AUTHOR=Fanget Marie , Rossi Jérémy , Samozino Pierre , Morin Jean-Benoît , Testa Rodolphe , Roche Frédéric , Busso Thierry , Laukkanen Jari Antero , Hupin David 

TITLE=Dynamic Force Production Capacities Between Coronary Artery Disease Patients vs. Healthy Participants on a Cycle Ergometer

JOURNAL=Frontiers in Physiology

VOLUME=10

YEAR=2020

URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2019.01639

DOI=10.3389/fphys.2019.01639

ISSN=1664-042X

ABSTRACT=<sec><title>Background</title><p>The force-velocity-power (FVP) profile is used to describe dynamic force production capacities, which is of great interest in training high performance athletes. However, FVP may serve a new additional tool for cardiac rehabilitation (CR) of coronary artery disease (CAD) patients. The aim of this study was to compare the FVP profile between two populations: CAD patients vs. healthy participants (HP).</p></sec><sec><title>Methods</title><p>Twenty-four CAD patients (55.8 ± 7.1 y) and 24 HP (52.4 ± 14.8 y) performed two sprints of 8 s on a Monark cycle ergometer with a resistance corresponding to 0.4 N/kg × body mass for men and 0.3 N/kg × body mass for women. The theoretical maximal force (<italic>F</italic><sub>0</sub>) and velocity (<italic>V</italic><sub>0</sub>), the slope of the force-velocity relationship (<italic>S</italic><sub>fv</sub>) and the maximal mechanical power output (<italic>P</italic><sub>max</sub>) were determined.</p></sec><sec><title>Results</title><p>The <italic>P</italic><sub>max</sub> (CAD: 6.86 ± 2.26 W.kg<sup>–1</sup> vs. HP: 9.78 ± 4.08 W.kg<sup>–1</sup>, <italic>p</italic> = 0.003), <italic>V</italic><sub>0</sub> (CAD: 5.10 ± 0.82 m.s<sup>–1</sup> vs. HP: 5.79 ± 0.97 m.s<sup>–1</sup>, <italic>p</italic> = 0.010), and <italic>F</italic><sub>0</sub> (CAD: 1.35 ± 0.38 N.kg<sup>–1</sup> vs. HP: 1.65 ± 0.51 N.kg<sup>–1</sup>, <italic>p</italic> = 0.039) were significantly higher in HP than in CAD. No significant difference appeared in S<sub>fv</sub> (CAD: −0.27 ± 0.07 N.kg<sup>–1</sup>.m.s<sup>–1</sup> vs. HS: −0.28 ± 0.07 N.kg<sup>–1</sup>.m.s<sup>–1</sup>, <italic>p</italic> = 0.541).</p></sec><sec><title>Conclusion</title><p>The lower maximal power in CAD patients was related to both a lower <italic>V</italic><sub>0</sub> and <italic>F</italic><sub>0</sub>. Physical inactivity, sedentary time and high cardiovascular disease (CVD) risk may explain this difference of force production at both high and low velocities between the two groups.</p></sec>