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An Accelerometery-Based Assessment of Sitting Time in Patients with Peripheral Arterial Disease-A Cross Sectional
Marwa Said1, Wael Tawfick1, Charlotte L Edwardson2
1School of Medicine, University of Galway, Galway, Republic of Ireland; National Institute for Prevention and Cardiovascular Health (NIPC), Galway, Republic of Ireland.
Background:
This cross-sectional study aimed to measure sitting time (ST) and moderate-to-vigorous physical activity (MVPA) using accelerometry in patients with peripheral arterial disease (PAD).
Methods:
Fifty-six patients with PAD were recruited from the University Hospital Galway outpatient vascular clinic. Hospital records with an interview-based assessment documented current clinical status, including ankle-brachial index (ABI). ST and MVPA were assessed with the thigh-worn activPAL accelerometer (PAL Technologies Ltd, Glasgow, UK); worn 24 hr/day for 7 days.
Results:
Of 56 participants recruited, 43 provided valid activPAL data (8 withdrew and 5 experienced lost/failed devices). The mean age was 67.8 years (standard deviation (SD): +10.4), with 67.4% males and mean ABI was 0.7 (SD: +0.2). Participants spent on average 9.64 + 1.57 hr/day sitting (65.73% of waking hr) of which 4.85 ± 1.63 hr/day were in prolonged bouts (≥30 min). The median (interquartile range) for MVPA was 13.8 (27) min/day, which equated to 1,452 (3,074) steps per day. There was no relationship between PAD severity and sitting time (r = 0.055, P = 0.730).
Conclusion:
The accelerometry assessment of the studied sample of patients with PAD reveals that they are not meeting key guideline recommendations for MVPA participation and are spending a substantial amount of time sitting, often in prolonged, uninterrupted bouts of sitting. Interventions are warranted along with prompting decision makers to implement strategies aimed at reducing sitting time and promoting MVPA for improved outcomes in this group of patients.
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