title: Effect of three types of flexibility training on active and passive hip range of motion.
abstract: OBJECTIVE
  The aim of this study was to measure the effect of 3 types of flexibility training, hold-relax (HR, N.=9), active isolated stretching (AIS, N.=9) and passive static stretching (PSS, N.=11) on passive and active range of motion of hip flexion after 9 weeks of flexibility training.
  
  
  METHODS
  The subjects were physical education college students (14 men and 15 women) whose ages ranged between 20 and 24 years (age mean 21.79, SD: 2.45). A multigroup pre- post-test design with three experimental groups was used. The range of movement was measured by digitalization of pre-test and post-test images.
  
  
  RESULTS
  Significant differences were found among the pre- and post-test for the three groups (P<0.05) on passive range of motion of the hip flexion, although there were no significant post-test differences between experimental groups. However, on the active range of motion of hip flexion there was only significant improvement among the pre-test and post-tests for PSS group (P<0.05).
  
  
  CONCLUSIONS
  The results suggest that PSS is the best option for the improvement of both active and passive range of motion.
authors.affiliation: Department of Physical Education and Sport Faculty of Physical Activity and Sports Sciences Granada University, Granada, Spain.
authors.forename: J
authors.initials: J
authors.lastname: López-Bedoya
authors.forename: M
authors.initials: M
authors.lastname: Vernetta-Santana
authors.forename: A
authors.initials: A
authors.lastname: Robles-Fuentes
authors.forename: L
authors.initials: L
authors.lastname: Ariza-Vargas
mesh_terms: D000328:Adult; D005260:Female; D006621:Hip Joint / Q000502:physiology*; D006801:Humans; D008297:Male; D052580:Muscle Stretching Exercises / Q000379:methods*; D016059:Range of Motion, Articular / Q000502:physiology*; D055815:Young Adult