Good morning everyone,
I'm conducting some trials with sEMG located on peroneal muscles: subjects are making a drop jump and a re-jump immediately after landing on the same leg.
I haven't got a force plate to detect ground contact or other devices: I can rely only on EMG data.
When can I consider activated and at rest the peroneal mucles during the task?
This is important to me to detect the curve of the muscle activation between subjects in a standard manner.
I was thinking about choosing for example a 10% threshold relative to the Maximun Volontary Contraction.
Do you have some ideas or some research papers with suggestions about this?
Thanks a lot!
The act of jumping on two feet involves the use of several muscle groups in the body, such as the leg muscles, glutes, and abdominals. When jumping, these muscles contract and strengthen, which contributes to the development of strong, healthy muscles.
The Peroneals are everters through normal gait and are turned on during stance primarily to stabilize the lateral foot. The longus will counteract the inverters at early stance to stabilize the medial side of the forefoot. I would think that they would have a similar stabilizing function in landing from a drop jump. They do not really have much propulsive function. They are not active during swing or non-weight bearing phases as an everted foot through swing is not normal. If you haven't yet, Jacquelin Perry's work in gait analysis is very detailed and may be more helpful to you
PL activation onset time and time to peak activation can be measured as outcomes
A previous study reported that the MA group showed significantly shorter PL activity in preparation for landing compared to the young adults (25.0% vs. 30.0%, p = 0.016) suggesting that age negatively affects peroneal activation. From this study we may assume that a%
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