Athletic Differences in the Characteristics of the Photoplethysmographic Pulse Shape: Effect of Maximal Oxygen Uptake and Maximal Muscular Voluntary Contraction

Table 2

Differences of PPG pulse characteristics between the three subgroups catergoised by MaxO₂ or MMVC.

Parameters	MaxO2 subgroups				MMVC subgroups
	Low	Middle	High	value	Low	Middle	High	value
Area	51 ± 7.1	51 ± 5.3	45 ± 6.1	<0.05	47 ± 6.8	48 ± 6.7	51 ± 6.2	<0.05
	19 ± 5.5	20 ± 5.1	17 ± 4.2	<0.05	19 ± 5.3	19 ± 4.6	20 ± 5.2	0.3
	36 ± 5.2	38 ± 6.9	32 ± 6.1	<0.05	37 ± 6.7	38 ± 7.4	39 ± 5.8	0.9
RI	0.73 ± 0.13	0.74 ± 0.11	0.69 ± 0.12	<0.05	0.71 ± 0.11	0.71 ± 0.12	0.73 ± 0.13	0.5