Increased fatigability and impaired skeletal muscle microvascular reactivity in adults with obstructive sleep apnea: a cross-sectional study

Table 4 10MWT variables and fatigability between OSA and non-OSA groups

Variable	OSA	Non-OSA	p value
Distance in first 2.5 min (m)	220.5 ± 14.6	278.5 ± 22.3	0.001*
Total distance in 10 min (m)	777.5 ± 48.3	1095.6 ± 83	0.001*
Mean speed in first 2.5 min (m/s)	1.47 ± 0.1	1.86 ± 0.15	0.001*
Mean speed in 10 min (m/s)	1.3 ± 0.08	1.83 ± 0.14	0.001*
Fractional change in speed	0.88 ± 0.05	0.98 ± 0.01	0.001*
Post 10MWT perceived tiredness score	4.69 ± 0.85	3.00 ± 0.91	0.003*
Perceived fatigability index	6.03 ± 1.01	2.77 ± 0.92	0.001*
Performance fatigability Index	1.14 ± 0.08	0.9 ± 0.07	0.001*

All values are expressed as mean ± standard deviation; age, sex, race/ethnicity, body mass index, sleep duration and level of physical activity are the covariates for ANCOVA analysis; m = meters; fractional change = speed in 10 min divided by speed in 2.5 min; 10MWT = 10-min walk test; perceived fatigability = post 10MWT perceived tiredness score divided by total distance walked in 10 min; performance fatigability = fractional change in speed divided by total distance walked in 10 min
*Significant difference (p < 0.05)

ISSN: 2047-783X