Table 1.

Performance and neuromuscular function parameters of the 60 MVC test following placebo and acetaminophen ingestion

	Placebo	Acetaminophen
Performance
Peak MVC (N m)	221 ± 49	230 ± 38
Mean torque (% MVC)	58 ± 14	61 ± 11*
Total torque-impulse (N m s)	22,055 ± 3885	24,386 ± 3792*
CT (% MVC)	40 ± 15	44 ± 12*
Wʹ (N m s)	6971 ± 2432	6906 ± 2537
Neuromuscular function
End-exercise pTw (N m)	30 ± 20	31 ± 23
End-exercise contraction time (ms)	83.2 ± 10.9	81.3 ± 14.0
End-exercise half-relaxation time (ms)	72.5 ± 17.2	75.5 ± 17.5
End-exercise MRFD (N m s)	1330 ± 471	1230 ± 433
End-exercise VA (%)	59 ± 19	62 ± 16
End-exercise M-wave amplitude (%)	96 ± 14	95 ± 18
End-exercise M-wave amplitude (mV)	5.64 ± 2.59	5.44 ± 2.72
End-exercise EMG amplitude (%)	59 ± 17	87 ± 28*

MVC maximal voluntary contraction, CT critical torque measured in the last six contractions; mean torque measured as average torque across the 60 MVC test, pTw potentiated twitch force, MRFD maximal rate of force development, VA voluntary activation measured using the interpolated twitch method technique, EMG electromyography, N m newton metres, N m s newton metres per second, ms milliseconds

*Significantly different from placebo (P < 0.05)