Myosin head kinetics, force-velocity curve, and power output
Crossbridge distribution n(x)
Force-Velocity Curve
F = 0.00 | P = 0.00 | n_avg = 0.00
Huxley's 1957 model describes muscle force generation via myosin crossbridge attachment to actin.
Each head at displacement x attaches with rate f(x) = f₁x/h for 0≤x≤h, detaches with g(x) = g₁x/h (x>0) or g₂ (x≤0).
Steady-state: dn/dt = 0 → distribution n(x) solved analytically. Force F = ∫κx·n(x)dx.
The Hill equation F(v) = F₀(1−v/v_max)/(1+v/v_max·(F₀/a)) emerges from crossbridge kinetics.
Maximum power at intermediate velocity ~v_max/3.