Effects of two forms of school-based high-intensity interval training on body fat, blood pressure, and cardiorespiratory fitness in adolescents: randomized control trial with eight-week follow-up—the PEER-HEART study DOI Creative Commons
Jarosław Domaradzki, Marek Popowczak, Katarzyna Kochan

et al.

Frontiers in Physiology, Journal Year: 2025, Volume and Issue: 16

Published: April 8, 2025

This study examined the effects of 8-week interventions based on two variants typical exercises, namely, high-intensity interval training (HIIT) and plyometric (HIPT), body fat (BF%), blood pressure, cardiorespiratory fitness (CRF). In addition, sustainability after another 8 weeks was assessed. The project designed as a randomized controlled trial with eight groups participants (two variants, sexes, (experimental control)) conducted in school physical education (PE) program. outcomes analyzed were BF%, systolic (SBP), diastolic pressure (DBP), CRF expressed terms maximum oxygen uptake (VO2max). A total 307 healthy adolescents participated this randomly assigned into groups. During weeks, completed exercise sessions each week progressively increasing volumes. For first 2 involved four rounds 20 s intense effort followed by 10 rest; increased to six during 3-4 5-8. HIPT program whereas HIIT bodyweight resistance exercises. Multidimensional analysis variance (ANOVA) indicated statistically significant second-order interaction (time × variant group: Ʌ = 0.943, F 2.20, p < 0.027, η2 pG 0.057, d 0.25), confirming changes SBP, DBP, VO2max dependent type intervention group assignment. ANOVA results revealed main for time contributors (BF%: 3.911, 0.023, 0.001, 0.04 vs. 9.900, 0.03; SBP: 31.801, 0.012, 0.16 8.939, 0.003, η 0.026, 0.16; DBP: 3.470, 0.033, 0.002, 0.06 4.982, 0.014, 0.12). sex 6.960, 0.05) that improvements over not related variant. Although these small (low eta values), post hoc tests (all comparisons post-intervention, > showed both exhibited beneficial compared controls; however, no differences observed between experimental control Furthermore, maintained through follow-up period, demonstrated post-intervention measurements (p 0.05). Discriminant BF% SBP key variables men, yielding greater reductions resulting more pronounced decreases BF%. conclusion, effectively improved health-related parameters, providing valuable enrichment PE lessons schools. These benefits also sustained at least post-intervention.

Language: Английский

Effects of two forms of school-based high-intensity interval training on body fat, blood pressure, and cardiorespiratory fitness in adolescents: randomized control trial with eight-week follow-up—the PEER-HEART study DOI Creative Commons
Jarosław Domaradzki, Marek Popowczak, Katarzyna Kochan

et al.

Frontiers in Physiology, Journal Year: 2025, Volume and Issue: 16

Published: April 8, 2025

This study examined the effects of 8-week interventions based on two variants typical exercises, namely, high-intensity interval training (HIIT) and plyometric (HIPT), body fat (BF%), blood pressure, cardiorespiratory fitness (CRF). In addition, sustainability after another 8 weeks was assessed. The project designed as a randomized controlled trial with eight groups participants (two variants, sexes, (experimental control)) conducted in school physical education (PE) program. outcomes analyzed were BF%, systolic (SBP), diastolic pressure (DBP), CRF expressed terms maximum oxygen uptake (VO2max). A total 307 healthy adolescents participated this randomly assigned into groups. During weeks, completed exercise sessions each week progressively increasing volumes. For first 2 involved four rounds 20 s intense effort followed by 10 rest; increased to six during 3-4 5-8. HIPT program whereas HIIT bodyweight resistance exercises. Multidimensional analysis variance (ANOVA) indicated statistically significant second-order interaction (time × variant group: Ʌ = 0.943, F 2.20, p < 0.027, η2 pG 0.057, d 0.25), confirming changes SBP, DBP, VO2max dependent type intervention group assignment. ANOVA results revealed main for time contributors (BF%: 3.911, 0.023, 0.001, 0.04 vs. 9.900, 0.03; SBP: 31.801, 0.012, 0.16 8.939, 0.003, η 0.026, 0.16; DBP: 3.470, 0.033, 0.002, 0.06 4.982, 0.014, 0.12). sex 6.960, 0.05) that improvements over not related variant. Although these small (low eta values), post hoc tests (all comparisons post-intervention, > showed both exhibited beneficial compared controls; however, no differences observed between experimental control Furthermore, maintained through follow-up period, demonstrated post-intervention measurements (p 0.05). Discriminant BF% SBP key variables men, yielding greater reductions resulting more pronounced decreases BF%. conclusion, effectively improved health-related parameters, providing valuable enrichment PE lessons schools. These benefits also sustained at least post-intervention.

Language: Английский

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