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Reliability of Strength Testing using the Advanced Resistive Exercise Device and Free WeightsThe Advanced Resistive Exercise Device (ARED) was developed for use on the International Space Station as a countermeasure against muscle atrophy and decreased strength. This investigation examined the reliability of one-repetition maximum (1RM) strength testing using ARED and traditional free weight (FW) exercise. Methods: Six males (180.8 +/- 4.3 cm, 83.6 +/- 6.4 kg, 36 +/- 8 y, mean +/- SD) who had not engaged in resistive exercise for at least six months volunteered to participate in this project. Subjects completed four 1RM testing sessions each for FW and ARED (eight total sessions) using a balanced, randomized, crossover design. All testing using one device was completed before progressing to the other. During each session, 1RM was measured for the squat, heel raise, and deadlift exercises. Generalizability (G) and intraclass correlation coefficients (ICC) were calculated for each exercise on each device and were used to predict the number of sessions needed to obtain a reliable 1RM measurement (G . 0.90). Interclass reliability coefficients and Pearson's correlation coefficients (R) also were calculated for the highest 1RM value (1RM9sub peak)) obtained for each exercise on each device to quantify 1RM relationships between devices.
Document ID
20090005240
Acquisition Source
Johnson Space Center
Document Type
Other
Authors
English, Kirk L. (JES Tech Houston, TX, United States)
Loehr, James A. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Laughlin, Mitzi A. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Lee, Stuart M. C. (Wyle Integrated Science and Engineering Group Houston, TX, United States)
Hagan, R. Donald (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Public Use Permitted.

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