RT Journal Article
SR Electronic
T1 Activity monitoring in pulmonary rehabilitation in patients with COPD
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP p3003
VO 38
IS Suppl 55
A1 Janos Varga
A1 Krisztián Aranyász
A1 Attila Somfay
YR 2011
UL http://erj.ersjournals.com/content/38/Suppl_55/p3003.abstract
AB Introduction: The quality of life and the risk of hospitalization are partially related to the activity level of patients with COPD. The effectiveness of pulmonary rehabilitation can be characterized by exercise physiologic variables and daily activity.Methods: 12 patients with COPD (FEV1: 55±17%pred, age: 60±9 year, BMI: 21±4 kg/m2) performed 30-minute high intensity cycling 3 times per week for 8 weeks supervised by physiotherapists. Exercise physiologic variables and 12-hour daytime activity monitoring (Dynaport MiniMode, McRoberts BV) were measured before and after rehabilitation.Results: None of the patients was hospitalized in this rehabilitation period. There was no change in maximal exercise capacity (WRmax: 75±17 vs. 82±21 Watt), but oxygen uptake (VO2:1,06±0,33 vs. 1,32±0,08 L/min.; p<0,05) and lactate threshold (LAT: 0,68±0,18 vs. 0,88±0,20 L/min.; p<0,05) improved significantly. Patients with COPD were more active after rehabilitation (lying: 26±16 vs. 12±11%; locomotion: 7±5 vs. 14±3%, p<0,05). Energy expenditure was reduced at rest after rehabilitation (lying: 22634±15352 vs. 12736±16514 Watt, p<0,05). Step counts improved significantly (3257±2267 vs. 5688±2920, p<0,05). The time of locomotion modestly correlated with post-rehab WRmax (r2=0,40, p<0,05) and FEV1 (%pred) (r2=0,25, p<0,05).Conclusion: Activity monitoring contributes to the complex evaluation of rehabilitative interventions. Compared to maximal exercise capacity, change in activity level proved to be more sensitive to detect improvement in the status of COPD patients in this pilot study.