| Summary: | 碩士 === 國立體育學院 === 教練研究所 === 87 === The purpose of this study was to probe into the Chen''s Passive Repeatedly Plyometric Power Machine which was designed by Chuan-Show Chen and Tyzz-Yuang Shiang. Seventeen baseball male players were selected as the subjects, and divided into three groups:
Experimental groupⅠ: control weight and increase speed (6 people). Experimental groupⅡ: control speed and increase weight (6 people). Comparison group: traditional composite training (5 people).
Experimental groups were trained by Chen''s Passive Repeatedly Plyometric Power Machine, and the Smith Leg Press weight training was used for Comparison group. Three times a week over six weeks lower extremities strength training was applied for all subjects. All subjects were tested of maximal strength of lower extremity, power, body shape.
The results of the study are noted as followed:
1. Maximal strength of lower extremity: There were significant increase in Experimental groups and comparison group (P<0.05), and but there wasn''t significant difference between three groups.
2.Power: There was significant increase in vertical-jump, rebound-jump and standing jump of Experimental groupⅠ(P<0.05). There were significant increase in vertical-jump and rebound-jump of Experimental groupⅡ (P<0.05). There were significant increase in standing jump of Comparison group (P<0.05), but there wasn''t significant difference between three groups.
3.Body shape: There wasn''t significant increase in gluteus and thigh length of Experimental groupⅠ. There was significant increase in gluteus length of Experimental group (P<0.05). There was significant increase in left thigh, left leg, and right leg length (P<0.05) of Comparison group, but there wasn''t significant difference between three groups.
According to results, we concluded as followed:
1. Chen''s Passive Repeatedly Plyometric Power Machine can improve power.
2.There is much more training effect of power in Experimental groupⅠthan Experimental groupⅡ.
3.There is much more training effect of strength in Experimental groupⅡthan Experimental groupⅠ.
4.Comparison group may have better training effect in isotonic strength training.
5.Chen''s Passive Repeatedly Plyometric Power Machine may have better training effect in gluteus than traditional composite training.
|
|---|
