New relative intensity ambulatory accelerometer thresholds for elderly men and women: the Generation 100 study.

ABSTRACT:

Background

Public health initiatives world-wide recommend increasing physical activity (PA) to improve health. However, the dose and the intensity of PA producing the most benefit are still debated. Accurate assessment of PA is necessary in order to 1) investigate the dose-response relationship between PA and health, 2) shape the most beneficial public health initiatives and 3) test the effectiveness of such initiatives. Actigraph accelerometer is widely used to objectively assess PA, and the raw data is given in counts per unit time. Count-thresholds for low, moderate and vigorous PA are mostly based on absolute intensity. This leads to largely inadequate PA intensity assessment in a large proportion of the elderly, who due to their declining maximal oxygen uptake (VO2max) cannot

SUBMITTER: Zisko N 

PROVIDER: S-EPMC4524358 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature