Final answer:
Lynne's reduction in pre-game anxiety and sustained post-competition elation align with the inverted U-shaped theory of arousal, suggesting she has found an optimal level of arousal for peak performance, known as eustress.
Step-by-step explanation:
The phenomenon Lynne experiences, where her initial intense anxiety has lessened over time, but she still feels elated after athletic competitions, can be explained by the inverted U-shaped theory of arousal. The theory posits that there is an optimal level of arousal that leads to the best performance.
Initially, Lynne's anxiety may have been too high, hindering her performance (a state known as distress), but over time, through repeated exposure and experience, she has achieved a more moderate, optimal level of arousal prior to her games, reducing her anxiety to a level that still motivates and prepares her for competition without being debilitating. This moderate arousal level aligns with what research identifies as eustress, a positive and energizing stress which can enhance performance. It's also worth noting that the thrill Lynne feels post-competition could be linked to the release of biochemical substances such as endorphins or endocannabinoids that have a positive effect on mood.