Obesity Clinical Trial
Official title:
Effects of Different Frequency Low-volume Resistance Training on Body Fat in Obese Older: A Randomized Controlled Trial
Verified date | December 2017 |
Source | Universidade Estadual de Londrina |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This study compared different frequency low-volume resistance training (RT) on total, android, gynoid and trunk body fat in obese older women
Status | Completed |
Enrollment | 63 |
Est. completion date | July 24, 2015 |
Est. primary completion date | July 6, 2015 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Female |
Age group | 60 Years and older |
Eligibility |
Inclusion Criteria: - 60 years of age or older; - relative body fat = 32 assessed by whole body dual-energy X-ray absorptiometry (DXA); - physically independent; - free from cardiac or orthopedic dysfunction that would have precluded them from performing the tests or the training program associated with the study; - not receiving hormonal replacement therapy; - not performing physical exercise more than once a week in the six months preceding the beginning of the investigation. Exclusion Criteria: • All subjects not participating in 85% of the total sessions of training or withdrawl |
Country | Name | City | State |
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n/a |
Lead Sponsor | Collaborator |
---|---|
Universidade Estadual de Londrina |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in body composition | Whole-body dual-energy X-ray absorptiometry (DXA) scans (Lunar Prodigy, model NRL 41990, GE Lunar, Madison, WI) were used to assess total body fat, trunk fat, gynoid fat and android fat. Prior to scanning, participants were instructed to remove all objects containing metal. Scans were performed with the subjects lying in the supine position along the table's longitudinal centerline axis. Feet were taped together at the toes to immobilize the legs while the hands were maintained in a pronated position within the scanning region. Both calibration and analysis were carried out by a skilled laboratory technician. Equipment calibration followed the manufacturer's recommendations. The software generated standard lines that set apart the limbs from the trunk and head. These lines were adjusted by the same technician using specific anatomical points determined by the manufacturer. The results are presented in kilograms (kg) | baseline and 12 weeks | |
Primary | Change in fat z-score | A composite z-score, was calculated using the following formula: (total body fat z-score) + (gynoid body fat z-score) + (android fat z-score) / 3. Z-scores were obtained from the DXA using standard software. | baseline and 12 weeks | |
Secondary | Changes in Anthropometry Parameters | Body mass was measured to the nearest 0.1 kg using a calibrated electronic scale (Balmak, Laboratory Equipment Labstore, Curitiba, Paraná, Brazil), with the participants wearing light workout clothing and no shoes. Height was measured with a stadiometer attached to the scale to the nearest 0.1 cm, with subjects standing without shoes. These parameter will be combined to report body mass index that will be calculate as body mass in kilograms divided by the square of height in meters. | baseline and 12 weeks | |
Secondary | Changes in Dietary intake | Participants were instructed by a dietitian to complete a food record on three nonconsecutive days (two week days and one weekend day) pre- and post-intervention. Participants were given specific instructions regarding the recording of portion sizes and quantities to identify all food and fluid intake, in addition to viewing food models in order to enhance precision. The amount of protein, carbohydrate, and lipid were calculated using nutrition analysis software (Avanutri Processor Nutrition Software, Rio de Janeiro, Brazil; Version 3.1.4). The sum of the three macronutrients will be presented by total energy intake which will be expressed per kcal/kg per day. | baseline and 12 weeks | |
Secondary | Changes in Total Strength | Maximal dynamic strength was evaluated using the one repetition maximum (1RM) test assessed in the chest press, knee extension, and preacher curl exercises, performed in this exact order. Testing for each exercise was preceded by a warmup set (6-10 repetitions), with approximately 50% of the estimated load used in the first attempt of the 1RM. This warmup was also used to familiarize the subjects with the testing equipment and lifting technique. The testing procedure was initiated 2 minutes after the warm-up. The subjects were instructed to try to accomplish two repetitions with the imposed load and were given three attempts in both exercises. The rest period was 3 to 5 min between each attempt, and 5 min between exercises. The 1RM was recorded as the final load lifted in which the subject was able to complete only one single maximal execution. Total strength was determined by the sum of the 3 exercises, expressed in kg. | baseline and 12 weeks |
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