Holsworth Research Initiative, La Trobe Rural Health School, La Trobe University, Australia.
School of Allied Health, Human Services and Sport, La Trobe University, Australia.
J Sci Med Sport. 2020 Oct;23(10):902-907. doi: 10.1016/j.jsams.2020.02.015. Epub 2020 Mar 6.
To investigate the acute glyacaemic response to accumulated or single bout walking exercise in apparently healthy adults.
Three arm, randomised crossover control study.
Ten adults (age: 50±12.6 y; BMI 29.0±5.4kgm) completed three separate trials comprising three 10-min walking bouts after breakfast, lunch, and dinner (APPW), a single 30-min walking bout after dinner only (CPPW), or a no-exercise control (NOEX). Participants walked on a treadmill at a moderate intensity of 55%-70% heart rate reserve. Two-hour postprandial glucose response was assessed using a continuous glucose monitor.
There was a difference in the pattern of the glucose response between the trials during the two hours following dinner (p<0.001). Postprandial dinner glucose concentrations were not different between APPW and CPPW but were up to 1.01mmolL lower than NOEX (partial eta=0.21, p=0.041).
Ten minutes of moderate intensity walking completed 30min after each meal lowers postprandial dinner glucose concentrations in comparison to no-exercise, and reduces glucose by a similar magnitude as a single 30-min bout after the evening meal. Short bouts of exercise after each meal may be recommended to minimise glucose elevations after dinner that might increase risk of cardiometabolic disease.
研究在健康成年人中，累积或单次散步运动对急性血糖反应的影响。
三臂、随机交叉对照研究。
10 名成年人（年龄：50±12.6 岁；BMI 29.0±5.4kg/m）完成了三项单独的试验，包括早餐、午餐和晚餐后进行三次 10 分钟的散步（APPW）、晚餐后进行一次 30 分钟的散步（CPPW）或不进行运动的对照（NOEX）。参与者在跑步机上以 55%-70%心率储备的中等强度行走。使用连续血糖监测仪评估餐后 2 小时的血糖反应。
在晚餐后 2 小时内，三种试验的血糖反应模式存在差异（p<0.001）。APPW 和 CPPW 餐后晚餐血糖浓度没有差异，但比 NOEX 低 1.01mmol/L（部分 eta=0.21，p=0.041）。
与不运动相比，每餐 30 分钟后进行 10 分钟中等强度的散步可降低餐后晚餐血糖浓度，并降低与单次 30 分钟晚饭后散步相似的幅度。建议每餐之后进行短暂的运动，以尽量减少晚餐后血糖升高，从而降低患心血管代谢疾病的风险。
