Immediate Effects of Five Motor Control Strategies on Feedforward Electromyographic Activity of Hip and Thigh Muscles and Kinematic Indicators of ACL Injury Risk During Drop Vertical Jump in Male Handball Players with Dynamic Knee Valgus

Interaction of Motor Learning Strategies, Electromyography, and Biomechanical variables in improving risk factors associated with ACL injury.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20250527065941N3

Enrollment

Registered

2026-05-23

Start date

2026-05-31

Completion date

Unknown

Last updated

2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dynamic Knee Valgus. Chronic instability of knee, unspecified knee

Interventions

Intervention 1: Intervention group: The Internal Focus (IF) group received one 60-minute session of structured training based on awareness of joint movement and maintaining knee alignment with the toe

Eligibility

Sex/Gender

Male

Age

18 Years to 25 Years

Inclusion criteria

Inclusion criteria: Being male handball players Demonstrating dynamic knee valgus (DKV), defined as a frontal plane projection angle (FPPA) exceeding 9° Being over 18 years old Having a normal body mass index (BMI) within the range of 18.5–25

Exclusion criteria

Exclusion criteria: Voluntary withdrawal from the study Failure to meet the inclusion criteria at any point during the study Inability to complete the training tests Structural deformities of the lower limbs A history of fractures or dislocations in the hip, knee, or ankle A history of lower back pain within the past year A history of Vestibular disorders or ligament injuries in the lower limbs Prior participation in pedagogical training approaches programs within the past year

Design outcomes

Primary

Measure	Time frame
Feedforward Electromyographic Activity. Timepoint: Pre-test; Post-test. Method of measurement: The surface EMG system was used to assess feedforward muscle activity.;Kinematic variables. Timepoint: Pre-test; Post-test. Method of measurement: The Vicon Motion System was used to assess kinematic variables.;Frontal Plane Projection Angle. Timepoint: Pre-test; Post-test. Method of measurement: The Kinovea software was used to measure the frontal plane projection angle.	—

Measure

Time frame

Feedforward Electromyographic Activity. Timepoint: Pre-test; Post-test. Method of measurement: The surface EMG system was used to assess feedforward muscle activity.;Kinematic variables. Timepoint: Pre-test; Post-test. Method of measurement: The Vicon Motion System was used to assess kinematic variables.;Frontal Plane Projection Angle. Timepoint: Pre-test; Post-test. Method of measurement: The Kinovea software was used to measure the frontal plane projection angle.

—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactBehzad Mohammadi Orangi

The University of Damghan

behzadmoohamadi@gmail.com+98 914 874 4497

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Jun 11, 2026