The University of Western Australia, School of Human Sciences (Exercise and Sport Science), Australia.
Curtin University, School of Allied Health, Australia.
J Sci Med Sport. 2022 Jul;25(7):548-552. doi: 10.1016/j.jsams.2022.03.016. Epub 2022 Mar 29.
To investigate the impact of acute food and fluid intake or hydration status on the standardised brightness-mode ultrasound measurement of subcutaneous adipose tissue thickness.
Thirty active adults (female n = 10) participated in a randomised cross over study.
Participants completed three body composition assessment sessions via standardised brightness-mode ultrasound and Dual-energy X-ray absorptiometry. Participants were assessed under standardised presentation during 'food only' and 'food plus water' sessions at baseline and reassessed after their allotted intake. 'Hypohydration plus water' was undertaken in a hypohydrated state at baseline and reassessed after water intake.
The sum of eight subcutaneous adipose tissue thickness was lower when measured after 'food only' or 'food plus water' compared to baseline (-0.1 to -0.9 mm; p < 0.01). However, these changes were less than the 95% confidence interval of the technical error of measurement of the investigator. Body mass, dual-energy x-ray absorptiometry total and trunk mass, lean mass and trunk lean mass estimates increased (p < 0.01) following 'food only' or 'food plus water', and decreased with hypohydration (p < 0.01). Total and regional fat mass estimates were not impacted.
The sum of eight subcutaneous adipose tissue thickness measured via standardised brightness-mode ultrasound was unaffected by acute food and fluid consumption or hydration status changes. Comparatively, these interventions altered dual-energy x-ray absorptiometry body composition estimates, especially that of lean mass components. Standardised brightness-mode ultrasound can therefore be used to monitor changes in fat patterning when standardised client presentation is not practically achievable.
研究急性食物和液体摄入或水合状态对标准化亮度模式超声测量皮下脂肪组织厚度的影响。
30 名活跃成年人（女性 n=10）参加了一项随机交叉研究。
参与者通过标准化亮度模式超声和双能 X 射线吸收法完成了三次身体成分评估。参与者在基线时进行了“仅食物”和“食物加水”的标准呈现评估，并在规定摄入量后重新评估。在基线时处于脱水状态下进行“脱水加水”，并在摄入水分后重新评估。
与基线相比，“仅食物”或“食物加水”后测量的 8 个皮下脂肪组织厚度总和较低（-0.1 至-0.9mm；p<0.01）。然而，这些变化小于测量者技术误差的 95%置信区间。仅食物或食物加水后，体重、双能 X 射线吸收法的总体重和躯干质量、瘦体重和躯干瘦体重估计值增加（p<0.01），脱水时则减少（p<0.01）。总脂肪量和区域脂肪量估计值不受影响。
通过标准化亮度模式超声测量的 8 个皮下脂肪组织厚度总和不受急性食物和液体摄入或水合状态变化的影响。相比之下，这些干预改变了双能 X 射线吸收法的身体成分估计值，特别是瘦体重成分。因此，当无法实际实现标准化的客户呈现时，标准化亮度模式超声可用于监测脂肪分布的变化。
