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Biomedical subjects

J Lambert

Publications and source records attributed to J Lambert.

At least 271 records · Page 15Linked to original sources
PubMed1982

Influence of cultural and environmental factors on breast-feeding.

A study was undertaken at hôpital Sainte-Justine, Montreal, to determine the factors that influence the choice of feeding method for infants and the duration of breast-feeding. The factors that most clearly distinguished the mothers who breast-fed were lifestyle, education and conditioning to the parental role; those who nursed successfully for a long time were well motivated, well educated, supported by their family, especially the husband, and the La Leche League, and were of an economic status such that it was not necessary for them to return to work soon after delivery. Although the breast-fed babies were more fussy, they were healthier and received fewer drugs.

Bottle Feeding↗
PubMed1982

Drug addiction among Quebec physicians.

Data collected by the Quebec Board of Physicians show that during the 5 years from 1974 to 1978 the prevalence of addiction to opiates among Quebec physicians was 2.8/1000. The physician addicts had greater mobility and a higher attrition rate than their peers. The typical addict was male, a general practitioner and married. He often suffered from pain, fatigue, overwork, and financial and marital difficulties. His addiction had begun at approximately 35 years of age and had become evident about 3 1/2 years later. Meperidine was the preferred opiate. Some of the physicians lost their licences to practise for variable periods of time; for these the prognosis was gloomy. Depression was the main psychiatric disorder diagnosed.

Age Factors↗
PubMed1982

A maximal multistage 20-m shuttle run test to predict VO2 max.

In order to validate a maximal multistage 20-m shuttle run test for the prediction of VO2 max, 91 adults (32 females and 59 males, aged 27.3 +/- 9.2 and 24.8 +/- 5.5 year respectively and with mean VO2 max (+/- SD) of 39.3 +/- 8.3 and 51.6 +/- 7.8 ml . kg-1 . min-1 respectively) performed the test and had VO2 max estimated by the retroextrapolation method (extrapolation to time zero of recovery of the exponential least squares regression of the first four 20-s recovery VO2 values). Starting at 8 km . h-1 and increasing by 0.5 km . h-1 every 2 min, the 20-m shuttle run test enabled prediction of the VO2 max (y, ml . kg-1 . min-1) from the maximal speed (x, km . h-1) by means of the following regression equation: y = 5.857x - 19.458; r = 0.84 and SEE = 5.4. Later, the multistage protocol was slightly modified to its final version, in which the test started at stage 7 Met and continued with a 1 Met (3.5 ml O2 . kg-1 . min-1) increment every 2 min. Twenty-five of the 91 subjects performed the 20-m shuttle test twice, once on a hard, low-friction surface (vinyl-asbestos tiles) and another time on a rubber floor, as well as a walking maximal multistage test on an inclined treadmill. There was no difference between the means of these tests or between the slopes of the VO2max - maximal speed regressions for the two types of surfaces. The 20-m shuttle run test and another maximal multistage field test involving continuous track running gave comparable results (r = 0.92, SEE = 2.6 ml O2 . kg-1 . min-1, n = 70). Finally, test and retest of the 20-m shuttle run test also yielded comparable results (r = 0.975, SEE = 2.0 ml O2 . kg-1 . min-1, n = 50). It is concluded that the 20-m shuttle run test is valid and reliable test for the prediction of the VO2 max of male and female adults, individually or in groups, on most gymnasium surfaces.

Adult↗
PubMed1982

[Climatologic parameters and risk of acute vascular, neurologic and cardiac incidents].

In order to discover a possible correlation between climatic parameters and the occurrence of acute neurological vascular accidents (thrombosis, hemorrhages) and of cardiac accidents (myocardial infarction), the data of a meteorological card-index including climatological parameters [atmospheric pressure in millibars, temperature of the air under shelter in degrees Celsius, relative humidity, speed and direction of the winds, hydrometeors and electrometeors) as well as parameters of solar and ionospheric activity (daily flare index (DFI), index of the geomagnetic activity (AA), daily planetary index (AP), phases of the moon] were compared. The study concerned a period of 731 days and the parameters, subdivided into classes and gradients, were compared with the admission to hospital of 535 patients with myocardial infarction and of 378 patients with stroke. The statistical study consisted in searching for correlations between the parameters considered two by two and in applying the method of the factorial analysis of correspondence for a more extensive analysis. The frequency of the vascular accidents increased when the temperature of the air was less than 12 degrees, when there was hoar-frost with fog, rain or snow and when the DFI was less than 530. The factorial analysis of correspondence enabled to consider 3 fields in which correlations were suggestive for 3 distinct affections: myocardial infarction, cerebral hemorrhages and cerebral thrombo-embolisms.

Cerebrovascular Disorders↗
PubMed1980

Maya medicinal plants of San Jose Succotz, Belize.

The traditional use of plants for medicine was studied in the Maya village of San José Succotz, Belize. Sixty-four species were collected and 106 remedies are described. The ethnobotany of Succotz is discussed in relation to traditional concepts of medicine, ritual and magic in treatment of illnesses, and biochemically active constituents of the plants. Use of plants in Belize and the Yucatan is compared.

Belize↗
PubMed1980

Exercise capacity, residual abnormalities and activity habits following total correction for tetralogy of Fallot.

The maximal oxygen consumption (VO2 max) of 68 patients, at a mean of 5.6 years after total correction for tetralogy of Fallot, was lower than that of normal subjects (36.3 +/- 7.5 and 43.1 +/- 9.0 ml/kg-min). At the time of treadmill evaluation only the female patients were less active in daily life than the normals. Patients having had an elevated right ventricle to pulmonary artery resting systolic pressure gradient, evaluated at a mean of 2.2 years after surgery, had lower VO2 max than those with lesser residual gradients (34.7 +/- 7.2 and 38 +/- 7.3 ml/kg-min). No significant differences in VO2 max were found between patients with none or slight versus moderate to severe pulmonary regurgitation as well as between patients with and without a residual left-to-right ventricular shunt.

Activities of Daily Living↗
PubMed1980

Bottle-feeding legislation in Papua New Guinea.

Research in Papua New Guinea and elsewhere in the developing world has indicted the dangers of bottle feeding infants. Following a failure to obtain the voluntary agreement of shopkeepers to restrict sales of infant-feeding bottles and teats, legislation was passed which placed these items on prescription. In order to obtain a prescription certain conditions have to be satisfied. A follow-up survey which was carried out in Port Moresby two years after the introduction of legislation indicated a significant decline in the extent of bottle feeding.

Advertising↗
PubMed1980

Papua New Guinea's national food and nutrition policy.

Over the past four years a public awareness campaign has succeeded in focusing national attention on nutritional problems in Papua New Guinea, particularly as they affect children. All development plans and new government expenditure is now reviewed by the National Planning Office to ascertain its possible impact on nutrition.

Agriculture↗
PubMed1979

Primary and secondary prevention of alcoholism: emerging trends and research strategy.

1. The theoretical and empirical value of a "level conceptualization in prevention" as proposed by the classical 'public health' model is challenged. 2. Although prevention should be related only to reduction of incidence of the disease (new cases), for various reasons the authors also include secondary prevention in the prevention of alcoholism. 3. Two main strategies are proposed in the prevention of alcoholism: (a) the global prevention directed to the population at large, and (b) the oriented or selective prevention directed to specific target groups (high risk groups). 4. In primary prevention a theoretical model, based on system theory "the ecogenetic wheel model" is proposed which tries to integrate the multidimensional (dependent variables), multifactorial and family approaches (independent variables) involved in alcoholic-related problems. 5. The biological predictors (chromosomal and biochemical markers) and psychological predictors to be used in the early detection of alcoholism are discussed. 6. Two theories are suggested for detection of biochemical markers: direct detection in naive subjects and indirect detection (activating theory) in subjects exposed to ethanol. 7. Secondary prevention could presently benefit from a "constellation" of clearly identified biological markers which would allow for the early detection of initial alcoholics. Screening programs could be implemented for selected target groups such as (a) occupational alcoholism programs, (b) programs for alcoholics' families, (c) programs for specific hospitalized patients and (d) alcohol programs related to traffic accidents.

Alcoholism↗
PubMed1979

Genetic epidemiology and the prevention of functional mental disorders and alcoholism: family study and biological predictors.

1. This review intends to present some theoretical and practical considerations which appear essential for the development of rational research strategies in the field of primary and secondary prevention of mental disorders and alcoholism. 2. The various advances and trends regarding the nosology and diagnosis of these disorders are discussed. Integrative epidemiological models for relating the multifactorial causation and the heterogeneity (multidimensionality) of these disorders are presented. 3. It is emphasized that alcoholism and the functional mental disorders occur in families as shown by (i) the increased incidence of these disorders among relatives and (ii) the existence of various clinical categories genetically associated. 4. Current methodology in clinical diagnosis and genetic epidemiology represent powerful procedures for typing and subtyping of these disorders. Family studies could identify more homogeneous subgroups and generate hypotheses as to the mode of transmission of mental disorders and alcoholism. 5. Real progress could be made in prevention only if the search for predictors is carried out in homogeneous subgroups. 6. There is a lack of knowledge regarding biological predictors. An urgent need for association studies and linkage analysis should be carried out in order to identify genetic markers (causal relationship) and chromosomal markers. These could provide for the specification of a constellation of markers and the development of appropriate tests to identify subjects at risk likely to develop alcoholism and mental disorders. 7. The immediate issues in secondary prevention and the later outcomes in primary prevention are outlined.

Alcoholism↗