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A Comparison of Weighted Vest Exercise and Strength Training

This study is ongoing, but not recruiting participants.
Information provided by National Institute on Aging (NIA)

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Descriptive Information Fields
Brief Title  A Comparison of Weighted Vest Exercise and Strength Training
Official Title  Ameliorating Disability Through Power Training
Brief Summary

The purpose of this study is to evaluate two types of exercise therapy designed to improve muscle power and mobility: weighted vest exercise vs. progressive resistance training.

Detailed Description

Muscle power, a separate physical attribute from strength, is an important determinate of physical functioning in the elderly, for example in avoiding impending falls, rising from a chair, and climbing stairs. Muscle power, which declines with aging at a different rate than strength, has been shown in previous studies to improve through power training utilizing specially designed exercise equipment. However, weighted vest exercise could provide an acceptable, low cost, readily accessible alternative.

The hypotheses being tested in this study are: 1) weighted vest exercise will improve lower extremity power when compared to age matched controls in a standardized progressive resistance training program; 2) improvements in lower extremity power enhance functional performance as shown by improved gait velocity, stair climbing, and chair rise time; and 3) weighted vest exercise in impaired older adults will improve self-reported function and disability.

One hundred sixty-four men and women ages 65 and older, with some physical limitation but able to climb stairs independently, will be randomized to one of two 16-week exercise programs. The intervention group will participate in a weighted vest exercise protocol, consisting of chair-based and stair-climbing exercise, while the control group will participate in a standardized progressive resistance training program. Participants in both programs will meet three times per week for 30-60 minutes per session, for a total of 16 weeks, at a research exercise gym, and will be under the direct supervision of research staff.

Study Phase Phase III
Study Type  Interventional
Study Design  Treatment, Randomized, Single Blind, Active Control, Parallel Assignment, Safety/Efficacy Study
Primary Outcome Measure  Leg power
leg strength
mobility
endurance
balance measured at baseline, 8 weeks, and 16 weeks
Secondary Outcome Measure  Disability
Condition  Mobility Limitations
Aging
Intervention  Behavioral: InVEST (Increased Velocity Exercise Specific to Task)
MEDLINE PMIDs 11943041,   11982666,   11982665,   15086665,   15221722
Links
Recruitment Information Fields
Recruitment Status  Active, not recruiting
Enrollment  160
Start Date  July 2001
Completion Date August 2006
Eligibility Criteria 

Inclusion Criteria:

  • Community dwelling men and women aged 65 or older
  • Ability to provide informed consent
  • Impairment in physical performance, based on a score between 4 and 10 inclusive on the SPPB (Short Physical Performance Battery), which evaluates standing balance, walking speed, and chair-rise time
  • Score of 24 or greater on the Folstein mini-mental status exam
  • Exhibit independent stair-climbing ability

Exclusion Criteria:

  • Unstable acute or chronic disease
  • Neuromusculoskeletal impairment interfering with independent stair climbing
  • Abdominal aortic aneurysm
  • Exertional angina
  • History of ventricular arrhythmia
  • Inguinal or abdominal hernia
  • Symptomatic valvular heart disease
Gender Both
Ages 65 Years and older
Accepts Healthy Volunteers No
Contacts ††
Location Countries  United States
Administrative Information Fields
NCT ID  NCT00158119
Organization ID AG0037
Secondary IDs †† K23AG019663-01
Study Sponsor  National Institute on Aging (NIA)
Collaborators †† Spaulding Rehabilitation Hospital PM&R
Investigators 
Principal Investigator:     Jonathan F. Bean, MD, MS     Spaulding Cambridge Outpatient Center    
Information Provided By National Institute on Aging (NIA)
Verification Date December 2006
First Received Date  September 7, 2005
Last Updated Date December 12, 2006

 †    Required WHO trial registration data element.
††   WHO trial registration data element that is required only if it exists.




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