A System for Lengthening Contraction Training of Muscle (LCT)

August 3, 2011 updated by: University of Michigan
Evaluation of a new exercise machine designed to improve strength and speed of movement in the leg muscles. Investigators are trying to learn whether a new training method results in greater strength improvements as compared to a traditional method.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

36

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48105
        • Mobility Research Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

65 years to 80 years (Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • healthy
  • able to exercise 3 times per week for 16 weeks at Mobility Research Center

Exclusion Criteria:

  • under- or overweight
  • chronic disease that limits ability to exercise
  • hips and legs limited by arthritis or pain
  • presently engaged in a strenuous exercise program
  • planned absence greater than one week.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: VSC-VLC
velocity-controlled variable resistance, lengthening contraction
Other: Exercise
Velocity-controlled variable resistance protocols enable trainees to load their muscles more optimally along the entire ROM in either or both of the shortening (VSC) and lengthening (VLC) phases of a training repetition
Other: Exercise
Standard training of leg extension
Active Comparator: SC
Constant weight shortening contraction
Other: Exercise
Velocity-controlled variable resistance protocols enable trainees to load their muscles more optimally along the entire ROM in either or both of the shortening (VSC) and lengthening (VLC) phases of a training repetition
Other: Exercise
Standard training of leg extension

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Leg strength
Time Frame: 16 weeks
16 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
Ability to rise from a chair
Time Frame: 16 weeks
16 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Michigan

Collaborators

BioLogic Engineering, Inc.

Investigators

  • Principal Investigator: Neil Alexander, MD, University of Michigan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2007

Primary Completion (Actual)

December 1, 2009

Study Completion (Actual)

December 1, 2009

Study Registration Dates

First Submitted

December 14, 2007

First Submitted That Met QC Criteria

December 14, 2007

First Posted (Estimate)

December 18, 2007

Study Record Updates

Last Update Posted (Estimate)

August 4, 2011

Last Update Submitted That Met QC Criteria

August 3, 2011

Last Verified

January 1, 2010

More Information

Terms related to this study

Other Study ID Numbers

  • 2005-0319

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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