Japanese Journal of Health and Human Ecology
Online ISSN : 1882-868X
Print ISSN : 0368-9395
ISSN-L : 0368-9395
A Medical Aproach to the Distance Ski-Players Physical Fitness
Part 2. Electromyographic Study
Osamu MUKAWA
Author information
JOURNAL FREE ACCESS

1970 Volume 36 Issue 1 Pages 43-50

Details
Abstract

In this study of cross-country skiers, a videotape recorder was used along with 2 cameras and a telemeter for simultaneous EMG leads from f, 8 poles to simultaneously record the EMG and observe behavior in the same picture. The following results-were obtained from analysis. 1. From the upper extremity system, the selected and ordinary players gave marked muscle discharges from the pushing of the stock to the release. However, a sudden decrease of discharge was noted in selected players but not in ordinary players. 2. From the lower extremity systm, a marked discharge was noted at the moment of the thrusting of the ski both in selected and ordinary players. In other phases, the discharge was greater in oreinary players than in selected players. 3. In selected players, concentrated muscle activity was noted but none was seen in ordinary players, also without the relaxed state.

Content from these authors
© The Japanese Society of Health and Human Ecology
Previous article
feedback
Top