Source: International Congress 2016 – Best abstracts in physical activity and telemedicine
Disease area: Airway diseases

Abstract

Background: Conventional Pulmonary Rehabilitation (PR) programmes increase exercise capacity in COPD however; there is no evidence of clinically meaningful improvement on daily activity levels (DAL) as defined by an increase >1000 steps/day.Aim: To investigate the effect of a 12-week high-intensity interval exercise training programme on DAL in COPD.Methods: One-hundred twenty eight COPD patients (FEV₁:47±19) participated in a 12-week PR programme. Initially patients were stratified for DAL (i.e., >5000 vs <5000 steps/day) and then were randomized in 2:1 ratio into the Interval Training Group (n=85) or the Usual Care Group (n=43). DAL was assessed for 7 consecutive days prior to and following PR using a validated for this population activity monitor (Actigraph GT3X). Interval cycling training was performed 3 days/week at a mean intensity of 130±18% of baseline peak work rate for 45 min by alternating 30-s exercise intervals with 30-s rest periods.Results: Both groups were comparable at baseline in terms of factors influencing DAL. Interval training significantly increased the number of steps/day by 1094±1158. Time spent in sedentary activities was significantly reduced by 40±64 minutes/day, whilst time spent in light, lifestyle and moderate intensity of activities was significantly increased by 24±45, 9±19 and 7±11 minutes/day, respectively. In addition, interval training induced an increase over usual care of 1475±1358 steps/day following PR.Conclusions: High-intensity interval exercise training induces clinically meaningful and significant effects on amount and intensity of DAL in patients with COPD.Funded by the Innovative Medicine Initiative Joint Undertaking (IMI JU# 115011).


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Zafeiris Louvaris (Agia Paraskevi, Attica, Greece), Zafeiris Louvaris, Stavroula Spetsioti, Eleni A. Kortianou, Maroula Vasilopoulou, Ioannis Nasis, George Kaltsakas, Nikolaos G. Kolouris, Ioannis Vogiatzis. Aerobic interval training induces clinically meaningful effects in daily physical activity in COPD. Eur Respir J 2016; 48: Suppl. 60, 2053

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