优秀女子短跑运动员有氧-无氧能力特征及训练效应

目的：通过女子短跑运动员1年训练中有氧-无氧能力的跟踪观察，为训练监控中的综合分析评定提供参考。方法：21名优秀女子短跑(100～400m)运动员和10名中跑(800～1500m)运动员参加预期性研究；分别在Max-1气体代谢分析仪上完成最大有氧能力试验；在Monark834E功率车上完成改进的Wingate无氧试验。根据年训练周期，共进行3次该组合试验并分析其间的关系。结果：在基本能力评定中，短跑组VO2max显著低于中跑组(平均为2．41和2．74L／min，P&;lt;0．05)；最大无氧功(Peak Power，P-peak)和平均无氧功(Average Power,P-ave)显著高于中跑组(分别为744．2和584．2W，P&;lt;0．01；517．7和427．8W，P&;lt;0．01)。在跟踪测试中，短跑组显示前半周期最大输出功率(Maximal Output Power，Wmax)、最大通气量(Maximal Voluntary Ventilation，VEmax)和P-ave显著提高，后半周期VO2max,VEmax和最小无氧功(Low Power，P-low)明显下降，而起始无氧功(Start of Loading，P-sta)和P-peak显著提高。中跑组仅在后半周期VO2max显著提高；VO2max，Wmax和VEmax分别与P-low，P-ave呈正相关(r=0.47～0．70．P&;lt;0．05)。结论：速度耐力是短跑的关键素质，不仅与无氧代谢能力有直接关系，也离不开有氧供能基础．短跑成绩的提高，需重视最大速度和专项耐力的协调发展。对有氧-无氧能力的组合监测，有于助短跑训练安排更加符合生物学原理。     

大强度训练对运动员有氧耐力影响的研究

目的研究大强度训练对划艇运动员有氧耐力的影响.方法进行跑台渐增负荷运动直到力竭为止.同时测定气体代谢最大吸氧量(VO2max)、通气量(VE)、血乳酸(BLa)、心率(HR)血睾酮(T)、皮质醇(Cor)及血红蛋白(Hb).结果训练周期后无氧阈(AT)值与训练前相比较均有显著性差异(P<0.05),但VO2max却未有显著性差异;训练周期后Hb值与训练前相比较均有显著性差异(P<0.05),而T、Cor在训练期前后之间却未有显著性差异.结论周期性大强度的训练保持了稳定的VO2max,AT在有氧耐力训练中具有重要的作用.     

不同专项运动员无氧代谢能力特征

目的分析不同专项运动员的无氧代谢能力特征,以及无氧与有氧能力之间的关系,为无氧代谢能力的评价提供参考。方法采用改进的Wingate无氧试验测定江苏省级短跑(n=24)、中长跑(n=23)、场地自行车(n=11)、赛艇(n=18)运动员的无氧能力(按大功率,平均功量,疲劳度),用直接法测定其有氧能力。结果(1)最大功率(PP/kg)、平均功率(AP/kg),属于短距离项目的场地自行车犤(15.1±1.1)W/kg,(10.4±0.7)W/kg犦和短跑运动员犤(14.9±1.5)W/kg,(10.1±0.8)w/kg犦高于属于长距离项目的赛艇犤(11.8±2.8)W/kg,(9.1±0.5)w/kg犦和中长跑运动员犤(2.9±1.5)W/kg,(9.1±0.5)w/kg犦,除场地自行车与短跑运动员之间和赛艇与中长跑运动员之间无显著性差异外,其他各组间均有显著性差异。疲劳度中长跑(64±9)%/kg>场地自行车(60±5)%/kg大于赛艇(59±5)%/kg>短跑(53±4)%/kg运动员。结论不同专项运动员的无氧代谢能力存在一定的差异;相同的项目不同的距离间,相同的距离不同的项目间均不相同;无氧代谢能力与肌肉量有关;有氧能力和无氧能力之间无此消彼涨的负相关,而是协同增加的。     

大强度训练对运动员有氧耐力影响的研究

目的,研究大强度训练对划艇运动员有氧耐力的影响,方法：进行跑台渐增负荷运动直到力竭为止,同时测定气体代谢最大吸氧量（VO2max),通气量（VE）,血乳酸（BLa),心率（HR）血睾酮（T（,皮质醇（Cor)及血红蛋白（Hb),结果：训练周期后无氧阈（AT）值与训练前相比较均有显性差异（P＜0．05）,但VO2－max却未有显性差异,训练周期后Hb 值与相比较均有显性差异（P＜0．05）,而T,Cor在训练期前后之间却未有显性差异,结论：周期性大强度的训练保持了稳定的VO2max,AT在有氧耐力训练中具有重要的作用。     

人工虫草提取物Cs-4改善人体心肺功能及增强耐力的临床研究

目的:探究人工虫草提取物Cs-4对健康老年志愿者有氧能力的影响。方法:采用随机双旨安慰剂对照研究方法,30例健康老年志愿者被随机分配到Cs-4组(n=16)或者安慰剂组(n=14),服用Cs-4(3g／d)或安慰剂共6周。实验前后,在第0周和第6周,通过测定症状限制性的增量功率运动试验期间的最大氧摄取(VO2max)、最大通气率(VEmax)、代谢当量(METs)和气体交换无氧阈值(VO2θ),以及试验前及试验终止后:3min,从手臂静脉取静脉血测定血乳酸浓度,来评估有氧能力、运动能力以及体能。结果:6周治疗后,安慰剂组的各项指标无明显变化;Cs-4组的VO2max较服药前的基线水平平均提高了7.0％±3.5％(P=0.05),最大METs明显提高了8.29％±3.33％(P<0.05),VEmax明显提高了10.4％±4.5％(P<0.05),无氧阈(VO2θ)较6周前明显提高了12.6％±4.3％(P<0.05);血清乳酸水平无明显变化。结论:人工虫草提取物Cs-4能够增强老年健康人的有氧能力、运动能力和肺通气容量,从而有力地支持了中医关于冬虫夏草具有提高运动能力和抗疲劳作用的理论。     

不同专项运动员无氧代谢能力特征

目的 分析不同专项运动员的无氧代谢能力特征，以及无氧与有氧能力之间的关系，为无氧代谢能力的评价提供参考。方法 采用改进的Wingate无氧试验测定江苏省级短跑(n=24)、中长跑(n=23)、场地自行车(n=11)、赛艇(n=18)运动员的无氧能力(按大功率，平均功量，疲劳度)，用直接法测定其有氯能力。结果 (1)最大功率(PP／kg)、平均功率(AP／kg)，属于短距离项目的场地自行车[(15．1&;#177;1.1)W／kg．(10．4&;#177;O．7)W／kg]和短跑运动员[(14．9&;#177;1．5)W／kg，(10．1&;#177;O．8)W／kg]高于属于长距离项目的赛艇[(11．8&;#177;2．8)W／kg，(9．1&;#177;O．5)W／kg]和中长跑运动员[(2．9&;#177;1.5)W／kg，(9．1&;#177;O．5)W／kg]，除场地自行车与短跑运动员之间和赛艇与中长跑运动员之间无显著性差异外。其他各组问均有显著性差异。疲劳度中长跑(64&;#177;9)％／kg&;gt;场地自行车(60&;#177;5)％／kg大于赛艇(59&;#177;5)％／kg&;gt;短跑(53&;#177;4)％／kg运动员。结论 不同专项运动员的无氧代谢能力存在一定的差异；相同的项目不同的距离间，相同的距离不同的项目问均不相同；无氧代谢能力与肌肉量有关；有氧能力和无氧能力之间无此消彼涨的负相关。而是协同增加的．     

运动训练对低肺功能肺癌患者手术耐受性的影响

目的:探讨术前短期中高强度下肢运动训练对低肺功能肺癌患者肺切除手术耐受性的影响.方法:采用随机单盲设计,将61例可切除肺癌合并重度慢性阻塞性肺病患者,根据美国胸科医师协会肺切除术前评估指南分为可手术A组和不可手术B组;A组再随机分为A1亚组(训练亚组)和A2亚组(对照组).A1亚组和B组术前予每周5次、连续2周、强度达60％-80％峰值氧摄量VO2max的踏车运动训练,辅以胸腹联合缩唇呼吸训练.比较训练前后静态肺功能和运动心肺功能的变化;训练后重新评估B组手术风险;比较训练Al亚组和对照A2组肺切除术后并发症情况.结果:训练后,在A1亚组,心肺功能指标:肺一氧化碳弥散量DLCO(P=0.003)、VO2max(P＜0.001)、无氧阈AT(P=0.008)、氧脉VO2max/HR(P＜0.001)较训练前显著改善;在B组,心肺功能指标:用力肺活量FVC(P＜0.001)、分钟最大通气量MVV (P=0.001)、DL.CO (P＜0.001)、最大功率W(P=0.004)、VO2max (P＜0.001)、AT(P=0.002)、VO2max/HR (P=0.00l)、峰值通气量VEmax(P=0.015)、无氧阈时CO2通气当量VE/VCO2@AT (P=0.003)和运动后经皮血氧饱和度SPO2％(P=0.002)均较训练前显著改善;B组中59％(10/17)患者达手术标准;训练A1亚组较对照A2组,肺切除术后氧疗时间(P=0.04)、机械通气时间(P=0.036)和住院天数(P=0.025)均显著缩短.结论:术前短期中高强度下肢运动训练能有效、可行地提高低肺功能肺癌患者心肺功能适应性,有助于肺切除术后康复.     

不同饮食习惯女大学生运动能力比较

目的:通过对女大学生的素食生活习惯研究,探讨女大学生的饮食内容与运动能力的关系。方法:2002级沈阳工业大学食素1年以上的女大学生36名(素食组)和非食素女大学生40名(非素食组)通过西德Jaeger公司生产的运动心肺功能仪(功率自行车)对运动期间心率、摄氧量、每博摄氧量(VO2/HR)、最大摄氧量(VO2max)、每博最大摄氧量(VO2max/HP)、最大运动负荷(WATTmax)、呼吸商等进行观察统计。结果:在达到无氧阈(呼吸商=1)时,两组间的摄氧量、VO2/HR和WATT差异有显著性(P<0.001),食素组各项指标均明显低于非食素组。在观察两组学生在达到VO2max时,食素学生和非食素学生在VO2max、呼吸商、VO2max/HR和WATTmax差异非常显著(P<0.01),食素女生的呼吸商明显高于非食素女生,而非食素女生的VO2max,VO2max/HR和WATTmax三项指标却明显高于食素女生。结论:在机体承受较强运动负荷的状况下,素食者的心肺功能各项指标低于非食素者,运动能力降低。     

大学生女子足球运动员有氧耐力及其营养摄取的调查

目的:调查大学生女子足球运动员的有氧能力、血液生化指标及营养状况,为提高女子足球运动员的体力提供科学依据。方法:受试者为大学生女子足球运动员11名(实验组),与没有运动习惯的女大学生11名(对照组)进行比较,对照组的生活和学习制度统一按学校要求实施,实验组除训练外,一切与对照组的要求相同。大学生女子足球运动员的训练期为1年。结果:实验组的最大吸氧量犤mL/(kg·min)犦大于对照组(36.7±3.2和30.5±3.4;t=3.26,P<0.05),而体脂肪率(%)小于对照组(19.2±2.3和23.7±3.4;t=4.7,P<0.01);实验组乳酸脱氢酶、肌酸磷酸激酶(μkat)与对照组比较明显增加(乳酸脱氢酶:6.33±0.57和6.16±0.42;肌酸磷酸激酶:3.30±2.17和1.73±2.02);实验组的血红蛋白、血红蛋白比率和血细胞比容均在正常范围内,但较对照组明显减少,差异均有显著性意义(t=4.84,4.23,7.04,P均<0.01)。结论:女子足球运动员的有氧耐力高于没有运动习惯的女大学生;能量的摄取、糖、蛋白质、钙和铁的摄取量明显不足,为了增强有氧能力,女子足球运动员应该增加这些营养物质的摄取量。     

心肺功能运动试验和静态肺功能用于COPD患者应用支气管扩张剂后疗效评定的比较

目的：比较心肺功能运动试验（CPET）和静态肺功能（PFT）评定支气管扩张剂治疗COPD患者疗效的准确性。方法：选择20例初诊的COPD患者,给予为期2周的支气管扩张剂治疗,治疗前后分别给予CPET和PFT检查,记录检查中的一些参数并进行比较。结果：治疗前后PFT参数中第一秒用力呼气容积(FEV1)、FEV1%（占预计值%）无显著差异,深吸气量（IC）有显著差异。治疗后CPET参数最大运动功率(Wmax)、最大摄氧量(VO2max)明显增加,而最大运动负荷时Borg呼吸困难评分有显著下降。△IC与△Wmax、△VO2max呈显著正相关;与△Borg scale评分呈显著负相关。结论：CPET中Wmax、VO2max、Borg Scale呼吸困难评分可以作为支气管扩张剂对COPD患者治疗疗效评定首选的方法。PFT中IC可部分替代CPET中相应参数来进行对COPD患者治疗的评估。     

Comparison of different exercise tests in assessing outcomes of pulmonary rehabilitation

INTRODUCTION: Common modalities of clinical exercise testing for outcome measurement after pulmonary rehabilitation (PR) include walk tests, progressive cycle ergometry, and cycle endurance testing. We hypothesized that patients' responses to PR, as measured by those 3 tests, are differentially correlated, and we designed a study to investigate the tests' capacity to detect changes after PR. METHODS: We prospectively tested 37 male patients with stable chronic obstructive pulmonary disease who completed a comprehensive 6-week PR program that included supervised exercise training that emphasized steady-state lower-limb aerobic exercise. Before and after the PR program the patients underwent 6-minute walk test, progressive cycle ergometry, and cycle endurance testing (at 80% of the peak work rate achieved during progressive cycle ergometry). The exercise performance indices of interest were the peak oxygen uptake (VO2max) and maximum work-rate (Wmax) during progressive cycle ergometry, the cycling endurance time, and the 6-minute walk distance (6MWD). RESULTS: After PR there were statistically significant improvements in 6MWD (16%, p <0.001), VO2max (53%, p=0.004), Wmax (30%, p=0.001), and cycling endurance time (144%, p <0.001). The changes in VO2max and Wmax were significantly correlated (r=0.362, p=0.027), as were the changes in endurance time and Wmax (r=0.406, p=0.013). There was no significant correlation between changes in any other exercise index. CONCLUSIONS: Among the frequently used exercise tests in PR, the most responsive index is the endurance time. The correlation between the post-PR changes in the various exercise indices is poor.     

The effect of interval training combined with thigh cuffs pressure on maximal and submaximal exercise performance

The purpose of the study was to investigate the effect of interval training combined with a thigh cuffs pressure of +90 mmHg on maximal and submaximal cycling performance. Twenty untrained individuals were assigned either to a control (CON) or to an experimental (CUFF) training group. Both groups trained 3 days per week for 6 weeks at the same relative intensity; each training session consisted of 2-min work bout at 90% of VO(2max): 2-min active recovery bout at 50% of VO(2max). An incremental exercise test to exhaustion, a 6-min constant-power test at 80% of VO(2max) (Sub(80)) and a maximal constant-power test to exhaustion (TF(150)) were performed pre- and post-training. Despite the unchanged VO(2max), both groups significantly increased peak power output (CON: ～12%, CUFF: ～20%) that was accompanied by higher deoxygenation (ΔStO(2)) measured with near-infrared muscle spectroscopy. These changes were more pronounced in the CUFF group. Moreover, both groups reduced VO(2) during the Sub(80) test without concomitant changes in ΔStO(2). TF(150) was enhanced in both groups. Thus, an interval exercise training protocol under moderate restricted blood flow conditions does not provide any additive effect on maximal and submaximal cycling performance. However, it seems to induce peripheral muscular adaptations, despite the lower absolute training intensity.     

不同运动方式对老年原发性高血压患者运动能力和认知功能的影响

目的 观察不同运动方式（有氧运动或抗阻训练）对老年原发性高血压患者运动能力和认知功能的影响。 方法 将84例老年原发性高血压患者按随机数字表法分为有氧运动组、抗阻训练组和安静对照组,每组28例,有氧运动组进行有氧运动,抗阻训练组进行抗阻训练,安静对照组保持日常生活习惯不变,实验周期为12周。治疗前后利用递增负荷跑台运动实验测定有氧运动能力［最大摄氧量（VO2max）、力竭时间和力竭距离］,利用等动肌力测试仪［股四头肌最大随意收缩（MVC）］和30s温盖特（Wingate）实验测定无氧运动能力,利用软件测试受试者基本认知能力（知觉速度、心算效率、空间表象、工作记忆、记忆再认和总成绩共6项得分）。 结果 治疗后,有氧运动组VO2max、力竭时间和力竭距离增加（P<0.05）;抗阻训练组股四头肌MVC及30s温盖特实验中最高功率、平均功率和疲劳指数升高（P<0.05）;有氧运动和抗阻训练组收缩压和舒张压水平均下降（P<0.05）,认知能力中的知觉速度、工作记忆和总成绩显著提高（P<0.05）,但组间比较差异无统计学意义（P>0.05）;安静对照组各项指标均无显著性变化（P>0.05）。 结论 虽然有氧运动和抗阻训练对运动能力的影响存在显著差异,但两者均可有效降低老年高血压患者血压水平并改善认知功能。     

不同强度有氧训练对轻中度慢性阻塞性肺疾病的作用

目的:比较不同强度有氧训练对轻中度稳定期慢性阻塞性肺疾病(COPD)患者肺的通气功能和运动耐力的影响。方法:将60例轻中度稳定期COPD患者随机分为高强度(峰值功率的70%)有氧训练组20例、低强度(峰值功率的50%)有氧训练组20例、对照组20例,所有患者训练前后均进行心肺运动试验(CPET)评估,高强度与低强度有氧训练组均进行8周训练,每周3次,高强度训练组每次训练4组,每组以5min训练、5min休息的间歇训练模式进行,共40min。低强度训练组每次持续训练20min。结果:训练前3组间的测试持续时间、峰值功率、峰值通气量、峰值摄氧量及无氧阈均无差异(P>0.05)。训练后各指标差值(训练后-训练前)比较,3组间测试持续时间、峰值功率、峰值摄氧量的差值(训练后—训练前)两两比较均有差异(P<0.05),高强度组明显增加;对照组与低强度组间的峰值通气量(VE)差异无显著性意义(P>0.05),但均与高强度组有差异(P<0.05);无氧阈值(AT)仅高强度组比对照组明显增高(P<0.05)。结论:与低强度持续有氧训练相比,高强度间歇有氧训练可以明显提高轻中度稳定期COPD患者肺的通气功能及运动耐力。     

高强度间歇性耐力训练对大学生心肺功能的影响

目的：研究高强度间歇性耐力训练对大学生心肺功能的影响。方法：58名健康大学生分为男生组31人、女生组27人,2组进行9个阶段为期9周的渐进性增强高强度间歇性耐力训练,所有受试者训练前后均进行心肺运动试验（CPET）,主要监测指标包括安静心率、安静血压、峰值摄氧量（VO2peak）、通气阈值（VT）及力竭时值（TTE）。结果：经过9个阶段的高强度间歇性耐力训练,2组安静心率均较训练前下降（P〈0.01）,但安静血压训练前后差异无统计学意义;2组VO2peak及TTE均较训练前提高（P〈0.05）;VT总体及男生组训练前后差异无统计学意义,但女生组较训练前明显提高（P〈0.05）。结论：高强度间歇性耐力训练可改善大学生心肺功能。     

Assessment of exercise capacity in women with type 2 diabetes

The primary aim of this study was to compare the maximal oxygen uptake as evaluated from a submaximal exercise test (EVO2peak) to direct measurements of VO2peak during a maximal exercise test as means of monitoring the aerobic endurance capacity in women with type 2 diabetes (T2D). Twenty-seven women with T2D participated in the study. The program consisted of combined group training 1 h twice a week during 12 weeks and walks 1 h per week. EVO2 max was estimated using a submaximal exercise test on a bicycle ergometer ad modum Astrand. VO2peak and maximal work rate were measured using an incremental maximal exercise test on an electrically braked bicycle ergometer at baseline and after 6 and 12 weeks. EVO2peak was higher than VO2peak at baseline and significantly higher at 12 weeks (EVO2peak1.92+/-0.54 l min(-1), VO2peak 1.41+/-0.36, P<0.005). Maximal work rate increased significantly after 12 weeks (12+/-15, P<0.005) compared to baseline. The main finding of this study was that EVO2peak assessed using a submaximal exercise test, systematically overestimated VO2peak. The combined group training increased maximal work rate but not VO2peak. This is likely to reflect peripheral adaptation to exercise and/or improved mechanical efficiency.     

Enhancement of isokinetic muscle strength with a combined training programme in chronic heart failure

BACKGROUND: Patients with congestive heart failure (CHF) exhibit an impaired exercised tolerance that dramatically limits their functional capacity and alters their quality of life. DESIGN: The aim of this study was to compare the effects of two types of training programmes on isokinetic muscle strength and aerobic capacities in patients with CHF. METHODS: A group of 23 stable CHF patients included consecutively followed an exercise training programme, 3 days a week for 8 weeks. The first group (P1, n=11) exercised on a cycloergometer for 45 min at 65% of peak VO2. The second group (P2, n=12) followed a 45-min combined bicycle and quadricipital strength training. Strength training consisted of 10 series of 10 repetitions at 70% of maximal voluntary force. Incremental maximal cardiopulmonary exercise tests as well as an isokinetic quadricipital dynamometry evaluation were performed before and after training. RESULTS AND CONCLUSIONS: In P1, peak VO2 increased by 20% (22.3+/-4.9 versus 17.8+/-4.5 ml min(-1) kg(-1); P<0.05) without any significant change in isokinetic muscle strength. In P2, peak VO2 improved within the same range (20.5+/-2.8 versus 18.6+/-3.7 ml min(-1) kg(-1); P<0.01). This last rehabilitation programme significantly increased isokinetic muscle strength at each angular velocities (+10.5+/-13.5%, P<0.04; +5.6+/-7.0%, P<0.03; for 180 degrees s(-1) and 60 degrees s(-1) respectively). Only the combined endurance/strength training programme was associated with an improvement in both peak VO2 and peripheral muscle strength, two significant parameters of outcome and quality of life in CHF.     

Effect of the VO2 time-averaging interval on the reproducibility of VO2max in healthy athletic subjects

AIMS: Limited research has investigated the most appropriate oxygen uptake (VO2) data averaging method to obtain reliable and valid maximal oxygen uptake (VO2max) values. This study investigated the effect of the VO2 time-averaging interval on the reproducibility of VO2max. METHODS AND RESULTS: Twenty-two competitive distance runners (six female) performed two identical incremental treadmill tests to their limit of exercise tolerance separated by at least 48 h. Commencing at 7 km h(-1), running speed was increased by 1 km h(-1) per minute for five stages and 0.5 km h(-1) thereafter. Breath-by-breath VO2 data collected during each incremental test were time-averaged over 10-, 15-, 20-, 30- and 60-s and the highest averaged VO2 value was regarded as VO2max for each time-averaging interval. The VO2max values derived from different VO2 time-averaging intervals were significantly different for the first (F = 39.6; P<0.001) and second (F = 68.9; P<0.001) incremental test. There was a tendency for VO2max to significantly increase as the time-averaging interval became shorter. The reproducibility of VO2max was similar for all five VO2 time-averages, with no significant differences between the within-subject variance (F = 0.4; P = 0.6). CONCLUSION: The results of this study suggests that the reproducibility of VO2max is not affected by the length of the VO2 time-average interval. However, VO2max was significantly altered by changing the VO2 time-averaging interval between 10 and 60 s. Consistency in the VO2 time-averaging interval is therefore an important methodological consideration for repeated determinations of VO2max.     

The isokinetic assessment of peripheral muscle function in patients with coronary artery disease: correlations with cardiorespiratory capacity.

OBJECTIVE: We aimed to determine whether diminished cardiorespiratory capacity in patients with coronary artery disease (CAD) is accompanied by impaired skeletal muscle function as measured by isokinetic dynamometry. We also evaluated the correlation between isokinetic strength and aerobic capacity in these patients. MATERIALS AND METHODS: Fifteen CAD patients and 15 age-matched healthy subjects (mean age 60+/-6 vs. 57+/-3.5 years) underwent maximal laboratory exercise testing, a 6-min walking test and an assessment of peripheral skeletal muscle function by use of an isokinetic apparatus. Quadricep and hamstring function was tested at two angular velocities, 150 and 180 degrees s(-1) with simultaneous electrocardiography monitoring. The cardiorespiratory and mechanical parameters (VO(2), ventilatory threshold [VT], heart rate [HR], and power) were measured at VT and at maximal effort. RESULTS: Quadricep and hamstring peak torque was impaired in CAD patients, with quadriceps peak torque at 180 degrees being 71.13 +/- 14 vs. 91.13 +/- 23 Nm (P<0.01) and hamstring peak torque 46.50+/-10 vs. 59.86+/-12 Nm (P<0.01). CAD subjects presented a deficient aerobic capacity as compared with the healthy subjects at maximal effort. At VT, the VO(2), ventilation, and HR were significantly lower in CAD patients, at 13.77+/-2.33 vs. 17.08+/-3.59 ml min(-1) kg(-1) (P<0.05), 29.64 +/- 664 vs. 37.76 +/- 7.2 ml min(-1) (P<0.05), and 86+/-14 vs. 111+/-15 beats min(-1) (P=0.001), respectively. The 6-min walking distance was significantly shorter for CAD patients than healthy subjects (425.93+/-52.77 vs. 551.46 +/- 57.94 m; P<0.01). In CAD patients quadriceps and hamstring strength was not correlated with VO(2) at maximal effort and at VT. Total distance walked during the 6-min walk and VO(2)max were correlated (r=0.869; P<0.001) but not at VT. CONCLUSION: CAD patients showed impaired cardiorespiratory capacity accompanied by increased muscle fatigability as compared with healthy subjects. An isokinetic muscle assessment in these patients must be achieved systematically and seems to have value in cardiovascular rehabilitation.