Abstract
Background: Reduced exercise capacity is well documented in survivors of ARDS. However it is unclear if survivors of ARDS engage in less physical activity (PA) or more sedentary behaviour (SB) when compared with healthy controls.
Objective: In survivors of ARDS, to describe the proportion of waking hours spent in PA and SB, and compare these data with healthy age and sex matched adults.
Methods: Ten survivors of ARDS were recruited during their intensive care stay. Six weeks following discharge from hospital, participants wore a portable metabolic monitor (BodyMedia Sensewear®) for 7 days during waking hours. Data were compared with that collected in 13 healthy participants.
Results: The ARDS and healthy participants were similar in age (med[IQR]) (50[24] vs 51[10]yr) and sex (50% vs 38% males). The proportion of waking hours spent in SB, light, moderate and vigorous PA is described in table 1. The ARDS participants accumulated the majority of the SB time in uninterrupted bouts of≥ 30mins (51[23]%) and the majority of the combined moderate and vigorous PA time in short bouts of 0-10mins (86[27]%]. Both accumulated times were significantly greater in the ARDS group than in the healthy group, which were 37[29]% (p=0.032) and 70[23]% (p=0.016) respectively.
ARDS | Healthy | |
SB (0.7 to 1.4 METS) | 72[17] | 58[23]* |
Light PA (1.5 to 2.9 METS) | 20[18] | 21[10] |
Moderate PA (3.0 to 5.9 METS) | 5[11] | 16[20]* |
Vigorous PA (≥6.0 METS) | 0.0[0.1] | 0.5[1.5]* |
Table 1. METS: metabolic equievalents. All values are % of waking hours (med[IQR]). * p<0.05.
Conclusion: Survivors of ARDS spend more time in SB and less time in moderate and vigorous PA when compared with a similar healthy cohort.
Financial support: Intensive Care Foundation, Australia.
- Copyright ©ERS 2015