# Adiabatic invariants drive rhythmic human motion in variable gravity

## TL;DR

This paper demonstrates that adiabatic invariants explain how humans adapt their rhythmic movements in environments with changing gravity, revealing a new principle in motor control.

## Contribution

It introduces the application of adiabatic invariants to human motor control, showing their role in movement adaptation under variable gravity conditions.

## Key findings

- Adiabatic invariants predict human movement patterns in changing gravity.
- Humans modify motor strategies based on adiabatic principles.
- The theory explains stereotyped rhythmic movements in variable environments.

## Abstract

Natural human movements are stereotyped. They minimise cost functions that include energy, a natural candidate from mechanical and physiological points of view. In time-changing environments, however, motor strategies are modified since energy is no longer conserved. Adiabatic invariants are relevant observables in such cases, although they have not been investigated in human motor control so far. We fill this gap and show that the theory of adiabatic invariants explains how humans move when gravity varies.