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Fig. 1 | Biology of Sex Differences

Fig. 1

From: Muscle function and fatigability of trunk flexors in males and females

Fig. 1

Experimental setup and representative data of fatigue task. a Experimental setup of the biodex back flexion/extension attachment in the upright sitting (0°) position, used for the fatigue task. The frame of the attachment is represented in light gray, with padding in medium gray and restraints in dark gray. The red dot indicates the axis of rotation of the device. b Representative trace of raw data for a young male. EMG traces for the right rectus femoris, left external oblique, and right rectus abdominis are shown. The bottom trace is trunk flexion torque and shows the 50% submaximal contractions with MVCs performed every minute starting at minute 6 for a 9.7 min fatiguing exercise bout

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