Crossing the arms over the chest while water walking is an example of which arm position?

Crossing the arms over the chest while water walking is indeed an example of a neutral arm position. In this position, the arms are not actively moving or engaged in a specific exercise but are instead held in a static position. This allows the focus to be on the lower body movements, such as those involved in water walking, without the additional demands on the upper body that come with active or extended arm positions.

In a neutral arm position, the arms are maintained in a way that provides stability and balance without contributing to propulsion or resistance, which is vital in an aquatic environment. This technique can also help in maintaining body alignment and posture during the activity.

On the other hand, an active arm position would involve more movement or engagement of the arms to contribute to the overall exercise intensity, while a relaxed arm position usually indicates a more passive state, and extended arm position would typically involve the arms being outstretched, possibly for added resistance or support.