Fiebert, I <br/><br/>
Are "passive" extension exercises really passive?  [electronic resource] 

 -  The Journal of orthopaedic and sports physical therapy  Feb 1994 
 - 111-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0190-6011 
<br/><br/><label>Standard No.: </label>10.2519/jospt.1994.19.2.111  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Electromyography--instrumentation<br/>Exercise Therapy--instrumentation<br/>Female<br/>Humans<br/>Low Back Pain--physiopathology<br/>Male<br/>Middle Aged<br/>Muscle Contraction--physiology<br/>Muscles--physiopathology<br/>Posture<br/>Prospective Studies<br/>Signal Processing, Computer-Assisted--instrumentation