Development, validity and reliability of a questionnaire designed to evaluate rapid weight loss patterns in judo players

Autor(es)

Artioli, G. G. ^[1] ; Scagliusi, F. ^[2] ; Kashiwagura, D. ^[3] ; Franchini, E. ^[3] ; Gualano, B. ^[4] ; Junior, A. L. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Phys Educ & Sport, Lab Appl Nutr, Combat Sports & Martial Arts Res Grp, Av Prof Mello Moraes, 65 Butanta, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Sch Publ Hlth, Dept Nutr, Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Sch Phys Educ & Sport, Combat Sports & Martial Arts Res Grp, Sao Paulo, SP - Brazil

^[4] Univ Sao Paulo, Sch Phys Educ & Sport, Lab Appl Nutr, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS; v. 20, n. 1, p. E177-E187, FEB 2010.
• Citações Web of Science: 25

Resumo

The aim of this study was to develop a questionnaire to evaluate rapid weight loss patterns of competitive judo players and to assess its validity and reliability. We evaluated the reliability (n=94), content validity (evaluation by 10 experts), discriminant validity (differences in scores between athletes with body weight below and above their weight class; n=100) and convergent validity (correlation with Restraint Scale; n=60). No item was considered unclear or ambiguous by more than 20% of the experts. The intraclass Coefficient Correlation was above 0.90 for all questions whose answers were parametric (P<0.001; n=94) and no significant differences were found between test and retest scores (n=94 -Wilcoxon's signed rank test). Cronbach's a was 0.98 for scores obtained between test and retest. Non-numerical questions showed proportions of agreement 480%; Spearman's Correlation between the Restraint Scale and the Rapid Weight Loss Questionnaire was 0.62 (P<0.001; n=60). Athletes below their weight class (n=50) had a significantly lower score compared with athletes above the weight class (n=50; P<0.001 - Mann-Whitney U test). In conclusion, the questionnaire showed good validity and reliability and could be used accurately to assess weight loss patterns of judo players. (AU)

• Processo FAPESP: 06/51293-4 - Estudo sobre perda rapida de peso no judo: prevalencia, magnitude e efeitos sobre o desempenho.
• Beneficiário: Guilherme Giannini Artioli
• Modalidade de apoio: Bolsas no Brasil - Mestrado