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.
These findings support the feasibility and potential effectiveness of HIIT for weight loss and body composition changes in obese postmenopausal women, and indicate that additional investigation of this approach is warranted to reduce postmenopausal chronic disease risk.
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