20.500.12556/RUL-134831 Effects of school-based exercise and nutrition intervention on body composition and physical fitness in overweight adolescent girls Regular exercise during school hours is encouraged since childhood obesity has reached epidemic proportions. Moreover, a great majority of adolescents do not meet the recommendations for moderate-to-vigorous physical activity. The present study aimed to determine the effects of school-based high-intensity interval training (HIIT) and nutrition intervention on body composition and physical fitness in overweight adolescent girls. Forty-eight girls were included in the study, of whom 24 (age = 15.5 ± 0.7 years) were randomized to a experimental group (EXP) (HIIT and nutrition intervention school-based program) and 24 (age = 15.7 ± 0.6 years) to a control group (CON) that maintained their usual physical education activities. HIIT consisted of 10 stations of own bodyweight exercise and was done three times per week for eight weeks. Moreover, the EXP participated in the nutrition program led by a nutritionist two times a week. Apart from body composition assessment, participants performed countermovement jump (CMJ), medicine ball throw, hand-grip test, and Yo-Yo Intermittent Recovery Level 1 Test (YYIRT1). A significant effect of group (EXP vs. CON) x time (pre vs. post) interaction was observed for weight [F(1,44) = 7.733; p = 0.008], body mass index [F(1,44) = 5.764; p = 0.020], body fat (in kg) [F(1,44) = 17.850; p < 0.001], and body fat (in %) [F(1,44) = 18.821; p < 0.001]. Moreover, a significant interaction was observed for the medicine ball throw [F(1,44) = 27.016; p < 0.001] and YYIRT1 [F(1,44) = 5.439; p = 0.024]. A significant main effect for time was found for hand grip [F(1,44) = 9.300; p = 0.004] and CMJ [F(1,44) = 12.866; p = 0.001]. The present study has demonstrated that just eight weeks school-based HIIT and nutrition intervention, including three sessions a week, can improve body composition and muscular and physical aerobic performance in overweighted adolescent girls. sport exercise diet adolescents weight status fitness šport vadba dieta mladostniki kontrola teže telesna pripravljenost true false true Angleški jezik Slovenski jezik Članek v reviji 2022-02-03 15:21:51 2022-02-03 15:21:52 2022-09-14 04:10:12 0000-00-00 00:00:00 2021 0 0 12 str. iss. 1, art. 238 Vol. 13 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 796:613.2-053.6 2072-6643 10.3390/nu13010238 48542723 RAZ_Bogataj_Spela_2021.pdf RAZ_Bogataj_Spela_2021.pdf 1 D4D0930BE0B29922C1A035AB9CF4219B 04b08b8e46d23370617d9114330051de41e2703af19a48a1692befa490252f6a c5199444-84fc-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153508 https://www.mdpi.com/2072-6643/13/1/238 1 6a861ca6-84fc-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153507 Fakulteta za šport 0 0 0