ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

The widespread popularity of walking, in exercise programs aimed at weight reduction and cardiovascular fitness, has led to considerable interest in the oxygen requirement of this activity. Formulas exist for calculating oxygen uptake (VO2) at walking speeds of 50–100 m/min (1.9–3.7 mph), but there are little data for speeds between 100 and 130 m/min (3.7–4.9 mph) that could be used to derive a prediction equation. The purpose of this study was to measure VO2far walking at these speeds and to develop an equation for use by healthy individuals and those with coronary artery disease (CAD). Seven healthy men, eight healthy women, and eight men with CAD who were active in a community exercise rehabilitation program served as subjects for this study, Each subject was tested at five or six walking speeds (range, 80–130 m/min [3.0–4.9 mph]) in 10-m/min (0.4 mph) increments. No more than three tests were performed in one day. The duration of each test was eight minutes. During minutes 6 to 8 an expired gas sample was collected to calculate VO2Regression analysis showed that a quadratic equation was the best description of the data set. Oxygen uptake during level walking at speeds of 80–180 m/min (3.0–4,9 mph) can be predicted by the equation Y =21.11 - 0.3593 S + 0.0030 S2, where Y = VO2in mL/kg/min and S=speed in m/min (R2= .897; standard error = 1,5).

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

As an aid to the evaluation of the effect of disease on cardiac output (Q) at exercise, toe have devised the calculation “cardiac output reserve” = QR = Q (observed) - (oxygen uptake [observed]JO,19). This is the difference between Q (observed) and the Q necessary to maintain a value of arteriovenous O2difference of 0.19 (L/L). Based on review of jive studies in the literature and our own study of 35 men, the lower limit of normal QR was found to be 2.0 L/min for men up to oxygen uptake (VO2) values of 2.0 L/min. For women, the applicable range of VO2differed depending on the series used. In one study cited in the literature, Q values were higher in relation to VO2for 11 women than for men, and the range of VO2values extended from 0.7 to 3.0 L/min. We found that of three levels of exercise used in a study of 17 women (0,250,500 kg-m/min), the two lower levels were useful in all healthy women (QR ±2,0), but 500 kg-m/min of treadmill exercise was difficult or impossible to attain for some women. Therefore, demonstration of reduced Q during exercise in women generally requires abnormality of QR at a VO2of ±1 L/min unless the subject is unusually tall, Our own studies, (equilibrium CO2rebreathing method), involving 17 men with coronary artery disease, were similar to earlier studies of cardiac subjects in showing that QR became reduced (QR < 2.0) in many subjects at VO2values less than 2.0 L/min, a finding that suggests that Q is abnormally reduced during daily activity in some subjects with coronary artery disease. The study also suggests that these subjects can be identified by a noninvasive exercise test that does not require achievement of maximum VO2.

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

A patient, disabled for one year by chest pain with arteriographically normal coronary arteries, was treated using the clinical methods of operant conditioning. A behavioral analysis identified the functional relationship between the pain/illness behaviors and the social consequences that maintained them. Following six weeks of inpatient rehabilitation, the patient returned to work and remained free from disability. This approach is described as a useful adjunct to cardiac rehabilitation.

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

The Profile of Mood States (POMS) test has been given to 317 patients who had suffered a myocardial infarction, when they were first recruited to a cardiac rehabilitation program and then one year subsequently. Initial scores demonstrated an increase in tension/anxiety and confusion with a loss of vigor, relative to a sample of 157 healthy university students. The year of rehabilitation was marked by highly significant decreases in tension/anxiety, depression /dejection, anger/hostility, and confusion, with an increase of vigor. Neither the decrease in depression nor the increase in vigor could he correlated with performance changes (increase of walking distance and predicted maximal oxygen intake). However, there was a nonsignificant suggestion of greater exercise compliance and greater relief of anginal symptoms in those showing a lessening of depression. We conclude (I) the POMS test provides a simple demonstration of abnormal mood state that is almost as sensitive as the Minnesota Multiphasic Personality inventory, (2) the features emphasized are those of an anxiety state rather than depression (possibly because of a denial of responses weighing on the depression scale), (3) ihe POMS test also demonstrates a highly significant improvement in mood truer 12 months of rehabilitation, and (4) a longer period of observation would he needed to establish a correlation between this response and the physiologic gains.

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Corroboration of the responses of 41 cardiac inpatients to a risk factor inventory was obtained by a simultaneous, independent administration to spouses or close relatives. Strong concordance between patient and corroborative reports was found on measures of age, height, weight, and medication compliance as well as multiple measures of both smoking and beverage consumption. Items showing less concordance included dietary status and compliance smoking cessation history, caffeine consumption, exercise, and levels of worry and tension. The greater discordance for the latter items did not appear to be due to intentional misrepresentation. Factors believed to influence the accuracy of patient self-report were discussed.

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID

ISSN:0275-1429    

出版商:OVID    

年代:1985

数据来源: OVID