| Summary: | 碩士 === 國立臺灣體育學院 === 體育研究所 === 94 === This study is to analyze the relationship between proportions of different kinds of propulsive power and 100M breaststroke performance for male and female breaststroke swimmers. Twelve male and twelve female breaststroke swimmers from Taichung swimming team and the National Taiwan College of Physical Education were in the experiment. The age group is among 19.5+ 1.7 years old, height 168+7.2 cm, and weight 61.6+7.6 kg. All swimmers were tested by Power-rack machine based on the counter-balancing design, and 3 measures of propulsive power: arm stroke, leg kick and combined whole stroke efficiency, were recorded for each swimmer. The results are compared with their 100M performances. Statistical inference is as following:
1. The proportions of the arm stroke and leg kick in the combined whole stroke propulsive power are 42.87 + 5.67% and 50.89 + 5.85% for male swimmers, respectively. The same proportions are 45.22 + 7.61% and 48.11 + 7.05% for female swimmers. There is no statistically significant difference in the propulsive power proportions between male and female swimmers.
2. Coordinative Efficiency, the leftover proportion after subtracting are stroke and leg kick, is 6.23% for male and 6.68% for female. There is no statistically significant difference, either.
3. The coefficients of relation between 100M breaststroke performance and propulsive power are: male-whole stroke (r = -0.86**), male-arm stroke (r = -0.82*), male-leg kick (r = -0.65*), female-whole stroke (r = -0.66*), female-arm stroke (r = -0.51), female-leg kick (r = -0.49). There are statistically significant relationships between 100M breaststroke performance and propulsive power except female arm stroke and leg kick.
The above results indicate that the proportions of arm stroke and leg kick propulsive power tend to be no difference between male and female breaststroke swimmers. Nevertheless, arm stroke and leg kick are still the two major factors of the breaststroke performance. Also, in order to achieve better performance, improving propulsive power is very important in the training schedule.
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