Progressive Movement Training: An Analysis of its Effects on Muscular Strength and Power Development
Authors: Orrin Whaley, Abigail Larson, Mark DeBeliso
Corresponding Author:
Orrin Whaley, BS
568W 200N
Provo UT, 84601
orrinwhaley@yahoo.com
801-361-2390
Orrin Whaley is a student at Southern Utah University. Upon the completion of this research project he will earn a MS in Sports Conditioning and Performance.
Progressive Movement Training: An Analysis of its Effects on Muscular Strength and Power Development
ABSTRACT
Purpose: Muscular strength and power are important attributes in many sports, so research on training methods that may improve these attributes is of high interest. One such training method is PMT, which incorporates a partial ROM movement with a supramaximal load. This study attempted to compare PMT to traditional full ROM training by comparing 1 RM back squat, vertical jump height, and power output scores from the two groups. Methods: Thirty-six high school male subjects were randomized to participate in a 7-week squat program in either the PMT group (n=21) or the full ROM group (n=15). The subject’s weight, 1 RM back squat, and vertical jump were measured prior to and upon completion of the training program. Power output was calculated using the subject’s weight and vertical jump height (8). Results: The study included 36 male high school students who were enrolled in a weight training class (n=15 in the full ROM group and n=21 in the PMT group). The PMT group saw significant (p<.001) increases in vertical jump performance (cm) and power output (watts) from pretest to posttest, but the full ROM did not. Significant increases (p<.001) in back squat strength were observed in both groups from the pretest to the post-test. The percent improvement from pretest to posttest was compared between groups on all three performance measures, with no significant differences found (p>.05), indicating that both forms of resistance training provide comparable benefits for increasing lower body strength and power. Conclusion: PMT is as effective and may be more effective than full ROM training for increasing lower body strength and power.
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