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RESEARCH PRODUCT

The sit up test to exhaustion as a test for muscular endurance evaluation

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Aims/Hypothesis The aim of this study was to examine the sit up test to exhaustion as a field test for muscular endurance evaluation in a sample of sedentary people of both sexes. Methods A cross-sectional study was performed. Three-hundred-eighty-one participants volunteered for the study (28.5 ± 10.0 years; 168.2 ± 8.9 cm; 65.1 ± 11.1 kg), of which 194 males (27.5 ± 10.2 years; 173.6 ± 7.0 cm; 71.2 ± 5.2 kg) and 187 females (29.6 ± 10.1 years; 162.6 ± 7.1 cm; 58.7 ± 8.9 kg). Each subject voluntarily and randomly performed: a sit up test (SUT), a push up test (PUT), and a free weight squat test (ST), all till exhaustion. A multiple regression analysis was adopted for data analysis. Subsequently a percentile model for muscle endurance was developed. The 25th, 50th, and 75th percentile were identified as upper limit for low muscular endurance, average muscular endurance, and lower limit for high muscular endurance, respectively. Results Considering the sit up test as the dependent variable, the coefficients (R2 = 0.23; r = 0.49; p < 0.001), and (R2 = 0.31; r = 0.57; p < 0.001) emerged from a multiple regression analysis applied with respect to the push up test and the squat test, respectively. Gender stratification showed regression coefficients of (R2 = 0.19; r = 0.44; p < 0.001) for SUT vs. PUT, and (R2 = 0.30; r = 0.56; p < 0.001) for SUT vs. ST in male; and (R2 = 0.23; r = 0.49; p < 0.001) for SUT vs. PUT, and (R2 = 0.34; r = 0.59; p < 0.001) for SUT vs. ST in female. Conclusions/Interpretation The SUT showed low inter-relation with the other proposed tests indicating that the adoption of a single test for the global evaluation of muscle endurance is not the optimal approach. Moreover, the SUT was found to be inexpensive, safe, and appropriate for core muscle endurance measurement for both male and female.