Table 3.

Correlations between downhill running (DR) training-induced changes in knee-extensor muscle strength and different neuromuscular adaptations

	MVTECC (N∙m)			MVTISO (N∙m)			MVTCON (N∙m)
	0 to 2 weeks	2 to 4 weeks	0 to 4 weeks	0 to 2 weeks	2 to 4 weeks	0 to 4 weeks	0 to 2 weeks	2 to 4 weeks	0 to 4 weeks
VA, %	r = − 0.11	r = 0.51	r = − 0.07	r = 0.15	r = − 0.28	r = 0.83	r = 0.34	r = 0.63	r = − 0.25
	p = 0.74	p = 0.11	p = 0.82	p = 0.63	p = 0.37	p < 0.001	p = 0.27	p = 0.03	p = 0.44
VL EMG RMS, mV	–	–	–	r = 0.86	r = 0.03	r = 0.53	–	–	–
				p < 0.001	p = 0.92	p = 0.08
VL EMG RMS/Mmax, mV	–	–	–	r = 0.004	r = 0.65	r = 0.67	–	–	–
				p = 0.92	p = 0.03	p = 0.08
PCSA, cm2	r = − 0.10	r = 0.22	r = − 0.01	r = 0.49	r = 0.12	r = 0.18	r = − 0.35	r = 0.71	r = − 0.23
	p = 0.79	p = 0.54	p = 0.97	p = 0.12	p = 0.72	p = 0.59	p = 0.30	p = 0.01	p = 0.47
Volume, cm3	r = − 0.19	r = 0.28	r = − 0.15	r = 0.36	r = 0.38	r = 0.06	r = − 0.53	r = 0.67	r = − 0.17
	p = 0.61	p = 0.42	p = 0.65	p = 0.28	p = 0.24	p = 0.86	p = 0.10	p = 0.03	p = 0.60

MVT maximal voluntary torque, VA voluntary activation measured during MVT_ISO, VL RMS root mean square electromyographic signal of the vastus lateralis (VL) measured during MVT_ISO, M_max maximal M-wave amplitude, ACSA VL anatomical cross-sectional area, PCSA VL physiological cross-sectional area