The reliability of the 1RM strength test for untrained middle-aged individuals

Levinger, Itamar, Goodman, Craig, Hare, David L., Jerums, George, Toia, Deidre and Selig, Steve 2009, The reliability of the 1RM strength test for untrained middle-aged individuals, Journal of science and medicine in sport, vol. 12, no. 2, pp. 310-316, doi: 10.1016/j.jsams.2007.10.007.

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Title The reliability of the 1RM strength test for untrained middle-aged individuals
Author(s) Levinger, Itamar
Goodman, Craig
Hare, David L.
Jerums, George
Toia, Deidre
Selig, SteveORCID iD for Selig, Steve
Journal name Journal of science and medicine in sport
Volume number 12
Issue number 2
Start page 310
End page 316
Total pages 7
Publisher Elsevier Australia
Place of publication Chatswood, N.S.W.
Publication date 2009-03
ISSN 1440-2440
Keyword(s) reliablity
resistance training
strength testing
Summary The one-repetition maximum (1RM) test is considered the gold standard for assessing muscle strength in non-laboratory situations. Since most previous 1RM reliability studies have been conducted with experienced young participants, it is unclear if acceptable test–retest reliability exists for untrained middle-aged individuals. This study examined the reliability of the 1RM strength test of untrained middle-aged individuals. Fifty-three untrained males (n = 25) and females (n = 28) aged 51.2 ± 0.9 years participated in the study. Participants undertook the first 1RM test (T1) 4–8 days after a familiarisation session with the same exercises. 1RM was assessed for seven different exercises. Four to eight days after T1, participants underwent another identical 1RM test (T2). Ten weeks later, 27 participants underwent a third test (T3). Intraclass correlation coefficients (ICC), typical error as a coefficient of variation (TEcv), retest correlation, repeated measures ANOVA, Bland–Altman plots, and estimation of 95% confidence limits were used to assess reliability. A high ICC (ICC > 0.99) and high correlation (r > 0.9) were found for all exercises. TEcv ranged from 2.2 to 10.1%. No significant change was found for six of the seven exercises between T1 and T2. Leg press was slightly higher at T2 compared to T1 (1.6 ± 0.6%, p = 0.02). No significant change was found between T2 and T3 for any exercise. 1RM is a reliable method of evaluating the maximal strength in untrained middle-aged individuals. It appears that 1RM-testing protocols that include one familiarisation session and one testing session are sufficient for assessing maximal strength in this population.
Language eng
DOI 10.1016/j.jsams.2007.10.007
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2007, Sports Medicine Australia
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Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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