The　aim　of　this　study　was　to　quantitatively　investigate　the　effects　of　force　load,　muscle　fatigue,　and　extremely　low　frequency　(ELF)　magnetic　stimulation　on　electroencephalography-　(EEG-)　electromyography　(EMG)　coherence　during　right　arm　lateral　raise　task.　Eighteen　healthy　male　subjects　were　recruited.　EEG　and　EMG　signals　were　simultaneously　recorded　from　each　subject　while　three　different　loads　(0,　1,　and　3kg)　were　added　on　the　forearm.　ELF　magnetic　stimulation　was　applied　to　the　subject＇s　deltoid　muscle　between　tasks　during　the　resting　period.　Univariate　ANOVA　showed　that　all　EEG-EMG　coherence　areas　of　C3,　C4,　CP5,　and　CP6　were　not　significantly　affected　by　the　force　load　(all　p＞0.05)　and　that　muscle　fatigue　led　to　statistically　significant　reductions　on　the　coherence　area　of　gamma　band　in　C3　(p=0.014)　and　CP5　(p=0.019).　More　interestingly,　these　statistically　significant　reductions　disappeared　with　the　application　of　muscle　ELF　magnetic　stimulation,　indicating　its　potential　application　to　eliminate　the　effect　of　fatigue.