The Effect of Muscular Fatigue on Lower Limb Kinematics During Single-Leg Drop Landing in Female Athletes

NCT07648537 | Not Yet Recruiting

• 1 other identifier: P.T.REC/012/0067282
• Study Type: interventional
• Target: 35
• Locations: 0 countries
• Sites: N/A

Brief Summary

this study will be conducted to investigate the effect of muscular fatigue on lower limb kinematics during single-leg drop landing in female professional volleyball players using a mobile-based motion analysis application.

Conditions

Athletes

Keywords

Muscular Fatigue; Lower Limb Kinematics; Single-Leg Drop Landing; Female Athletes

Outcome Measures

Primary Outcomes (4)

• hip range of motion

  OpenCap will be used to assess hip range of motion. the Video recordings will be analyzed using OpenCap, a validated markerless motion capture system that estimates 3D joint kinematics from synchronized smartphone cameras through an automated pipeline that applies advanced computer vision and machine learning algorithms to extract joint angles efficiently and with high validity

  up to one day

• knee flexion range of motion

  OpenCap will be used to assess knee flexion range of motion. the Video recordings will be analyzed using OpenCap, a validated markerless motion capture system that estimates 3D joint kinematics from synchronized smartphone cameras through an automated pipeline that applies advanced computer vision and machine learning algorithms to extract joint angles efficiently and with high validity

  up to one day

• ankle dorsiflexion range of motion

  OpenCap will be used to assess ankle dorsiflexion range of motion. the Video recordings will be analyzed using OpenCap, a validated markerless motion capture system that estimates 3D joint kinematics from synchronized smartphone cameras through an automated pipeline that applies advanced computer vision and machine learning algorithms to extract joint angles efficiently and with high validity

  up to one day

• knee valgus angle

  OpenCap will be used to assess knee valgus angle. the Video recordings will be analyzed using OpenCap, a validated markerless motion capture system that estimates 3D joint kinematics from synchronized smartphone cameras through an automated pipeline that applies advanced computer vision and machine learning algorithms to extract joint angles efficiently and with high validity

  up to one day

Study Arms (1)

fatigue protocol

EXPERIMENTAL

Thirty five female professional volleyball players and aged between 18-25 years will be recruited from local Egyptian club. all femalles applief fatigue protocol

Other: fatigue protocol

Interventions

fatigue protocol OTHER

Before formal testing, participants will perform a five-minute warm-up replicating their usual pre-volleyball training routine. Following the warm-up, the single-leg drop landing (SLDL) task will be clearly explained and demonstrated to all participants.Stand barefoot on both legs on a 30 cm box, then extend the testing leg forward. They will then step off the box using the testing leg, land on the same leg with a toe-heel landing pattern. After familiarization, participants will perform three trials of the SLDL task under non-fatigued conditions.Following the completion of the non-fatigue single-leg drop landing (SLDL) trials, each participant will perform three maximal vertical jumps to assess their maximum touch height. The highest value obtained from these attempts will be recorded as the participant's baseline for subsequent comparisons.Following the completion of the baseline maximal vertical jump assessment, participants will undergo a systematic fatigue induction protocol

fatigue protocol

Eligibility Criteria

• Age: 20 Years - 25 Years
• Gender Eligibility Details: Thirty five female professional volleyball players and aged between 18-25 years will be recruited from local Egyptian club.
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Female volleyball players aged 20-25 years
• Practice professional volleyball training or competition experience of at least 2 years
• typically engage in a high volume of training, with regular participation in at least five training sessions per week
• Willingness to adhere to fatigue protocol and provide informed consent

You may not qualify if:

• Current or recent (within the past 6 months) lower limb injury or medical condition
• History of lower limb surgeries
• Neurological disorders or balance impairments .
• Experiencing pain or discomfort during jumping or landing tasks
• Body mass index (BMI) greater than 30 kg/m²
• Inability to comply with the fatigue protocol or follow instructions for the landing tasks

Sponsors & Collaborators

• Cairo University: lead

Central Study Contacts

mawada mohamed, master

CONTACT

+20 10 24330410; mawada.mooda96@gmail.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: principle investigator :mowada mohamed meshref

Model Details: fatigue protocol

Study Record Dates

• First Submitted: June 10, 2026
• First Posted: June 15, 2026
• Study Start (Estimated): June 30, 2026
• Primary Completion (Estimated): December 20, 2026
• Study Completion (Estimated): December 20, 2026
• Last Updated: June 15, 2026

Record last verified: 2026-06