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Article Abstract
Objectives: To evaluate the effects of a 10-week thrice-weekly FIT FIRST Teen (FFT) intervention on cardiorespiratory fitness in Danish 12-15-years-olds.
Design: A cluster-randomised controlled study.
Participants: One thousand four hundred and seventeen Danish pupils (51.1% female) from 15 municipal schools, allocated to an intervention group (FFT: = 994, 13.5 (0.6) years (mean (SD)), 165.8 (8.7) cm, 57.8 (13.4) kg) or a usual practice control group (CON: = 423, 13.8 (0.8) years, 167.7 (11.5) cm, 58.6 (12.2) kg).
Methods: The FFT group completed three weekly 40-min FFT sessions with modified, motivating, involving, high-intensity sports-based activities. Before and after the 10-wk intervention period resting heart rate and blood pressure, body composition, postural balance, standing long jump and performance on the Yo-Yo intermittent recovery level 1 children's test (YYIR1C) were measured. Group effects for all outcome variables were tested using multi-level linear mixed models.
Results: The group effect analyses showed no significant differences between FFT and CON in the YYIR1C test ( = 0.080). A significant small difference between groups was found in resting heart rate ( = 0.29, = 0.039) in favour of FFT. No significant between-group differences were observed in body composition, or the remaining cardiovascular or physical fitness variables ().
Conclusion: The lack of significant effects for the majority of the outcome measures calls for further development and long-term testing of the programme.
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| http://dx.doi.org/10.1080/02640414.2025.2505380 | DOI Listing |
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