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Table 2 Mean (SD) of groups, mean (SD) difference within groups, mean (95% CI) difference between groups for exercise capacity immediately following intervention

From: Exercise training for asbestos-related and other dust-related respiratory diseases: a randomised controlled trial

 

Group

Difference within group

Difference between groups

 

Week 0

Week 8

Week 8 minus week 0

Week 8 minus week 0

ANCOVA

 

Mean (SD)

Mean (SD)

Mean (SD)

Mean difference (95% CI)

p Value

6MWT

EG

CG

EG

CG

EG

CG

  

n = 18

n = 17

n = 17

n = 17

n = 17

n = 17

6MWD, m

475 (79)

469 (81)

548 (72)

489 (83)

73 (29)

20 (32)

53 (32 to 74)

<0.0001*

ICT

EG

CG

EG

CG

EG

CG

  

n = 18

n = 17

n = 16

n = 17

n = 16

n = 17

Peak work rate, W

108 (41)

110 (33)

116 (43)

107 (30)

8 (7)

-4 (12)

12 (5 to 19)

0.002*

VO2peak, L/min

1.6 (0.5)

1.6 (0.4)

1.6 (0.5)

1.6 (0.4)

0.1 (0.1)

0.1 (0.3)

-0.01 (-0.16, 0.14)

0.882

VEpeak, L/min

56 (21)

55 (12)

59 (24)

55 (13)

3 (7)

0.3 (11)

2.84 (-4.13, 9.80)

0.412

HR at peak work rate, bpm

121 (22)

123 (13)

120 (23)

126 (12)

-0.5 (8)

3 (11)

-4 (-11, 3)

0.238

VE at isowork, L/min

56 (21)

52 (12)

55 (24)

53 (13)

-0.6 (5)

1.3 (8)

-2 (-7, 3)

0.411

HR at isowork, bpm

121 (22)

119 (11)

117 (21)

122 (13)

-4 (9)

3 (8)

-7 (-13, -0.3)

0.040*

Borg dyspnoea at isowork

4 (2)

3(2)

4(2)

4(2)

0 (2)

1 (2)

-0.5 (-1.6, 0.6)

0.366

RPE at isowork

4 (3)

4 (2)

4 (2)

5 (2)

-0.4 (2)

0.2 (2)

-0.5 (-1.6, 0.5)

0.315

ECT

EG

CG

EG

CG

EG

CG

  

n = 18

n = 17

n = 16

n = 17

n = 16

n = 17

Endurance cycle time, seconds

319 (130)

311 (80)

534 (268)

308 (113)

216 (254)

-3 (113)

222 (84, 360)

0.003*

VE at isotime, L/min

51 (15)

53 (13)

50 (15)

52 (12)

-0.1 (5)

-1 (10)

0.6 (-5, 6)

0.824

Borg dyspnoea at isotime

5 (2)

3 (2)

3 (2)

4 (2)

-1 (2)

1 (2)

-1.2 (-2.3, -0.04)

0.043*

Borg dyspnoea at test end

5 (3)

4 (2)

5 (2)

5 (2)

-0.2 (1)

1 (2)

-1.1 (-2.3, 0.1)

0.076

RPE at isotime

5 (3)

5 (2)

4 (3)

5 (2)

-1 (2)

-0.3 (2)

-0.9 (-2.2, 0.3)

0.148

  1. SD = standard deviation; CI = confidence interval; ANCOVA = analysis of covariance; 6MWT = six minute walk test; EG = exercise training group; CG = control group; n = number; 6MWD = six minute walk distance; m = metre; ICT = incremental cycle test; W = watts; VO2peak = peak oxygen uptake; L/min = litres per minute; VEpeak = minute ventilation at peak work rate; HR = heart rate; bpm = beats per minute; VE = minute ventilation; RPE = rate of perceived exertion; ECT = endurance cycle test; *p <0.05.