Ortega, F B <br/><br/>
Physical fitness levels among European adolescents: the HELENA study.  [electronic resource] 

 -  British journal of sports medicine  Jan 2011 
 - 20-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1473-0480 
<br/><br/><label>Standard No.: </label>10.1136/bjsm.2009.062679  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Body Weight--physiology<br/>Cross-Sectional Studies<br/>Exercise--physiology<br/>Exercise Test<br/>Female<br/>Humans<br/>Male<br/>Muscle Strength--physiology<br/>Muscle, Skeletal--physiology<br/>Physical Fitness--physiology