Are Older Adults Who Volunteer to Participate in an Exercise Study Fitter and Healthier than Nonvolunteers? The Participation Bias of the Study Population
Barreto, Philipe de Souto, Ferrandez, Anne-Marie, Saliba-Serre, BérengèreVolume:
10
Language:
english
Journal:
Journal of Physical Activity and Health
DOI:
10.1123/jpah.10.3.359
Date:
March, 2013
File:
PDF, 153 KB
english, 2013