NCT03423108

Exercise Dose-response for Diabetes in the Elderly

Exercise Dose-response for Diabetes in the Elderly: a Randomized Clinical Trial.

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 132 (estimated)
• Sponsor: Hospital de Clinicas de Porto Alegre · Academic / Other
• Sex: All
• Age: 60 Years
• Healthy volunteers: Not accepted

Summary

One-center randomized, three-arm, parallel, superiority, controlled trial in 132 elderly outpatients with type 2 diabetes. Two different combined exercise training doses (300min/week vs 150min/week) will be compared against usual care. The entire study length will last 24 weeks, and assessments will be conducted at baseline, previously to the group allocation, at 12 weeks and at 24 weeks just after the treatments' end. The study's primary outcome is the glycated hemoglobin level at 24 weeks. Secondary outcomes of clinical relevance to type 2 diabetes and elderlies will also be acquired.

Detailed description

This study is a randomized controlled trial, three-arm parallel-group. The first aim is to evaluate the efficacy of a supervised and structured combined exercise training program in HbA1c levels at 24 weeks. Secondary outcomes measurements of clinical relevance for type 2 diabetes and elderly patients are included at 12 and 24 weeks. The investigators will enroll 132 elderlies divided into three experimental groups, randomized in a ratio of 1:1 (44 patients per group). The treatments arms comprises structured supervised combined exercise training programs, three times a week, lasting 24 weeks of duration. The G150 group will exercise 150 min per week of aerobic and strength training (50 min per session, 25 min for each modality) and the G300 group will exercise twice the volume in the same G150's intensity, and week frequency (100 min per session, 50 min for each modality). No intervention will be offered to the control group (i.e., they will continue their usual care). Treatments arms will progress on training load tailored by their maximal heart rate percentage for aerobic training and maximal repetitions for strength training. The sample size was calculated considering a between-group mean difference of 0.45%, with standard deviation of 0.7% in HbA1c levels, for an 80% of statistical power and 5% of type 1 error, in a superiority hypothesis design. In detail, the primary outcome is the HbA1c level at 24 weeks, an secondary outcomes are: HbA1c levels at 12 weeks; office blood pressure assessed through a digital sphygmomanometer at 12 and 24 weeks; lipid profile (total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides) at 24 weeks; endothelial function assessed by flow-mediated dilation at 12 and 24 weeks; intima-media thickness at 24 weeks; physical fitness assessed by maximal oxygen uptake and maximal muscle strength at 24 weeks; body composition assessed by dual x ray absorptiometry at 24 weeks; quality of life and geriatric depressive symptoms assessed by questionnaires at 24 weeks. The investigators hypothesized that the G300 will greater improve the 24-week HbA1c levels and secondary outcomes against the G150 and the control group. The present study was designed and will be conducted by a multidisciplinary staff, and follows ethical and methodological standards for randomized clinical trials. As for empirical evidence provision, it is expected to highlight the efficacy of the non-pharmacological treatment for type 2 diabetes in the elderly patients.

Conditions

• Type2 Diabetes

Interventions

Type	Name	Description
BEHAVIORAL	G150	This group will receive 150 min/week of combined exercise training, structured and supervised.
BEHAVIORAL	G300	This group will receive 300 min/week of combined exercise training, structured and supervised.

Timeline

• Start date: 2018-09-10
• Primary completion: 2019-01-01
• Completion: 2020-08-01
• First posted: 2018-02-06
• Last updated: 2018-09-06

Locations

1 site across 1 country: Brazil