ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

BackgroundUsing information collected prospectively from a multicenter cardiac rehabilitation database, this study was designed to evaluate baseline exercise tolerance and subsequent change in functional capacity among consecutive patients enrolled in supervised cardiac rehabilitation stratified according to age and gender. In addition, the study evaluated change in functional capacity among those with the lowest initial exercise tolerance (<5 METS) and assessed patient factors that correlate to the highest relative improvements in functional capacity after training.MethodsA total of 778 patients performed an initial exercise test upon entry into cardiac rehabilitation, during which peak heart rate, blood pressure, and estimated peak MET levels were derived, and ischemic responses were evaluated. After 10 ± 2 weeks of supervised prescribed exercise, 500 patients who completed the program performed follow-up exercise testing.ResultsThe subjects included 558 men (72%) and 220 women (28%) of whom 492 (63%) were <65 years, 241 (31%) were 65 to 75 years, and 45 (6%) were >75 years. At baseline, the peak initial MET level for men was 8.6 ± 3.4 METS and for women was 6.0 ± 2.6 METs. The peak initial MET level declined with age: age <65 = 8.9 ± 3.4 METS; age 65 to 75 = 6.6 ± 2.6 METS; and age >75 = 5.7 ± 2.9 METS. When stratified according to age and gender, the baseline exercise tolerance for men significantly (P <.0001) declined with age and was higher than that of women <65 and 65 to 75 years of age. After training, the relative improvement in exercise tolerance for each age and/or gender subgroup was: age <65: men 36%, women 41%; age 65 to 75: men 36%, women 50%; and age >75: men 36%, women 32%. Among 163 patients with an initial peak MET level <5, exercise tolerance rose from 4.1 ± 0.7 to 8.3 ± 3.5 METS (P <.0001). Multivariate analysis demonstrated that the greatest change in exercise tolerance with training was associated with those compliant patients with initial peak METS <5. No significant net change in the occurrence of exercise-induced ischemia was observed.ConclusionsAmong consecutive patients enrolled in cardiac rehabilitation, baseline exercise tolerance differs relative to age and gender, with male gender and younger age demonstrating the highest functional capacity. Exercise training yielded significant improvements in exercise tolerance among men and women of every age group including those older than 75 years, and particularly among those with an initial peak MET level <5. Thus, referral to cardiac rehabilitation programs should be advocated for both men and women, and should not be limited by age.

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

BackgroundAlthough there have been many studies showing that exercise training is beneficial for patients with peripheral vascular occlusive disease (PVOD), there is little research comparing various modes of training. Previous studies showed that exercise tests performed on a StairMaster (StairMaster Sports/Medical Products, Kirkland, WA) produce responses similar to those elicited by treadmill tests. The purpose of this study was to compare these modes of exercise in a training program for patients with PVOD.MethodsOf the 23 eligible individuals who began the exercise program, 11 did not complete the regimen due to various complications. Thus, 12 patients were randomly assigned to train for 12 weeks on either a StairMaster (n = 6) or a treadmill (n = 6). Patients underwent progressive and single-stage exercise tests on both exercise modalities before and after training.ResultsMean exercise time before the onset of claudication pain for all tests rose significantly after training (P <.01), but greater improvements were seen on the specific training apparatus (i.e., treadmill training resulted in improvement in treadmill exercise performance with less improvement noted when tested on the StairMaster, and vice versa). Exercise time to maximal pain increased for the training apparatus only (P <.01). There were no changes in foot transcutaneous oxygen tension or the ankle-brachial blood pressure index.ConclusionsBoth StairMaster and treadmill training improve the exercise capacity of PVOD patients. The training effect is most apparent for the specific training apparatus, but there is some cross-over improvement to the other exercise modality. Thus, StairMaster training is appropriate and can be part of the exercise prescription for treatment of these patients.

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

PurposeThe purpose of this study was to examine the effects of a total body strength training program on oxygen uptake (˙VO2), heart rate (HR), systolic blood pressure (SBP), and rate pressure product (RPP) during a submaximal walk and a weight-loaded walking test in healthy women 60-77 years old.MethodsThe submaximal walk (2 mph and 3.5% grade) took place during stage 3 of a graded exercise test. The weight-loaded walking task consisted of treadmill walking at 2 mph while carrying a box weighing 40% of maximum isometric elbow flexion strength. The women strength trained three times per week for approximately 1 hour per session for 16 weeks.ResultsPaired t tests determined that strength increased by 57% on six isotonic strength tests (one repetition maximum) and by 29% on two isometric strength tests. A repeated measures analysis of variance (ANOVA) was used to determine the pre- to post-differences between and within the two tests (α = 0.05). There was no change in ˙VO2but HR, SBP, and RPP decreased significantly during the submaximal walk and the weight-loaded walking test. However, average HR (135 to 120 bpm) and RPP (23.3 × 103to 19.3 × 103) decreased more during the weight-loaded walking test than during the submaximal walk (HR: 108 to 104 bpm; RPP 18.3 × 103to 17.0 × 103).ConclusionsIn conclusion, the reduced HR, SBP, and RPP indicates that strength training may reduce cardiovascular stress during daily tasks in healthy older women.

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

摘要:

PurposeThis study assessed the effect of a wheeled walking aid on disability, oxygenation, and breathlessness in patients with severe disability secondary to chronic irreversible airflow limitation.MethodsEleven subjects with chronic irreversible airflow limitation, mean forced expired volume in 1 second (FEV1) 0.71 L ±.33 L, were studied. Subjects performed four 6-minute walk tests, two on each of two study days, twice unaided and twice with the assistance of a wheeled walking aid. A randomized cross-over design was used. All subjects were oriented to 6-minute walk tests, use of bronchodilators was controlled, and standard encouragement was given during each walk test. Outcome measures were the distance walked in 6 minutes, change in oxyhemoglobin saturation during the walk, and breathlessness using a modified Borg Scale.ResultsThe use of a wheeled walker resulted in a significant increase in 6-minute walking distance, a significant reduction in hypoxemia with walking and a significant reduction in breathlessness during the walk test.ConclusionsThe use of a wheeled walker resulted in significant decreases in disability, hypoxemia, and breathlessness during a 6-minute walk test. By reducing disability and breathlessness, a wheeled walker may improve quality of life in individuals with severe impairment in lung function.

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID

ISSN:0883-9212    

出版商:OVID    

年代:1996

数据来源: OVID