Dynamic vs. PNF Quadriceps Stretching in Cyclists

Not Applicable

Recruiting

• Conditions: Sports Physical Therapy

• Registration Number: NCT07164729
• Lead Sponsor: Istinye University

Brief Summary

Following an initial assessment, 30 professional cyclists will be divided into two groups (1:1). PNF stretching will be applied to the Quadriceps muscles of the participants in Group A, while Group B will perform dynamic stretching on the Quadriceps muscles. After the interventions, all participants will undergo a second assessment. The study aims to compare the immediate effects of these two different types of stretching on muscle performance, strength and joint range of motion. Participants will attend a single day for both the assessments and the intervention sessions.

Detailed Description

Not available

Study Timeline

• Status Verified: 2025-09
• Study Start: 2025-09-01
• Study First Submitted: 2025-09-02
• Study First Submitted QC: 2025-09-02
• Last Update Submitted: 2025-09-02
• Study First Posted: 2025-09-10
• Last Update Posted: 2025-09-10
• Primary Completion: 2025-10-01
• Study Completion: 2025-10-01

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• Being a professional cyclist (training intensively at least 4-5 times per week and having a minimum of 5-10 years of cycling experience).
• Voluntary participation in the study.
• No recent history of sports-related injury.

Exclusion Criteria

• Presence of neurological, orthopedic, or cardiovascular diseases.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Anaerobic Power Step Test	Through study completion, an average of 1 month	It involves stepping up and down on a platform of a specified height. The participant will step rapidly and rhythmically on the platform for 30 and 60 seconds, aiming to complete as many steps as possible. The total number of steps will be recorded at the end of the test. Proper form and rhythmic stepping will be emphasized during the test; the athlete must place the entire foot on the platform and achieve full extension with each step. The data obtained from this test will be used to assess the athlete's anaerobic capacity and lower-body explosive power
Vertical Jump Test	Through study completion, an average of 1 month	The vertical jump test is performed by instructing an athlete to jump as high as possible from a standing position. Typically, the athlete will first stand and reach upward to mark the highest point they can touch while standing. Then, they will jump as high as possible, and the jump height will be recorded. The difference between the standing reach and jump height is calculated as the vertical jump distance.

Secondary Outcome Measures

Name	Time	Method
Lower Extremity Muscle Strength	Through study completion, an average of 1 month	Lower extremity muscle strength will be measured using the Lafayette Hand-Held Dynamometer (HHD). During its application, the Lafayette HHD measures the force generated during the muscle's maximal isometric contraction. Knee flexion, knee extension, hip flexion and hip extension muscle strength will be measured. The measurement will be repeated three times.
Lower Extremity Joint Range of Motion	Through study completion, an average of 1 month	Lower extremity joint range of motion will be assessed using a goniometer. The joint range of motion measurements will include hip flexion, extension, abduction, adduction, internal and external rotation, as well as knee flexion and extension.

Trial Locations

Locations (1)

Istinye University Physiotherapy and Rehabilitation Application and Research Center (İSÜFİZYOTEM); Istanbul, Turkey (Türkiye)