Isometric Strength Database for Muscle Maximal Voluntary Endurance Field Tests: Normative Data.

Abstract

Background: Different field tests are used to evaluate muscular capacity, in particular maximal voluntary endurance. However, although there are some normative values for a few muscle endurance tests, these do not consider the mass, size or age of individuals, which are well-known factors that influence muscle performance.Hypothesis/Purpose: The purpose of this study was to investigate the test-retest reliability of 8 field tests and establish muscle endurance norms, in an healthy population, based on their anthropometric characteristics which could permit to evaluate at best the entire muscle function in a quick manner.Design:Case series. Methods:This study was conducted in two phases. The first phase was to check the reproducibility inter- and intra-assessor for 8 isometric muscle fields tests on twenty volunteered subjects age of 40.9 ± 11.6 years old. The second part was to establish muscle maximal voluntary endurance norms according of these tests on a total of 400 healthy participants segmented by age (50 males and females by age bracket: 20-29; 30-39; 40-49; 50-59 years old, for a total of 200 males and 200 females).Results:The intra and inter-assessor reproducibility tests was very high for all muscle measurements (the ICC varied between 0.915 and 0.996). Good sensitivity is observed for all isometric tests highlights with simple linear regression test demonstrating a significant impact for the variable age for all tests (p<0.001). Each muscle belt presents same ratio regardless of the age and gender group. The simultaneous multiple regression analyses highlight that the anthropometric characteristics of subjects influence significantly the performance of isometric tests. Conclusion:This study has permitted to established prediction equations in an healthy population according to their anthropometric characteristics as well as agonist/antagonist ratios for eight muscle isometric field tests after to be demonstrated an excellent reproducibility of all tests.

Grip strength, functional range and anthropometric dimensions, and indication on fulfilling occupations in the home and workplace: A cross-sectional study

“…Therefore, we suggest that clinicians consider taking the Isometric Endurance when determining function required for occupations for this clinical population. Janik et al (2020) provided the normative data that clinicians could refer to. Several studies have found that grip strength is related to hand dominance, hand span, width and length, the circumference of the forearm and middle finger length (Abaraogu et al, 2017;Anakwe et al, 2007;Kunelius et al, 2007;MacDermid et al, 2002;Shurrab et al, 2015).…”

“…Therefore, we suggest that clinicians consider taking the Isometric Endurance when determining function required for occupations for this clinical population. Janik et al (2020) provided the normative data that clinicians could refer to.…”