title: The effect of percutaneous coronary intervention on habitual physical activity in older patients.
abstract: Given the ongoing burden of cardiovascular disease and an ageing population, physical activity in patients with coronary artery disease needs to be emphasized. This study assessed whether sedentary behaviour and physical activity levels differed among older patients (≥75 years) following percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS) consisting of ST-segment elevation myocardial infarction (STEMI) and non STEMI (NSTEMI) versus an elective admission control group of stable angina patients.
  
  
  
  Sedentary behaviour and physical activity were assessed over a 7-day period using wrist-worn triaxial accelerometers (GENEActiv, Activinsights Ltd, UK) in 58 patients following PCI for, STEMI (n = 20) NSTEMI (n = 18) and stable angina (n = 20) upon discharge from a tertiary centre. Mean ± Standard deviation age was 79 ± 4 years (31% female).
  
  
  
  STEMI and NSTEMI patients spent more time in the low acceleration category (0-40 mg) reflecting sedentary time versus stable angina patients (1298 ± 59 and 1305 ± 66 vs. 1240 ± 92 min/day, p < 0.05). STEMI and NSTEMI patients spent less time in the 40-80 mg acceleration category reflecting low physical activity versus stable angina patients (95 ± 35 and 94 ± 41 vs. 132 ± 50 min/day, p < 0.05). Stable angina patients spent more time in the higher acceleration categories (80-120 and 120-160 mg) and moderate-to-vigorous physical activity (defined as 1 and 5 min/day bouts) versus NSTEMI patients (p < 0.05). For acceleration categories ≥160 mg, no differences were observed.
  
  
  
  Patients presenting with ACS and undergoing PCI spent more time in sedentary behaviour compared with stable angina patients.
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Sarah J
authors.initials: SJ
authors.lastname: Charman
authors.affiliation: Netherlands eScience Center, Amsterdam, The Netherlands.
authors.forename: Vincent T
authors.initials: VT
authors.lastname: van Hees
authors.affiliation: Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
authors.forename: Louise
authors.initials: L
authors.lastname: Quinn
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Joseph R
authors.initials: JR
authors.lastname: Dunford
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Bilal
authors.initials: B
authors.lastname: Bawamia
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Murugapathy
authors.initials: M
authors.lastname: Veerasamy
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Michael I
authors.initials: MI
authors.lastname: Trenell
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Djordje G
authors.initials: DG
authors.lastname: Jakovljevic
authors.affiliation: Institute of Cellular Medicine, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK. vijay.kunadian@newcastle.ac.uk.|Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK. vijay.kunadian@newcastle.ac.uk.
authors.forename: Vijay
authors.initials: V
authors.lastname: Kunadian
mesh_terms: D061725:Accelerometry; D000368:Aged; D000369:Aged, 80 and over; D001519:Behavior; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000503:physiopathology / Q000523:psychology / Q000601:surgery*; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D062645:Percutaneous Coronary Intervention / Q000379:methods*; D011184:Postoperative Period; D012042:Registries; D012307:Risk Factors; D057185:Sedentary Behavior