Which factor is NOT associated with the female athlete triad?

The answer identifying "regular menstrual cycles" as the factor that is NOT associated with the female athlete triad is correct because the triad is specifically characterized by disruptions in menstrual cycles related to energy imbalance and nutritional deficiencies experienced by physically active females.

The female athlete triad consists of three interrelated components: energy deficiency (which often stems from disordered eating), amenorrhea (the absence of menstrual periods), and low bone mineral density such as osteopenia or osteoporosis. Regular menstrual cycles indicate a healthy hormonal environment and energy balance, which contrasts sharply with the conditions seen in the triad. In individuals affected by the female athlete triad, menstrual irregularities, particularly amenorrhea, are common and signal potential issues with energy availability and overall health. Therefore, having regular menstrual cycles is not compatible with the triad's features, further affirming the accuracy of the answer.