Acute responses to exercise training and relationship with exercise adherence in moderate chronic obstructive pulmonary disease.
The objectives of our study were to (i) compare, in chronic obstructive pulmonary disease (COPD) patients, acute responses to continuous training at high intensity (CTHI), continuous training at ventilatory threshold (CTVT) and interval training (IT); (ii) examine associations between acute responses and 12-week adherence; and (iii) investigate whether the relationship between acute responses and adherence is mediated/moderated by affect/vigour. Thirty-five COPD patients (forced expiratory volume in 1 second = 60.2 ± 15.8% predicted), underwent baseline assessments, were randomly assigned to CTHI, CTVT or IT, were monitored throughout about before training, and underwent 12 weeks of exercise training during which adherence was tracked. Compared with CTHI, CTVT was associated with lower respiratory exchange ratio, heart rate and respiratory rate (RR), while IT induced higher [Formula: see text], [Formula: see text]maximal voluntary ventilation, RR and lower pulse oxygen saturation. From pre- to post-exercise, positive affect increased (F = 9.74, p < 0.001) and negative affect decreased (F = 6.43, p = 0.005) across groups. CTVT reported greater end-exercise vigour compared to CTHI (p = 0.01) and IT (p = 0.02). IT exhibited lowest post-exercise vigour (p = 0.04 versus CTHI, p = 0.02 versus CTVT) and adherence rate (F = 6.69, p = 0.004). Mean [Formula: see text] (r = -0.466, p = 0.007) and end-exercise vigour (r = 0.420, p = 0.017) were most strongly correlated with adherence. End-exercise vigour moderated the relationship between [Formula: see text] and adherence (β = 2.74, t(32) = 2.32, p = 0.03). In summary, CTHI, CTVT and IT improved affective valence from rest to post-exercise and induced a significant 12-week exercise training effect. However, they elicited different acute physiological responses, which in turn were associated with differences in 12-week adherence to the target training intensity. This association was moderated by acute end-exercise vigour.
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Special Individualized Program, Concordia University, Montreal, Canada Department of Exercise Science, Concordia University, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada.
Amanda K
AK
Rizk
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Department of Exercise Science, Concordia University, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada.
Rima
R
Wardini
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Special Individualized Program, Concordia University, Montreal, Canada Department of Exercise Science, Concordia University, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada.
Emilie
E
Chan-Thim
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Department of Exercise Science, Concordia University, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Montreal Behavioural Medicine Centre, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada.
Simon L
SL
Bacon
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Montreal Behavioural Medicine Centre, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada Department of Psychology, Université du Québec à Montréal (UQAM), Montreal, Canada.
Kim L
KL
Lavoie
Axe maladies chroniques, Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal, Montreal, Canada Department of Exercise Science, Concordia University, Montreal, Canada Centre de réadaptation cardio-respiratoire Jean-Jacques-Gauthier, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada veronique.pepin@concordia.ca.
Véronique
V
Pepin
D000339:Affect; D000368:Aged; D015444:Exercise / Q000502:physiology* / Q000523:psychology; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D005541:Forced Expiratory Volume; D006339:Heart Rate; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010092:Oximetry; D010349:Patient Compliance / Q000523:psychology / Q000706:statistics & numerical data*; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology / Q000534:rehabilitation*; D012123:Pulmonary Ventilation; D056152:Respiratory Rate; D012720:Severity of Illness Index; D013990:Tidal Volume
Chronic obstructive pulmonary disease; affect; exercise training; patient compliance; physiology