@article {Van Remoortelp281, author = {Hans Van Remoortel and Miek Hornikx and Kristien De Bent and Erica Balligand and Chris Burtin and Daniel Langer and Rik Gosselink and Marc Decramer and Wim Janssens and Thierry Troosters}, title = {Physical activity and its relation with exercise capacity in patients with early COPD}, volume = {38}, number = {Suppl 55}, elocation-id = {p281}, year = {2011}, publisher = {European Respiratory Society}, abstract = {Background: Physical activity (PA) and exercise capacity are reduced in patients with severe COPD. We aimed to assess PA and its relation with exercise capacity in mild COPD.Methods: We assessed PA (SenseWear Armband) for 7 days (reported as the average number of steps (PAsteps) and the time spent in moderate PA (\> 3METs, PAmod)) in 123 (ex-)smokers (49 with COPD; 33 GOLD I and 16 GOLD II) and 55 non-smokers. Exercise capacity was determined by VO2max and six minute walking distance (6MWD).Results: Group characteristics are given in table1. PA was significantly correlated (p\<0.0001) with 6MWD (r=0.37 and r=0.27 with PAsteps and PAmod, respectively) and VO2max (r=0.39 and r=0.35 with PAsteps and PAmod, respectively).Stepwise multiple regression analysis showed that PAsteps is determined by age (R2=0.17), 6MWT (R2=0.09), season of PA assessment (1=summer/spring/autumn, R2=0.02) and diagnosis of COPD (R2=0.02; total R2=0.30). PAmod is determined by season (R2=0.12), age (R2=0.05), 6MWD (R2=0.04), gender (R2=0.02) and COPD (R2=0.02; total R2=0.25).View this table:Table 1. Group characteristicsConclusion: PA is reduced in patients with mild COPD. Age, season of PA assessment and 6MWD are predictors of PA.}, issn = {0903-1936}, URL = {https://erj.ersjournals.com/content/38/Suppl_55/p281}, eprint = {https://erj.ersjournals.com/content}, journal = {European Respiratory Journal} }