posturist
/ˈpɒstʊrist/; /ˈpoʊstərɪst/Definitions
1. noun
A person who specializes in the assessment and correction of posture.
“The posturist examined the patient’s posture and provided recommendations for improvement.”
2. verb
To assess and correct the posture of someone or something.
“The trainer posturist the athlete to improve their performance.”