Last Word on Point:Counterpoint: Afferent feedback from fatigued locomotor muscles is not an important determinant of endurance exercise performance

摘要

This Point: Counterpoint is about endurance performance, not central motor drive (CMD) or cardiorespira-tory regulation. Therefore, the right question I have asked is whether afferent feedback from peripheral metaboreceptors (AF) affects conscious self-regulation of power output during time trials. Current experimental evidence suggests it does not. In fact, spinal blockade of AF does not affect average power output (fentanyl trial) unless it is complicated by a reduction in locomotor muscle strength (lidocaine trial) and consequent reduction in endurance performance. This is why I focused on the two spinal-blockade studies.