A reported research results that are too long in the Gymnasium / fitness can reduce the fertility of a woman. Researchers said that women who exercise too hard to increase the possibility of up to 3 times for impaired fertility.

In the meantime, the researchers agree that physical exercise or sports do have health benefits and is also believed that the body's energy would increase the likelihood of pregnancy.

This research was conducted by the Norwegian University Department of Science and Technology in 3000 using the female subjects. Much evidence showing that female athletes have fertility problems. Besides them, the women who exercise too hard or almost reached the maximum limit has the same problem.

Through the survey, women were asked to write about the frequency, duration, and intensity of fitness activities they did between the years 1984-1986. Through follow-up 10 years later, they were asked about their pregnancy experience.

Sigridur Lara Gudmundsdottir, the chairman of this research said, "Among all women, we found that there are 2 groups at increased risk of infertility (fertility problems)."

They are susceptible to interference, is the women who practice almost every day and practice until they are completely exhausted. Both groups of women have the highest risk for experiencing infertility problems.

Although other measurement factors such as age, weight, marital status, and smoking are included in the calculation, the study showed that women who practice fitness is very hard to have a risk three times greater health problems than those with a frequency of practice was.

Young women more vulnerable to these risks. Women aged under 30 years of practicing very hard, about 25% do not have children for 1 year of their marriage, compared with an average value of normal women who only reached 7%.

Nevertheless, the negative effects of fitness training too hard is not permanent. "Most of the women who followed this study with children at the end," said Gudmundsdottir. "And those who practice hard fitness in the year 1980, including a group of children in 1990," he added.

It is not known the cause, whether because most women reduce their activity levels or because of changes in hormonal levels in them. Have not found evidence of improvement in fertility or fertility after they reduce their activity. Gudmundsdottir suggest that women who wanted children to organize their fitness activities so do not be too harsh or extreme. "We believe that physical activity is too much or otherwise too low to have a negative effect on fertility. Medium activity, including ideal for to improve fertility.