TABLE 2.

Effects of dynamic exercise intensity on M-wave parameters.

Exercise intensity	40% PPO	6MP-5%	6MP	6MP+5%
First phase
Amplitude (mV)
Start exercise	4.2 ± 2.1	3.8 ± 2.8	3.7 ± 1.6	4.1 ± 2.3
End exercise	4.3 ± 2.1	4.5 ± 2.8	4.4 ± 2.8	4.5 ± 3.0
Duration (ms)
Start exercise	8.7 ± 1.8	7.6 ± 1.6	8.0 ± 2.4	7.9 ± 2.1
End exercise	7.9 ± 1.9	8.0 ± 2.5	7.8 ± 3.4	6.7 ± 1.8
Area (mV ms)
Start exercise	32.6 ± 11.5	26.9 ± 19.7	28.2 ± 14.8	29.7 ± 15.9
End exercise	29.0 ± 11.0	29.7 ± 17.8	32.1 ± 19.1	25.2 ± 15.9
Second phase
Amplitude (mV)
Start exercise	5.6 ± 2.1	5.9 ± 1.6	6.1 ± 2.4	6.2 ± 2.6
End exercise	5.6 ± 1.8	6.0 ± 1.4	5.9 ± 2.0	6.3 ± 2.3
Duration (ms)
Start exercise	30.7 ± 9.3	29.6 ± 6.3	29.2 ± 5.7	30.2 ± 5.4
End exercise	29.7 ± 6.8	30.6 ± 7.8	29.5 ± 7.6	27.4 ± 8.2
Area (mV ms)
Start exercise	46.5 ± 18.0	49.5 ± 13.8	51.2 ± 16.5	45.0 ± 19.6
End exercise	46.6 ± 18.7	48.3 ± 9.7	48.0 ± 15.9	49.1 ± 18.6
Whole M-wave
Amplitude (mV)
Start exercise	9.8 ± 2.8	9.6 ± 3.5	9.8 ± 3.4	10.2 ± 3.2
End exercise	9.9 ± 2.9	10.4 ± 3.6	10.4 ± 3.8	10.9 ± 3.3
Duration (ms)
Start exercise	39.5 ± 9.3	37.3 ± 6.0	37.2 ± 5.8	38.1 ± 5.1
End exercise	37.6 ± 5.5	38.6 ± 7.4	37.3 ± 9.0	34.1 ± 7.4
Area (mV ms)
Start exercise	79.2 ± 20.7	76.4 ± 27.8	79.4 ± 21.9	74.8 ± 23.2
End exercise	75.7 ± 19.3	77.9 ± 20.6	80.0 ± 29.6	74.3 ± 27.4

A single twitch was elicited 15 s after the beginning of exercise at a target intensity (start exercise) and at the end (12 min for 40%PPO and at task failure for 6MP-5%, 6MP, and 6MP+5%). Peak-to-peak amplitude, duration, and area of first phase and second phase and whole M-wave were measured. Data as mean ± SD.