Scaling isometric mid-thigh pull maximum strength in division I Athletes: are we meeting the assumptions?
Abstract
This study examined the validity of various scaling methods, isometric mid-thigh pull (IMTP) peak force using various scaling methods, and the relationships between IMTP peak force and countermovement jump height. Fifty-one collegiate baseball and soccer athletes performed two maximal IMTPs. Absolute peak force was compared between teams and when data were scaled using ratio (RS), traditional allometric (ALLOTrad), and fitted allometric (ALLOFit) scaling. ALLOTrad and ALLOFit validity was violated because different derived exponents existed for baseball (b = 0.20) and soccer (b = 1.20). Soccer athletes produced greater RS peak force compared to baseball (p = 0.012), while no difference existed with absolute, ALLOTrad or ALLOFit (all p > 0.05) peak force. Moderate relationships existed between body mass and absolute (r = 0.402, p = 0.003) and RS (r = -0.328, p = 0.019) peak force, while trivial relationships existed with ALLOTrad and ALLOFit (both r < -0.10, p > 0.05). Trivial relationships existed between countermovement jump height and absolute, RS, ALLOTrad, and ALLOFit (all r < 0.20, p > 0.05) peak force. The current dataset violated allometric scaling assumptions, making it inappropriate to use ALLOTrad and ALLOFit scaling. Practitioners must understand the assumptions, limitations, and purpose of scaling methods.
RAS ID
28635
Document Type
Journal Article
Date of Publication
1-1-2020
School
School of Medical and Health Sciences / Centre for Exercise and Sports Science Research
Copyright
subscription content
Publisher
Taylor and Francis
Recommended Citation
Suchomel, T., Nimphius, S., & Stone, M. H. (2020). Scaling isometric mid-thigh pull maximum strength in division I Athletes: are we meeting the assumptions?. DOI: https://doi.org/10.1080/14763141.2018.1498910
Comments
Suchomel, T. J., Nimphius, S., & Stone, M. H. (2020). Scaling isometric mid-thigh pull maximum strength in division I Athletes: are we meeting the assumptions?. Sports Biomechanics, 19(4), 532 - 546. https://doi.org/10.1080/14763141.2018.1498910