title: Myocardial perfusion image in asymptomatic postmenopausal women with physical inactivity and overweight.
abstract: OBJECTIVE
  This study aimed to investigate whether physical inactivity and overweight deteriorate myocardial perfusion and cardiac function in asymptomatic postmenopausal women.
  
  
  METHODS
  A prospective cross-sectional study design was used. Postmenopausal women recruited in this study were categorized into groups based on activity level and BMI: physically active, normal-weight group (PANw, n = 15, 60.9 ± 6.0 years), physically inactive, normal-weight group (PIANw, n = 13, 57.2 ± 5.0 years) and physically inactive, overweight group (PIAO, n = 26, 58.5 ± 5.8 years). Each subject took cardiopulmonary function tests and ECG-gated exercise (201)Tl myocardial perfusion imaging (MPI). Perfusion abnormalities, cardiac function indices, and (201)Tl lung-to- heart ratio (LHR) were derived.
  
  
  RESULTS
  The PIANw women had lower exercise capacity than PANw women. More subjects in PIANw (46%) or PIAO (48%) groups had worsening in left ventricular ejection fraction (LVEF) by exercise than subjects in PANw (7%) group. The PIAO women exhibited significantly lower exercise capacity and higher rest LHR than PANw women (LHR 0.41 ± 0.05 vs. 0.36 ± 0.06; p = 0.014). Abnormal MPI tended to increase in PIANw (38%) and PIAO (46%) women when compared with the PANw (27%) group.
  
  
  CONCLUSIONS
  Physically inactive, overweight postmenopausal women had higher rest (201)Tl lung uptake and worsening LVEF by exercise and tended to have higher prevalence of inducible ischemia, suggesting higher cardiovascular risks although asymptomatic.
authors.affiliation: School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.
authors.forename: Chen-Lin
authors.initials: CL
authors.lastname: Chien
authors.forename: Yen-Wen
authors.initials: YW
authors.lastname: Wu
authors.forename: Wei-Shiung
authors.initials: WS
authors.lastname: Yang
authors.forename: Pan-Chyr
authors.initials: PC
authors.lastname: Yang
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Su
authors.forename: Ying-Tai
authors.initials: YT
authors.lastname: Wu
mesh_terms: D000368:Aged; D015992:Body Mass Index; D003326:Coronary Circulation; D003430:Cross-Sectional Studies; D015444:Exercise / Q000502:physiology*; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000453:epidemiology / Q000209:etiology*; D055414:Myocardial Perfusion Imaging / Q000379:methods; D050177:Overweight / Q000150:complications / Q000503:physiopathology*; D017698:Postmenopause; D015995:Prevalence; D011446:Prospective Studies; D012016:Reference Values; D012146:Rest / Q000502:physiology; D012307:Risk Factors; D057185:Sedentary Behavior; D018487:Ventricular Dysfunction, Left / Q000453:epidemiology / Q000209:etiology; D016277:Ventricular Function, Left