Table 2 Handgrip strength, walked distance and hemodynamic responses in the six-minute walk test.

From: Impact of obstructive sleep apnea on functional performance and muscle quality of patients with COPD

 

COPD (n = 22)

COPD-OSAS (n = 22)

p value

Functional Performance

   

HGS (kgf)

30 ± 8

26 ± 5

0.03

Sarcopenia n (%)

2 (9,1)

9 (41,9)

0.01

WD (meters)

364 ± 101

300 ± 118

0.04

Hemodynamic Responses 6MWT

   

Rest

   

HR (bpm)

81 ± 15

79 ± 12

0.73

SBP (mmHg)

117 ± 11

121 ± 16

0.26

DBP (mmHg)

75 ± 7

79 ± 10

0.09

SpO2%

94 ± 2

94 ± 2

0.52

Dyspnea

0.4 (0–3)

0.6 (0–3)

0.73

Fatigue

0.3 (0–4)

0.4 (0–3)

0.82

Peak exercise

   

HR (bpm)

105 ± 17

98 ± 12

0.21

SBP (mmHg)

143 ± 20

147 ± 25

0.45

DBP (mmHg)

85 ± 10

90 ± 11

0.08

SpO2%

92 ± 3

91 ± 3

0.27

Dyspnea

3.3 (0–10)

3.7 (0–8)

0.55

Fatigue

2.5 (0–10)

2.9 (0–10)

0.60

Recovery

   

HR (bpm)

90 ± 19

88 ± 13

0.84

  1. Data expressed as means ± SD. COPD: Chronic Obstructive Pulmonary Disease; OSA: Obstructive Sleep Apnea Syndrome; HGS:Handgrip strength ; WD: walked distance; 6MWT; six-minute walk test; HR: heart rate; bpm: beats per minute; mmHg: millimeter of mercury; m: meters; SBP: systolic blood pressure; DBP diastolic blood pressure; SpO2: peripheral oxygen saturation.
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