BodyPump and Personal Training - Changes in Muscle Strength and Body Composition
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|ClinicalTrials.gov Identifier: NCT01993953|
Recruitment Status : Completed
First Posted : November 25, 2013
Last Update Posted : November 25, 2013
This study is a four armed randomized controlled trial (RCT) where the main purpose is to investigate the effect on muscle strength and changes in body composition in overweight (BMI ˂ 25) "not regularly exercising" women aged 18-65, after 12 weeks of Body Pump (BP), compared with an inactive control group. The study will also measure energy expenditure during one session of BP. At the same time, the project will investigate the effect on muscle strength and changes in body composition in group training with, respective without, a personal trainer (PT).
H0: There's no different between the groups after 12 weeks of Body Pump and traditional strength training with and without a personal trainer on muscle strength and muscle mass in adult overweight females.
H1: There is a different between the groups after 12 weeks of Body Pump and traditional strength training with and without a personal trainer on muscle strength and muscle mass in adult overweight females.
|Condition or disease||Intervention/treatment||Phase|
|Overweight||Other: BodyPump Other: Personal training Other: Resistance training with instructor||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||144 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||Single (Outcomes Assessor)|
|Official Title:||BodyPump and Personal Training - Changes in Muscle Strength and Body Composition|
|Study Start Date :||February 2011|
|Actual Primary Completion Date :||April 2013|
|Actual Study Completion Date :||April 2013|
Active Comparator: BodyPump
Resistance training in group, with one instructor. This pre-choreographed class contains 10 to 12 exercises with a barbell, weights and a step. Number of repetitions throughout the class varies between muscle groups, but is generally high (20-100).
Participants will be offered BP sessions at fitness centers in Oslo/Akershus. They will exercise three times a week. The instructors at all centers have a BP license from Les Mills, and the same program will be conducted at all centers at all times. The project manager has been in contact with Les Mills Scandinavia and has been given permission to use the training concept for research.
Active Comparator: Personal training
The PT will instruct proper technique to their clients, correct the training and technique, control the intensity and serve as a motivator at each training session.
Other: Personal training
Participants in this group will be offered training with a PT at the Norwegian School of Sports Sciences. They will exercise with their PT three times per week. The training program for this group will be based on the exercises in the BP class, but repetitions will vary between 3-15, and series between 2-4.
Active Comparator: Resistance training with instructor
Participants in this group are aimed to perform resistance training individually, based on two sessions with an instructor and a standarized training program given prior to the intervention. After six weeks, all participants in this group received a second instruction, as well as evaluation of the training protocol.
Other: Resistance training with instructor
Participants in this group will be invited to train on their own, three times a week, at the Norwegian School of Sports Science. Prior to the intervention period they will receive a training manual, instructions of the exercises and advice about progression during the intervention period. They will also have a follow-up with the same instructor after six weeks. The training program for this group will be the same as for group B. The PT's from group B will also serve as training instructors.
No Intervention: Controlgroup
Control group - This group will be instructed to continue their activity and diet patterns. After the intervention period, they will be offered free exercise with BP at a fitness centre (12 weeks) and resistance training with a instructor at the Norwegian School of Sport Science.
- Muscle strength [ Time Frame: 12 weeks ]
One repetition maximum (1RM) test and submaximal strength tests (60 % load of 1RM) in squats (lower body) and bench press (upper body):
Implementation: After warming-up, which consists of three series of gradually increasing load (40-75-85% of predicted 1RM) and reduction of repetitions (12-7-3), the subjects conduct the first attempt with a load around 5% below the expected 1RM. As approved trials increases the demand of 2-5%, until the subject fails. Resting periods between attempts are 3 to 5 minutes. The coefficient of variation is <5.4% in all the 1RM tests (Paulsen et al 2003). Submaximal tests are done after 1RM, based on the results from 1RM. The testing will be conducted by masterstudents included in the project, as well as an external personal trainer who takes care of spotting during squat.
- Body composition [ Time Frame: 12 weeks ]Changes in body composition will be measured with Inbody. Inbody separates adipose tissue and bonemass from other tissues in the body, leaving "lean body mass"(LBM). Any changes in LBM will primarily be due to changes in muscle mass.
- Blood-lipids, blood-sugar and cholesterol [ Time Frame: 12 weeks ]Capillary blood samples of the subjects is taken in fasting state, and will be used to analyze blood count (cholesterol (HDL, LDL), triglycerides, and glucose).
- Questionnaire [ Time Frame: 12 weeks ]A questionnaire is included regarding different health perspectives, like subjective experiences from physical activities, motivation for exercise, attitudes toward physical activity and prevalence of musculoskeletal disorders.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01993953
|Norwegian School of Sports Sciences|
|Oslo, Norway, 0806|
|Principal Investigator:||Anne Mette Rustaden, MsC||Norwegian School of Sports Sciences|