The purpose of this study is to examine the acute and chronic effects of high frequency electrical current transfer (frequently called "TECAR") on pain and functional movement in individuals with a musculoskeletal injury or pain. The participants will be assigned into an experimental or a control group and outcome measures will be measured prior to, after, 24 and 48 hours following a single intervention session (Acute effects) as well as 3 and 6 months after the intervention (chronic effects).
Age over 18 years.
Athletes: amateur soccer players or sprinters with regular, systematic training.
Suspected Grade I or II hamstring strain.
Cessation of training due to injury.
History of injury to the same muscle (ipsilateral side) within the last 6 months.
Other injury to the posterior aspect of the thigh.
Other injuries or chronic pain in the trunk or lower limbs.
Use of non-steroidal anti-inflammatory drugs (NSAIDs) in the 3 months prior to the injury.