Compatibility of Different Injury Prevention Exercises in Athletes

This investigation is aimed to examine the effects of two different exercise-oriented protocols on the knee torque-angle relationship of the knee flexors.

Thirty two young soccer players were be randomly assigned to three groups: hamstring-eccentric (ECC, n=11), unstable-squatting (UNS, n=11) or control (C, n=10). The ECC and UNS groups performed eighteen sessions over 6 weeks of an injury prevention protocol, using only 3 hamstring-eccentric or unstable-squatting exercises. The angle-torque relationship was measured before and after the training intervention. Voluntary isometric torque was recorded at six test angles, with participants prone (35º-100º; 0º on full extension).

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Key information

Conditions

Injury Prevention

Age range

18 year–45 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

About this study

This study utilized a three parallel-groups randomized controlled design, where 3 between-participant conditions, ECC, UNS and C, were tested. Once considered eligible for the study, all participants were familiarized with the testing procedures. Participants attended the laboratory for a pre-training test session, where body mass, height and muscle functional parameters were recorded. Two days after their pre-test, participants including in ECC or UNS started a 6 weeks (18 sessions) training program while the control group did not perform any type of resistance training.

Nevertheless, during the 6 weeks intervention period all three groups continued with their normal recreationally physical activity consisting in 2 to 3 sessions per week of soccer training or friendly matches. Two days after the end of the intervention period muscle function was re-tested.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

males, recreationally trained football players
Read and sign the informed consent

Exclusion criteria

Participants that has undertaken a lower body resistance-training program in the preceding 6 months,
Reported a previous lower limb injury

Treatment and study plan

Eccentric hamstring exercises

Other

Three exercises: 3 sets of 8 repetitions with 1 minute of rest between sets and 2 minutes of rest between exercises

Unistable exercises

Other

Three exercises: 3 sets of 8 repetitions with 1 minute of rest between sets and 2 minutes of rest between exercises

Control

Other

Only soccer training

Primary outcomes

knee torque-angle

Time frame: 1 week

Isokinetic measurements

Sponsors and collaborators

Lead sponsor

University of Greenwich

Other

Registry information

Official study title

Effects of Two Different Injury Prevention Resistance Exercise Protocols on the Hamstring Torque-Angle Relationship: A Randomized Controlled Trial

Important dates

Study start: 2012
Primary completion: 2012
Study completion: 2012
First posted: Dec 8, 2014
Registry last updated: Dec 5, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed