When a client performs a squat on an unstable surface that is new to him/her, how does it affect the squat depth?

When a client performs a squat on an unstable surface that they are not familiar with, it can lead to a decrease in squat depth. This is primarily because the instability of the surface introduces a new challenge that can affect balance and body control. As the client focuses on maintaining stability and preventing falls, they may unconsciously limit the depth of their squat to ensure they can maintain proper posture and alignment.

Moreover, the uncertainty and new demands of the unstable surface may prompt the client's neuromuscular system to prioritize safety and balance over achieving a full range of motion. This results in a shallower squat depth as a protective mechanism to navigate the unfamiliar environment.

While there may be situations where depth could remain unchanged or vary, the general tendency for inexperienced individuals on an unstable surface is to reduce the depth of the squat to maintain control and stability.