School of Human Sciences (Exercise and Sport Science), The University of Western Australia, Australia.
Curtin School of Allied Health, Curtin University, Australia.
J Sci Med Sport. 2022 Feb;25(2):115-121. doi: 10.1016/j.jsams.2021.09.192. Epub 2021 Oct 2.
(1) Compare changes in body composition estimates over the menstrual cycle in active females using Dual-energy X-ray absorptiometry, standardised brightness-mode ultrasound and skinfolds (2) Compare the predictability of Dual-energy X-ray absorptiometry fat mass estimate via standardised brightness-mode ultrasound versus skinfolds measurements.
Thirty active females (27 ± 5 y) with regularly occurring menstrual cycles participated in a cross sectional study.
Participants completed four assessment sessions scheduled according to each individual's menstrual cycle. These sessions took place during their (1) early follicular, (2) mid-to-late follicular, (3) mid-luteal and (4) second early follicular phases. Body composition estimates were acquired using Dual-energy X-ray absorptiometry, subcutaneous adipose tissue thickness was measured at eight sites using standardised brightness-mode ultrasound and skinfolds.
The sum of eight subcutaneous adipose tissue thickness measured using standardised brightness-mode ultrasound and skinfolds were not different between the cycle phases (p > 0.05). Body mass and Dual-energy X-ray absorptiometry total mass estimate as well as Dual-energy X-ray absorptiometry estimates of total and regional lean and fat mass were also not different between cycle phases (p > 0.05) and any changes were within the 95% confidence intervals of their respective least significant change values.
There were no true and meaningful changes in the sum of eight subcutaneous adipose tissue thickness measured via standardised brightness-mode ultrasound and skinfolds or Dual-energy X-ray absorptiometry total and regional tissue mass estimates across the menstrual cycle in active eumenorrheic females. Body composition may thus be assessed via these methods in this population at any cycle phase with standardised participant presentation.
(1) 使用双能 X 射线吸收法、标准亮度模式超声和皮褶测量法比较活跃女性月经周期中身体成分估计值的变化；(2) 比较标准亮度模式超声和皮褶测量法对双能 X 射线吸收法脂肪质量估计的预测能力。
30 名活跃的女性（27±5 岁），月经周期正常，参加了一项横断面研究。
参与者根据个人的月经周期安排完成了四次评估。这些评估分别在她们的(1)早期卵泡期、(2)中晚期卵泡期、(3)中期黄体期和(4)第二个早期卵泡期进行。使用双能 X 射线吸收法获取身体成分估计值，使用标准亮度模式超声测量八个部位的皮下脂肪组织厚度，并用皮褶测量法测量。
标准亮度模式超声和皮褶测量的八个皮下脂肪组织厚度总和在不同周期阶段之间没有差异（p>0.05）。体重和双能 X 射线吸收法总质量估计值以及双能 X 射线吸收法估计的总和区域瘦体重和脂肪质量也在不同周期阶段之间没有差异（p>0.05），任何变化都在各自最小有意义变化值的 95%置信区间内。
在活跃的月经正常女性中，标准亮度模式超声和皮褶测量的八个皮下脂肪组织厚度总和或双能 X 射线吸收法总和区域组织质量估计值在月经周期内没有真正有意义的变化。因此，在这个人群中，在任何周期阶段都可以通过这些方法评估身体成分，只要有标准化的参与者表现。
