Submaximal Elastic Resistance Band Tests to Estimate Upper and Lower Extremity Maximal Muscle Strength

Muscle strength assessment is fundamental to track the progress of performance and prescribe correct exercise intensity. In field settings, simple tests are preferred. This study develops equations to estimate maximal muscle strength in upper- and lower-extremity muscles based on submaximal elastic...

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Bibliographic Details
Published in:International journal of environmental research and public health 2021-03, Vol.18 (5), p.2749
Main Authors: Haraldsson, Bjarki T, Andersen, Christoffer H, Erhardsen, Katrine T, Zebis, Mette K, Micheletti, Jéssica K, Pastre, Carlos M, Andersen, Lars L
Format: Article
Language:English
Subjects:
Adult
Data collection
Humans
Injuries
Lower Extremity
Muscle Strength
Muscle, Skeletal
Muscles
Pain
Physical therapists
Polynomials
Range of motion
Resistance Training
Shoulder
Upper Extremity
Validity
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Summary:Muscle strength assessment is fundamental to track the progress of performance and prescribe correct exercise intensity. In field settings, simple tests are preferred. This study develops equations to estimate maximal muscle strength in upper- and lower-extremity muscles based on submaximal elastic resistance tests. Healthy adults ( = 26) performed a maximal test (1 RM) to validate the ability of the subsequent submaximal tests to determine maximal muscle strength, with elastic bands. Using a within-group repeated measures design, three submaximal tests of 40%, 60%, and 80% during (1) shoulder abduction, (2) shoulder external rotation, (3) hip adduction, and (4) prone knee flexion were performed. The association between number of repetitions and relative intensity was modeled with both 1st and 2nd order polynomials to determine the best predictive validity. For both upper-extremity tests, a strong linear association between repetitions and relative intensity was found (R = 0.97-1.00). By contrast, for the lower-extremity tests, the associations were fitted better with a 2nd order polynomial (R = 1.00). The results from the present study provide formulas for predicting maximal muscles strength based on submaximal resistance in four different muscles groups and show a muscle-group-specific association between repetitions and intensity.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph18052749