"Comparison of Time to Peak Rapid Force Production" by Anthony M. Rogers Jr, Matthew P. Gonzalez et al.
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Abstract

Sports such as football (FB), track (TR), and basketball (BB) use movements that require rapid force development in order to be successful. An athlete’s ability to generate power is vital for performance in these sports. While many studies have looked at rapid force development in one sport, there is a paucity of research when comparing athletes across different sports for their time to peak force development. PURPOSE: The purpose of this study was to compare male FB, BB, and TR athletes’ time to peak force and rate of development performance. METHODS: A total of 138 athletes (n=14 BB, n=108 FB, n=16 TR) completed two trials of the isometric mid-thigh pull with force platforms used for measuring ground reaction data. Measures from the isometric mid-thigh pull included time to peak force and rate of force development (RFD) at epochs of 50ms, 100ms, 150ms, 200ms, 250ms. Individual linear mixed-models were constructed for each dependent variable (time to peak force and RFD 50,100,150,200,250 ms) with Sport and Trial as a Fixed Factor and an interaction of Sport*IMTP Trial with each athlete as a random intercept. More specifically, a generic model was constructed as y=Sport*Trial + (1|Athlete). Models met all the statistical assumptions and model performance was determined using AIC, BIC, and R2. RESULTS: There were no differences found in either time to peak force (BB =2.87 ±1.98s, FB =3.40 ±1.56s, TR =3.14 ±1.31s, p>0.05), rate of force development at 50ms (BB M=6895.74 ±4155.87 N/s, FB M=6000.91 ±7143.80 N/s, TR M=6948.25 ±5957.56 N/s), 100ms (BB M=7389.82 ±4170.42 N/s, FB M=5138.16 ±4906.71 N/s, TR M=6832.68 ±4852.58 N/s), 150ms (BB M=6043.04 ±2363.08 N/s, FB M=4679.04 ±4053.51 N/s, TR M=6440.04 ±4001.19 N/s), 200ms (BB M=5577.99 ±2041.35 N/s, FB M=4285.77 ±3476.65 N/s, TR M=5778.63 ±2881.08 N/s), and 250ms (BB M=4899.58 ±1996.59 N/s, FB M=3796.88 ±2913.15 N/s, TR M=4917.58 ±2184.59 N/s) CONCLUSION: There were no differences in rapid force production between the athletes of the examined three sports. Practical Applications: Rapid force production is a vital aspect of these three sports, regardless of the different demands that each sport requires, which could explain the lack of differences found in this investigation.

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