Cardiac Output and Performance during a Marathon Race in Middle-Aged Recreational Runners

Table 1

The subjects’ characteristics and values during the incremental test.

Runner	Characteristics		Values during the incremental test
	Age	BMI	SVmax	HRmax	COmax	vLT	vSVmax	vpeak
1	27	18.3	147	189	25.6	12	11	15
2	30	24.0	180	191	26.1	10	11	14
3	39	24.2	182	200	26.7	11	12	15
4	36	23.3	174	192	28.0	14	15	17
5	39	21.6	197	189	33.7	15	14	18
6	36	22.5	179	199	29.9	12	11	15
7	34	20.8	163	187	25.5	15	13	17
8	37	23.2	198	190	35.4	13	13	17
9	45	22.1	185	179	23.3	12	13	16
10	47	21.0	166	190	27.4	15	13	19
11	33	23.4	175	181	29.5	12	15	16
12	36	23.6	180	187	22.6	12	12	16
13	35	24.6	180	186	27.4	11	12	16
14	46	20.8	163	180	24.3	12	12	14
Mean	37	22.4	176	189	27.5	13	13	16
SD	6	1.7	14	6	3.7	2	1	1

Age (yrs); BMI: body mass index; SV_max: maximal stroke volume (mL); HR_max: maximal heart rate (beats·min⁻¹); CO_max: maximal cardiac output (L·min⁻¹); vLT: speed at the lactate threshold (km·h⁻¹); vSV_max: speed at the maximal stroke volume (km·h⁻¹); v_peak: maximal speed (km·h⁻¹).