Table 1.

Overview of the experimental design with number of stimulations per measure

				Static Condition				Static Condition		Passive Shortening
				Unmatched		Passive Lengthening		Rest Matched with Lengthening		Rest Matched with Lengthening
	Muscle	n	Parameter	Rest	MI	Rest	MI	Rest	MI	Rest	MI
Session 1	FCR	12	MEP	12	12
			Mmax	4	4
Session 2	FCR	4	CMEP	8	8
			Mmax	4	4
Session 3	FCR	12	MEP			12	12	12	12	12	12
			H-reflex	12	12	12	12	12	12	12	12
			Mmax	4	4	4	4	4	4	4	4
	SOL	10	H-reflex			12	12	12	12	12	12
	MG		Mmax			4	4	4	4	4	4
	LG
Session 4	SOL	10	H-reflex	12	12
	MG		Conditioned H	12	12
	LG		Mmax	4	4

Reported is the number of evoked responses by condition in each subject. The number of subjects by session is indicated in column 3 (n). MI, motor imagery; FCR, flexor carpi radialis; MEP, motor-evoked potential; M_max, maximal M wave; CMEP, cervico-medullary-evoked potential; H-reflex, Hoffmann-reflex; SOL, soleus; MG, medial gastrocnemius; LG, lateral gastrocnemius. Unmatched responses in column 1 represent maximal response amplitudes recorded at rest in static conditions. Matched responses represent the recordings with the adjusted stimulation intensity to match similar amplitude at rest among conditions (lengthening, shortening, and static).