PubMed · 2012 · 74 citations · 0 references
EducationKinesiologySports MedicineExercise PhysiologyExercise TestingPhysical ActivityFitness AssessmentMuscle Strength TestingMuscular StrengthMuscular Strength TestingPhysical FitnessPhysical Fitness AssessmentCountermovement Jump TestingCriterion ValidityField Fitness TestsField-based Fitness TestingField-based Fitness TestsFitness Test ValidityMuscular Strength AssessmentSquat Jump
The study aimed to examine the relationship between isokinetic strength and field‑based muscular fitness tests in adolescents. Isokinetic strength was measured at 90°/s and 60°/s, and field tests—including handgrip, arm hangs, and various jumps—alongside body composition were assessed to evaluate these associations. All field tests showed significant correlations with isokinetic strength, with handgrip and standing long jump exhibiting the strongest associations (r = 0.61–0.87) and weight‑standardized scores improving predictive power by about 20 %.
The purpose of the present study was to analyze the association between isokinetic strength and field-based muscular fitness tests in youth.One hundred twenty-six adolescents (14.4±1.7 y) participated in the study. Upper and lower body isokinetic strength were measured at preset angular velocities of 90 º/s and 60 º/s, respectively. Muscular fitness was also assessed by means of field-based tests: handgrip strength, bent and extended arm hang tests, standing long jump, squat jump, countermovement jump and Abalakov jump. Height, weight and skinfold thickness were used to estimate body composition.All field-based tests were significantly associated with isokinetic peak torque and power (P<0.001 in all cases). Handgrip strength and standing long jump showed the highest associations with the isokinetic parameters (0.61≤r≤0.87; 0.39≤R2≤0.76). Weight-bearing field tests increased on average 20 % their association (R2) with isokinetic parameters when standardized by individual's body weight (test score × weight), while the average increase was 16 % when standardized by fat-free mass (test score × fat-free mass).Handgrip strength and standing long jump tests seem to be the most valid field-based muscular fitness tests when compared to isokinetic strength. These tests can be useful to assess muscular fitness in young people when laboratory methods are not feasible.