Verweij, Lisanne M <br/><br/>
Distinguishing four components underlying physical activity: a new approach to using physical activity questionnaire data in old age.  [electronic resource] 

 -  BMC geriatrics  May 2010 
 - 20 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1471-2318 
<br/><br/><label>Standard No.: </label>10.1186/1471-2318-10-20  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged<br/>Aged, 80 and over<br/>Aging--physiology<br/>Biomechanical Phenomena--physiology<br/>Female<br/>Humans<br/>Longitudinal Studies<br/>Male<br/>Middle Aged<br/>Motor Activity--physiology<br/>Muscle Strength--physiology<br/>Physical Fitness--physiology<br/>Stress, Mechanical<br/>Surveys and Questionnaires--standards