Energy Expenditure Responses to Acute Exercise in Older Women (Calorie Expenditure and Exercise) (CEE)

This study has been completed.
Sponsor:
Collaborator:
Information provided by (Responsible Party):
Washington University School of Medicine
ClinicalTrials.gov Identifier:
NCT00988299
First received: October 1, 2009
Last updated: December 2, 2011
Last verified: December 2011
  Purpose

In older, normal-weight women (60-75 yrs, BMI=18-28 kg/m2), an acute bout of higher-intensity (60% of maximum effort) aerobic exercise, in comparison to an isocaloric bout of lower-intensity (45% of maximum effort) exercise (caloric expenditure of 3.5 kcal/kg body weight for both), will result in differential:

  1. decline in non-exercise activity calorie expenditure in the subsequent 48 hours after exercise;
  2. increase in resting metabolic rate 48 hours after exercise;
  3. increase in serum free triiodo-L-thyronine (free T3) concentrations immediately following exercise;
  4. decline from pre-exercise in plasma leptin and serum free T3 concentrations 48 hours after exercise.

Condition Intervention
Aging
Other: exercise

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Official Title: Energy Expenditure Responses to Acute Exercise in Older Women

Resource links provided by NLM:


Further study details as provided by Washington University School of Medicine:

Primary Outcome Measures:
  • non-exercise activity calorie expenditure [ Time Frame: 2 days after exercise sessions ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • resting metabolic rate [ Time Frame: 2 days after exercise sessions ] [ Designated as safety issue: No ]

Enrollment: 26
Study Start Date: October 2009
Study Completion Date: December 2011
Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Other: exercise
    exercise sessions at 45% and 60% of maximum effort
  Eligibility

Ages Eligible for Study:   60 Years to 75 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  1. Women
  2. Age 60-75 years
  3. normal weight
  4. Weight-stable (± 5%) within the previous 3 months
  5. Non-smoking for last year
  6. Able to provide own transportation to study visits
  7. Not currently involved in any other research study
  8. Willing and able to participate in all aspects of the trial including research testing
  9. Willing to give informed consent to participate

Exclusion Criteria:

  1. Self-reported significant cardiovascular disease
  2. Other self-reported medical conditions such as diabetes, chronic or recurrent respiratory conditions, active cancer, musculoskeletal disease
  3. Medications known to affect exercise performance or metabolism
  4. Excess caffeine use (> 500mg/day)
  5. Any self-reported contraindications to exercise
  6. Clinical depression
  7. Abnormal cognitive function -
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00988299

Locations
United States, Missouri
Washington University School of Medicine
St. Louis, Missouri, United States, 63110
Sponsors and Collaborators
Washington University School of Medicine
Investigators
Principal Investigator: Xuewen Wang, PhD Washington University School of Medicine
  More Information

No publications provided

Responsible Party: Washington University School of Medicine
ClinicalTrials.gov Identifier: NCT00988299     History of Changes
Other Study ID Numbers: 09-0864, K99AG031297
Study First Received: October 1, 2009
Last Updated: December 2, 2011
Health Authority: United States: Institutional Review Board

Keywords provided by Washington University School of Medicine:
older
NEAT
exercise
RMR
energy expenditure

ClinicalTrials.gov processed this record on April 17, 2014