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Effects of Long-term Foam Rolling Compared to Static Stretching on Hamstring Muscle Flexibility

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ClinicalTrials.gov Identifier: NCT02808923
Recruitment Status : Unknown
Verified June 2016 by Creighton University.
Recruitment status was:  Not yet recruiting
First Posted : June 22, 2016
Last Update Posted : June 22, 2016
Information provided by (Responsible Party):
Creighton University

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.

Condition or disease Intervention/treatment Phase
Muscle Hypertonia Other: Foam Rolling Other: Static Stretching Not Applicable

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 45 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
Study Start Date : June 2016
Estimated Primary Completion Date : August 2016

Arm Intervention/treatment
Experimental: Foam rolling
Participants in the foam rolling group will perform unilateral rolling of the hamstring musculature from ischial tuberosity to posterior knee in supine for 2 repetitions of 1 minute with 15 second rest between repetitions at a consistent cadence of 1 second superiorly and 1 second inferiorly. Subjects will be asked to adjust pressure as needed to maintain a consistent moderate pressure on the treatment area. Participants will use new and individually issued high density foam rollers that are 6" diameter x 36" length.
Other: Foam Rolling
Participants will perform unilateral hamstring rolling for 2 repetitions of 1 minute with 15 second rest breaks on each leg with a 6"x 36" foam roller.

Experimental: Static stretching
Participants in the static stretching group will perform sustained static hamstring stretching for 2 repetitions of 1 minute bouts for the same leg before switching sides using moderate pressure in supine against the wall. Subjects will rest for 15 seconds between repetitions and adjust distance from the wall to perceive moderate intensity.
Other: Static Stretching
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.

No Intervention: Control
The control group will perform their regular baseline activities without the addition of a specific lower extremity flexibility program. If the subjects are currently performing stretching of any mode at baseline, they will be allowed to continue with that activity.

Primary Outcome Measures :
  1. Change in 90/90 hamstring length [ Time Frame: 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 Outcome Measures :
  1. Change in Active straight leg raise - Range of motion [ Time Frame: 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

  2. Change in Active straight leg raise - Functional Movement Screen [ Time Frame: 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.

  3. Change in Sit-and-reach [ Time Frame: 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.

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Ages Eligible for Study:   19 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02808923

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Contact: Trevor Schongalla, DPT 541-777-0686 trevorschongalla@creighton.edu

Sponsors and Collaborators
Creighton University
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Principal Investigator: Trevor Schongalla, DPT Creighton University
Mistry GS, Vyas NJ, Sheth, MS. Comparison of hamstrings flexibility in subjects with chronic low back pain versus normal individuals. J Clin Exp Res. 2014; 2(1): 85-88.
Barnes. The Basic Science Myofascial Release: Morphologic Change in Connective Tissue. Journal of Bodywork and Movement Therapies. 1997;1(4):231-238.
Schleip R. Fascial plasticity - a new neurobiological explanation: Part 1. Jounral of Bodywork and Movement Therapies. 2003;7(1): 11-19.
Miller MK, Ashley RM. Foam Rollers Show No Increase in the Flexibility of the Hamstring Muscle Group. Journal of Undergraduate Research. 2006; 10: 1-4.
Goldspink G. Cellular and molecular aspects of adaptation in skeletal muscle. In: Komi PV, editor. Strength and Power in Sports. Oxford: Blackwell, 1992:211-29.

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Responsible Party: Creighton University
ClinicalTrials.gov Identifier: NCT02808923    
Other Study ID Numbers: 908292-1
First Posted: June 22, 2016    Key Record Dates
Last Update Posted: June 22, 2016
Last Verified: June 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: Non-identifying participant demographics and data on outcome measures (range of motion) for the study may be made available through publication or presentation on the study.
Additional relevant MeSH terms:
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Muscle Hypertonia
Neuromuscular Manifestations
Neurologic Manifestations
Nervous System Diseases