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An open-label, single-group, control, pretest-posttest clinical trial is going to be conducted, with 16 healthy sprinters. Rectus femoris length and hamstring strength and electromyography is going to be assessed at baseline, after 10 minutes control and after an static rectus femoris stretching technique.
The main objective is to register if an increase in rectus femoris stretching Range of Motion, increases hamstring strength and activity due to their antagonic relationship and their relation with pelvic tilt.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control | No Intervention | 5 minutes waiting time | |
| Stretching | Experimental | Rectus femoris static stretching during 90' (with three hold-relax progressions until final ROM) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Rectus femoris stretching | Procedure | Patient lying prone with the non-implicated leg outside the treatment table resting on the floor. Physical therapist flexes patients knee until tension is felt. In that position 5 seconds' isometric contraction is asked and physical therapist progresses in knee flexion range of motion until new tension is felt. After three contract-relax procedures physical therapist holds the range of motion for 30 seconds. |
| Measure | Description | Time Frame |
|---|---|---|
| Rectus femoris length | Knee flexion range of motion with inclinometer | Inmediate after intervention; up to 10 minutes |
| Biceps femoris strength | Dynamometry | Inmediate after intervention; up to 10 minutes |
| Gluteus maximus strength | Dynamometry | Inmediate after intervention; up to 10 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Rectus femoris tensomyography | tensomyography | Inmediate after intervention; up to 10 minutes |
| Pelvic anteversion | Photometry of lateral view |
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Inclusion criteria:
Exclusion criteria:
- Subjects who have suffered lower limb or back injuries during those last three years
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| Name | Affiliation | Role |
|---|---|---|
| Alazne Ruiz de Escudero Zapico, PhD | Universidad Pública de Navarra | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Cnetro ragonés del Deporte | Zaragoza | 50018 | Spain |
All individual participant data that underlie results in a publication
Starting 6 months after publication
Principal investigator will review requests and criteria for reviewing requests will be individually assessed
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|
| Inmediate after intervention; up to 10 minutes |
| Sprint muscle activity | Electromyography | Inmediate after intervention; up to 10 minutes |