Zwierska I, Walker R D, Choksy S A, Male J S, Pockley A G, Saxton J M
The Centre for Sport and Exercise Science, Sheffield Hallam University, Collegiate Crescent Campus, Sheffield S10 2BP, UK.
Eur J Vasc Endovasc Surg. 2006 Feb;31(2):157-63. doi: 10.1016/j.ejvs.2005.06.025. Epub 2005 Aug 10.
To investigate the effects of peripheral arterial disease (PAD) on relative tolerance to upper- and lower-limb aerobic exercise.
Peak cardiorespiratory responses evoked by an incremental arm-cranking test (ACT) and an incremental leg-cranking test (LCT) were compared in patients with PAD (N=101; median age 69 year, range 50-85 years). Claudication distance (CD) and total distance before intolerable claudication pain (maximum walking distance: MWD) were also assessed during walking.
Peak oxygen consumption (V O(2)) for the ACT was 94% of that measured for the LCT (1.01+/-0.03 versus 1.10+/-0.03lmin(-1), respectively; P<0.001), but in a significant proportion of patients (35%; P<0.001), exceeded that recorded for the LCT. The ratio of upper- to lower-limb peak V O(2) was higher (0.98+/-0.04 compared to 0.98+/-0.05lmin(-1) and 1.00+/-0.06 compared to 1.21+/-0.06lmin(-1); P<0.01), whereas walking performance (CD: 94+/-14 versus 187+/-25 m, P<0.01; MWD: 227+/-20 versus 394+/-33 m, P<0.01) was lower for patients in the lowest ankle to brachial pressure index quartile compared to patients in the highest quartile, respectively.
Upper-limb aerobic conditioning could be a useful exercise stimulus for maintaining or improving cardiorespiratory function in patients with severe PAD as they have a greater relative upper-limb aerobic power.
研究外周动脉疾病(PAD)对上下肢有氧运动相对耐受性的影响。
比较了PAD患者(N = 101;中位年龄69岁,范围50 - 85岁)在递增式手臂曲柄试验(ACT)和递增式腿部曲柄试验(LCT)中诱发的心肺峰值反应。还在步行过程中评估了跛行距离(CD)和出现无法忍受的跛行疼痛前的总距离(最大步行距离:MWD)。
ACT的峰值耗氧量(V O₂)为LCT测量值的94%(分别为1.01±0.03与1.10±0.03 lmin⁻¹;P < 0.001),但在相当比例的患者中(35%;P < 0.001),ACT的峰值耗氧量超过了LCT记录的值。上下肢峰值V O₂的比值更高(分别为0.98±0.04与0.98±0.05 lmin⁻¹以及1.00±0.06与1.21±0.06 lmin⁻¹;P < 0.01),而与最高四分位数的患者相比,最低踝臂压力指数四分位数的患者步行表现(CD:94±14与187±25 m,P < 0.01;MWD:227±20与394±33 m,P < 0.01)更低。
对于重度PAD患者,上肢有氧训练可能是维持或改善心肺功能的有效运动刺激,因为他们具有相对较高的上肢有氧能力。