This research is based on plyometric training theory. The experimental tool is a passive repeatedly plyometric machine. The purpose of this research is to establish a theoretical basis for passive repeatedly plyometric training on strength and power. The research is also to compare and analyze the effects with different variables (different training frequency; different motion frequency and load-control with increasing speed) on strength and power. This research was a one-year program. The first step was to use different motion frequency training ( 30 RPM、60 RPM、90 RPM、120 RPM、150 RPM) and load-control with increasing speed (from 30 RPM→60 RPM→90 RPM→120 RPM→150 RPM) . Subjects are 48 Physical Education Department students at Hualien Teachers College. Subjects were divided into six groups. They trained three times a week for eight weeks. SPSS for Windows 10.0 version was used for statistical analysis. The results are: 1. Although some items didn’t reach significance, but every group showed improvement after training. 2. The group trained with load-control increasing speed has the best effect. Four sports ability tests reached significant differences (p<.05) 3. There are significant differences (p<.05) in vertical jump, 30-meter run, and 1RM squat, except standing jump. 4. Among the training methods, 120 RPM can help to promote speed the most. 5. To promote strength, load-control with increasing speed was the best training method. 6. Load-control with increasing speed method can help both bounce jump ability and strength. Conclusions: The best way to promote strength was load-control with increasing speed training. The result agree with the physical training principle of progressing increasing over-loading.
This research is based on plyometric training theory. The experimental tool is a passive repeatedly plyometric machine. The purpose of this research is to establish a theoretical basis for passive repeatedly plyometric training on strength and power. The research is also to compare and analyze the effects with different variables (different training frequency; different motion frequency and load-control with increasing speed) on strength and power. This research was a one-year program. The first step was to use different motion frequency training ( 30 RPM、60 RPM、90 RPM、120 RPM、150 RPM) and load-control with increasing speed (from 30 RPM→60 RPM→90 RPM→120 RPM→150 RPM) . Subjects are 48 Physical Education Department students at Hualien Teachers College. Subjects were divided into six groups. They trained three times a week for eight weeks. SPSS for Windows 10.0 version was used for statistical analysis. The results are: 1. Although some items didn’t reach significance, but every group showed improvement after training. 2. The group trained with load-control increasing speed has the best effect. Four sports ability tests reached significant differences (p<.05) 3. There are significant differences (p<.05) in vertical jump, 30-meter run, and 1RM squat, except standing jump. 4. Among the training methods, 120 RPM can help to promote speed the most. 5. To promote strength, load-control with increasing speed was the best training method. 6. Load-control with increasing speed method can help both bounce jump ability and strength. Conclusions: The best way to promote strength was load-control with increasing speed training. The result agree with the physical training principle of progressing increasing over-loading.