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

Table 1

Mean ± standard deviation of anthropometric and spirometric data and physiological data measured at voluntary exhaustion according to groups.

Variables	Control group (n = 30)	group (n = 45)	group (n = 36)	All participants (n = 111)
Age (y)
BMI (kg⋅m^−2)
FEV1 (L)
FEV1 (%)
FVC (L)
FVC (%)
FEV1/FVC (%)
IC/TLC (%)
DLCO (mmol⋅kPa^−1⋅min^−1)
O2peak (L⋅min^−1)
peak (L⋅min^−1)
HRpeak (bpm)

COPD: chronic obstructive pulmonary disease; : sample size; BMI: body mass index; FEV₁: forced expiratory volume in 1 second; FVC: forced vital capacity; IC: inspiratory capacity; TLC: total lung capacity; DLCO: diffusing capacity of the lungs for carbon monoxide; O₂peak: peak oxygen uptake; peak: peak minute ventilation; HRpeak: peak heart rate. Significantly different from control group (). Significantly different from group ().