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Table 6 Heart Rate (HR) data measured during exercise sessions in completers (n = 22)

From: Multidisciplinary lifestyle intervention in children and adolescents - results of the project GRIT (Growth, Resilience, Insights, Thrive) pilot study

HR MeasureWeeks 2-4aWeeks 5–8Weeks 9–12 
Mean ± SDp-value
Minimum111 ± 11110 ± 7109 ± 90.23
Maximum191 ± 8193 ± 8196 ± 90.001*
Mean147 ± 9144 ± 7146 ± 80.06
Mean % HRmax75 ± 573 ± 474 ± 50.046**
  1. HRmax, estimated maximum heart rate from baseline maximal exercise testing data
  2. aWeek 1 set up / facilitation period excluded
  3. *Significant difference in maximum recorded HR across the program (weeks 2–4 vs. 5–8, p = 0.08; weeks 2–4 vs. 9–12, p = 0.002; weeks 5–8 vs. 9–12, p = 0.02)
  4. **Significant difference in % HRmax across the program, (weeks 2–4 vs. 5–8, p = 0.002, weeks 2–4 vs. 9–12, p = 0.29; weeks 5–8 vs. 9–12, p = 0.23)