@article{jpar2018313,
author={{Birkenhead, Karen and Lovell, Geoff and Barr, Susan I. and Solomon, Colin},
title={Changes in Physical Activity across the Lifetime of Current Ultra-Endurance Exercisers},
journal={Journal of Physical Activity Research},
volume={3},
number={1},
pages={11--19},
year={2018},
url={http://pubs.sciepub.com/jpar/3/1/3},
issn={2574-4437},
abstract={This study describes the physical activity across and within the lifetime of current ultra-endurance exercisers. Participants (n = 115, % female = 42, age range 21 to 74 years) completed a modified version of the Lifetime Physical Activity Questionnaire (LPAQ) to assess physical activity over six life periods (5-12, 13-18, 19-30, 31-45, 46-60 and 61-75 years). Participants then were categorised into five groups according to which of these life periods they demonstrated the largest absolute increase in ultra-endurance exercise (UEE included all running and cycling) compared to the previous life period. All groups demonstrated significant increases (<i>p</i> &lt; .005) in UEE between their categorised life period of largest increase in UEE (IUEE) and the previous life period. Within groups, increases in average UEE MET-hours year<SUP>-1</SUP> ranged from 144% to 402%. Lifetime exercise volumes varied considerably within groups (average lifetime MET-hrs year<SUP>-1 </SUP>IUEE13-18 = 3830 ¡À 2362; IUEE19-30 = 4358 ¡À 2832; IUEE31-45 = 2975 ¡À 1970; IUEE46-60 = 2839 ¡À 1721; IUEE61-75 = 3454 ¡À 1720) and within the entire sample (average lifetime MET-hrs year<SUP>-1</SUP> = 3400 ¡À 2229 [range 375-12140]). This study is the first to describe the physical activity across and within the lifetime of ultra-endurance exercisers and reports that ultra-endurance exercisers exhibit significant increases in UEE within their lifetime.},
doi={10.12691/jpar-3-1-3}
publisher={Science and Education Publishing}
}