Effect of the intake of high or low glycemic index high carbohydrate-meals on athletes' sleep quality in pre-game nights

Autor(es)

Daniel, Natalia V. S. ^[1] ; Zimberg, Iona Z. ^[2] ; Estadella, Debora ^[3] ; Garcia, Marcia C. ^[3] ; Padovani, Ricardo C. ^[4] ; Juzwiak, Claudia R. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo UNIFESP, Postgrad Interdisciplinar Ciencias Saude, Av Ana Costa 95, BR-11060001 Santos, SP - Brazil

^[2] Monash Univ, Sch Publ Hlth & Prevent Med, Wellington Rd, Melbourne, Vic 3800 - Australia

^[3] Univ Fed Sao Paulo UNIFESP, Dept Biociencias, Rua Silva Jardim 136, BR-11015020 Santos, SP - Brazil

^[4] Univ Fed Sao Paulo UNIFESP, Dept Saude Educ & Soc, Rua Silva Jardim 136, BR-11015020 Santos, SP - Brazil

^[5] Univ Fed Sao Paulo UNIFESP, Dept Ciencias Movimento Humano, Rua Silva Jardim 136, BR-11015020 Santos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Anais da Academia Brasileira de Ciências; v. 91, n. 1 2019.
• Citações Web of Science: 0

Resumo

This study investigated the effect of the intake of high (HGI) or low glycemic index (LGI) high-carbohydrate meals on athletes' sleep. Nine basketball adult male athletes were assessed during a championship and received high-carbohydrate meals (dinner and evening snack) with HGI or LGI. Quantitative and qualitative sleep variables were assessed: sleep latency (LAT), sleep efficiency (EFIC), Wake After Sleep Onset (WASO), sleep time through actigraphy and sleep diary. Dietary intake, satiety, sleepiness, glycemic response, salivary cortisol and melatonin were also assessed. On both days most athletes had LAT and WASO higher than recommendation, and nocturnal sleep time below the recommendations. There was no difference between sleep and hormonal parameters according to GI dietary manipulations; however, correlations were observed between sleep and diet. Daily energy intake had negative correlation with efficiency and nocturnal total sleep time, and a positive correlation with WASO, regardless of the GI nocturnal meals. No differences were observed in salivary cortisol and melatonin according to GI. The results suggest that food intake throughout the day seems to exert more influence on sleep parameters of basketball players than GI manipulation of evening meals on the pre-night game, but further studies are necessary to better understand this complex relationship. (AU)

• Processo FAPESP: 14/14276-0 - Efeito agudo do consumo de refeição com alto ou baixo índice glicêmico na qualidade do sono, ansiedade e humor de indivíduos treinados
• Beneficiário: Claudia Ridel Juzwiak
• Modalidade de apoio: Auxílio à Pesquisa - Regular