Wu Bo, Qiu Lanlan, Lin Yun, Lin Qian, Pan Yuxiong
Department of Cardiology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China.
Department of Cardiology, Longyan People's Hospital, Longyan, China.
Front Nutr. 2024 Sep 26;11:1442710. doi: 10.3389/fnut.2024.1442710. eCollection 2024.
Cardiorespiratory fitness (CRF) is a vital indicator of overall health and cardiovascular efficiency. Systemic inflammation significantly impacts CRF, and reducing systemic inflammation may serve as an effective strategy to improve CRF. Diet plays a crucial role in systemic inflammation, but daily dietary intake typically involves multiple elements rather than a single nutrient. The Dietary Inflammatory Index (DII) provides an overall assessment of dietary inflammation on the basis of the anti-inflammatory and pro-inflammatory effects of the nutrients consumed. However, the relationship between DII and CRF is not yet well understood.
To examine the association between the DII and CRF.
This study analyzed 3,087 participants from the National Health and Nutrition Examination Survey (NHANES) between 1999 and 2002. The study subjects were divided into three distinct groups by DII tertile: T1 ( = 1,027), T2 ( = 1,029), and T3 ( = 1,031). The associations between DII levels and CRF were examined via logistic regression analysis and restricted cubic splines (RCSs).
Elevated DII scores were significantly linked to low CRF levels. Compared with those in the lowest tertile, participants in the highest DII tertile exhibited a greater prevalence of low CRF (T1: 10.85%, T2: 16.32%, T3: 19.31%). In the model with full adjustments, elevated scores on the DII were consistently linked with a heightened likelihood of low CRF (OR: 1.17, 95% CI: 1.07-1.28; < 0.001). Compared with those in the T1 group, participants with higher DIIs had an increased risk of lower CRF (T2: OR: 1.42, 95% CI: 1.01-2.01, = 0.046; T3: OR: 1.71, 95% CI: 1.22-2.40, = 0.003). Additionally, a significant interaction ( = 0.045) between sex and the DII for low CRF was observed within the population.
A higher DII score is linked to an elevated risk of low CRF. Moreover, sex can impact CRF, with women being more prone to low CRF.
心肺适能（CRF）是整体健康和心血管效率的重要指标。全身炎症会显著影响CRF，减轻全身炎症可能是改善CRF的有效策略。饮食在全身炎症中起着关键作用，但日常饮食摄入通常涉及多种元素而非单一营养素。饮食炎症指数（DII）基于所摄入营养素的抗炎和促炎作用，对饮食炎症进行全面评估。然而，DII与CRF之间的关系尚未得到充分了解。
研究DII与CRF之间的关联。
本研究分析了1999年至2002年期间来自美国国家健康与营养检查调查（NHANES）的3087名参与者。研究对象根据DII三分位数分为三个不同组：T1（=1027）、T2（=1029）和T3（=1031）。通过逻辑回归分析和受限立方样条（RCS）研究DII水平与CRF之间的关联。
DII得分升高与低CRF水平显著相关。与最低三分位数组相比，DII最高三分位数组的参与者低CRF患病率更高（T1：10.85%，T2：16.32%，T3：19.31%）。在完全调整模型中，DII得分升高始终与低CRF可能性增加相关（比值比：1.17，95%置信区间：1.07 - 1.28；P < 0.001）。与T1组相比，DII较高的参与者CRF较低的风险增加（T2：比值比：1.42，95%置信区间：1.01 - 2.01，P = 0.046；T3：比值比：1.71，95%置信区间：1.22 - 2.40，P = 0.003）。此外，在人群中观察到性别与DII之间在低CRF方面存在显著交互作用（P = 0.045）。
较高的DII得分与低CRF风险升高相关。此外，性别会影响CRF，女性更容易出现低CRF。
