PDF(Pubmed)
Abstract：
OBJECTIVE: Time-restricted feeding (TRF) is a dietary pattern that alternates between periods of fasting and feeding, which has gained significant attention in recent years. The 16/8 approach consists of fasting for 16 h and feeding for an 8-h window, while the 12/12 method consists of fasting for 12 h and a 12-h feeding window. Limited research exists comparing the effects of these methods coupled with physical activity (PA). The aim of this investigation was to examine the acute effects between conditions of varying TRF durations (12 and 16 h) and PA intensities on the fat oxidation rate (FOR). It was hypothesized that i) the TRF16 conditions would exhibit higher FORmax and that PA would enhance these effects, and ii) High Intensity Interval Training (HIIT) would result in greater effects on FORmax compared to Low-Moderate Intensity Steady State Continuous Training (MICT) PA.
RESULTS: Eighteen young adults (age: 23 ± 2.0 yrs., body mass index: 23.5 ± 2.8 kg·m-2) were recruited and participated in the supervised intervention. The discrete component open circuit spirometry system was used to measure oxygen consumption (VO2), and Frayne\'s equation was used to determine the FOR plus FORmax. ANOVA was used to determine pre/post-intervention differences in FORmax. The FORmax for the TRF16 + HIIT intervention was significantly higher than the TRF12 (mean difference = 0.099 g·min-1, p = 0.011, 95% CI 0.017 to 0.180) and TRF16 fast alone (mean difference = 0.093 g·min-1, p = 0.002, 95% CI 0.027 to 0.159). The FORmax for TRF12 + HIIT intervention was significantly higher than the TRF12 fast alone (mean difference = 0.070 g·min-1, p = 0.023, 95% CI 0.007 to 0.134). The TRF16 + HIIT intervention was also significantly higher than the TRF12 fast alone (mean difference = 0.099 g·min-1, p = 0.011, 95% CI 0.017 to 0.180).
CONCLUSIONS: This study contributes to the ever-growing body of literature on the acute effects of TRF and PA on young adult males and females. The findings suggest that the TRF16 + HIIT PA intervention results in the highest FORmax.
BACKGROUND: Retrospective Registration ISRCTN # 10076373 (October 6, 2023).
RESULTS: Eighteen young adults (age: 23 ± 2.0 yrs., body mass index: 23.5 ± 2.8 kg·m-2) were recruited and participated in the supervised intervention. The discrete component open circuit spirometry system was used to measure oxygen consumption (VO2), and Frayne\'s equation was used to determine the FOR plus FORmax. ANOVA was used to determine pre/post-intervention differences in FORmax. The FORmax for the TRF16 + HIIT intervention was significantly higher than the TRF12 (mean difference = 0.099 g·min-1, p = 0.011, 95% CI 0.017 to 0.180) and TRF16 fast alone (mean difference = 0.093 g·min-1, p = 0.002, 95% CI 0.027 to 0.159). The FORmax for TRF12 + HIIT intervention was significantly higher than the TRF12 fast alone (mean difference = 0.070 g·min-1, p = 0.023, 95% CI 0.007 to 0.134). The TRF16 + HIIT intervention was also significantly higher than the TRF12 fast alone (mean difference = 0.099 g·min-1, p = 0.011, 95% CI 0.017 to 0.180).
CONCLUSIONS: This study contributes to the ever-growing body of literature on the acute effects of TRF and PA on young adult males and females. The findings suggest that the TRF16 + HIIT PA intervention results in the highest FORmax.
BACKGROUND: Retrospective Registration ISRCTN # 10076373 (October 6, 2023).
摘要：
目的：限时喂养（TRF）是一种在禁食和进食之间交替的饮食模式，近年来获得了极大的关注。16/8方法包括禁食16小时和喂食8小时的窗口，而12/12方法包括禁食12小时和12小时进食窗口。比较这些方法与身体活动（PA）的效果的研究有限。这项研究的目的是研究不同TRF持续时间（12和16小时）和PA强度对脂肪氧化率（FOR）的急性影响。假设i)TRF16条件将表现出更高的FORmax，并且PA将增强这些效果，和ii）高强度间歇训练（HIIT）与低中强度稳态连续训练（MICT）PA相比，会对FORmax产生更大的影响。
结果：18名年轻人（年龄：23±2.0岁。,身体质量指数：23.5±2.8kg·m-2）被招募并参与监督干预。分立元件开路肺活量测定系统用于测量耗氧量(VO2)，和Frayne的方程被用来确定FOR+FORmax。方差分析用于确定干预前/后FORmax的差异。TRF16+HIIT干预的FORmax显著高于TRF12(平均差=0.099g·min-1,p=0.011,95%CI0.017~0.180)和单独TRF16Fast(平均差=0.093g·min-1,p=0.002,95%CI0.027~0.159)。TRF12+HIIT干预的FORmax显著高于单独TRF12快速干预(平均差=0.070g·min-1,p=0.023,95%CI0.007~0.134)。TRF16+HIIT干预也显著高于单独的TRF12(平均差异=0.099g·min-1,p=0.011,95%CI0.017~0.180)。
结论：这项研究有助于不断增加的关于TRF和PA对年轻成年男性和女性的急性影响的文献。研究结果表明，TRF16+HIITPA干预导致最高的FORmax。
背景：回顾性注册ISRCTN＃10076373（2023年10月6日）。
结果：18名年轻人（年龄：23±2.0岁。,身体质量指数：23.5±2.8kg·m-2）被招募并参与监督干预。分立元件开路肺活量测定系统用于测量耗氧量(VO2)，和Frayne的方程被用来确定FOR+FORmax。方差分析用于确定干预前/后FORmax的差异。TRF16+HIIT干预的FORmax显著高于TRF12(平均差=0.099g·min-1,p=0.011,95%CI0.017~0.180)和单独TRF16Fast(平均差=0.093g·min-1,p=0.002,95%CI0.027~0.159)。TRF12+HIIT干预的FORmax显著高于单独TRF12快速干预(平均差=0.070g·min-1,p=0.023,95%CI0.007~0.134)。TRF16+HIIT干预也显著高于单独的TRF12(平均差异=0.099g·min-1,p=0.011,95%CI0.017~0.180)。
结论：这项研究有助于不断增加的关于TRF和PA对年轻成年男性和女性的急性影响的文献。研究结果表明，TRF16+HIITPA干预导致最高的FORmax。
背景：回顾性注册ISRCTN＃10076373（2023年10月6日）。
