Functional · Upper legs

Sit to stand

Target Quadriceps  ·  Equipment Chair  ·  Level Beginner  ·  Reps 8

Sit to stand is a beginner-level functional movement targeting the quadriceps, written in Posecode, a small open-source language that capable language models can use to describe human movement as text. Authored joint targets and reach-IK solves are constrained to Posecode's configured per-axis bounds. Those bounds constrain the visualization, but they do not certify that a complete movement is safe or clinically correct. This page documents a code example; it is not exercise instruction.

Movement phases

Phase cues are display-only coaching text. The executable joint and contact directives in the source below determine the animation.

1. Sit2s · flow Hinge the hips back and lower with control to sit on the chair
2. Stand1.8s · settle Drive through the heels and reach tall to stand

The .posecode source

This is the exact text used by the linked playground animation: phases and joint angles, not 3D transforms.

posecode exercise "Sit to stand"
  rig humanoid
  prop chair
  pose start = standing

  step "Sit" 2s flow:
    hips: flex 90
    knees: flex 95
    ankles: dorsiflex 15
    pelvis: hinge 15
    spine: flex 12
    shoulders: flex 60
    ground-lock: feet
    cue "Hinge the hips back and lower with control to sit on the chair"

  step "Stand" 1.8s settle:
    hips: flex 0
    knees: flex 0
    ankles: plantarflex 0
    pelvis: hinge 0
    spine: flex 0
    shoulders: flex 0
    ground-lock: feet
    cue "Drive through the heels and reach tall to stand"

  repeat 8