Strengthening Effect on Hamstring's Passive Mechanical Properties

Not Applicable

Completed

• Conditions: Sports Physical Therapy
• Interventions: Other: Nordic Eccentric exercise; Other: Neuromuscular Electrical Stimulation; Other: Concentric Exercise

• Registration Number: NCT03884738
• Lead Sponsor: Hacettepe University

Brief Summary

The purpose of this study was to investigate effects of different strengthening methods on hamstring muscle group's passive mechanical properties and to investigate this effect's relation with performance changes in healthy individuals. 42 healthy sedentary male participated in this study. Passive mechanical properties and strength of hamstring and quadriceps muscles, flexibility of hamstring muscles, anaerobic explosive strength, reaction time, agility were measured. Participants randomized evenly into one of three groups; eccentric, concentric and neuromuscular electrical stimulation (NMES). After 8 weeks training period, participants were measured again.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2019-03-18
• Study First Submitted QC: 2019-03-20
• Study Start: 2019-03-21
• Study First Posted: 2019-03-21
• Primary Completion: 2019-12-01
• Study Completion: 2019-12-01
• Status Verified: 2020-04
• Last Update Submitted: 2020-04-20
• Last Update Posted: 2020-04-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 42

Inclusion Criteria

• being sedentary

Exclusion Criteria

• Having knee, hip and/or back pain
• Having a cardiovascular condition/disease
• History of previous knee and/or hip surgery
• Having a diagnose of any systemic disease
• History of previous hamstring injury
• Being physically active within last year ( Regular activity at least 3 days a week and continuity of at least 2 months was accepted as being physically active)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Eccentric	Nordic Eccentric exercise	Nordic Hamstring Training
Neuromuscular Electrical Stimulation	Neuromuscular Electrical Stimulation	Stimulation Training
Concentric	Concentric Exercise	Leg Curl Training

Primary Outcome Measures

Name	Time	Method
Passive Mechanical Properties	Change from baseline passive mechanical properties at 8 weeks	Tone, Elasticity and Stiffness evaluation. Evaluated with Myotonometer-3

Secondary Outcome Measures

Name	Time	Method
Flexibility Measurement	Change from baseline flexibility at 8 weeks	Sit and reach test was used for hamstring flexibility
Agility Measurement	Change from baseline agility time at 8 weeks	Illinois Agility Test was used for agility measurement
Reaction Time	Change from baseline reaction time at 8 weeks	ruler drop test was used for reaction timing
Anaerobic Explosive Power	Change from baseline anaerobic explosive power at 8 weeks	Jump and Reach test was administered
Muscle Strength Measurement	Change from baseline muscle strength at 8 weeks	Hamstring and Quadriceps strength were measured with LaFayette Manuel Muscle Tester

Trial Locations

Locations (1)

Hacettepe University; 🇹🇷 Ankara, Turkey