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Physical training is one of the cornerstones within the treatment of diabetes, as well as medicine and diet modification, and the effect is well documented. Nevertheless people with diabetes with foot ulcers are urged to lessen their level of physical activity, to reduce pressure on footbed and thereby achieve fastest possible healing.
Purpose: The primarily purpose is to investigate the feasibility of implementing safe, progressive resistance training, combined with exercises for ankle mobility and aerobic training, for people with diabetes and foot ulcers, without compromising the ulcer. The secondarily purpose is to investigate whether this form of training is effective on improving muscle strength, as to if limitations in everyday life diminishes.
The hypothesis is, that it is possible to implement a structured exercise program without compromising the diabetic ulcer.
Full description
Background:
Physical training is one of the cornerstones within the treatment of diabetes, as well as medicine and diet modification, and the effect is well documented in terms of improved glycemic control, loss of fat tissue, lower content of triglycerides in blood, improved insulin sensitivity, and lower diabetes related mortality. Nevertheless people with diabetes and foot ulcers are urged to lessen their level of physical activity, to reduce pressure and thereby achieve fastest possible healing. Most ulcers occur at the footbed and the rationale is that the pressure on the ulcer area should be minimized to achieve healing.
Purpose: The primarily purpose of the study is to investigate the feasibility of implementing progressive resistance training, combined with exercises for ankle mobility and aerobic training, for people with diabetes and foot ulcers, without compromising the ulcer. The secondarily purpose is to investigate whether this form of training is effective on the following:
Material and methods:
Independent variables:
Dependant variables with registration of following parameters at baseline and at end of program:
Collecting data:
Data will be registrated in two phases: at phase 1(pilot study)with 10 participants, and at phase 2 (RCT study), with suitable amount of participants based on power calculations after revision of methods based on experiences from the pilot study. For all participants the program includes two attendances at inclusion and at the end of program. First examination takes place at Copenhagen University Hospital Hvidovre,and includes measuring toe pressure and level of glucoses(HbA1c). Second examination includes measuring of area of ulcer by nurse and assessment of neuropathy, muscle strength, aerobic function, and screening for performing activities in daily life by physiotherapist, at Rehabilitation Centre Vanloese. Same examinations take place at end of program.
Phase 1(feasibility of exercise program):
After initial examinations, 10 participants with foot ulcers participates in standardized group training for 10 weeks, for one hour, twice a week. The program consists of warming-up and aerobic exercise on stationary bike(15 min), with submaximal training at 60-70%, estimated with Borg Scale. Resistance is low to minimize weightbearing on footbed and participants will instead strive for high cadence to achieve appropriate effect from exercise. The resistance training part of the program (35 min) will include training in exercise equipment for the following muscle groups:
In no exercise equipment is there pressure on footbed. Resistance level is 15 RM for the first three weeks and hereafter is progression up to 10RM sought.
Strengthening of ankle dorsiflexors with resistance from elastic band is also part of resistance exercises.
The last part of each exercise occasion(10 min) consists of exercises for ankle joint mobility (flexion, dorsiflexion, inversion, eversion). The prescribed ulcer treatment by nurse continues as usual.
Phase 2:
With revised manual a larger study will be implemented and by computerized block randomization, to equally sized groups with all new participants, whereas the intervention group follows the revised, standardized training program as in phase 1, besides the prescribed ulcer treatment by nurse, and the control group follows prescribed ulcer treatment and maintains usual activity level.
For phase 2 the primarily effect target is whether resistance- and aerobic training in a population of people with diabetes with foot ulcers shows effect on muscle strength, aerobic function and balance.
The statistical analysis will be repeated measures variance analysis (ANOVA) for determining effect of resistance- and aerobic training as balance score between baseline and at end of program.
3.8 Data processing and analysis: Data will be collected and entered to SPSS by project manager. Statistical analysis will be repeated measures variance analysis (ANOVA) for determining effect of resistance- and aerobic training.
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Data sourced from clinicaltrials.gov
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