Integrating interval jump rope exercise into a school setting improve body composition, cardiorespiratory fitness and glycolipid metabolism parameters in adolescents with overweight and obesity: a randomized controlled trial.

Childhood obesity carries known cardiovascular risks, and schools are often proposed as a practical setting for exercise interventions, but evidence on simple tools like jump rope in this context has been limited. This trial tested whether adding 12 weeks of interval jump rope training, in either a shorter or longer work-interval format, to physical education classes could improve body composition, fitness, and metabolic markers in adolescents with overweight or obesity, compared with a no-training control group. Both jump rope groups showed improvements in body mass, body mass index, body fat percentage, cardiorespiratory fitness, fasting blood glucose, fasting insulin, and triglycerides relative to control. The longer-interval group showed a larger reduction in body mass and body mass index than the shorter-interval group, and only that group showed a drop in LDL cholesterol.

No significant differences between the two exercise formats were found for fitness or most metabolic measures. The trial was randomized and controlled, which strengthens confidence in the findings, but it involved a modest number of participants and a relatively short follow-up, so how durable these changes are remains unclear.

If you're a parent or clinician wondering whether something as simple as jump rope could help an adolescent with excess weight, this study offers some relevant information. Researchers randomly assigned young people aged 10 to 13 with overweight or obesity into three groups: two types of jump rope training added to their regular school PE classes, done three times a week for 12 weeks, or no extra training at all. Both jump rope groups saw improvements compared to the no-training group, including lower body weight and body mass index, less body fat, better fitness, and improved blood sugar, insulin, and triglyceride levels.

One version of the jump rope program, using longer work intervals, showed a bigger drop in body weight and body mass index than the shorter version, and it was the only group where cholesterol also improved. This was a controlled trial, which is a stronger type of study, but it was still fairly small and lasted only 12 weeks. It doesn't tell us whether these benefits would last longer or apply beyond this specific age group and setting.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This randomized controlled trial (n=120, allocated 40 per group: JRE-1 short-interval, JRE-2 long-interval, and no-training control) evaluated a 12-week school-based interval jump rope program embedded in physical education classes for adolescents aged 10 to 13 with overweight or obesity (mean BMI 24.7 kg/m2). Repeated-measures ANOVA assessed within- and between-group changes in body composition, cardiorespiratory fitness, and glycolipid metabolism. Both exercise groups showed significant improvements versus control in body mass, BMI, body fat percentage, cardiorespiratory fitness, fasting blood glucose, fasting insulin, and triglycerides (P<0.05).

Between the two exercise formats, JRE-2 produced greater reductions in body mass and BMI than JRE-1 (mean difference -1.92 kg and -0.72 kg/m2 respectively, P<0.01), and only JRE-2 showed a significant LDL-C reduction (-2.20 mmol/L, P<0.05). No significant between-group differences emerged for cardiorespiratory fitness or most glycolipid variables when comparing the two active interventions directly. Strengths include randomization and a controlled comparator, supporting causal inference for the exercise-versus-control comparisons.

Limitations include the modest sample size, single 12-week timeframe without longer follow-up, and the abstract does not report adherence, blinding procedures, or adverse events, all of which constrain generalizability and durability claims.