The purpose of this project was to develop and validate an instrument to assess the sports nutrition knowledge of adult athletes. An evidence-based, mixed-methods process was employed to establish face/content validity (expert review), construct validity, (Independent t test and Mann-Whitney U test), internal consistency (Cronbach α), and test-retest reliability (Pearson ρ). Results confirmed content and construct validity (mean total score for registered dietitian nutritionists compared with the athletes 38.5 ± 5.3 vs 15.9 ± 9.2; P < .001), internal consistency (0.843), and reliability (r = 0.951; P < .001). The 49-item Sports Nutrition Knowledge Instrument (49-SNKI) can be a valid and reliable instrument used to measure sports nutrition knowledge of adult athletes.
Department of Nutrition, West Chester University, West Chester, Pennsylvania (Dr Karpinski); Teachers College, Columbia University, New York, New York (Dr Dolins); and Nutrition Education, Stronger U Nutrition, New Windsor, New York (Dr Bachman).
Correspondence: Christine A. Karpinski, PhD, RD, CSSD, LDN, Department of Nutrition, West Chester University, 855 S New St, rm 222D, West Chester, PA 19383 (email@example.com).
The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.