Reader TTS

BACKGROUND: Time constraints comprise one limiting factor for implementing school-based physical activity programs. The aim of this pilot cluster randomized controlled study was to explore

the effects of a cycle ergometer intervention during regular lessons on physical fitness, body composition, and health-related blood parameters. METHODS: Participants attended one of 2

classes selected from one school, which were randomly assigned to an intervention group (n = 23, 11.2 [0.5] y) consisting of cycling on classroom-based ergometers during 3 lessons per week

at a self-selected intensity and a control group (n = 21, 11.3 [0.5] y) not receiving any treatment. Prior to and after the 5-month intervention period, physical fitness (with ventilatory

threshold as primary outcome), body composition, and parameters of glucose and lipid metabolism were assessed. RESULTS: A significant time × group interaction was revealed for ventilatory

threshold (P = .035), respiratory compensation point (P = .038), gross efficiency (P < .001), maximal aerobic power (P = .024), triglycerides (P = .041), and blood glucose levels (P =

.041) with benefits for the intervention group. Peak oxygen uptake and body composition were not affected. CONCLUSIONS: Children's aerobic capacity benefited from the low-intensity

school-based cycling intervention, while body composition and most blood parameters were not affected. The intervention using cycle ergometers is a feasible and time-saving strategy to

elevate submaximal physical fitness. KEYWORDS: aerobic physical fitness; bike desks; cycling; peak oxygen uptake; school based.