A questionnaire was completed by 393 working women to examine incentives and barriers to physical activity based on the stages of change from the transtheoretical model. Using Chi Square tests, differences were found across the five stages suggesting that work site programs be designed and tailored for women at different stages of readiness.

In brief Approximately 350 female runners in the 1980 Boston Marathon and the Bonne Bell 10-km race answered a questionnaire about running and menstrual history. Most of the women (69.4%) continued to menstruate regularly, 19.3% menstruated at irregular or infrequent intervals, and 3.4% had not menstruated during the previous year. Although there was a statistically significant trend toward fewer menstrual periods in runners with low body weight and high training mileage, less than one fourth of the women had both low weight and high mileage. The authors suggest that physicians seek explanations besides running when evaluating female runners with menstrual irregularity.

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Does exercise-induced amenorrhea lead to osteoporosis? Existing studies are difficult to compare because of differing methods and subjects.