Vincent Bacot’s scientific contributions

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Publications (1)

Shooting motion in modern pentathlon. (a) Snapshots of the raising phase of one movement. We note θ the angle of the arm with the vertical. (b) Time evolution of the arm’s angle of one series of 5 shots. The shot time is noted Δ t and is here imposed at 2.0 s. The colored regions materialize the three phases of the shooting motion: the rising of the arm (red), the aiming (blue) and the lowering of the arm (green).
The evolution of accuracy with shooting speed. (a) View of the repartition of the shots for the pacing left to right Δ t = 1.4 s, Δ t = 1.8 s and Δ t = 2.5 s, performed by the elite pentathlete. The black disk represents the target of radius r t = 29.75 mm. The colored points represent the location of the shots. (b) Distribution of radial positions of shots for the aforementioned cadences. We plot in black the corresponding radial Gaussian curves, as given by Equation (1). The black vertical lines materialize the radius of the target. (c) Mean distance of the shots from the center of the target for different shooting cadences, divided by the shooting distance. For each cadence given by the metronome, the horizontal bar represents the distribution of the real shooting time taken by the shooter. It is plotted for two persons: The elite pentathlete (blue triangles) and the novice (green diamond).
Speed accuracy trade-off and total time spent at the shooting range. (a) Evolution of accuracy with shooting time. The blue triangles represent the result of an elite pentathlete located 10 m from the target, while the green diamonds are obtained with a shooter with no experience in shooting, located 4 m from the same target. For each metronome’s cadence, the horizontal error bar represents the interval of real shooting times taken by the shooter. The dashed black lines represent the best fits obtained by Equation (3). (b) Total time spent at the shooting range with shooting time of the same two persons. It corresponds to the time needed by the subject to succeed 5 shots. The black dashed lines are given by Equation (4).
Optimal Shooting Cadence in the Laser-Run Trial of Modern Pentathlon
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June 2020

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811 Reads

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7 Citations

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Vincent Bacot

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In the laser-run trial in modern pentathlon, athletes must perform series of five successful shots with a laser pistol. A miss does not lead to a penalty but costs the time needed to lower the arm, charge the weapon and raise the arm. Pentathletes face the following dilemma: is it better to shoot fast or accurately? We investigate experimentally the effect of the shooting cadence on the accuracy. We then predict the consequence of this unavoidable speed-accuracy tradeoff in terms of total time needed to succeed the specific trial of laser-run. We find an optimal shooting cadence for each athlete, which minimizes this time.

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Citations (1)

... However, as in other disciplines, physical fitness also helps shooters perform more accurately [8]. HR influences shooting performance [7,9,10], and firing speed affects accuracy [11]. In addition, the HR systematically decreases before pulling the trigger to increase shooting accuracy in elite and non-elite shooters [10]. ...

Reference:

The impact of fatigue and different environmental conditions on heart rate responses and shooting accuracy during laser run event in elite modern pentathletes
Optimal Shooting Cadence in the Laser-Run Trial of Modern Pentathlon

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Vincent Bacot

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