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A Comparison of Weighted Vest Exercise and Strength Training

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00158119
Recruitment Status : Completed
First Posted : September 12, 2005
Last Update Posted : July 26, 2010
Spaulding Rehabilitation Hospital PM&R
Information provided by:
National Institute on Aging (NIA)

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.

Condition or disease Intervention/treatment Phase
Mobility Limitations Aging Behavioral: InVEST (Increased Velocity Exercise Specific to Task) Phase 3

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 Type : Interventional  (Clinical Trial)
Enrollment : 160 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single
Primary Purpose: Treatment
Official Title: Ameliorating Disability Through Power Training
Study Start Date : July 2001
Actual Primary Completion Date : September 2007
Actual Study Completion Date : September 2007

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Leg power
  2. leg strength
  3. mobility
  4. endurance
  5. balance measured at baseline, 8 weeks, and 16 weeks

Secondary Outcome Measures :
  1. Disability

Information from the National Library of Medicine

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Ages Eligible for Study:   65 Years and older   (Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

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

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00158119

United States, Massachusetts
Spaulding Cambridge Outpatient Center
Cambridge, Massachusetts, United States, 02138
Sponsors and Collaborators
National Institute on Aging (NIA)
Spaulding Rehabilitation Hospital PM&R
Principal Investigator: Jonathan F. Bean, MD, MS Spaulding Cambridge Outpatient Center

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00158119     History of Changes
Other Study ID Numbers: AG0037
K23AG019663-01 ( U.S. NIH Grant/Contract )
First Posted: September 12, 2005    Key Record Dates
Last Update Posted: July 26, 2010
Last Verified: July 2010

Keywords provided by National Institute on Aging (NIA):
strength training
power training
exercise training
functional performance tasks

Additional relevant MeSH terms:
Mobility Limitation
Signs and Symptoms