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The Journal of Sports Medicine and Physical Fitness 2012 Giugno;52(3):263-72

lingua: Inglese

Criterion-related validity of field-based muscular fitness tests in youth

Artero E. G. 1, 2, España-Romero V. 2, 3, Castro-Piñero J. 3, 4, Ruiz J. R. 3, 5, Jiménez-Pavón D. 1, 6, Aparicio V. A. 7, Gatto-Cardia M. C. 8, Baena P. A. 5, Vicente-Rodríguez G. 6, 9, Castillo M. J. 1, Ortega F. B. 1, 3

1 Department of Physiology, School of Medicine, University of Granada, Granada, Spain;
2 Department of Exercise Science, University of South Carolina, Columbia, USA;
3 Unit for Preventive Nutrition, Department of Biosciences and Nutrition at NOVUM, Karolinska Institutet, Huddinge, Sweden;
4 Department of Physical Education, School of Education, University of Cadiz, Puerto Real, Spain;
5 Department of Physical Education and Sport, School of Physical Activity and Sport Sciences, University of Granada, Granada, Spain;
6 GENUD “Growth, Exercise, NUtrition and Development” Research Group, University of Zaragoza, Zaragoza, Spain;
7 Department of Physiology, School of Pharmacy, University of Granada, Granada, Spain;
8 Department of Physiotherapy, Health Sciences Center, Federal University of Paraiba (UFPB), João Pessoa, Paraíba, Brazil;
9 Faculty of Health and Sport Science (FCSD), Department of Physiotherapy and Nursing, University of Zaragoza, Huesca, Spain


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AIM: The purpose of the present study was to analyze the association between isokinetic strength and field-based muscular fitness tests in youth.
METHODS: 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.
RESULTS: 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).
CONCLUSION: 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.

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artero@ugr.es