Strength Training
Conditions
Keywords
eccentric
Brief summary
The new training device, the eccentric arm-crank, will be examined for its training effect by this project. That the training device can be used in athletes and patients with paraplegia in the future, the so-called testing of the applicability of this concept will be carried out during this study. Fourteen volunteer, healthy and trained people are first tested for their upper body performance, followed by a training phase over 20 trainings and at the and the performance data is collected again. The training intensity and duration is continuously increased during the training phase.
Detailed description
At the beginning, the study design includes an familiarisation appointment with performance tests and training on the eccentric arm-crank device (KREHA). At least one week later, the first test sequence including a maximum strength test (bench press), magnetic resonance imaging (MRI) to determine the muscle cross-section area of the upper arm and a test to determine the anaerobic performance (Wingate test) is conducted. The second test sequence takes place one to three days later. This includes a handgrip strength test, an aerobic endurance test (ramp test on the arm crank ergometer with ergospirometry) and a further familiarisation training on the KREHA. The training phase starts within two weeks after the pre-tests have been completed. There are two to a maximum of three trainings per week. These take 30 to 60 minutes and take place on the KREHA device under the supervision of the study staff. The training phase lasts a maximum of twelve weeks (20 training sessions). The first test sequence is repeated five to eight days after the last workout. The second test sequence takes place at the same time interval as in the pre-tests.
Interventions
Over the twenty training sessions, able-bodied participants will exercise on the KREHA device. An arm-crank has to be decelerated, which will be rotated by a prematurely defined revolution rate and training duration. During this intervention a certain power has to be applied. During the whole time of training a continous progression in power and training duration is applied
Sponsors
Swiss Paraplegic Research, Nottwil
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* male or female * age between 18 and 50 years * experience in strength training * trained (minimum two times a week) * healthy * adequately informed and confirmed per signature
Exclusion criteria
* findings during anamnesis of study doctor * pregnancy
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Upper body Performance | through study completion, an average of 20 weeks | Peak Power - maximal reached power, generated during the 30sec Wingate arm-crank test |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Endurance Power | through study completion, an average of 20 weeks | Wmax \[W\] - Basic Endurance test (Ergospirometry, arm-crank) |
| Upper body Mean Power | through study completion, an average of 20 weeks | Mean Power \[W\] - Wingate Test (arm-crank) |
| Upper body Power - Time to Peak | through study completion, an average of 20 weeks | Time to Peak \[s\] - Wingate Test (arm-crank) |
| Upper body Fatigue resistance | through study completion, an average of 20 weeks | Fatigue Index \[%\]- Wingate Test (arm-crank) |
| Endurance Oxygen consumption | through study completion, an average of 20 weeks | VO2peak \[ml/min/kg\] - Basic Endurance test (Ergospirometry, arm-crank) |
| Grip Strength | through study completion, an average of 20 weeks | Maximal Force that can be generated by pressing hand towards a fist \[N\] |
| Cross sectional muscle area | through study completion, an average of 20 weeks | Cross sectional area of the upper arm is measured with MRI |
| Upper Arm Circumference | through study completion, an average of 20 weeks | Circumference of the upper arm is measured with measuring tape |
| 1RM bench press | through study completion, an average of 20 weeks | One Repetition Maximum (1RM) \[kg\]- bench press |
Countries
Switzerland
Outcome results
None listed