Effects of Hamstrings Strengthening in Proffesional Athlets

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04257591

Enrollment

Registered

2020-02-06

Start date

2019-12-02

Completion date

2020-03-10

Last updated

2020-05-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Exercise, Hamstring Injury

Keywords

exercise, therapeutics, prevention

Brief summary

Athelts that meet the inclusion criteria will be randomized into two groups. The experimental group will receive an 8-week (3 days per week) specificl protocol based on hamstring strengthening (isometric, concentric and excentric exercises), and the control group will not receive any additional exercise. The aim of the study is to investigate the changes in hip and knee muscle strength, in the extensibility of cuadriceps, hamstrings and hip abductors, in the physical functions and in the final marks.

Interventions

OTHERhamstring strengthening

A progressive and individualized hamstring strengthening protocol

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Outcomes Assessor)

Masking description

Single-blind

Eligibility

Sex/Gender

ALL

Age

18 Years to 25 Years

Healthy volunteers

Inclusion criteria

* Professional Athlet * 3 or more trainign days * Previous hamstring injury but without symptoms for 3 months or \>30% difference between cuadriceps and hamstrings strength (considered as a risk for hamstring injury)

Exclusion criteria

* Sistemic pathologies * Any other type of musculoskeletal injuries in lower limb or lumbar spine * To have a previous specific protocol * To skip more than 3 training days * General contraindications for physical activity

Design outcomes

Primary

Measure	Time frame	Description
muscle strength	Baseline	the examiners assess the muscle strength using a hand-held dynamometer (model 01165) for hip and knee muscles
muscle extensibility	Baseline	the examiners assess the extensibility of the hip flexors, abductors and extensor muscles

Secondary

Measure	Time frame	Description
Physical function	Baseline	the examiners assess the physical function using vertical jump test
Mark	Baseline	the examiners assess the marks in competition
Number of hamstring injuries	Baseline	the examiners assess the number of hamstring injuries

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026