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Development and Validation of a 49-Item Sports Nutrition Knowledge Instrument (49-SNKI) for Adult Athletes

Karpinski, Christine A. PhD, RD, CSSD, LDN; Dolins, Karen Reznik EdD, RDN, CSSD, CDN; Bachman, Jessica PhD, RDN

doi: 10.1097/TIN.0000000000000180
Diet, Sports, and Adult Athletes

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 (

The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article.

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