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Force Enhancement of Musculus Quadriceps Femoris During and After Excentric Muscle Activity in Vivo

NCT00690547 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 60

Last updated 2009-11-30

No results posted yet for this study

Summary

Force enhancement (FE) describes the phenomenon of strength potentialization of a muscle cell or the complete muscle during and after active extension compared to the strength of an isometric contraction with same muscle length. The underlying physiological mechanism of this phenomenon is not completely known today. In vitro trials indicate that the interaction of an active and a passive component on the cellular level are responsible for the higher strength measurements. So far FE could be shown in vitro and in vivo on muscle fibers and small human muscles. Further research is needed for verification of the existence of FE in voluntary motor activity in everyday life. In order to approach this objective the investigators will scrutinize the functionality of the deliberately activated musculus (m) quadriceps femoris during and after active extension on the basis of in vivo studies.

Conditions

  • Muscle Quadriceps Femoris
  • Healthy

Interventions

OTHER

muscle activation

activation of the muscle quadriceps femoris

Sponsors & Collaborators

  • German Research Foundation

    lead OTHER

Principal Investigators

  • Ansgar Schmirtz, Prof. Dr. · Technical University of Munich, Department of Biomechanics in Sports

Eligibility

Min Age
20 Years
Max Age
40 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2008-10-31
Primary Completion
2010-10-31
Completion
2010-10-31

Countries

  • Germany

Study Locations

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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 NCT00690547 on ClinicalTrials.gov