Acute Physiological, Symptomatic and Affective Responses to Exercise Training and Relationship with Exercise Adherence in Chronic Obstructive Pulmonary Disease

摘要: Study Objectives: i) To describe and compare, in COPD patients, the acute physiological, symptomatic, affective responses to continuous training at a high intensity (CTHI), ventilatory threshold (CTVT), interval (IT); ii) examine nature degree of association between measures adherence 12-week exercise-training program; iii) investigate whether relationship is mediated or moderated by affect/vigor. Methods: Thirty-five patients (FEV1 = 60.2 ± 15.8 % predicted) underwent baseline assessments, were randomly assigned CTHI, CTVT, IT, monitored during single bout, subsequently took part program. Physiological, measured using portable system, PANAS GVA questionnaires, Borg scale; respectively. Adherence was defined as percent time spent within target heart rate range for attended sessions. Results: In comparison CTVT associated with lower levels RER, HR, RR, whereas IT higher VE, VE/MVV, greater drop SpO2. Affective state generally improved from pre- post-exercise, increases positive affect (F=9.74, p<0.001) decreases negative (F=6.43, p=0.005). The group experienced dip global mid-exercise compared CTHI (p=0.04), yet had level end-exercise alertness (p=0.01) (p=0.02). reported lowest post-exercise (p=0.04 versus p=0.02 CTVT), significantly rates (F=6.69, p=0.004). Mean exercise VO2 (r=-0.466, p=0.007) vigor (r=0.420, p=0.017) most strongly correlated adherence. moderation model supported, where (β=2.74, t (32)=2.32, p=0.03). Conclusion: Compared less physiological strain, alertness, while slightly more rates. Acute found moderate