create_FVP {shorts} | R Documentation |
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,
...
)
Arguments
MSS , MAC |
Numeric vectors. Model parameters |
bodymass |
Body mass in kg. Used to calculate relative power and forwarded to |
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 |
Value
List containing the following elements:
- bodymass
Returned
bodymass
used in FV profiling- F0
Horizontal force when velocity=0
- F0_rel
F0
divided bybodymass
- V0
Velocity when horizontal force=0
- Pmax
Maximal horizontal power
- Pmax_rel
Pmax
divided bybodymass
- FV_slope
Slope of the FV profile. See References for more info
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
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