真实场景中的运动零食改善2型糖尿病餐后高血糖与血糖变异性
采用随机交叉设计，在31例非胰岛素治疗且血糖控制良好的2型糖尿病患者中比较真实场景下运动零食（ES）与不运动对照（CON）对持续葡萄糖监测指标的影响。ES使血糖变异性多项指标及早餐、晚餐后2小时血糖反应显著改善，但48小时平均血糖差异未达统计学意义。
要点
- 每日4分钟自重高强度运动零食可小幅但显著改善血糖变异性指标
- 早餐和晚餐后2小时血糖平均值、峰值及曲线下面积显著降低
- 48小时平均血糖较对照下降0.2 mmol/l但未达统计学显著（p=0.07）
核心结论
- 在血糖控制良好、非胰岛素治疗的2型糖尿病患者中，每日共4分钟自重运动零食可小幅但显著改善血糖变异性及餐后高血糖，平均血糖差异未达统计学意义。
研究设计与样本
- 随机、交叉、平衡顺序设计，在真实世界标准化饮食下比较连续两天运动零食与连续两天不运动两种条件。
- 运动零食条件为连续两天每日完成4次1分钟自重高强度运动，由邮件发送的教学视频指导；对照条件为连续两天不运动。
- 主要结局为每种条件下48小时平均血糖，次要结局包括标准化餐食后2小时餐后血糖反应及血糖变异性指标。
主要发现
- ES与CON之间平均血糖差异为-0.2 mmol/l（95%CI -0.4, 0.0；p=0.07），未达统计学显著。
- ES条件下标准差为-0.1 mmol/l（95%CI -0.2, -0.1；p<0.001），变异系数为-1%（95%CI -2, 0；p=0.007）。
- ES条件下血糖波动平均幅度为-0.3 mmol/l（95%CI -0.5, 0.0；p=0.04），严格目标范围内时间为3%（95%CI 0, 6；p=0.04）。
- ES条件下早餐和晚餐后2小时血糖平均值、峰值、曲线下面积及增量曲线下面积均显著低于CON（均p<0.05）。
关键数值与推荐
- 主要结局48小时平均血糖组间差异-0.2 mmol/l（95%CI -0.4, 0.0；p=0.07）。
- 标准差-0.1 mmol/l（95%CI -0.2, -0.1；p<0.001）；变异系数-1%（95%CI -2, 0；p=0.007）。
- 血糖波动平均幅度-0.3 mmol/l（95%CI -0.5, 0.0；p=0.04）；严格目标范围内时间3%（95%CI 0, 6；p=0.04）。
- 早餐和晚餐后2小时餐后血糖各项指标在ES条件下均显著低于CON（均p<0.05）。
临床怎么用
- 对既往不活动、血糖控制良好的非胰岛素治疗2型糖尿病患者，可考虑推荐每日共4分钟自重高强度运动零食作为改善餐后血糖和血糖变异性的低门槛方式。
- 运动零食可借助邮件发送教学视频指导，在真实世界环境中实施，每次1分钟、每日4次、连续进行。
- 应告知患者该方式对48小时平均血糖的改善未达统计学显著，主要获益体现在血糖变异性和餐后血糖指标上。
局限性
- 样本量较小（n=31），且限于既往不活动、血糖控制良好、非胰岛素治疗的2型糖尿病患者。
- 干预仅持续两天，未评估长期坚持性及长期血糖结局。
- 平均血糖主要结局未达统计学显著，血糖变异性改善幅度较小。
以上解读依据论文摘要（全文未开放获取或许可不允许翻译转载）。
原文
AIMS/HYPOTHESIS: Using a randomised, crossover design, we investigated whether exercise snacks could improve indices of glucose regulation assessed by continuous glucose monitoring, compared with an equivalent no-exercise control period in people living with non-insulin-treated type 2 diabetes. METHODS: Previously inactive participants with well-controlled type 2 diabetes (n=31; 21 female participants, ten male participants; approximately 58 years old, BMI approximately 31 kg/m2, HbA1c approximately 48 mmol/mol [6.6%]) completed two experimental conditions in a randomised, counterbalanced order in the real world under a standardised diet. During the exercise snacks condition (ES), participants completed four 1 min bouts of vigorous bodyweight exercise on two consecutive days, guided by instructional videos sent via email. The control condition (CON) involved two consecutive days of no exercise. Participants wore a continuous glucose monitor and a Fitbit watch to record glycaemic responses and heart rate, respectively. The primary outcome was mean glucose during each 48 h condition. Secondary outcomes included 2 h postprandial glucose responses after standardised meals and markers of glycaemic variability. RESULTS: The difference in mean glucose between ES and CON did not reach statistical significance (between-condition difference -0.2 mmol/l; 95% CI -0.4, 0.0; p=0.07). However, small but statistically significant improvements in standard deviation (-0.1 mmol/l; 95% CI -0.2, -0.1; p<0.001), coefficient of variation (-1%; 95% CI -2, 0; p=0.007), mean amplitude of glycaemic excursions (-0.3 mmol/l; 95% CI -0.5, 0.0; p=0.04) and time in tight range (3%; 95% CI 0, 6; p=0.04) were seen under the ES condition compared with CON. The 2 h postprandial glucose average, peak, area under the curve and incremental area under the curve were also significantly lower after breakfast and dinner during the ES condition compared with CON (all p<0.05). CONCLUSIONS/INTERPRETATION: Bodyweight exercise snacks totalling 4 min of vigorous activity per day led to small, yet statistically significant improvements in indices of glycaemic variability and postprandial hyperglycaemia in insufficiently active individuals living with well-controlled type 2 diabetes. Trial registration ClinicalTrials.gov NCT06382246.
引用
- Babir FJ, Marcotte-Chénard A, Sandilands RE, et al. Exercise snacks performed in real-world settings reduce postprandial hyperglycaemia and glycaemic variability in individuals living with type 2 diabetes: a randomised crossover study. Diabetologia. 2026. PMID: 42029706. doi:10.1007/s00125-026-06741-2
供执业医师工作参考，不替代临床判断；数值与分级以指南原文为准。