Health
Conditions
Keywords
go-kart drivers, muscle fatigue, recovery, manipulation
Brief summary
The aim of this study was to: (i) assess the impact of maximal muscle strength and stiffness on EMG and Myoton parameters for selected upper limb muscles; and (ii) assess how manipulation of the initial 2-s tension phase, in particular involving muscle stretching, affects these EMG and Myoton parameters during karting training.
Detailed description
EMG and Myoton measurements will be performed on selected muscles of the shoulder joint and forearm during karting drivers' training, initially at the beginning, after the athletes perform their first 8-minute run, after manipulation and after another 8-minute run.
Interventions
OTHERManual therapy
This technique involves a low-amplitude, high-velocity push on the shoulder and elbow joints with an additional two-second tension
OTHERPlacebo
Performing manipulations without a two-second preliminary tension of the joint capsule in the shoulder and elbow joints.
Sponsors
Medical University of Gdansk
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Healthy persons aged 18, * A license to drive a kart, * A competitor who regularly competes in the league, * Expressing informed consent to participate in the study and undertakes to comply with the regulations on the track and wear a helmet.
Exclusion criteria
* Lack of volunteer consent, * Previous upper, lower limb and spine surgeries, * Other upper limb injuries in the last 6 months, * Pain limiting participation in the study, * Neurological diseases, * Connective tissue diseases.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Assessment of MVC. | The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2). Each isometric muscle test lasts 3 seconds. | Muscle EMG is an assessment of electrical characteristics during the test, the electrical source of which is the muscle membrane potential, and measured in μV. |
| 2 Assessment of MVC. | The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2).Each isometric muscle test lasts 3 seconds. | Muscle EMG is an assessment of electrical characteristics during the test, which is measured by the repetition frequency of muscle motor unit discharges, which is measured in Hz, at the same time of the test. |
| 3. Muscle stiffness | The study will be conducted 4 times during one training session (before the intervention, after the intervention, after race 1 and after race 2). Each Myoton application lasts 1 sec for one point. | Muscle stiffness - characteristic resistance to physical contraction, which deforms initially forming. Stiffness (N/m) was calculated as S = amax.mprobe/Δl. |
Countries
Poland
Outcome results
None listed