Abstract：
BACKGROUND: Several studies have revealed the positive healthy impacts of branched-chain fatty acids (BCFAs). However, most of these studies evaluated the serum BCFAs in humans, or treatment with exogenous BCFAs in animal or in-vitro models and the health impacts of dietary BCFAs have not yet been studied. Due to positive effects of BCFAs in sport, in the current study, we aimed to investigate the association between dietary BCFAs and metabolic and inflammatory parameters among elite and subelite soccer players.
METHODS: A cross-sectional study was carried out among 335 elite and subelite soccer players (196 male), aged between 20 and 45 years old. Soccer players were enrolled from 32 teams under the directive of The Chinese Football Association. Demographic, anthropometric, and dietary assessments were performed and laboratory measurement including serum lipids, glycemic markers, and high-sensitivity C-reactive protein was measured.
RESULTS: Those with the highest dietary BCFAs consumption had higher appetite (p = .009). Also, high consumption of dietary BCFAs was associated with lower diastolic blood pressure (odds ratio: 0.958; confidence interval: 0.918-0.999; p = .046) and low high-sensitivity C-reactive protein concentrations in the third tertile of dietary BCFAs (odds ratio: 0.431; confidence interval: 0.300-0.618; p < .001). No other association between biochemical variables and dietary BCFAs was found.
CONCLUSIONS: As shown in the current study, higher dietary BCFAs consumption was associated with lower diastolic blood pressure and inflammation. Due to very limited number of studies, further studies are needed to have a better perspective of these associations and their underlying mechanisms.
METHODS: A cross-sectional study was carried out among 335 elite and subelite soccer players (196 male), aged between 20 and 45 years old. Soccer players were enrolled from 32 teams under the directive of The Chinese Football Association. Demographic, anthropometric, and dietary assessments were performed and laboratory measurement including serum lipids, glycemic markers, and high-sensitivity C-reactive protein was measured.
RESULTS: Those with the highest dietary BCFAs consumption had higher appetite (p = .009). Also, high consumption of dietary BCFAs was associated with lower diastolic blood pressure (odds ratio: 0.958; confidence interval: 0.918-0.999; p = .046) and low high-sensitivity C-reactive protein concentrations in the third tertile of dietary BCFAs (odds ratio: 0.431; confidence interval: 0.300-0.618; p < .001). No other association between biochemical variables and dietary BCFAs was found.
CONCLUSIONS: As shown in the current study, higher dietary BCFAs consumption was associated with lower diastolic blood pressure and inflammation. Due to very limited number of studies, further studies are needed to have a better perspective of these associations and their underlying mechanisms.
摘要：
背景：一些研究揭示了支链脂肪酸（BCFA）的积极健康影响。然而,这些研究大多评估了人类的血清BCFAs，或在动物或体外模型中用外源性BCFAs治疗以及饮食BCFAs对健康的影响尚未研究。由于BCFAs在体育运动中的积极作用，在目前的研究中，我们旨在调查精英和亚精英足球运动员的饮食BCFAs与代谢和炎症参数之间的关系。
方法：对335名精英和亚精英足球运动员（196名男性）进行了横断面研究，年龄在20至45岁之间。根据中国足协的指示，从32支球队中招募了足球运动员。人口统计,人体测量学,和饮食评估进行和实验室测量，包括血脂，血糖标志物,并测定高敏C反应蛋白。
结果：饮食BCFAs消费量最高的人食欲较高（p=.009）。此外，膳食BCFA的高消费与舒张压降低(比值比:0.958;置信区间:0.918-0.999;p=.046)和膳食BCFA的第三三分位数中的低高敏C反应蛋白浓度相关(比值比:0.431;置信区间:0.300-0.618;p<.001).在生化变量和饮食BCFA之间没有发现其他关联。
结论：如当前研究所示，较高的膳食BCFAs消耗与较低的舒张压和炎症相关。由于研究数量非常有限，需要进一步的研究才能更好地了解这些关联及其潜在机制.
方法：对335名精英和亚精英足球运动员（196名男性）进行了横断面研究，年龄在20至45岁之间。根据中国足协的指示，从32支球队中招募了足球运动员。人口统计,人体测量学,和饮食评估进行和实验室测量，包括血脂，血糖标志物,并测定高敏C反应蛋白。
结果：饮食BCFAs消费量最高的人食欲较高（p=.009）。此外，膳食BCFA的高消费与舒张压降低(比值比:0.958;置信区间:0.918-0.999;p=.046)和膳食BCFA的第三三分位数中的低高敏C反应蛋白浓度相关(比值比:0.431;置信区间:0.300-0.618;p<.001).在生化变量和饮食BCFA之间没有发现其他关联。
结论：如当前研究所示，较高的膳食BCFAs消耗与较低的舒张压和炎症相关。由于研究数量非常有限，需要进一步的研究才能更好地了解这些关联及其潜在机制.
