AUTHOR=Caminita Mia , Garcia Gina L. , Kwon Hyun Joon , Miller Ross H. , Shim Jae Kun 

TITLE=Sensory-to-Motor Overflow: Cooling Foot Soles Impedes Squat Jump Performance

JOURNAL=Frontiers in Human Neuroscience

VOLUME=14

YEAR=2020

URL=https://www.frontiersin.org/journals/human-neuroscience/articles/10.3389/fnhum.2020.549880

DOI=10.3389/fnhum.2020.549880

ISSN=1662-5161

ABSTRACT=<p>Evidence from recent studies on animals and humans suggest that neural overflow from the primary sensory cortex (S1) to the primary motor cortex (M1) may play a critical role in motor control. However, it is unclear if whole-body maximal motor tasks are also governed by this mechanism. Maximum vertical squat jumps were performed by 15 young adults before cooling, then immediately following a 15-min cooling period using an ice-water bath for the foot soles, and finally immediately following a 15-min period of natural recovery from cooling. Jump heights were, on average, 3.1 cm lower immediately following cooling compared to before cooling (<italic>p</italic> = 3.39 × 10<sup>−8</sup>) and 1.9 cm lower following natural recovery from cooling (<italic>p</italic> = 0.00124). The average vertical ground reaction force (vGRF) was also lower by 78.2 N in the condition immediately following cooling compared to before cooling (<italic>p</italic> = 8.1 × 10<sup>−5</sup>) and 56.7N lower following natural recovery from cooling (<italic>p</italic> = 0.0043). The current study supports the S1-to-M1 overflow mechanism in a whole-body dynamic jump.</p>