Department of Physical Therapy, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil.
Top Stroke Rehabil. 2021 Jul;28(5):321-330. doi: 10.1080/10749357.2020.1816074. Epub 2020 Sep 3.
Aerobic training can improve cardiorespiratory fitness in individuals after stroke. However, the effects of short-term and long-term detraining are not well known.
To determine the effects of short-term (1-month) and long-term (6-month) detraining on cardiorespiratory fitness (VO) of individuals after stroke, who participated in aerobic training.
A cohort study was developed. Twenty adults (57 ± 11 years old) with stroke were included. After completing an outpatient aerobic training, participants were divided into gain group (VO increase >1.3 ml.kg.min from before to immediately after the training) or non-gain group (VO change ≤1.3 ml.kg.min). Cardiorespiratory fitness (VO), obtained by the cardiopulmonary exercise test was assessed one and 6 months after the end of the training (short- and long-term detraining, respectively), or collected retrospectively from patient chart (before and after the training).
There was found a significant interaction effect (time*group) for VO (= 6.108;). Higher values in the VO observed in the gain group with the aerobic training (F = 25.86; < .001) were significantly reduced with short-term detraining, reaching values similar to that observed before the training and to that of the non-gain group (F = 14.81;= .001). Both groups had similar VO values within long-term detraining (F = 2.70;= .12), with no significant differences from the values observed before the training and after short-term detraining (0.11 ≤ ≤ 1.00).
Detraining on cardiorespiratory fitness of individuals after chronic stroke occurred within only 1 month. Therefore, it is important to maintain aerobic training throughout life.
有氧运动训练可以提高中风后个体的心肺功能适应性。然而，短期和长期停训的影响尚不清楚。
确定短期（1 个月）和长期（6 个月）停训对参加有氧运动训练的中风后个体心肺功能适应性（VO）的影响。
开展了一项队列研究。共纳入 20 名成年人（57±11 岁）中风患者。在完成门诊有氧运动训练后，参与者被分为获益组（VO 增加>1.3ml.kg.min，与训练前相比即刻增加）或非获益组（VO 变化≤1.3ml.kg.min）。心肺功能适应性（VO）通过心肺运动试验获得，分别在训练结束后 1 个月和 6 个月（短期和长期停训）进行评估，或从患者病历中回顾性收集（训练前和训练后）。
VO 存在显著的时间*组交互效应（=6.108）。在有氧运动训练中，获益组的 VO 观察值较高（F=25.86；<0.001），短期停训后显著降低，达到与训练前和非获益组相似的水平（F=14.81；=0.001）。在长期停训期间，两组的 VO 值相似（F=2.70；=0.12），与训练前和短期停训后的 VO 值无显著差异（0.11≤≤1.00）。
慢性中风后个体的心肺功能适应性在仅 1 个月内就出现了停训。因此，终生维持有氧运动训练非常重要。
