risk factors for hamstring injuries
Conditions
Interventions
After accepting to participate in the research, the athletes will answer the referred morbidity survey and a questionnaire about their sports practice containing data such as weekly practice hours, ye
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Sponsors
Universidade Federal de Mato Grosso do Sul
Universidade Federal de Mato Grosso do Sul
Eligibility
Sex/Gender
Male
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: Intermittent sports athletes (e.g., futsal, soccer and rugby); male; aged 18 to 40 years; and who practice the sport with competitive objectives.
Exclusion criteria
Exclusion criteria: Athletes will be excluded if they have any health condition that prevents them from performing the sports practice, the Nordic hamstring exercise, and the physical tests during the research; enter or leave the club after the beginning of the games and training; are injured or have injured their hamstrings or anterior cruciate ligaments of the knees in the last six months.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| To evaluate the strength/resistance of the hamstrings after 10 weeks of intervention with the Nordic hamstring exercise. Utilizing the single leg bridge test, the strength of the hamstrings will be measured one week before (baseline) and one week after (endline) the intervention. At the end of the intervention period, it is assumed that there will be a significant increase in the number of repetitions and a lower asymmetry index in group 1 than in group 2. | — |
Secondary
| Measure | Time frame |
|---|---|
| To evaluate speed over short distances after the 10-week Nordic hamstring exercise intervention period. The speed will be verified utilizing the 10 m sprint test. The test will be applied one week before and one week after the intervention. It is expected to find significant improvements in speed in seconds in group 1 compared to group 2.;To evaluate the improvement of performance in the change-of-direction action after 10 weeks of intervention of the Nordic hamstring exercise. The ability to change direction will be verified utilizing the 180° change-of-direction test one week before and one week after the intervention period, expecting to find significantly higher values, in seconds, in group 1 than in group 2.;To evaluate the flexibility of the posterior thigh muscles after the intervention period (10 weeks) with the performance of the Nordic hamstring exercise. The sit and reach test will be used to evaluate the flexibility of the hamstrings. It will be applied one week before and one week after the intervention period. It is expected that group 1 will show a significant improvement in centimeters on the test than group 2.;To evaluate the workload during the intervention period (10 weeks) of the Nordic hamstring exercise. The workload will be obtained from the answer to the question "How hard was your workout?" indicating the difficulty using the Borg Scale (1-10) multiplied by the time of the workout or game in minutes. The record will be made after the completion of each workout. It is expected that during the weeks of intervention, group 1 will demonstrate significantly lower values in arbitrary units compared to group 2.;To evaluate muscle soreness in the hamstrings during the intervention period (10 weeks) of the Nordic hamstring exercise. At the end of each workout, muscle soreness in the posterior thigh muscles will be checked in each participant. It will be measured by scoring the pain indicated by the athletes using a visual analog scale from 0 to 10 po | — |
Countries
Brazil
Contacts
Public ContactGianfranco;Silvio Sganzerla;Oliveira Júnior
Universidade Federal de Mato Grosso do Sul;Universidade Federal de Mato Grosso do Sul
Outcome results
None listed