Low prevalence of disordered eating patterns and menstrual irregularities in chinese female athletes / 体力科学

The purpose of this study was to examine the prevalence of disordered eating patterns (DEP) and menstrual irregularities in Chinese female athletes (n=881) and nonathletic controls (n=147), by using Eating Attitudes Test-26 (EAT-26) and written questionnaires. The athletes were divided into the following 6 categories : technical, endurance I (leanness is considered important for athletic performance) and II (leanness is less important), aesthetic, ball-game and power sports. The prevalence of DEP in the athletes estimated by EAT-26 was low (technical 1.5%, endurance I 3.3%, endurance 11 1.6%, aesthetic 3.0%, ball-game 3.0% and power sports 0.9%), and didn't significantly differ from that in nonathletic controls (0.7%) . Amenorrheic athletes were not observed in endurance I and II, aesthetic, or ball-game sports and very low prevalence rates for amenorrhea were found in the athletes in technical (0.5%) and power sports (0.4%) . These figures represent no significant differences between athletes and nonathletes in the prevalence rates of amenorrhea. It was suggested that a low prevalence of DEP in Chinese athletes stems from low socioculturally- and socioeconomically-imposed desires to be thin and low requirements for weight loss to improve athletic performance. Also, the present data suggest that the low incidence of amenorrhea in Chinese athletes is partly associated with the low prevalence of DEP.

A survey comparing nutritional status and exercise training programs between adolescent Japanese and Chinese athletes / 体力科学

The nutritional status and exercise training programs were compared between adolescent Japanese and Chinese athletes who belonged to the top schools for track and field and basketball in their respective countries. The mean energy intake was about two times greater in Chinese athletes than in their Japanese counterparts. Chinese athletes consumed 1.5-2.0 times more carbohydrate, 1.9-2.3 times more protein, 3.5-7.5 times more calcium, 2.9-3.7 times more iron, 1.72-2.2 times more vitamin B1 and 1.3-1.8 times more vitamin B<SUB>2</SUB>. Almost all the Chinese athletes consumed more than the Recommended Dietary Allowance standards for energy, protein, calcium, iron and vitamins A, B<SUB>1</SUB>, B<SUB>2</SUB> and C, while many Japanese athletes did not meet them except for vitamin A and C. The Japanese athletes had more inadequate training schedules, insufficient weight training, and unsatisfactory amount and intervals of rest. These results indicate that Japanese athletes have certain deficiencies in their comprehensive training programs in consideration to nutrition, exercise and rest.