title: Association between physical activity (PA) guidelines and body composition variables in middle-aged and older women.
abstract: The aim of this study was to investigate the association between volume and frequency of moderate-intensity PA and step-based recommendations and individual body composition variables. Our cohort included 167 healthy ambulatory women (mean age 62.8 ± 4.8 years; body mass index [BMI] 27.3 ± 4.2 kg/m(2)) who carried out daily activities while wearing the ActiGraph GT1M accelerometer over a seven day period. Measurements of BMI, body fat mass index (BFMI), fat-free mass index (FFMI), waist-hip ratio (WHR) and visceral fat area (VFA) were obtained by the InBody 720 multifrequency bioelectrical impedance analysis (MFBIA) device. The significant relationship (r(s)=0.66; p<0.05) was found between moderate PA and steps per day. Moderate PA (r(2)=0.03-0.06) and steps per day (r(2)=0.05-0.20) were significantly associated with observed body composition parameters. Women spending > 300 min/week in moderate PA showed significantly lower values of BFMI (p=0.02) than those who spent 150-300 min/week. Carrying out moderate PA for 30 min 5 days a week was significantly associated with lower BMI (p=0.04; η(2)=0.02), BFMI (p=0.02; η(2)=0.03) and VFA (p=0.03; η(2)=0.03). In addition, higher amounts of daily steps were significantly associated with lower BMI (p=0.00; η(2)=0.16), BFMI (p=0.00; η(2)=0.21), VFA (p=0.00; η(2)=0.20) and WHR (p=0.00; η(2)=0.13). A clear association was found between the generally recommended PA guidelines and body composition variables for the women examined in this study. However, the concept of 10,000 steps/day appears to be the strongest predictor of health-related body composition values.
authors: Center for Kinanthropology Research, Faculty of Physical Culture, Palacký University in Olomouc, Tř. Míru 115, 771 11 Olomouc, Czech Republic.
authors: Jana
authors: J
authors: Pelclová
authors: Aleš
authors: A
authors: Gába
authors: Lenka
authors: L
authors: Tlučáková
authors: Dariusz
authors: D
authors: Pośpiech
mesh_terms: D061725:Accelerometry / Q000295:instrumentation; D000368:Aged; D001823:Body Composition; D015331:Cohort Studies; D018153:Czech Republic; D017097:Electric Impedance; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D050152:Intra-Abdominal Fat; D008875:Middle Aged; D009043:Motor Activity; D011044:Poland; D018154:Slovakia; D049629:Waist-Hip Ratio