Incongruence between Cardiorespiratory Fitness and Subjective Reports of Physical Activity in Multiple Sclerosis: A Focus on Sex Differences

Table 4

Comparison of participant characteristics, self-reported physical activity, and cardiorespiratory fitness for regression equation derivation and validation groups.

Variable	Derivation group ()	Validation group ()	Test statistic	value	Effect size (95% CI)
Participant characteristics
Age (years) (mean (SD))	45.8 (10.4)	48.8 (9.8)		.094	(-0.71 to +0.56), small
Sex ( (%))	Female 34 (68.0); Male 16 (32.0)	Female 43 (75.4); Male 14 (24.6)		.393	(-0.53 to +0.32), trivial
Body mass (kg) (median (range))	80.3 (48.0-122.2)	76.7 (52.2-118.3)		.604	(-0.14 to +0.24), trivial
Height (m) (mean (SD))	1.70 (0.09)	1.69 (0.08)		.517	(-0.25 to +0.51), trivial
BMI (kg·m^-2) (median (range))	27.7 (17.9-40.6)	26.9 (19.7-44.5)		.626	(-0.14 to +0.24), trivial
MS type ( (%))	RRMS 44 (88.0); PMS 6 (12.0)	RRMS 51 (89.5); PMS 6 (10.5)		.810	(-0.18 to +0.15), trivial
EDSS (median (range))	1.5 (0.0-6.0)	2.0 (0.0-6.0)		.024	(0.03-0.41), small
Self-reported physical activity
MVPA (minutes) (median (range))	88.5 (0.0-270.0)	90.0 (0.0-330.1)		.913	(-0.18 to +0.20), trivial
MVPA (MET-minutes) (median (range))	420.0 (0.0-1380.0)	412.5 (0.0-1433.6)		.692	(-0.15 to +0.23), trivial
Cardiorespiratory fitness
V̇O2max (mL·kg^-1·min^-1) (mean (SD))^⁋	25.30 (7.10)	24.35 (8.23)		.526	(-0.26 to +-.50), trivial
V̇O2max (percentile) (median (range))	10 (4-95)	10 (4-90)		.685	(-0.15 to +0.23), trivial

. ^⁋The proportions of participants in the regression derivation ( (84.0%)) and validation groups ( (73.7%)) who reached true V̇O_2max were not significantly different (, ). 95% CI: 95% confidence interval; BMI: body mass index; EDSS: Expanded Disability Status Scale; MET: metabolic equivalent of task; MS: multiple sclerosis; MVPA: moderate- to vigorous-intensity physical activity; RRMS: relapsing-remitting MS; PMS: progressive MS (including primary and secondary progressive MS); V̇O_2max: maximum oxygen uptake.