In athletics, in the sprint and hurdles disciplines, muscle injuries account for a significant proportion of injuries. The hamstrings are particularly vulnerable, accounting for between 12% and 26% of all injuries in these sports. A single-blind study was conducted on 20 hurdler patients with the intention of assessing hip mobility, hamstring flexibility and performance. To collect this data, the research team will conduct examinations and interviews with the athletes in two groups: an experimental group using LightBack and a placebo group.

Inclusion Criteria:

• Sprinters and hurdlers aged 18 to 30 years.
• No history of recent (less than 6 months) hamstring or hip injury.
• Signed informed consent.

Exclusion Criteria:

• Cruciate or hamstring tears less than 6 months old;
• Hip and back surgery less than 3 months old;
• Chronic or acute back problems;
• Pregnancy;
• Osteoporosis
• Tumours, bone cancer of the hip and pelvis;
• Direct trauma to the back of the thigh less than 6 months old.
• Orthopaedic or neurological pathologies affecting mobility or muscle activation.
• Participation in another specific training protocol

Placebo Group