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

<table>Heart rate (beats<svg height="5.0124998" id="M132" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 4.5999999 5.0124998" width="4.5999999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,5.0125)">
<g transform="translate(72,-67.99)">
<text transform="matrix(1,0,0,-1,-71.95,68.04)">
<tspan style="font-size: 12.50px; " x="0" y="0">⋅</tspan>
</text>
</g>
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</svg>m<sup>−1</sup>, black line) and stroke volume (mL, grey line) during the marathon.</table>

The Scientific World Journal

fig3

Figure 3

Figure 3: Cardiac Output and Performance during a Marathon Race in Middle-Aged Recreational Runners 