What posture might suggest a lack of authority from a trainer?

A closed arm stance can indeed suggest a lack of authority from a trainer. This body posture typically reflects defensiveness or discomfort, which can lead others to perceive the trainer as less confident or authoritative. Individuals observing this stance might feel that the trainer is not fully engaged or willing to communicate openly, impacting their perception of the trainer's authority.

In contrast, relaxed body motions indicate openness and comfort, conveying confidence and approachability, which can enhance a trainer's authority. Tight shoulders often signal tension or stress, which may detract from the perception of authority, but not as directly as a closed arm stance. Meanwhile, feet being firmly planted generally suggest a sense of stability and confidence, reinforcing a trainer's authoritative presence.

Therefore, the closed arm stance more clearly communicates a lack of authority and may hinder effective communication and engagement with the audience.