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Proper functioning of the ankle musculature, specifically peroneal muscles, is crucial for maintaining balance and reducing the risk for falls. Evidence suggests that a decrease in aspects of neuromuscular control already starts at midlife (45-65 years). However, there is almost no information regarding the function of the ankle muscles at the middle-age as most experiments have compared young (<35 years) and older subjects (>65 years). Moreover, neuromuscular training can improve the function of ankle muscle in response to perturbation; yet, no previous study has compared the level of effectiveness between middle-aged and young adults.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Young adults | 18\ |
| |
| Middle aged adults | 50\ |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Electromyograph Biofeedback training of the peroneal muscle | Other | The exercise will be performed with the subject sitting in front of a computer monitor, on an elevated chair, and his feet will be in the air. The examiner will ask the subject to perform a maximum contraction of the paronal muscles, in an open kinematic chain. After reference, the subject will begin a five-minute practice. The practice will be divided into rounds of: eight seconds of muscle work and 15 seconds rest. |
| Measure | Description | Time Frame |
|---|---|---|
| Time to stabilization | Subjects will be asked to jump from a 20 cm high box onto a force plate (i.e., expected fall). | Within 24 hours |
| Electromyography of peroneus longus- "The height of the amplitude"- expected fall | Subjects will be asked to jump from a 20 cm high box onto a force plate (i.e., expected fall). electromyography of peroneus longus will be measured the height of the amplitude - expresses the peak of the electrical activity of the muscles. | Within 24 hours |
| Electromyography of peroneus longus- "Time to Peak"- expected fall | Subjects will be asked to jump from a 20 cm high box onto a force plate (i.e., expected fall). electromyography of peroneus longus will be measured the "Time to Peak"- describes the time it takes for the Peroneus longus muscle to reach the peak of its electrical activity. | Within 24 hours |
| Electromyography of peroneus longus- "Time to Onset"- expected fall | Subjects will be asked to jump from a 20 cm high box onto a force plate (i.e., expected fall). electromyography of peroneus longus will be measured the "Time to Onset" - expresses the period that passes from the beginning of the fall to the initial recruitment of the Peroneus longus. | Within 24 hours |
| Electromyography of peroneus longus- "The height of the amplitude"-unexpected fall | Subjects will stand on a platform during a unilateral sudden 30° inversion platform perturbation that resembles an unexpected fall. electromyography of peroneus longus will be measured the "height of the amplitude" - expresses the peak of the electrical activity of the Peroneus longus muscle. | Within 24 hours |
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Inclusion Criteria:
- Healthy participants
Exclusion Criteria:
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Healthy participants- Twenty-five middle-aged (50-65years) and 25 young adults (20-35 years) will be recruited.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Shmuel Springer, Prof. | Contact | +972584572869 | shmuels@ariel.ac.il |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ariel University -The Neuromuscular & Human performance laboratory | Recruiting | Ariel | Israel |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 37330500 | Derived | Hayek R, Gottlieb U, Gutman I, Springer S. Peroneal muscle response to single-leg drop-jump and unexpected leg-drop in young and middle-aged adults before and after one session of neuromuscular training. Eur Rev Aging Phys Act. 2023 Jun 17;20(1):11. doi: 10.1186/s11556-023-00321-8. |
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| Electromyography of peroneus longus- "Time to Peak"-unexpected fall |
Subjects will stand on a platform during a unilateral sudden 30° inversion platform perturbation that resembles an unexpected fall. electromyography of peroneus longus will be measured the "Time to Peak"- describes the time it takes for the Peroneus longus muscle to reach the peak of its electrical activity. |
| Within 24 hours |
| Electromyography of peroneus longus- "Time to Onset"-unexpected fall | Subjects will stand on a platform during a unilateral sudden 30° inversion platform perturbation that resembles an unexpected fall. electromyography of peroneus longus will be measured the "Time to Onset"- expresses the period that passes from the beginning of the fall to the initial recruitment of the Peroneus longos muscle. | Within 24 hours |
| Maximal voluntary isometric peroneal contraction force | Subject will perform Maximal voluntary isometric peroneal contraction. The force will measured with dynamometer | Within 24 hours |