Pain semantics study. HELP

Hello, everyone. I’m working on my master’s degree thesis proyect which involves assessing the semantic representation of physical pain-related concepts in mixed martial artists and muay thai fighters. For this purpose, the Natural Semantic Network Technique was chosen as it has been proven to be an effective and reliable tool, nevertheless, since it has been barely used in english spoken countries, the number of published papers is low and almost non-existent if it’s about my research topic.

Do you know any papers or ongoing investigations on pain semantics?

Do you know a technique other tan NSNT for assessing semantic representations of pain-related concepts?