Most Effective Knee Joint Angle Pair for Isometric Exercise

This study investigated the effects of isometric exercises applied to the quadriceps and hamstring muscles at different knee joint angles on balance, joint position sense, and functional performance in healthy individuals. Thirty participants aged 18-26 years were randomized into four groups and performed an eight-week training program, three times per week. Outcome measures included the Y Balance Test, digital goniometer assessments for joint position sense, and functional performance tests (stair climb and 30-second sit-to-stand). The results aim to identify which knee joint angles are most effective for improving neuromuscular function and may guide future rehabilitation and training protocols.

NCT Number	NCT07207135
Lead Sponsor	Firat University
Conditions	Isometric Exercise, Exercise Training, Musculoskeletal Function, Balance, Proprioception, and Functional Performance, Healthy Volunteers
Enrollment	44 participants
Start Date	2025-01-15
Primary Completion	2025-05-12 (estimated)
Study Completion	2025-05-30 (estimated)
Updated on ClinicalTrials.gov	2026-05-28