Levels Of Physical Activity Index Research Articles

PTH-092 Investigating The Role Of Physical Activity In Pancreatic Cancer – The Age At Which This Is Measured Is Important In Aetiological Studies And Is Independent Of Body Mass Index

IntroductionThere are plausible biological mechanisms for how increased physical activity (PA) may prevent pancreatic cancer, although most studies do not report an inverse association. We investigated whether this may be...

Determinants of exercise peak arterial blood pressure, circulatory power, and exercise cardiac power in a population based sample of Finnish male and female aged 30 to 47 years: the Cardiovascular Risk in Young Finns Study

BackgroundNovel parameters derived from peak maximal oxygen uptake (VO2) and exercise arterial blood pressure, such as peak circulatory power (CP) and exercise cardiac power (ECP), can be used in the risk assessment of cardiovascular disease and stroke. However, the determinants of these factors are poorly characterized in the general population.MethodsWe assessed peak arterial blood pressure, CP and ECP with standardized cardiopulmonary exercise test (CPET) on 281 female and 257 male participants of the Cardiovascular Risk in Young Finns Study. The subjects were aged 30–47 years. Peak VO2 as well as systolic and diastolic arterial blood pressures were measured to calculate peak mean arterial pressure, CP and ECP. These parameters were assessed for correlation with sex, age, height, weight, waist-to-hip ratio, smoking, physical activity index (PAI), fasting insulin and glucose levels as well as the use of antihypertensive treatment.ResultsSex, age and weight explained 36% of the variation in peak systolic blood pressure, and these factors in combination with height and the use of antihypertensive treatment explained 13% of the variation in peak diastolic blood pressure. Sex, height, weight, waist-to-hip ratio, PAI and smoking explained 49% − 52% of the variation in peak CP. Sex, age, height, weight, waist-to-hip ratio, PAI, smoking and insulin levels explained 21% − 49% of variation in ECP.ConclusionsSubject demographics and lifestyle-related factors should be taken into account when exercise blood pressure response, CP and ECP are used to evaluate patients’ cardiac function in CPET.

Internal Validity of the Physical Activity Index over 26 Years in Middle‐Aged and Older Men

To determine the internal validity of the physical activity index (PAI). Three time periods over a 26-year period (1965/68 examination, n = 7911; 1980/82 examination, n = 2054; 1991/93 examination, n = 3425). Honolulu, Hawaii. Middle-aged to older Japanese-American men. PAI, other physical activity measures, body mass index (BMI), tricep skinfold thickness, subscapular skinfold thickness, and HDL cholesterol. PAI levels was associated significantly with levels of other physical activity measures at all time periods. Higher PAI level was associated with lower BMI at the baseline examination (1965/68), lower subscapular skinfold thickness at the 1965/68 and 1980/82 examinations, lower tricep skinfold thickness at all examinations, and higher HDL cholesterol at the 1980/82 examination. Change in PAI level from 1965/68 to 1980/82 was associated with change in BMI, subscapular, and tricep skinfold thickness levels, but there were no significant associations between change in PAI level and change in BMI, skinfold thicknesses, or HDL cholesterol levels from 1980/82 to 1991/93. PAI level is a relatively valid estimate of overall daily energy expenditure that may be an acceptable general measure across the middle-to-late stages of life. The PAI may also be sensitive enough to discern a shift toward less physical demanding activities as a population becomes older, although further studies should be conducted to better determine its validity in older populations.