Key result
Delayed 1-minute heart rate recovery in COPD subjects was associated with shorter 6-minute walk distance (435m vs 477m, P=0.01) and increased sedentary time (472 vs 394 min, P=0.002).
Why the study?
Does delayed 1-min heart rate recovery after the 6MWT correlate with worse physical activity patterns and functional status in subjects with COPD?
Observational (n=145)
Does delayed 1-min heart rate recovery after the 6MWT correlate with worse physical activity patterns and functional status in subjects with COPD?
Absolute Event Rate: 435% vs 477%
p-value: p=.01
In patients with COPD, delayed 1-minute heart rate recovery after a 6-minute walk test is associated with reduced exercise capacity, increased sedentary time, and worse functional status.
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Hypothesis-generating in COPD; leaves open whether heart rate recovery predicts outcomes or guides interventions.
Morita et al. (2018) conducted an observational in COPD (n=145). Delayed 1-min heart rate recovery (≤ 12 beats/min) vs. Normal heart rate recovery (> 12 beats/min) was evaluated on 6-minute walk test distance (meters) (p=.01). Delayed 1-minute heart rate recovery in COPD subjects was associated with shorter 6-minute walk distance (435m vs 477m, P=0.01) and increased sedentary time (472 vs 394 min, P=0.002).
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