Silva Junior Marcos Cezar Pitombo da, Silva Diego Augusto Santos, Martins Priscila Custódio, Bueno Nassib Bezerra, Moura Fabiana Andréa, Lima Luiz Rodrigo Augustemak de
Universidade Federal de Alagoas, Maceió, AL, Brazil.
Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
Rev Paul Pediatr. 2025 Jul 28;43:e2024277. doi: 10.1590/1984-0462/2025/43/2024277. eCollection 2025.
To analyze the association between phase angle (PhA) and bioelectrical impedance vector analysis (BIVA) with aerobic fitness in HIV+ adolescents.
Aerobic fitness was assessed using the modified Canadian Aerobic Fitness Test, PhA, and BIVA by bioelectrical impedance analysis. Multivariable linear regression was performed to test the association between peak oxygen consumption (peak VO2) and PhA. BIVA ellipses were evaluated considering a reference population of Spanish adolescents.
Forty-seven HIV-infected adolescents (10-18 years old) were included; 25 (53%) were females. Mean peak VO2 and PhA were 48.9 standard deviation (±) 7.0 ml.kg-1.min-1 and 4.6±1.4 degrees, respectively. Multivariable analysis revealed a significant positive association between peak VO2 and PhA (βstd=0.349; p=0.025). Peak VO2 adjusted for covariates explained 49% of PhA variation. BIVA ellipses indicated lower classifications for body cell mass (BCM) and fatfree mass (FFM) in HIV+ adolescents (vs reference population) (p<0.001). HIV+ females (vs HIV+ males) showed a higher classification for dehydration and a lower classification for BCM (p=0.007). No relevant differences were found between the subgroups based on aerobic fitness (p=0.735).
A significant association exists between peak VO2 and PhA in HIV+ adolescents. Alterations in hydration and lower classifications for BCM and FFM were observed in this population.
分析HIV感染青少年的相角（PhA）和生物电阻抗矢量分析（BIVA）与有氧适能之间的关联。
采用改良的加拿大有氧适能测试、通过生物电阻抗分析测定的PhA和BIVA评估有氧适能。进行多变量线性回归以检验最大摄氧量（peak VO2）与PhA之间的关联。基于西班牙青少年的参考人群评估BIVA椭圆。
纳入了47名HIV感染青少年（10 - 18岁）；其中25名（53%）为女性。平均peak VO2和PhA分别为48.9标准差（±）7.0 ml·kg-1·min-1和4.6±1.4度。多变量分析显示peak VO2与PhA之间存在显著正相关（βstd = 0.349；p = 0.025）。经协变量调整后的peak VO2解释了49%的PhA变异。BIVA椭圆表明HIV感染青少年（与参考人群相比）的体细胞质量（BCM）和去脂体重（FFM）分类较低（p < 0.001）。HIV感染女性（与HIV感染男性相比）脱水分类较高，BCM分类较低（p = 0.007）。基于有氧适能的亚组之间未发现相关差异（p = 0.735）。
HIV感染青少年的peak VO2与PhA之间存在显著关联。在该人群中观察到了水合状态的改变以及BCM和FFM的较低分类。
