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Table 7 Maximal graded cardiorespiratory test outcomes in GRIT program completers (n = 24)

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

MeasureBaseline12-weeks 
Mean ± SD or Median (IQR)cp-value
Test duration (min:sec)19:41 ± 2:0019:52 ± 01:090.63
VO2peak (absolute, ml/min)1922 ± 4692018 ± 4680.06
VO2peak time (min:sec)19:13 ± 02:0619:32 ± 01:120.38
HR exercise start (bpm)110 ± 14111 ± 110.93
HRmax (bpm)201 (192–205)198 (192–203)0.58
HRmax test time (min:sec)19:19 ± 02:0519:28 ± 01:050.67
aMFO (kcal/min)2.7 ± 1.02.4 ± 0.90.12
bMFO time (1 min interval)13 (11–15)12 (10–17)0.76
  1. HRmax maximum recorded heart rate, MFO maximum fat oxidation
  2. aMFO data for n = 23 due to errors in one participant testing
  3. bMFO time represents the 1-min interval in the testing period at which peak fat oxidation occurred
  4. cNon-parametric data