Abstract
This study assessed the influence of an 8-week high-intensity functional training (HIFT), based on bodyweight resistance exercises, within physical education classes, on body composition and physical performance in 116 adolescent males aged 15-18. The participants were divided due to calendar age into experimental (EXP) and control (CON) groups. Using the InBody device, measurements of body height, weight, muscle, and fat mass were taken. Body Mass Index (BMI), Fat Mass Index (FMI), and Skeletal Muscle Mass Index (SMI) were calculated. Muscle strength was assessed via hand grip (HG), power through standing broad jump (SBJ), flexibility using the sit-and-reach test (SRT), and endurance via the beep test (BT). The intervention started with two circuits performed in two lessons per week gradually increasing in volume (one circuit added after every two week). The participants performed in every 20 seconds as many reps as possible following exercises: push-ups, abs crunches, squats, lunges, burpees, with a 60-second rest between circuits. The changes after HIFT were analyzed with two-way ANOVA and Bonferroni post-hoc tests. The analysis reveal significant positive changes in all parameters post-HIFT (p<0.05), except for BMI and flexibility. Age category was significant for FMI and HG (p<0.05), and interactions between condition and age category were observed for HG and SBJ (p<0.05). This research showed the effectiveness of introducing HIFT to induce favorable adaptations in body morphology and physical performance among male adolescents. These results provide insights for teachers considering the implementation of bodyweight interventions based on the HIFT concept during physical education classes.
Presenters
Dawid KoźleniaAdiunct, Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Dolnoslaskie, Poland Marek Popowczak
Associate Professor , Department of Team Sports, Wroclaw University of Health and Sport Sciences, Poland Cristian Alvarez
Faculty, Rehabilitation, Universidad Andres Bello, Bío-Bío, Chile Jarosław Domaradzki
Professor in Biostructer Unit, vice-dean of the Faculty, Physical Education and Sport, Wroclaw University of Health and Sport Sciences, Poland
Details
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KEYWORDS
Secondary School; Physical Education; Body Composition; Physical Performance; HIFT
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