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. 2020 Apr 20;20:174. doi: 10.1186/s12887-020-02069-x

Table 7.

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

Measure	Baseline	12-weeks
Measure	Mean ± SD or Median (IQR)^c		p-value
Test duration (min:sec)	19:41 ± 2:00	19:52 ± 01:09	0.63
VO₂peak (absolute, ml/min)	1922 ± 469	2018 ± 468	0.06
VO₂peak time (min:sec)	19:13 ± 02:06	19:32 ± 01:12	0.38
HR exercise start (bpm)	110 ± 14	111 ± 11	0.93
HRmax (bpm)	201 (192–205)	198 (192–203)	0.58
HRmax test time (min:sec)	19:19 ± 02:05	19:28 ± 01:05	0.67
^aMFO (kcal/min)	2.7 ± 1.0	2.4 ± 0.9	0.12
^bMFO time (1 min interval)	13 (11–15)	12 (10–17)	0.76

HRmax maximum recorded heart rate, MFO maximum fat oxidation

^aMFO data for n = 23 due to errors in one participant testing

^bMFO time represents the 1-min interval in the testing period at which peak fat oxidation occurred

^cNon-parametric data