Mini-trampoline Intervention vs. Nordic Walking: Balance, Fitness and Neuropsychological Effects

Study Overview
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Brief Summary
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The effects of mini-trampoline training on balance, cardiorespiratory fitness, strength and neuropsychological parameters in an overweight or obese population are unknown. The aim of this 2-arm randomized controlled trial is to compare the effects of a 12-week mini-trampoline training and a 12-week nordic walking training on balance, fitness and strength in overweight/obese individuals.

Detailed Description
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A growing body of literature suggests, that obesity is not only associated with medical conditions such as diabetes, but also linked to altered gait, impaired balance and a greater likelihood of falls. Weight reduction has been shown to improve balance controle. Methods to increase physical activity are largely not accepted in this population and those which conserve the musculoskeletal system are rare. Physical activity has been shown to influence mood, quality of life and eating behavior. Mini-trampoline training has been shown to enhance stability and increase fitness.

Official Title
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Comparison of 12-week Mini-trampoline Intervention With a Nordic Walking Intervention: Balance, Fitness and Neuropsychological Effects

Conditions
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Overweight, Obesity

Intervention / Treatment
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* Other: mini-trampoline
* Other: Nordic Walking


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age 18-55 years Body Mass Index ≥25 kg/m2 ≤ 1h regular exercise/ physical activity per week Exclusion Criteria: cardiovascular or other chronic diseases not permitting sports participation inability to follow the procedures of the study (e.g. due to dementia) neurological disorders limiting balance or medications impairing balance hypertensive blood pressure not permitting exercise (>180/100 mmHg) medication: beta-blocking agents which reduce cardiac adaption abilities to exercise known pregnancy with contraindications for exercise according to the guidelines of the American College of Obstetricians and Gynecologists

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Mini-trampoline<br>participants allocated to this group will participate in a 12-week mini-trampoline group instructed training twice a week. | Other: mini-trampoline<br>* Intervention period lasts 12 weeks, training is group instructed, twice weekly. Training sessions are one hour each. The training intensity of the two interventional arms is comparable. The training progression is defined in advance.<br>|
| Active Comparator: Nordic Walking<br>participants allocated to this group will participate in a 12-week Nordic Walking group instructed training twice a week. | Other: Nordic Walking<br>* Intervention period lasts 12 weeks, training is group instructed, twice weekly. Training sessions are one hour each. The training intensity of the two interventional arms is comparable. The training progression is defined in advance.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postural sway | COPspeed (Center of pressure speed measured on a force plate in cm/sec) measured on a force plate in quiet stance with eyes closed | assessed twice: before and after the intervention (12 weeks) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| peak oxygen uptake | (VO2 peak in ml/kg/min) | assessed twice: before and after the intervention (12 weeks) | 
| submaximal heart rate at 50 Watts | (HR at 50 Watts in beats/min) | assessed twice: before and after the intervention (12 weeks) | 
| maximal work | (Watts on bicycle ergometer) | assessed twice: before and after the intervention (12 weeks) | 
| dynamic core strength | (Nm/kg on dynamometer) | assessed twice: before and after the intervention (12 weeks) | 
| lower body explosive strength | (seconds on chair rise test) | assessed twice: before and after the intervention (12 weeks) | 
| lower body functional endurance | (repetitions during 30-second-chair rise test) | assessed twice: before and after the intervention (12 weeks) | 
| isokinetic plantar flexion strength | (Nm/kg on dynamometer) | assessed twice: before and after the intervention (12 weeks) | 
| functional balance | (cm in reach test) | assessed twice: before and after the intervention (12 weeks) | 
| body fat mass | (in kg) | assessed twice: before and after the intervention (12 weeks) | 
| waist circumference | (in cm) | assessed twice: before and after the intervention (12 weeks) | 
| motivation and barriers | (score on questionnaire) | assessed twice: before and after the intervention (12 weeks) | 
| mood | (score on multidimensional mood questionnaire) | assessed twice: before and after the intervention (12 weeks) | 
| weight adjusted quality of life | (score on IWQOL questionnaire) | assessed twice: before and after the intervention (12 weeks) | 
| body dissatisfaction | (score on Figure Rating Scale) | assessed twice: before and after the intervention (12 weeks) | 
| eating behavior | (score on FEV questionnaire) | assessed twice: before and after the intervention (12 weeks) | 
| attention | (score on the digit span test) | assessed twice: before and after the intervention (12 weeks) | 
| cognitive flexibility | (seconds during the Trail making test) | assessed twice: before and after the intervention (12 weeks) | 
| executive planning function | (score in the Tower of London Test (computer based version)) | assessed twice: before and after the intervention (12 weeks) | 
| behavioral shift and inhibition | (number of mistakes in the Inhib Test (computer based version)) | assessed twice: before and after the intervention (12 weeks) | 
| body muscle mass | (in kg) | assessed twice: before and after the intervention (12 weeks) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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balance, strength, barriers towards exercise, quality of life, body dissatisfaction, executive functions, eating behavior, fitness