Sports nutrition knowledge, attitude, and practice questionnaire for Indian adolescent athletes—an exploratory sequential mixed-method study

To develop, validate and apply a context-specific nutrition knowledge, attitude and practice questionnaire (KAP-Q) among adolescent Indian athletes. This study used the mixed-method sequential exploratory design using qualitative and quantitative approaches on adolescent athletes (n = 170). The formative phase consisted of in-depth interviews (IDIs) with coaches (n = 10). The validation phase included testing of the internal consistency (n = 80) and test–retest reliability (n = 25), followed by the administration (n = 65) of the KAP-Q on adolescent athletes. Internal consistency was determined using Cronbach’s α, reliability using Bland–Altman plots and intra-class correlation (ICC) coefficient and the KAP-Q responses using the Chi-square test. The themes and items (> 90