Gayda Mathieu, Temfemo Abdou, Choquet Dominique, Ahmaïdi Saïd
Laboratiore de Recherche EA: 3300 APS et Condiutes Motrices: Adaptations et Réadaptations, Faculté des Sciences du Sport, Université de Picardie Jules Verne, Amiens, France.
Arch Phys Med Rehabil. 2004 Sep;85(9):1538-43. doi: 10.1016/j.apmr.2003.11.037.
To measure the cardiorespiratory requirements of the six-minute walk test (6MWT), to compare this demand with the symptom-limited exercise test (SLET) at ventilatory threshold and at maximal level in elderly patients with coronary artery disease (CAD), and to assess the reproducibility of the 6MWT in cardiorespiratory exchanges in those patients.
Comparative and reproducibility sample.
Cardiac rehabilitation service.
Twenty-five people with CAD.
Subjects performed an SLET and a 6MWT. To test 6MWT reproducibility, 9 patients performed 2 repeated 6MWTs.
The 6MWT cardiorespiratory values, measured with a portable gas analyzer, were compared with the SLET data and with the data from the 2 repeated 6MWTs.
The 6MWT peak oxygen uptake (VO2peak, 14.27+/-2.94 mL.min(-1).kg(-1)) and heart rate (94+/-14 beats/min) did not differ from the SLET values at ventilatory threshold (VO2, 13.4+/-2.65 mL.min(-1).kg(-1); heart rate, 91+/-17 beats/min), whereas the 6MWT ventilation (VEpeak, 36.72+/-10.03 L/min) was higher than the SLET at ventilatory threshold (Ve, 31.54+/-8.93 L/min, P<.03). Maximal 6MWT cardiorespiratory data were lower than the SLET maximal values. Cardiorespiratory values did not differ between the 2 repeated 6MWT (VO2peak, 15.33+/-3.52 mL.min(-1).kg(-1) vs 15.11+/-2.65 mL.min(-1).kg(-1); VEpeak, 39.07+/-12.33 L/min vs 39.07+/-12.13 L/min; heart rate, 95+/-21 beats/min vs 89+/-15 beats/min).
The 6MWT cardiorespiratory requirement values did not differ from SLET values at ventilatory threshold except for ventilation, and 6MWT values are reproducible in elderly patients with CAD.
测量6分钟步行试验（6MWT）的心肺需求，将该需求与冠状动脉疾病（CAD）老年患者通气阈值和最大运动水平时的症状限制性运动试验（SLET）进行比较，并评估6MWT在这些患者心肺交换方面的可重复性。
比较性和可重复性样本。
心脏康复服务机构。
25名CAD患者。
受试者进行SLET和6MWT。为测试6MWT的可重复性，9名患者进行了2次重复的6MWT。
使用便携式气体分析仪测量的6MWT心肺值与SLET数据以及2次重复6MWT的数据进行比较。
6MWT的峰值摄氧量（VO2peak，14.27±2.94 mL·min⁻¹·kg⁻¹）和心率（94±14次/分钟）与通气阈值时的SLET值无差异（VO2，13.4±2.65 mL·min⁻¹·kg⁻¹；心率，91±17次/分钟），而6MWT的通气量（VEpeak，36.72±10.03 L/分钟）高于通气阈值时的SLET值（Ve，31.54±8.93 L/分钟，P<0.03）。6MWT的最大心肺数据低于SLET的最大值。2次重复6MWT之间的心肺值无差异（VO2peak，15.33±3.52 mL·min⁻¹·kg⁻¹对15.11±2.65 mL·min⁻¹·kg⁻¹；VEpeak，39.07±12.33 L/分钟对39.07±12.13 L/分钟；心率，95±21次/分钟对89±15次/分钟）。
除通气量外，6MWT的心肺需求值与通气阈值时的SLET值无差异，且6MWT值在CAD老年患者中具有可重复性。
