Effect of Protein Supplementation on Body Composition, Muscle Strength and Postural Balance in Elderly Type II Diabetes Subjects Undergoing Resistance Training
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Diabetes Mellitus, Type 2
- Sponsor
- University of Sao Paulo General Hospital
- Enrollment
- 40
- Locations
- 1
- Primary Endpoint
- Muscular strength (hand grip) change from baseline
- Last Updated
- 7 years ago
Overview
Brief Summary
Nutritional interventions witch stimulate the rate of muscle protein synthesis are relevant for the development of therapeutic strategies aimed at attenuating the loss of mass and muscle strength related to aging (sarcopenia). To aim of the study is to investigate the effect of protein supplementation on body composition, muscle activity, muscle strength and plasma concentration of inflammatory biomarkers of elderly with type II diabetic, submitted to 12 weeks of resistance training. This is an interventional, controlled, randomized, double-blind study. The population of the present study will be composed of 40 men with type 2 diabetes aged between 70 and 74 years, whose body mass index (BMI) should be between 22 and 32 kg / m2. It will be composed of patients from the Diabetes Outpatient Clinic of the Endocrinology Department at the Medical School of the University of São Paulo. Elderly subjects will be randomized into two groups (n = 20) who will undergo resistance training for 12 weeks, twice a week, and receive protein or placebo supplementation. Exercises will be performed for the large muscle groups: pectoral press, paddling, leg-press, extensor chair, gastrocnemius plantar flexions and abdominal crunches. Protein supplementation will be performed immediately after strength training by ingestion of 20 g of whey protein diluted in water. Also, immediately after training the placebo group will receive 20 g of maltodextrin diluted in water. All participants will be instructed to ingest 1.0 to 1.2 g of protein / kg of body weight per day. 24-hour food recall and food frequency questionnaires will be performed throughout the study. The following evaluations (before and after 12 weeks training) will be applied: Anthropometric: body mass, height, BMI and hip waist ratio. Functional evaluation through isokinetic dynamometry of knee extensors and flexors and a maximal repetition (1RM). Evaluation of body composition through Bioimpedance balance. Evaluation of food intake will be obtained by means of a 24-hour recall and food frequency questionnaire. All the evaluations will performed after 6 months. The training sessions will have a frequency of twice a week for 12 weeks. Eight exercises will be performed for the main muscle groups. In each exercise, 3 sets will be performed between 8 and 12 repetitions. The intensity should be between 7 - 8 and will be monitored according to Subjective Effort Perception using a scale of 0 to 10.
Detailed Description
Eligibility Criteria: Diabetes mellitus type 2 with stable dose of medication (oral antidiabetic or insulin or combination of both) for three months or more. Glycated hemoglobin between 6 and 8.5% Renal function assessed by MDRD above 60 ml / h AST and ALT up to 2.5 times the upper limit of the No involvement of the musculoskeletal system with pain and any type of incapacitating disease or previous surgeries. No chronic non-communicable disease not treated properly and decompensated Renal function assessed by MDRD equal to or above 60 ml / h
Investigators
Eligibility Criteria
Inclusion Criteria
- •Diabetes mellitus type 2 with stable dose of medication (oral antidiabetic or insulin or combination of both) for three months or more.
- •Glycated hemoglobin between 6 and 8.5%
- •Renal function assessed by MDRD above 60 ml / h
- •AST and ALT up to 2.5 times the upper limit of the
- •No involvement of the musculoskeletal system with pain and any type of incapacitating disease or previous surgeries.
- •No chronic non-communicable disease not treated properly and decompensated
- •Renal function assessed by MDRD equal to or above 60 ml / h
Exclusion Criteria
- •Impossibility to conduct evaluation and training efficiently
Outcomes
Primary Outcomes
Muscular strength (hand grip) change from baseline
Time Frame: This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.
Evaluation of muscular strength improvement- hand grip strength (HGS). HGS assessment was performed using a Jamar hand dynamometer, measured in kilograms (kg), which is adopted by the American Society of Hand Therapists.
Muscular strength (peak of torque) change from baseline
Time Frame: This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.
Isokinetic dynamometry will be use to determine knee extension and flexion strength using the Biodex Multi-Joint System 3 (Biodex MedicalTM, Shirley, NY, USA). The isokinetic variables used was maximum peak torque corrected for body weight (%).
Muscular strength (total work) change from baseline
Time Frame: This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.
Isokinetic dynamometry will be use to determine knee extension and flexion strength using the Biodex Multi-Joint System 3 (Biodex MedicalTM, Shirley, NY, USA). The isokinetic variables used was total work (J).
Postural Balance (sway velocity) change from baseline
Time Frame: This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.
The postural balance assessment (posturography) was performed on the NeuroCom Balance Master® force platform system (NeuroCom International, Inc., Clackamas, Oregon, USA). The parameter measured was the center of gravity (COG) sway velocity while rising. The COG sway velocity documented the degree of control over the COG above the support base during the rising phase and for 5 seconds thereafter. Sway was expressed in degrees per second.
Postural Balance (weight transfer) change from baseline
Time Frame: This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.
The postural balance assessment (posturography) was performed on the NeuroCom Balance Master® force platform system (NeuroCom International, Inc., Clackamas, Oregon, USA). The parameter measured was the mean weight transfer. The weight transfer was the time in seconds required to voluntarily shift the COG forwards, beginning in the seated position and ending with full weight-bearing on the feet.
Secondary Outcomes
- Inflammatory biomarkers - plasma concentration change from baseline (Interleukin 6)(This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise).)
- Portable Bioelectrical Impedance change from baseline(This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise) and after 6 months.)
- Inflammatory biomarkers - plasma concentration change from baseline (Tumor necrosis factor-alpha)(This measure will be perform before and after the intervention (12 weeks muscular strenght and postural balance exercise).)