Efficacy of Flywheel Inertial Resistance Training in the Architecture and Function of the Hamstring

NCT04050813 | Completed

• 1 other identifier: HSMI MSampietro Tesis
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief Summary

Investigate the efficacy of the inercial Flywheel training protocol in modifying the architecture and function of the hamstrings in patients with a history of structural muscle injury vs conventional training. The researchers hypothesize that inercial Flywheel training protocol will be a useful strategy in the modification of the architecture and function of the hamstring in patients with a history of indirect structural muscle injury and decrease the recurrence.

Conditions

Hamstring Injury

Keywords

Hamstring Injury; Flywheel Inertial Resistance; Hamstring architecture; Ultrasound; Eccentric

Outcome Measures

Primary Outcomes (4)

• Change in the architecture and morphology of the hamstring

  To assess change in architecture and morphology of the hamstring at 8 week. It will be performed by a medical specialist in diagnostic imaging with a A GE Voluson 730 Expert model ultrasound machine , with 6-12 MHz linear transducer. Panoramic images of the long portion of the biceps femoris and semitendinosus will be taken from its proximal insertion, In each muscle, muscle thickness, fascicle length, penetration angle and physiological cross-sectional area will be evaluated.

  0 and 8 week

• Change in Maximun isometric strength

  To assess change in maximum isometric strength of hamstring in Newton (N). It will be measured in 3 repetitions with a hand dynamometer at two knee flexion angles.

  0 and 8 week

• Change in Rate of force development

  To assess change in rate of force development of hamstring in N/seg at 8 week. it will be measured in 3 repetitions with a hand dynamometer at two knee flexion angles.

  0 and 8 week

• Change in Maximun eccentric strength

  To assess the maximum eccentric strength of hamstring in Newton (N) from basiline. It will be measured in 3 repetitions with a hand held dynamometer.

  0 and 8 week

Secondary Outcomes (7)

• Change in Oslo hamstring injury screening questionnaire

  0 and 8 week

• Functional scale of the lower limb

  In the week before the 1st session of the protocol

• Adverse events

  week 8

• Adherence self-report questionnaire

  week 8

• Maximum Hip Flexion Active Knee Extension (MHFAKE) Test

  0 and 8 week

Study Arms (2)

Control

EXPERIMENTAL

The program is performed 2 times per week using resistance equipment in a physiotherapy clinic. Each session consists of on 2-legged loaded exercises for hamstring, quadriceps, gluteus maximun and core. The patients complete 3 or 4 sets in each exercise with a 2- to 3-minute rest between sets and a 5-minute rest period between the 4 exercises. The number of repetitions decreases, and load gradually increases, every week. The repetitions and loads are as follows: 3 set of 12-repetition maximum (12RM), in week 1 and 2; 3 set of 10 RM, in week 3 and 4; 4 set of 10RM, in weeks 5 and 6; and 4 set of 8RM, in weeks 7 to 8.

Behavioral: Exercises program for hamstring architecture and function

Intervention

EXPERIMENTAL

Experimental: Inertial flywheel resistance training The program is performed 2 times per week using resistance equipment in a physiotherapy clinical. Inertial flywheel resistance is a type of strength training; which is based on the increasing demands on eccentric action (breaking) after a concentric action (acceleration), due to the inertial load caused during the return movement. The patients complete 16 repetition maximum (RM) with moment inertia 0.05 m² from week 1-2, 24 repetition maximum (RM) with moment inertia = 0.10 m² from week 3 to 4. 32 repetition maximum (RM) with moment inertia = 0.10 m² from week 5 to 6 and 32 repetition maximum (RM) with moment inertia = 0.13 m² in a flywheel hamstring curl devise.

Behavioral: Exercises program for hamstring architecture and function

Interventions

Exercises program for hamstring architecture and function BEHAVIORAL

To assess the effectiveness of the inertial flywheel resistance program in the architecture and function of the hamstrings post structural hamstring injury

Control; Intervention

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: male
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• Adults with history of structural muscle injuries type 3 of the Munich Consensus classification for muscular injuries, confirmed by imaging diagnosis no more than 2 years ago.
• The patient must have performed conventional medical and physiotherapy treatment
• Have Returned to their usual sporting activity
• With good mental health.

You may not qualify if:

• Suffer from a systemic pathology that could alter the healing biology of the muscle.
• Present other lesions in the muscular group of extrinsic characteristic or not encompassed within type 3 structural lesions such as, for example, proximal or distal insertion tendinopathy, use of semitendinous as anterior cruciate ligament graft.
• Prior knee or hip surgery.
• Having been infiltrated with platelet rich plasma in the posterior thigth region in the previus 3 months before startin the study

Sponsors & Collaborators

• Universidad Nacional de Córdoba: lead
• Instituto Oulton: collaborator

Study Sites (1)

Oulton GyMed, Rehabilitación y Gimnasio de Salud

Córdoba, Córdoba Province, 5000, Argentina

Location

MeSH Terms

Interventions

Functional Status

Intervention Hierarchy (Ancestors)

Activities of Daily Living; Rehabilitation; Health Services; Health Care Facilities Workforce and Services; Health Status; Demography; Epidemiologic Measurements; Public Health; Environment and Public Health

Study Officials

• Vilma Campana, Phd

  Departments of Biomedical Physics - University of Cordoba Argentina

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: August 5, 2019
• First Posted: August 8, 2019
• Study Start: October 8, 2019
• Primary Completion: November 8, 2022
• Study Completion: December 8, 2022
• Last Updated: March 27, 2025

Record last verified: 2025-03

Data Sharing

• IPD Sharing: Will not share

Locations

AR (1)