Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan, ROC.
Department of Psychology, Northeastern University, Boston, MA, USA.
Sci Rep. 2021 Apr 28;11(1):9137. doi: 10.1038/s41598-021-88634-5.
It is difficult to draw conclusions about the effect of resistance exercises on information processing speed and inhibitory control from previous studies due to possible underestimations of maximal strength and the lack of information on the intervention programs. To address this issue, a familiarization of resistance exercise was introduced before the strength test, and the repetition-to-fatigue method was used to calculate the 1RM (one repetition max). A two-arm RCT was conducted to evaluate the cognitive effect of resistance exercise. Male adults aged 50-65 years old performed a single bout of multiple joint, structural barbell resistance exercises (back squat, press, and deadlift) with 75% 1RM * 5 repetitions * 3 sets with 2-3 min rest between sets and exercises or a stretching exercise session (active-control intervention). This type of resistance exercise improved the information processing speed measured by Stroop task reaction time (t(23) = - 2.313, p = .030, M = - 16 ms, 95% CI [- 30, - 2]) and decreased the conflict-related neural activity measured by event-related potential N2b in both congruent (t(20) = 2.674, p = .015, M = 2.290 μv, 95% CI [0.504, 4.075]) and incongruent (t(20) = 2.851, p = .018, M = 2.291 μv, 95% CI [0.439, 4.142]) conditions. Resistance exercise significantly improved information processing speed and decrease conflict-related neural activity, but did not change inhibitory control in older adults compared to active control.Trial registration: NCT04534374 (01/09/2020).
由于可能低估最大力量以及缺乏干预计划的信息，以前的研究很难得出关于抗阻运动对信息处理速度和抑制控制影响的结论。为了解决这个问题，在力量测试前引入了抗阻运动的熟悉阶段，并使用重复至疲劳的方法来计算 1RM（一次重复最大）。一项双臂 RCT 用于评估抗阻运动的认知效果。50-65 岁的男性成年人进行了一次多关节、结构性杠铃抗阻运动（深蹲、卧推和硬拉），使用 75%的 1RM5 次3 组，组间和组间休息 2-3 分钟，或进行拉伸运动（主动对照干预）。这种类型的抗阻运动提高了 Stroop 任务反应时间（t(23)=-2.313，p=0.030，M=-16ms，95%CI[-30，-2]）测量的信息处理速度，并且降低了事件相关电位 N2b 测量的冲突相关神经活动在两种情况下都得到了改善：一致（t(20)=2.674，p=0.015，M=2.290μv，95%CI[0.504，4.075]）和不一致（t(20)=2.851，p=0.018，M=2.291μv，95%CI[0.439，4.142]）。与主动对照相比，抗阻运动显著提高了老年人的信息处理速度，降低了冲突相关的神经活动，但没有改变抑制控制。
NCT04534374（2020 年 9 月 1 日）。
