintained at smaller degrees than before the training. And this tendency was clearer in E group than C group.
(2) From the electromyograms, the tibialis anterior has an important function in the kick phase of the breaststroke. In the E group, the tendency of the continuously strong discharge of the tibialis anterior toward the end of the kick phase appeared clearer.
From those facts, the feedback-training in this study succeeded in improving the ankle joint movement of the leg kick in the breaststroke.
DESCENTE SPORTS SCIENCE Vol.5/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
The subjects (8 children and 8 college students) were divided into two groups, the experimental (E) group and the control (C). The auditive information was used for the feedback-training from the angles of ankle joints in the subjects during swimming, and the training was performed for the subjects of E group. And the usual training was performed for the subjects of C group. Both training methods were done four times a week, and then the effects of feedback-training were investigated from the two points: degrees of the ankle joints and electromyograms in the kick phase.
(1) From the degrees of the ankle joint, after the four times training, and during the training, the leg kick in both groups were maintained at smaller degrees than before the training. And this tendency was clearer in E group than C group.
(2) From the electromyograms, the tibialis anterior has an important function in the kick phase of the breaststroke. In the E group, the tendency of the continuously strong discharge of the tibialis anterior toward the end of the kick phase appeared clearer.
From those facts, the feedback-training in this study succeeded in improving the ankle joint movement of the leg kick in the breaststroke.
DESCENTE SPORTS SCIENCE Vol.5/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Takahiro Nakayama*1, Masatada Yoshizawa*2, Masaru Miwa*3, Tomoji Tanaka*4, Kouzou Matsumoto*5 |
|---|---|
| University or institution | *1 Noune Elementary School, *2 Fukui University, *3 Jin-ai Women's Junior College, *4 Nakafuji Elementary School, *5 Nan-etsu Junior High School |
Keywords
feedback-training, breastroke, ankle joint, tibialis anterior