Document Type

Thesis - Open Access

Award Date


Degree Name

Master of Science (MS)

Department / School

Health and Nutritional Sciences

First Advisor

Matthew Vukovich


Many Strength and Conditioning (S&C) coaches utilize a one-rep max (1RM) exercise test to gauge the maximal strength of athletes, and then prescribe resistance training programs based on a relative percentage of 1RM to obtain strength or power adaptations. However, many S&C coaches have raised questions regarding the safety and necessity of a 1RM test. Attempts to mitigate the weaknesses of 1RM testing have led to other methods of testing including repetition max testing (3RM, 5RM, 10RM, etc.) as well as load/velocity profiling. The main purpose of this study is to determine if 1RM can be accurately estimated from maximal power outputs at submaximal loads. This study consisted of 28 Division I athletes (male=18, female=10). Subjects were tested for 1RM in the squat (S) and bench press (BP) exercises and followed up with maximal power testing at a range of submaximal loads. Power outputs and velocities were measured using a Tendo® Power Analyzer V-316 electronic device. Significant correlations were found between average power (AP) and 1RM for both males and females in both exercises. Percent 1RM (%1RM) intensities had stronger correlations to actual 1RM (r=0.93, 0.92, 0.91, 0.88) than percent bodyweight (%BW) intensities (r=0.90, 0.87, 0.86, 0.73). However, %BW intensities still possessed adequate correlations to use in the model to predict 1RM with good accuracy. The results from this study indicate that 1RM’s can be accurately predicted from AP measures at submaximal intensities. This method of estimating 1RM may be optimal for athlete safety and most practical for use by S&C coaches.

Library of Congress Subject Headings

Muscle strength -- Testing.
Weight training.
Isometric exercise.



Number of Pages



South Dakota State University



Rights Statement

In Copyright