id	keyword
bam-7732	duty
bam-7732	cycle
bam-7732	stimulation
bam-7732	duty cycle
bam-7732	time
bam-7732	muscle
bam-7732	authors
bam-7732	fatigue
bam-7732	fes
bam-7732	force
bam-7732	contractions
bam-7732	literature
bam-7732	period
bam-7732	rest
bam-7732	spinal
bam-7732	cord
bam-7732	torque