English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Background . This study investigated respiratory gas exchanges and heart rate (HR) kinetics during early-phase recovery after a maximal cardiopulmonary exercise test (CPET) in patients with chronic obstructive pulmonary disease (COPD) grouped according to airflow limitation.  Methods . Thirty control individuals (control group: CG) and 81 COPD patients (45 with “mild” or “moderate” airflow limitation, COPD I-II , versus 36 with “severe” or “very severe” COPD, COPD III-IV ) performed a maximal CPET. The first 3 min of recovery kinetics was investigated for oxygen uptake (V   ˙O 2 ), minute ventilation (V   ˙E), respiratory equivalence, and HR. The time forV   ˙O 2  to reach 25% (T 1/4V   ˙O 2 ) of peak value was also determined and compared.  Results . TheV   ˙O 2 ,V   ˙E, and HR recovery kinetics were significantly slower in both COPD groups than CG ( p  < 0.05). Moreover, COPD III-IV  group had significantly higherV   ˙O 2  andV   ˙Eduring recovery than COPD I-II  group ( p  < 0.05). T 1/4V   ˙O 2  significantly differed between groups ( p  < 0.01; 58 ± 18 s in CG, 79 ± 26 s in COPD I-II  group, and 121 ± 34 s in COPD III-IV ) and was significantly correlated with forced expiratory volume in one second in COPD patients ( p  < 0.001,  r  = 0.53) and with peak power output ( p  < 0.001,  r  = 0.59).  Conclusion . The COPD groups showed slower kinetics in the early recovery period than CG, and the kinetics varied with severity of airflow obstruction.

pulmonary medicine

Early-Phase Recovery of Cardiorespiratory Measurements after Maximal Cardiopulmonary Exercise Testing in Patients with Chronic Obstructive Pulmonary Disease