. 2016 Dec 22;122(3):446–459. doi: 10.1152/japplphysiol.00942.2016

Table 2.

Correlation coefficients between the rate of change in blood and muscle tissue variables and rate of change in neuromuscular variables measured in vastus lateralis muscle

	M-Wave Amplitude	Voluntary EMG	Neural Drive
Severe
Blood [lactate]^b	−0.30	0.57^a	0.47^a
Plasma [K⁺]^b	−0.39^a	0.68^a	0.64^a
[PCr]^c	0.59^a	−0.80^a	−0.80^a
[lactate]^c	−0.40	0.44^a	0.55^a
[glycogen]^c	−0.22	0.46^a	0.56^a
[pH]^c	−0.13	0.36	0.37
[ATP]^c	0.21	−0.60^a	−0.59^a
Heavy
Blood [lactate]^d	−0.42	0.13	0.49
Plasma [K⁺]^d	−0.88^a	−0.29	0.86^a
[PCr]^e	0.93^a	−0.28	−0.72^a
[lactate]^e	−0.25	0.63	0.66
[glycogen]^e	−0.15	0.53	0.77^a
[pH]^e	0.13	0.78^a	0.27
[ATP]^e	−0.26	0.32	0.63
Moderate
Blood [lactate]^d	0.08	0.05	0.10
Plasma [K⁺]^d	0.12	0.18	0.49
[PCr]^e	−0.67^a	−0.36	0.58
[lactate]^e	−0.44	−0.34	0.04
[glycogen]^e	−0.10	0.43	0.23
[pH]^e	0.19	0.06	−0.30
[ATP]^e	0.09	0.59	0.24

P < 0.05;

n = 33;

n = 24;

n =10;

n = 7.