A System for Lengthening Contraction Training of Muscle

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT00575107

Acronym

LCT

Enrollment

Registered

2007-12-18

Start date

2007-09-30

Completion date

2009-12-31

Last updated

2011-08-04

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

Conditions

Healthy

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.

Interventions

OTHERExercise

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

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

PREVENTION

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

65 Years to 80 Years

Healthy volunteers

Yes

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.

Design outcomes

Primary

Measure	Time frame
Leg strength	16 weeks

Secondary

Measure	Time frame
Ability to rise from a chair	16 weeks

Countries

United States

Outcome results

None listed

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