J Gerontol Nurs. 2024 Sep;50(9):31-36. doi: 10.3928/00989134-20240809-07. Epub 2024 Sep 1.
To analyze cardiorespiratory fitness (CRF) levels using the gold-standard, laboratory-based cardiopulmonary exercise test (CPET) in community-dwelling older adults ( = 145) with amnestic mild cognitive impairment (aMCI), specifically CPET feasibility, CRF prediction, and CRF status in comparison to published sedentary, cognitively normal, age- and sex-adjusted normative data.
Peak oxygen consumption (VO [mL/kg/min]) was assessed by CPET, which was categorized as submaximal, near-maximal, or maximal tests. VO predicted was compared to VO measured to assess its utility. Data were analyzed with tests.
Participants' mean age was 73.77 years ( = 5.74 years), with 51.7% males, 91.7% Caucasian, 68.3% married, and 16.9 years ( = 2.88 years) of education. Mean VO measured was 17.07 ( = 4.92) for the total sample (18.29 [ = 4.64] for males, 15.78 [ = 4.91] for females). Sixteen (11.03%) CPETs were submaximal, 53 (36.55%) were near-maximal, and 76 (52.41%) were maximal. Mean VO predicted was 28.59 ( = 21.94) for the total sample (29.36 [ = 22.3] for males, 27.76 [ = 21.68] for females) and was significantly higher than VO measured ( < 0.0001). Among participants with maximal CPETs, VO measured was significantly lower than sedentary normative data ( < 0.0001).
CPET was feasible for older adults with aMCI. VO predicted overly inflates CRF estimates. Low levels of CRF in older adults with aMCI suggest aerobic exercise as an important intervention. [(9), 31-36.].
使用基于实验室的心肺运动测试（CPET）分析社区居住的轻度认知障碍老年人（aMCI）的心肺适应能力（CRF）水平，具体包括 CPET 的可行性、CRF 的预测以及与已发表的久坐不动、认知正常、年龄和性别调整的正常数据相比的 CRF 状态。
通过 CPET 评估峰值耗氧量（VO[mL/kg/min]），CPET 分为亚最大、接近最大或最大测试。将预测的 VO 与测量的 VO 进行比较，以评估其效用。使用 检验进行数据分析。
参与者的平均年龄为 73.77 岁（ = 5.74 岁），其中 51.7%为男性，91.7%为白种人，68.3%已婚，受教育年限为 16.9 年（ = 2.88 年）。总样本的平均 VO 测量值为 17.07（ = 4.92）（男性为 18.29[ = 4.64]，女性为 15.78[ = 4.91]）。16 项 CPET 为亚最大，53 项为接近最大，76 项为最大。总样本的平均 VO 预测值为 28.59（ = 21.94）（男性为 29.36[ = 22.3]，女性为 27.76[ = 21.68]），明显高于 VO 测量值（ < 0.0001）。在进行最大 CPET 的参与者中，VO 测量值明显低于久坐不动的正常数据（ < 0.0001）。
CPET 适用于患有 aMCI 的老年人。预测的 VO 过高估计了 CRF 估计值。患有 aMCI 的老年人 CRF 水平较低表明有氧运动是一种重要的干预措施。[（9），31-36]。
