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Table 3 Differences from baseline to 6 months between training and control group for six minute walk test, spiroergometry, St. George’s Respiratory Questionnaire score, and Short Form-12 questionnaire score

From: Low intensity, long-term outpatient rehabilitation in COPD: a randomised controlled trial

  Complete study population (n = 81)
Between group difference (training minus control group) 95% confidence interval p
6MWT (m) 59 28 to 89 0.0002
Workpeak (Watt) 7.4 0.5 to 13.4 0.04
VO2peak (l/min) 0.189 0.035 to 0.323 0.02
CPET time (min) 1.7 0.04 to 2.8 0.02
Peak heart rate during CPET (1/min) 4 −2 to 8 n.s.
SF-12 PCS 0.6 −4.1 to 5.2 n.s.
SF-12 MCS 3.0 −3.5 to 9.5 n.s.
SGRQ symptoms −3 −6 to 12 n.s.
SGRQ activity −6 −11 to −1 0.03
SGRQ impact −8 −14 to −2 0.01
SGRQ total −5 −10 to −1 0.01
  1. 6MWT: Six minute walk test; CPET: cardiopulmonary exercise testing; MCS: Mental health component summary score; PCS: Physical component summary score; SF-12: Short form 12 quality of life questionnaire; SGRQ: St. George’s Respiratory Questionnaire.