Muscle Hypertonia
Conditions
Brief summary
The purpose of this study to to compare the long-term effects of foam rolling in comparison to static stretching and a control group on hamstring flexibility. The investigators hypothesize that participants in the foam rolling and static stretching group will demonstrate increased flexibility to the control group, but will a difference will not be observed between the foam rolling and static stretching groups.
Interventions
Participants will perform unilateral hamstring rolling for 2 repetitions of 1 minute with 15 second rest breaks on each leg with a 6x 36 foam roller.
Participants will perform supine static hamstring stretch on a wall for 2 repetitions of 1 minute with 15 second rest breaks on each leg. When the position no longer causes a moderate stretching sensation to the hamstring, subjects will move their bodies closer to the wall to intensify the stretch.
Sponsors
Study design
Eligibility
Inclusion criteria
* Active 90/90 hamstring length goniometric measurement of greater than 10 degrees at baseline * Active straight leg raise of less than 90 degrees
Exclusion criteria
* History of lower extremity injury including but not limited to sprain, strain, fracture, or any surgical intervention that lead to a decrease in activity greater than two weeks within the last six months * Current involvement in a lower extremity flexibility program outside of their regular activity
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in 90/90 hamstring length | Baseline, 3 weeks, 6 weeks | Participant is supine, hip flexed to 90 degrees, knee extension range of motion measured actively from 90 degree starting position with a standard goniometer |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Active straight leg raise - Range of motion | Baseline, 3 weeks, 6 weeks | Participant is supine, with contralateral leg straight the participant will actively raise the leg until end of range with hip flexion being measured by goniometer |
| Change in Active straight leg raise - Functional Movement Screen | Baseline, 3 weeks, 6 weeks | Participant is supine, with contralateral leg straight the participant will actively raise the leg until end of range. This end range will be compared to a standardized position using a dowel and will be scored according to the functional movement screen. |
| Change in Sit-and-reach | Baseline, 3 weeks, 6 weeks | Using a standardized sit-and-reach box, participants will sit with legs together, knees extended, and hands overlapped and extended in front of the body. The subject will forward flex until end range of motion measured in centimeters. |