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Research Objectives
To investigate the pre and post-intervention differences in hip range of motion after
mobilization with movement, a static stretch, or control in those with reduced hip
mobility.
Design
The study was a three-arm, single blind, randomized controlled trial. Subjects received
pre-intervention hip range of motion measurements followed by randomization into one
of three groups: [1] a supine hip internal rotation stretch [2] a supine hip internal
rotation mobilization with movement or [3] a control. A second Investigator blinded
to baseline measurements completed the intervention. Post-test measurements were then
obtained immediately after the intervention by an investigator blinded to group assignment.
Setting
The study was conducted in university clinical laboratory.
Participants
A convenience sample of fifty-six (56) subjects with limited hip internal rotation
less than 10 degree were recruited.
Interventions
Subjects were randomized into one of three groups: [1] a supine hip internal rotation
stretch repeated for 3 bouts of 30 seconds with a 10 second rest between sets [2]
a supine hip internal rotation mobilization with movement for 3 sets of 10 repetitions
and 30 seconds of rest between sets or [3] a control of lying supine for 2 minutes.
Main Outcome Measures
Hip range of motion including, internal rotation, external rotation, flexion and extension.
Results
At baseline, independent t-tests suggest no significant difference between (p>o.05).
Group-by-time interactions revealed a significant difference (p=0.001) for immediate
range of motion changes in the hip treatment groups for internal rotation, external
rotation, flexion and extension compared to the control group. However, no significant
differences were noted between the treatment groups. Within-group analysis revealed
significant changes in treatment groups (p<0.001).
Conclusions
A lack of hip internal rotation has been associated with low back pain, hip osteoarthritis
as well as sacroiliac disorders. Hip mobilization with movement and a passive internal
rotation stretch demonstrated the ability to significantly improve available hip range
of motion. Future research should include testing long term effects as well as serial
interventions.
Author(s) Disclosures
Authors report no conflict of interest.
Keywords
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Copyright
© 2022 Published by Elsevier Inc.
