Circuit Training and Motivational Interviewing to Reduce Type 2 Diabetes in Youth
Summary
The overall goal of this project is to examine the physiological and metabolic effects of a 16-week circuit-training (strength training + aerobic activities) program, with and without a behavioral component utilizing motivational interviewing, in 45 overweight Latina adolescent girls (14-18 years of age). This 16-week randomized control study will examine the incremental effects of the following 3 intervention groups on insulin sensitivity, insulin secretion, adiposity, and habitual and ad libitum physical activity:
- Control group (delayed circuit training intervention; n=15)
- Circuit training group (strength + aerobic training; 2 times per week; n=15)
- Circuit training (same as above) + weekly motivational interviewing sessions (n=15)
Specific Aim 1: To examine the effects of a 16-week circuit training program on adiposity, insulin dynamics, other associated hormones and adipocytokines, cardiorespiratory fitness, and muscular strength in overweight Latina adolescent girls. Hypothesis 1: Participation in the circuit-training program will result in significant improvements in both physiological and metabolic outcomes, including: a) body composition as measured by DEXA, b) fat distribution as measured by MRI, c) adipose tissue hormones (e.g. leptin, adiponectin, TNF-α) as measured by fasting blood samples, d) insulin sensitivity and secretion as measured by frequently sampled intravenous tolerance test, e) aerobic fitness as measured by the single stage submaximal treadmill test, and f) increase muscular strength as measured by repetition maximums.
Specific Aim 2: To examine the incremental effects of adding the motivational interviewing sessions to the circuit training on self-selected ad libitum physical activity during a 5-hour observational period, habitual physical activity levels using 7 day accelerometry, and the meanings and motivation to exercise using questionnaires before and after the intervention. Hypothesis 2: The addition of motivational interviewing will encourage and empower participants to be more active outside of the intervention and foster healthy physical activity behaviors in daily life. Improvements in physical activity behaviors will lead to greater improvements in all other health outcomes listed in specific aim 1 compared to circuit training alone and control group.
Study Design
Allocation: Randomized, Control: Historical Control, Endpoint Classification: Efficacy Study, Intervention Model: Factorial Assignment, Masking: Open Label, Primary Purpose: Prevention
Conditions
Obesity and Type 2 Diabetes
Intervention
Circuit Training, Circuit training + motivational interviewing, Control
Location
Veronica Atkins Lifestyle Intervention Laboratory
Los Angeles
California
United States
90033
Status
Recruiting
Source
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Results (where available)
Links
- Source: http://clinicaltrials.gov/show/NCT00693511
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
Training Support
Financial support for training including both student stipends and loans and training grants to institutions.
Anesthesia, Closed-circuit
Inhalation anesthesia where the gases exhaled by the patient are rebreathed as some carbon dioxide is simultaneously removed and anesthetic gas and oxygen are added so that no anesthetic escapes into the room. Closed-circuit anesthesia is used especially with explosive anesthetics to prevent fires where electrical sparking from instruments is possible.
Inservice Training
On the job training programs for personnel carried out within an institution or agency. It includes orientation programs.
Area Health Education Centers
Education centers authorized by the Comprehensive Health Manpower Training Act, 1971, for the training of health personnel in areas where health needs are the greatest. May be used for centers other than those established by the United States act.
Extracorporeal Circulation
Diversion of blood flow through a circuit located outside the body but continuous with the bodily circulation.
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PubMed Articles
An Evaluation of Training in Motivational Interviewing for Nurses in Child Health Services.
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Nurse-led psychological interventions to improve diabetes control: Assessing competencies.
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