NCT00575107

Brief Summary

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.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
36

participants targeted

Target at P25-P50 for not_applicable healthy

Timeline
Completed

Started Sep 2007

Longer than P75 for not_applicable healthy

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2007

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

December 14, 2007

Completed
4 days until next milestone

First Posted

Study publicly available on registry

December 18, 2007

Completed
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2009

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2009

Completed
Last Updated

August 4, 2011

Status Verified

January 1, 2010

Enrollment Period

2.3 years

First QC Date

December 14, 2007

Last Update Submit

August 3, 2011

Conditions

Healthy

Outcome Measures

Primary Outcomes (1)

  • Leg strength

    16 weeks

Secondary Outcomes (1)

  • Ability to rise from a chair

    16 weeks

Study Arms (2)

VSC-VLC

EXPERIMENTAL

velocity-controlled variable resistance, lengthening contraction

Other: Exercise

SC

ACTIVE COMPARATOR

Constant weight shortening contraction

Other: Exercise

Interventions

ExerciseOTHER

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

VSC-VLC

Eligibility Criteria

Age65 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsOlder Adult (65+)

You may qualify if:

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

You may not qualify if:

  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mobility Research Center

Ann Arbor, Michigan, 48105, United States

Location

MeSH Terms

Interventions

Exercise

Intervention Hierarchy (Ancestors)

Motor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Neil Alexander, MD

    University of Michigan

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER

Study Record Dates

First Submitted

December 14, 2007

First Posted

December 18, 2007

Study Start

September 1, 2007

Primary Completion

December 1, 2009

Study Completion

December 1, 2009

Last Updated

August 4, 2011

Record last verified: 2010-01

Locations

US(1)