Reed Jennifer L, De Souza Mary Jane, Kindler Joseph M, Williams Nancy I
a Women's Health and Exercise Laboratory, Noll Laboratory, Department of Kinesiology , The Pennsylvania State University , University Park , PA , USA.
J Sports Sci. 2014;32(16):1499-509. doi: 10.1080/02640414.2014.908321. Epub 2014 May 1.
The purpose of this study was to examine macronutrient intake, energy density and energy intake distribution that may be associated with low energy availability (EA) in Division I female soccer players. The energy intake, exercise energy expenditure and EA of 19 participants (18-21 years) was assessed during the pre-, mid- and postseasons. Repeated measures analysis of variance was performed to examine the changes across the season. Chi-square analysis was performed to examine the distribution of participants meeting the American College of Sports Medicine recommendations for carbohydrate and protein consumption. Independent t-tests were used to compare differences between groups. The proportion of athletes who did not meet the American College of Sports Medicine recommendations for carbohydrate intake (6-10 g . kg(-1) BW) was significantly greater in the low (<30 kcal . kg(-1) LBM) than higher (≥ 30 kcal . kg(-1) LBM) EA group (χ(2) (1) = 7.5; P = 0.006). Participants with low compared to higher EA consumed a lower energy dense dinner (0.8 ± 0.1 vs. 1.4 ± 0.1 kcal . g(-1); P = 0.004) after a soccer match during midseason. No differences in the percentage (%) of kilocalories from food (84.5 ± 2.0% vs. 84.7 ± 2.6%), sports drinks (7.3 ± 1.4% vs. 6.0 ± 3.2%), other drinks (7.6 ± 1.5 % vs. 6.0 ± 1.5%) or bars/gels/beans (1.7 ± 0.6 vs. 3.0 ± 1.5) were observed in participants with low compared to higher EA (P > 0.05) during the pre- and midseasons. Identifying inadequate carbohydrate intake and the practice of consuming lower energy dense meals may be important in preventing low EA conditions and consequently the Female Athlete Triad.
本研究的目的是调查可能与美国大学体育协会(Division I)女子足球运动员低能量可利用性(EA)相关的常量营养素摄入量、能量密度和能量摄入分布情况。在赛季前、赛季中和赛季后评估了19名参与者(18 - 21岁)的能量摄入、运动能量消耗和EA。采用重复测量方差分析来检验整个赛季的变化情况。进行卡方分析以检验符合美国运动医学学院碳水化合物和蛋白质摄入建议的参与者分布情况。使用独立样本t检验来比较组间差异。碳水化合物摄入量未达到美国运动医学学院建议(6 - 10 g·kg⁻¹体重)的运动员比例,低EA组(<30 kcal·kg⁻¹去脂体重)显著高于高EA组(≥30 kcal·kg⁻¹去脂体重)(χ²(1) = 7.5;P = 0.006)。与高EA参与者相比,低EA参与者在赛季中期足球比赛后晚餐的能量密度较低(0.8 ± 0.1 vs. 1.4 ± 0.1 kcal·g⁻¹;P = 0.004)。在赛季前和赛季中,低EA参与者与高EA参与者相比,食物(84.5 ± 2.0% vs. 84.7 ± 2.6%)、运动饮料(7.3 ± 1.4% vs. 6.0 ± 3.2%)、其他饮料(7.6 ± 1.5 % vs. 6.0 ± 1.5%)或棒状食品/凝胶/豆类(1.7 ± 0.6 vs. 3.0 ± 1.5)提供的千卡百分比无差异(P > 0.05)。识别碳水化合物摄入不足以及食用低能量密度餐食的习惯,对于预防低EA状况以及进而预防女性运动员三联征可能很重要。