Table 4.

Central hemodynamics and ratings of perceived exertion during knee extension exercise

	Liberal Salt	Restricted Salt
Heart rate, beats/min
40% Max	81 ± 13	82 ± 14
60% Max	89 ± 14†	90 ± 16†
80% Max	100 ± 19†‡	102 ± 21†‡
Stroke volume, mL
40% Max	113 ± 44	112 ± 44
60% Max	115 ± 46	103 ± 47
80% Max	115 ± 53	111 ± 45
Cardiac output, L/min
40% Max	9.5 ± 4.0	9.1 ± 3.8
60% Max	10.2 ± 3.9	9.8 ± 3.8
80% Max	11.5 ± 4.9†‡	11.2 ± 4.6†‡
Total peripheral resistance, mmHg/mL/min
40% Max	13.6 ± 4.0	13.3 ± 4.9
60% Max	12.9 ± 3.5	12.9 ± 4.3
80% Max	12.5 ± 3.7	12.2 ± 4.2
Rating of perceived exertion, AU
40% Max	3.9 ± 1.3	3.4 ± 1.3
60% Max	6.3 ± 1.4†	6.2 ± 1.1†
80% Max	7.7 ± 1.7†‡	8.1 ± 1.1†‡

Values are means ± SD; n = 18 (10 men/8 women). A 2 × 3 repeated-measures ANOVA (group, 2 levels: LS vs. RS) [workload, 3 levels: KE exercise: 40, 60, and 80% KE maximum (Max)] was performed to compare hemodynamic responses. The Holm-Sidak method was used for α-adjustment and post hoc analysis.

^†P < 0.05, vs. 40% Max.

^‡P < 0.05 vs. 60% Max.