NeuroMap System

Neuro-Muscular Coordination Dynamics in Sport

Objective: Investigate muscle co-activation and firing properties at the motor unit level during different phases of gait.

The understanding of the contribution of different muscles and their control characteristics is critical for the assessment of balance and gait in health and disease.

Neuro-Muscular Coordination Dynamics in Sport

Methods

Galileo sensors were placed over muscles of the lower limb, such as the Vastus Lateralis, Vastus Medialis, Biceps Femoris, Tibilias Anterior, Peroneous Longus and gastrocnemius, in conjunction with knee joint angle measurements during outdoor cycling.

Motor Unit Recruitment Analysis

Results

Activation of knee flexor and extensor muscles correlates with power and recovery phase of cycling. Recruitment and de-recruitment patterns of lower leg muscle during the cycling phases shed light on inter-limb coordination dynamics.

Other References

Sterczala et al. Differences in the motor unit firing rates and amplitudes in relation to recruitment thresholds during submaximal contractions of the first dorsal interosseous between chronically resistance trained and physically active men. App Physiol Nutr Metab 2018.

Hight et al. Adaptations in antagonist co-activation: Role in the repeated-bout effect. PLoS One 2017.

Contessa et al. The compensatory interaction between motor unit firing behavior and muscle force during fatigue. J Neurophysiol 2016.

Ye et al. Influence of prolonged static stretching on motor unit firing properties. Muscle Nerve 2015.

McManus et al. Changes in motor unit behavior following isometric fatigue of the first dorsal interosseous muscle. J Neurophysiol 2015.

Ye et al. Acute effects of dynamic exercises on the relationship between the motor unit firing rate and the recruitment threshold. Hum Mov Sci 2015.

Ye et al. Acute effects of concentric vs. eccentric exercise on force steadiness and electromyographic responses of the forearm flexors. J Strength Cond Res 2015.

Ye et al. Influences of dynamic exercise on force steadiness and common drive. J Musculoskel Neuronal Int 2014.

Stock & Thompson. Effects of barbell deadlift training on submaximal motor unit firing rates for the Vastus Lateralis and Rectus Femoris. PLoS ONE 2014.

Stock et al. Effects of fatigue on motor unit firing rate versus recruitment threshold relationship. Muscle Nerve 2012.

Beck et al. Eccentric exercise does not affect common drive in the biceps brachii. Muscle Nerve 2012.

Beck et al. Effects of fatigue on intermuscular common drive to the quadriceps femoris. Int J Neurosci 2012

Beck et al. Effects of resistance training on force steadiness and common drive. Muscle Nerve 2011.

Beck et al. The Effects of a Resistance Training Program on Average Motor Unit Firing Rates. Clin Kinesiol 2011.