Smith J D, Guerra G, Symons T B, Kwon E H, Yoon E J
Department of Counseling, Health and Kinesiology, College of Education and Human Development, Texas A&M University-San Antonio, San Antonio, Texas, USA.
Department of Exercise and Sport Science, St. Mary's University, San Antonio, Texas, USA.
Can Prosthet Orthot J. 2023 Nov 10;6(1):41605. doi: 10.33137/cpoj.v6i1.41605. eCollection 2023.
There is a dearth of literature evaluating the accuracy of Air Displacement Plethysmography (ADP) compared to Dual-energy X-ray Absorptiometry (DXA) for assessing body composition in individuals with lower limb amputations. Validity of ADP in persons with lower limb amputations must be established.
The objective of this study was to compare body composition in persons with lower limb amputations using the BOD POD and DXA.
Body composition was performed on eleven lower limb prosthesis users (age 53.2±14.3 years, weight 81.9±22.3kg) using ADP and DXA with and without prosthesis.
Repeated measures ANOVA indicated no significant difference in body composition among and between trials, F(3,8)= 3.36, p= 0.075. There were no significant differences in Body Fat (BF) percentage with and without prostheses on the BOD POD (28.5±15.7% and 33.7±12.1%, respectively) nor the DXA (32.9±10.6% and 32.0±9.9%, respectively). Association between the BOD POD and DXA were greatest when prostheses were not worn compared to when they were worn. Bland-Altman plots indicate agreement between BOD POD and DXA was greatest while wearing the prosthesis.
This study is a first to compare total body fat percent between the BOD POD and DXA in lower limb prosthesis users. BOD POD report valid indices of BF%. Future work will utilize the BOD POD in intervention studies for monitoring body composition changes across the continuum of rehabilitation.
与双能X线吸收法（DXA）相比，评估下肢截肢患者身体成分时，关于空气置换体积描记法（ADP）准确性的文献较少。必须确定ADP在下肢截肢患者中的有效性。
本研究的目的是比较使用BOD POD和DXA评估下肢截肢患者的身体成分。
对11名下肢假肢使用者（年龄53.2±14.3岁，体重81.9±22.3kg）在佩戴和不佩戴假肢的情况下使用ADP和DXA进行身体成分测量。
重复测量方差分析表明，各试验之间及试验内身体成分无显著差异，F(3,8)= 3.36，p = 0.075。在BOD POD上，佩戴和不佩戴假肢时的体脂（BF）百分比无显著差异（分别为28.5±15.7%和33.7±12.1%），在DXA上也无显著差异（分别为32.9±10.6%和32.0±9.9%）。与佩戴假肢时相比，不佩戴假肢时BOD POD与DXA之间的相关性最强。Bland-Altman图表明，佩戴假肢时BOD POD与DXA之间的一致性最强。
本研究首次比较了下肢假肢使用者中BOD POD和DXA的全身脂肪百分比。BOD POD报告的BF%指数有效。未来的工作将在干预研究中利用BOD POD来监测康复过程中身体成分的变化。
