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Table 2 Differences of exercise-induced dyspnoea, mood status, and health-related quality of life of COPD patients of Nordic Walking and control group over time

From: Nordic Walking improves daily physical activities in COPD: a randomised controlled trial

  baseline; mean (± SD) three month six month nine month
n = 30/group NW group control group NW group control group NW group control group NW group control group
6MWD, meters 461 (154) 436 (128) 540*‡ (159) 442 (133) 531*‡ (142) 428† (138) 519*§ (160) 422* (130)
BORG, points 4.4 (2.2) 3.9 (1.9) 3.43* (1.76) 3.72 (1.53) 3.63* (1.79) 4.23 (1.89) 3.70* (1.60) 4.32 (1.92)
HADS, anxiety, ≥7 points (n = 32) 8.8 (2.4; n = 15) 10.5 (3.6; n = 17) 6.6 *‡ (2.3) 10.2 (3.6) 7.3*‡ (2.1) 10.5 (3.8) 7.6*‡ (1.9) 10.9 (3.6)
   depression, ≥7 points (n = 27) 9.9 (3.2; n = 12) 11.3 (3.1; n = 15) 6.3*‡ (3.0) 11.6 (3.2) 6.8*‡ (3.0) 11.3 (3.3) 7.9*‡ (3.1) 11.7 (3.4)
SF 36 PCS, <50 points (n = 53) 32.2 (6.50; n = 28) 31.7 (5.79; n = 25) 42.5*‡ (9.62) 32.7 (6.39) 44.1*‡ (8.12) 30.8 (7.40) 43.6*§ (9.52) 29.9 (6.89)
   MCS, <50 points (n = 30) 42.8 (7.41; n = 14) 39.2 (9.40; n = 16) 47.2 (10.7) 41.53 (12.8) 47.4 (8.91) 40.7 (9.36) 46.3 (9.27) 38.7 (8.71)
  1. 6MWD, six minute walking distance; BORG, BORG dyspnoea score after 6MWT; HADS, Hospital Anxiety and Depression Scale; SF 36, Short Form 36; PCS, Physical Component Score; MCS, Mental Component Score; NW, Nordic Walking.
  2. Statistical comparisons within groups: * p < 0.01 compared to baseline. † p < 0.05 compared to baseline.
  3. Statistical comparison between groups (Nordic Walking vs. control): ‡ p < 0.01. § p < 0.05.
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