Four Weeks of Nordic Hamstring Exercises Impact the Strength and Balance of the Hamstring Muscle Group

Active, not recruiting

• Conditions: Hamstring Injury
• Interventions: Other: Nordic hamstring exercise

• Registration Number: NCT06382597
• Lead Sponsor: Gdansk University of Physical Education and Sport

Brief Summary

The aim of the study is to assess the impact of 4 weeks of eccentric Nordic Hamstring Exercise training on changes in the hamstring muscle group, as well as to analyze parameters such as maximum muscle strength of the knee flexors, RFD (rate of force development) and static balance, dynamics for the dominant leg.

Detailed Description

Research procedure: Nordic Hamstring Exercise training covers a period of 4 weeks, during which the volunteer exercises 3 times a week for 3 sets, each set consisting of 3 repetitions of NHE. Before starting eccentric exercises, you will warm up for 15 minutes. After each series, there will be a 2-minute passive break, during which the subject will rest. In the first week, the subject will exercise under the supervision of the instructor, in the next three weeks the subject will exercise at home after prior instruction.

Study Timeline

• Status Verified: 2024-04
• Study First Submitted: 2024-04-18
• Study First Submitted QC: 2024-04-23
• Study First Posted: 2024-04-24
• Study Start: 2024-07-02
• Last Update Submitted: 2024-07-17
• Last Update Posted: 2024-07-18
• Primary Completion: 2024-08-27
• Study Completion: 2024-08-30

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 2

Inclusion Criteria

• healthy people aged 19-26,
• no injuries,
• athletes, people practicing sports as amateurs

Exclusion Criteria

• during the period of greatest training load related to the discipline,
• overload changes in the joints: knee, hip and lumbar-sacral,
• pain,
• muscle fatigue, overtraining,
• in strength sports a few weeks before the start,
• inflammation of the osteoarticular and ligamentous elements of the lower limbs,
• previous injuries, surgical procedures within 6 months before the intervention

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Nordic Hamstring Exercise	Nordic hamstring exercise	The subjects will be randomly divided into two research groups. The first research group will undergo a 4-week Nordic Hamstring Exercise training, the second research group will be a control group performing traditional exercises.

Primary Outcome Measures

Name	Time	Method
Biodex Balance System	15 min	The medial-lateral stability index (MLSI), anteroposterior stability index (APSI) and general static and dynamic stability index will be assessed for both limbs and the dominant leg

Secondary Outcome Measures

Name	Time	Method
Biodex System	20 min	The maximum muscle strength of the hamstring group will be assessed for both legs

Trial Locations

Locations (1)

Academy of Physical Education in Gdańsk; 🇵🇱 Gdańsk, Poland