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Maintaining Resistance Training in Older Prediabetic Adults

2014-08-27 03:14:06 | BioPortfolio

Summary

The aim of this Phase II Clinical Trial is to demonstrate the efficacy of social cognitive theory (SCT) based intervention for initiating, and most importantly, maintaining resistance training in older adults with pre-diabetes (i.e., impaired glucose tolerance or impaired fasting glucose) to improve blood glucose regulation.

Description

The aim of this Phase II Clinical Trial is to demonstrate the efficacy of social cognitive theory (SCT) based intervention for initiating, and most importantly, maintaining resistance training in older adults with pre-diabetes (i.e., impaired glucose tolerance or impaired fasting glucose) to improve glucose homeostasis. The overall aim is consistent with NIDDK's Behavioral/Prevention Research Program's focus on individual, family, and community-based strategies for prevention of diabetes and its complications. Resistance training is particularly applicable to older, pre-diabetic adults given the loss of lean body mass and worsening of glucose tolerance with aging. The proposed research program evaluates a 15-month SCT based intervention for maintenance of resistance training with older adults. Men and women 50-69 (N=180) with pre-diabetes, defined as exhibiting either impaired glucose tolerance (IGT; 2-h glucose 140-199 mg/dl) or impaired fasting glucose (IFG; 100-125 mg/dl), will first follow the same standard, supervised 3-month initiation period with resistance training. All people completing the Initial Phase will be randomly assigned to 1 of 2 maintenance conditions: 1. a long-term SCT based, ASPIRE intervention, emphasizing self-regulation and other SCT strategies to optimize training, with faded contact; 2. a Standard intervention with minimal contact. The primary outcome measures are indices of pre-diabetes (glucose tolerance and fasting glucose concentration) and strength. Secondary measures include adherence; ß-cell responsivity, insulin sensitivity, and disposition index, as determined by the oral glucose and C-peptide minimal model; fat free mass, other indicators of health and metabolic fitness, and SCT measures. Assessments will occur at baseline, at the end of the Initiation Phase (3 months), at the end of the different interventions (9 months) and 6 months after all contact has ended (15 months from baseline). It is hypothesized that SCT based resistance training with faded contact will produce better outcomes than the Standard-based resistance training at 9 month and 15 month assessments. It also is hypothesized that improvements in glucose homeostasis and in strength from resistance training will be mediated by adherence, self-efficacy, and use of self-regulation strategies. Resistance training has become an important component in the treatment and prevention of diseases and disabilities, and especially so for Type 2 diabetes. Critical to public health and a focus of NIDDK are theory-based interventions that enable, effective long-term resistance training with minimal supervision after an initiation phase and where improvements in adherence and outcomes are facilitated by theoretical constructs.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Prevention

Conditions

Diabetes

Intervention

SCT-based Resistance Training exercise program, Standard Intervention with minimal contact

Location

Virginia Tech
Blacksburg
Virginia
United States
24061

Status

Not yet recruiting

Source

Virginia Polytechnic Institute and State University

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:14:06-0400

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A type of strength-building exercise program that requires the body muscle to exert a force against some form of resistance, such as weight, stretch bands, water, or immovable objects. Resistance exercise is a combination of static and dynamic contractions involving shortening and lengthening of skeletal muscles.

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