Fanget Marie, Rossi Jérémy, Samozino Pierre, Morin Jean-Benoît, Testa Rodolphe, Roche Frédéric, Busso Thierry, Laukkanen Jari Antero, Hupin David
UJM-Saint-Etienne Autonomic Nervous System Research Laboratory, EA 4607 SNA-EPIS, University of Lyon, Saint-Étienne, France.
UJM-Saint-Etienne Interuniversity Laboratory of Human Movement Biology, EA 7424, University of Lyon, Saint-Étienne, France.
Front Physiol. 2020 Jan 24;10:1639. doi: 10.3389/fphys.2019.01639. eCollection 2019.
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).
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 ( ) and velocity ( ), the slope of the force-velocity relationship ( ) and the maximal mechanical power output ( ) were determined.
The (CAD: 6.86 ± 2.26 W.kg vs. HP: 9.78 ± 4.08 W.kg, = 0.003), (CAD: 5.10 ± 0.82 m.s vs. HP: 5.79 ± 0.97 m.s, = 0.010), and (CAD: 1.35 ± 0.38 N.kg vs. HP: 1.65 ± 0.51 N.kg, = 0.039) were significantly higher in HP than in CAD. No significant difference appeared in S (CAD: -0.27 ± 0.07 N.kg.m.s vs. HS: -0.28 ± 0.07 N.kg.m.s, = 0.541).
The lower maximal power in CAD patients was related to both a lower and . 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.
力-速度-功率（FVP）曲线用于描述动态力产生能力，这对于训练高水平运动员具有重要意义。然而，FVP可能为冠状动脉疾病（CAD）患者的心脏康复（CR）提供一种新的辅助工具。本研究的目的是比较两组人群的FVP曲线：CAD患者与健康参与者（HP）。
24名CAD患者（55.8±7.1岁）和24名HP（52.4±14.8岁）在Monark功率自行车上进行两次8秒的冲刺，男性的阻力对应于0.4 N/kg×体重，女性的阻力对应于0.3 N/kg×体重。测定理论最大力（ ）和速度（ ）、力-速度关系的斜率（ ）以及最大机械功率输出（ ）。
（CAD组：6.86±2.26 W.kg，HP组：9.78±4.08 W.kg， =0.003）、 （CAD组：5.10±0.82 m.s，HP组：5.79±0.97 m.s， =0.010）和 （CAD组：1.35±0.38 N.kg，HP组：1.65±0.51 N.kg， =0.039）在HP组中显著高于CAD组。S无显著差异（CAD组：-0.27±0.07 N.kg.m.s，HS组：-0.28±0.07 N.kg.m.s， =0.541）。
CAD患者较低的最大功率与较低的 和 有关。身体活动不足、久坐时间和高心血管疾病（CVD）风险可能解释了两组在高、低速度下力产生的这种差异。
