Maximal voluntary force is known to be enhanced by shouting during sustained maximal voluntary contraction (MVC) via the enhancement of motor cortical excitability. However, whether excitatory input to the primary motor cortex from areas other than the motor-related cortical area induces muscular force-enhancing effects on the exertion of sustained maximal force remains unclear. Therefore, by examining MEPs\u203b1<\/sup> to TMS\u203b2<\/sup> during sustained MVC and assessing handgrip force, the present study aimed to investigate the effects of subliminal goal-priming with motivational rewards on the motor system. The findings revealed that when combined with visible rewards stimuli, invisible priming of an action concept increased the maximal voluntary force and reduced the silent period. This is the first study to report a link between the muscular force of subliminal reward-goal priming during MVC and the enhancement of motor system activity through subliminal reward-goal priming operating on the motor system, possibly through the potentiated reward-linked dopaminergic system activity.<\/p>\n \u904b\u52d5\u76ee\u6a19\u3068\u5831\u916c\u4fe1\u53f7\u3092\u5bfe\u5448\u793a\uff08\u9023\u5408\u5b66\u7fd2\uff09\u3055\u305b\u308b\u3068\u3001\u7121\u610f\u8b58\u306b\u904b\u52d5\u306e\u6e96\u5099\u304c\u7d20\u65e9\u304f\u529b\u5f37\u304f\u306a\u308a\u3001\u305d\u306e\u529b\u5f37\u3055\u304c\u6301\u7d9a\u3055\u308c\u308b\u3002\u3053\u306e\u7b4b\u529b\u5897\u5f37\u52b9\u679c\u304c\u904b\u52d5\u30b7\u30b9\u30c6\u30e0\u6d3b\u52d5\u72b6\u614b\u306e\u9ad8\u9032\u3092\u4f34\u3063\u3066\u6301\u7d9a\u7684\u306a\u6700\u5927\u7b4b\u529b\u767a\u63ee\u4e2d\u306b\u3082\u78ba\u8a8d\u3055\u308c\u305f\u3002<\/p>\n Maximal voluntary force is known to be enhanced by shouting during sustained maximal voluntary contraction (MVC) via the enhancement of motor cortical excitability. However, whether excitatory input to the primary motor cortex from areas other than the motor-related cortical area induces muscular force-enhancing effects on the exertion of sustained maximal force remains unclear.<\/p>\n This is the first study to report a link between the muscular force of subliminal reward-goal priming during MVC and the enhancement of motor system activity through subliminal reward-goal priming operating on the motor system, possibly through the potentiation of activity of the reward-linked dopaminergic system.<\/p>\n Subliminal reward-goal priming for strengthening voluntary force during sustained maximal effort via enhanced motor system state<\/p>\n In practice, many people experience emotional ups and downs when working out at the gym or undergoing rehabilitation at a rehabilitation institute. To achieve the same desired outcomes under such variable emotional conditions, the present findings suggest that gym and sports trainers and\/or physical therapists, in addition to coaches, may be able to provide people with more positive advice and surroundings to elicit positive affective responses at their facilities by making use of the muscular force-potentiating effects of unconscious goal pursuit on a sustained fatiguing voluntary contraction including maximal force production via the presentation of positive words combined with the representation of a particular behavior with or without awareness, because they should sometimes make one last effort as they accept their limitations, regardless of exercise load.<\/p>\n I do not know to what exact extent that unconscious information processing involves in neural activity in the limbic circuit, a puzzle that remains to be solved. A future study should investigate the effects of unconscious goal pursuit on the limbic circuit using functional magnetic resonance imaging.<\/p>\n The present findings revealed that barely visible goal-priming with motivational rewards resulted in a decreased silent period during sustained maximal force production and elevated handgrip maximal voluntary force. The elevated handgrip maximal force may have been caused by decreased motor cortical suppression during maximal effort induced by the additional drive of unconscious goal pursuit functioning on the motor system, possibly through the enhancement of reward-associated dopaminergic system activity. These findings indicate that an additional drive operating on the primary motor cortex (M1) has a motor cortical fatigue-diminishing effect during sustained maximal force production. In other words, the activity of the M1 during maximal force production in fatiguing maximal effort is affected by not only events in the M1 itself, but also input in one of the segmented basal ganglia (BG)-thalamocortical circuits to the M1.<\/p>\n \u203b1\u3000Motor evoked potential\uff08\u904b\u52d5\u8a98\u767a\u96fb\u4f4d\uff09<\/p>\n \u203b2\u3000Transcranial Magnetic Stimulation\uff08\u7d4c\u982d\u84cb\u78c1\u6c17\u523a\u6fc0\uff09<\/p>\n Journal\uff1a Heliyon<\/p>\n Title\uff1a Unconscious goal pursuit strengthens voluntary force during sustained maximal effort via enhanced motor system state<\/p>\n\uff08\uff11\uff09Research Background<\/h4>\n
\uff08\uff12\uff09Findings<\/h4>\n
\uff08\uff13\uff09Methods developed<\/h4>\n
\uff08\uff14\uff09Research implications to the society<\/h4>\n
\uff08\uff15\uff09Future issues<\/h4>\n
\uff08\uff16\uff09Researcher\u2019s Comment<\/h4>\n
\uff08\uff17\uff09Terminology<\/h4>\n
\uff08\uff18\uff09Journal Information<\/h4>\n