Date of Award

Spring 5-2022

Degree Type

Masters Thesis

Degree Name

Master of Science (MS)

School

Kinesiology and Nutrition

Committee Chair

Dr. Riley Galloway

Committee Chair School

Kinesiology and Nutrition

Committee Member 2

Dr. Paul Donahue

Committee Member 2 School

Kinesiology and Nutrition

Committee Member 3

Dr. Nuno Oliveira

Committee Member 3 School

Kinesiology and Nutrition

Committee Member 4

Dr. Scott Piland

Committee Member 4 School

Kinesiology and Nutrition

Abstract

Background: Advances in technology have resulted in an increase in the utilization of velocity-based training in the strength and conditioning field while utilization of inertia measurement units (IMUs) shows promise. Methods: Recreationally trained participants (N=25, 28.3 ± 2.9 years) were recruited to determine the validity of the VmaxPro device for measuring performance variables in the back squat and countermovement jump (CMJ) against a gold standard force plate. Squat variables assessed included mean concentric velocity (MCV), mean concentric power (MCP), depth, and duration while CMJ variables assessed included MCV, MCP, depth, duration, and jump height. Squat variables were assessed across 3 conditions: BW, 50% BW, and 100% BW. Results: MCV demonstrated strong correlations in the BW, 50% and 100% conditions (r= 0.965; r=.907; r= 0.827, pp pConclusion:The VmaxPro is a reasonably valid device for assessing duration and jump height when assessing CMJ performance as compared to the force plate while demonstrating overestimation bias. For back squat performance variables, the VmaxPro proves as a reasonably valid device for assessing MCV, MCP, depth, and duration while demonstrating overestimation bias in MCV and MCP.

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