MedTrace Logo

Rate of Leg Curl to Leg Press During Isokinetic Testing

NCT03966690 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 28

Last updated 2019-05-31

No results posted yet for this study

Summary

The functional condition of the leg muscles is not only relevant to performance in sports, but is also of great importance in health, prevention and rehabilitation, where not only the general strength level is decisive but also the relationship between individual muscle groups. Among other things the H-Q-ratio (strength ratio of "hamstring" muscles to quadriceps muscles) is often used to diagnose possible imbalances. Isokinetic force measurements have established themselves as the gold standard in competitive football. In this context, however, force tests in the open kinetic chain (OKC) have almost exclusively been used so far. Especially force measurements in the closed kinetic chain (CKC) could have a higher relevance regarding functionality. The H-Q-ratio should better be called the flex-ext-ratio in the CKC due to the involvement of the hip muscles. There is little data in the literature on leg force or flex-ext-ratio in CKC. In particular, there is hardly any comparative data for isokinetic measurement systems in the CKC. Using a cross over design and randomly allocating 28 competitive football players into two groups (n=14 each) that either started tests with the leg press or legcurl device, the investigators assumed (1) a significantly lower flex-ext-ratio in the CKC compared to the OKC, (2) a correlation between the isokinetic measurement systems in the OKC and the CKC, and (3) a significant superiority of the leg press to predict functional performance of the lower limbs.

Conditions

  • Muscle Strain

Interventions

DEVICE

Isokinetic leg extension/-flexion on a legpress device

Maximum strength and rate of leg-flexion /-extension during legpress exercise

DEVICE

Isokinetic leg extension/-flexion on a legcurl device

Maximum strength and rate of leg-flexion /-extension during legcurl exercise

Sponsors & Collaborators

  • University of Erlangen-Nürnberg Medical School

    lead OTHER

Principal Investigators

  • Wolfgang Kemmler, PhD · Institute of Medical Physics, University of Erlangen-Nürnberg, Germany

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
35 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-08-15
Primary Completion
2019-02-15
Completion
2019-05-15

Countries

  • Germany

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03966690 on ClinicalTrials.gov