From 2f53cdc8f7d04f5c90a6b0f0c2fdd1e6f6187789 Mon Sep 17 00:00:00 2001
From: RobSalati <rs200@rice.edu>
Date: Fri, 10 Oct 2025 12:00:48 -0500
Subject: [PATCH] update FV and FL curves

---
 src/core/muscle/activeForceLengthCurve.m | 16 ++++++++--------
 src/core/muscle/forceVelocityCurve.m     | 12 ++++++------
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/src/core/muscle/activeForceLengthCurve.m b/src/core/muscle/activeForceLengthCurve.m
index 539d1e10..cbe10203 100644
--- a/src/core/muscle/activeForceLengthCurve.m
+++ b/src/core/muscle/activeForceLengthCurve.m
@@ -30,14 +30,14 @@
 function normalizedActiveForce = activeForceLengthCurve(...
     normalizedMuscleFiberLength)
 
-b11 = 0.814483478343008;
-b21 = 1.055033428970575;
-b31 = 0.162384573599574;
-b41 = 0.063303448465465;
-b12 = 0.433004984392647;
-b22 = 0.716775413397760;
-b32 = -0.029947116970696;
-b42 = 0.200356847296188;
+b11 = 0.8174335205873374;
+b21 = 1.0543485609430232;
+b31 = 0.16194288664307016;
+b41 = 0.06381565273452484;
+b12 = 0.43130780067151425;
+b22 = 0.7163004815812248;
+b32 = -0.029060905309853686;
+b42 = 0.19835014420334882;
 b13 = 0.1;
 b23 = 1;
 b33 = 0.5 * sqrt(0.5);
diff --git a/src/core/muscle/forceVelocityCurve.m b/src/core/muscle/forceVelocityCurve.m
index 78f37ae3..656a95ad 100644
--- a/src/core/muscle/forceVelocityCurve.m
+++ b/src/core/muscle/forceVelocityCurve.m
@@ -30,12 +30,12 @@
 function normalizedForce = forceVelocityCurve(...
     normalizedMuscleFiberVelocity)
 
-d1 = -12.4090551101489;
-d2 = 9.35818070443882;
-d3 = 7.93116233095206;
-d4 = 2.70637350085154;
-d5 = -0.274108493130008;
-d6 = 8.03512618783281;
+d1 = -32.54607148305652;
+d2 = 22.180805935541066;
+d3 = 18.810486818973832;
+d4 = 6.32671625780895;
+d5 = -0.2767160849384081;
+d6 = 8.053310381650647;
 normalizedForce = d1 + d2 * atan(d3 + d4 * atan(d5 + d6 * ...
     normalizedMuscleFiberVelocity));
 end
\ No newline at end of file