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This study compared the effects of two myofascial chain training programs - the Superficial Posterior Line (PL) and the Spiral Line (SL) - on joint mobility and myofascial isometric endurance in adolescent male football players. Thirty-eight licensed male players (ages 15-16) were enrolled in a randomized crossover trial consisting of two 6-week training phases (12 weeks total), with follow-up measurements at week 16. Each program was delivered twice weekly in 30-minute sessions alongside regular club training. Joint mobility was assessed using goniometry (shoulder flexion, hip flexion, hip extension, popliteal angle), and myofascial isometric endurance was evaluated using the Bunkie Test across five lines (APL, PPL, PSL, LSL, MSL).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| PL-First Group (PLFG) | Experimental | Participants first completed 6 weeks of Superficial Posterior Line (PL) myofascial training, followed by 6 weeks of Spiral Line (SL) myofascial training. |
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| SL-First Group (SLFG) | Experimental | Participants first completed 6 weeks of Spiral Line (SL) myofascial training, followed by 6 weeks of Superficial Posterior Line (PL) myofascial training. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Superficial Posterior Line (PL) Myofascial Training | Behavioral | 6-week myofascial training program targeting the posterior chain (plantar fascia, gastrocnemius, hamstrings, erector spinae). Two 30-minute sessions per week. |
| Measure | Description | Time Frame |
|---|---|---|
| Myofascial Isometric Endurance (Bunkie Test) | Isometric endurance of five myofascial lines (APL, PPL, PSL, LSL, MSL) assessed in seconds using the Bunkie Test protocol. | Baseline, Week 6, Week 12, and Week 16 |
| Shoulder Flexion Range of Motion | degrees | Baseline, Week 6, Week 12, and Week 16 |
| Hip Flexion Range of Motion | degrees | Baseline, Week 6, Week 12, and Week 16 |
| Hip Extension Range of Motion | degrees | Baseline, Week 6, Week 12, and Week 16 |
| Popliteal Angle | degrees | Baseline, Week 6, Week 12, and Week 16 |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Mersin University | Mersin | Mersin | 33343 | Turkey (Türkiye) |
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| Spiral Line (SL) Myofascial Training | Behavioral | 6-week myofascial training program targeting the spiral chain (rhomboids, serratus anterior, obliques, ITB, fibularis longus). Two 30-minute sessions per week. |
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