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shorts (version 3.2.0)

create_FVP: Create Force-Velocity Profile

Description

Creates Force-Velocity Profile (FVP) modified using ideas by Pierre Samozino and JB-Morin, et al. (2016) and Pierre Samozino and Nicolas Peyror, et al (2021).

Usage

create_FVP(
  MSS,
  MAC,
  bodymass = 75,
  inertia = 0,
  resistance = 0,
  wind_velocity = 0,
  ...
)

Value

List containing the following elements:

bodymass

Returned bodymass used in FV profiling

F0

Horizontal force when velocity=0

F0_rel

F0 divided by bodymass

V0

Velocity when horizontal force=0

Pmax

Maximal horizontal power

Pmax_rel

Pmax divided by bodymass

FV_slope

Slope of the FV profile. See References for more info

Arguments

MSS, MAC

Numeric vectors. Model parameters

bodymass

Body mass in kg. Used to calculate relative power and forwarded to get_air_resistance

inertia

External inertia in kg (for example a weight vest, or a sled). Not included in the air resistance calculation

resistance

External horizontal resistance in Newtons (for example tether device or a sled friction resistance)

wind_velocity

In meters per second (m/s). Use negative number as head wind, and positive number as back wind. Default is 0m/s (no wind)

...

Forwarded to predict_power_at_distance

References

Samozino P, Rabita G, Dorel S, Slawinski J, Peyrot N, Saez de Villarreal E, Morin J-B. 2016. A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running: Simple method to compute sprint mechanics. Scandinavian Journal of Medicine & Science in Sports 26:648–658. DOI: 10.1111/sms.12490.

Samozino P, Peyrot N, Edouard P, Nagahara R, Jimenez‐Reyes P, Vanwanseele B, Morin J. 2022. Optimal mechanical force‐velocity profile for sprint acceleration performance. Scandinavian Journal of Medicine & Science in Sports 32:559–575. DOI: 10.1111/sms.14097.

Examples

Run this code
data("jb_morin")

m1 <- model_radar_gun(time = jb_morin$time, velocity = jb_morin$velocity)

fv_profile <- create_FVP(
  MSS = m1$parameters$MSS,
  MAC = m1$parameters$MAC,
  bodyheight = 1.72,
  bodymass = 120,
)

fv_profile

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