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Biomedical subjects

C Maiolo

Publications and source records attributed to C Maiolo.

At least 19 recordsLinked to original sources
PubMed2004

Prevalence of asthma and atopy in Italian Olympic athletes.

This study aimed to assess the prevalence of asthma and atopy in the Italian athletes who were trying for a position on the Italian Olympic team for the 2000 Sydney Olympic Games. Overall, 1060 athletes (mean age 24 years, range 15 - 69 years, 729 males) were recruited and divided into three groups of sport activities: 1) anaerobic, 2) aerobic-anaerobic, 3) aerobic. Asthmatic and atopic athletes were identified by a self-administered, standardized questionnaire modified from the ISAAC questionnaire. Spirometry was performed in the athletes who reported wheezing or asthma and in an equal number of randomly selected controls. Athletes reporting wheezing or asthma were 15 %. However, only a minority of asthmatics had moderate or severe disease: indeed, 2.5 % reported more than 4 attacks in the last year. The prevalence of atopy was 18 %. Asthma was more common in athletes engaged in aerobic sport activities than in the other groups. Asthmatic athletes had a significantly lower value of some spirometric parameters in comparison with the control group. In conclusion, the prevalence of wheezing or asthma in a large sample of Italian competitive athletes was found higher than in general population; respiratory symptoms were more prevalent in athletes engaged in aerobic sport activities; a significant impairment of lung function was found in athletes suffering from mild and rarely symptomatic asthma.

Adolescent↗
PubMed2003

Predicting the intracellular water compartment using artificial neural network analysis.

Artificial neural networks (ANN) are used for a wide variety of data-processing applications such as predicting medical outcomes and classifying clinical data and patients. We investigated the applicability of an ANN for estimating the intracellular water compartment for a population of 104 healthy Italians ranging in age from 19 to 68 years. Anthropometric variables, bioelectric impedance analysis (BIA) variables, and reference values for intracellular water, measured using whole-body (40)K counting (ICW(K40)), were measured for all study participants. The anthropometric variables and the impedance index (height(2)/resistance) were fed to the ANN input layer, which produced as output the estimated values for intracellular water (ICW(ANN)). We also estimated intracellular water using a BIA formula for the same population (ICW(DeLorenzo)) and another for Caucasians (ICW(Gudivaka)). Errors in the estimations generated by ANN and the BIA equations were calculated as the root mean square error (RMSE). The mean (+/-SD) reference value (ICWK40) was 25.01+/-4.50 l, whereas the mean estimated value was 15.20+/-1.79 l (RMSE=11.06 l) when calculated using ICW(DeLorenzo), 18.07+/-1.14 l (RMSE=8.72 l) when using ICW(Gudivaka), and 25.01+/-2.74 l (RMSE=3.22 l) when using ICW(ANN). Based on these results, we deduce that the ANN algorithm is a more accurate predictor for reference ICW(K40) than BIA equations.

Adult↗
PubMed2003

Artificial neural network analysis: a novel application for predicting site-specific bone mineral density.

Dual X-ray absorptiometry (DXA), which is the most commonly used method for the diagnosis and followup of human bone health, is known to produce accurate estimates of bone mineral density (BMD). However, high costs and problems with availability may prevent its use for mass screening. The objective of the present study was to estimate BMD values for healthy persons and those with conditions known to be associated with BMD, using artificial neural networks (ANN). An ANN was used to quantitatively estimate site-specific BMD values in comparison with reference values obtained by DXA (i. e. BMD(spine), BMD(pelvis), and BMD(total)). Anthropometric measurements (i. e. sex, age, weight, height, body mass index, waist-to-hip ratio, and the sum of four skinfold thicknesses) were fed to the ANN as independent input variables. The estimates based on four input variables were generated as output and were generally identical to the reference values for all studied groups. We believe the ANN is a promising approach for estimating and predicting site-specific BMD values using simple anthropometric measurements.

Bone Density↗
PubMed2003

Body composition and respiratory function.

Although the effects of sex, ageing, height, race, and current and past health on pulmonary function tests have been described, only non-significant associations have been observed between body weight and lung function among healthy persons after having accounted for the effects of age and height. However, few studies have considered the influence of body compartments (e. g. lean and fat masses and their distribution) on lung function and respiratory gas exchange. The present work consists of a review of the literature on the effects of body weight components and body composition measurements on lung function. One of the important findings of this review was that the central (or upper body) pattern of fat distribution is negatively associated with airway function and that increases in body muscular mass result in linear increases for all spirometric variables in healthy persons. Nonetheless, the role that body composition plays in lung function still needs to be clarified.

Body Composition↗
PubMed2003

The effect of physical activities of various intensities on the energy expenditure of type 2 diabetic men.

Interventions that focus on changing lifestyles through the combined use of dietary management, weight reduction, and increased physical activity are essential for managing type 2 diabetes mellitus (T2DM). The objective of the present study was to examine mildly obese T2DM patients [ n=10; mean age (+/-SD), 51.29+/-6.80 years; body mass index (BMI), 30.26+/-6.19 kg/m(2); and glycosylated haemoglobin (HbA(1c)), 8.16+/-1.16%)] and to compare them with normoglycaemic persons ( n=10; age, 53.00+/-9.48 years; BMI, 27.63+/-3.33 kg/m(2), and HbA(1c), 5.85+/-0.56%) in terms of energy expenditure while performing physical activities of various intensities (i. e. light, moderate, and heavy). The resting metabolic rate for T2DM patients was significantly higher than that for healthy controls (2200+/-354 kcal/day vs. 1628+/-176 kcal/day, respectively; p<0.0001). The values of energy expenditure at all three levels of physical activity were comparable between the two groups. Physical activity seems to have various beneficial effects on mildly obese T2DM patients because it increases the plasma glucose consumption, resulting in similar energy expenditure in comparison with normoglycaemic individuals.

Adult↗
PubMed2003

Assessing body composition in gastrointestinal disorders.

The assessment of body composition and energy requirements is important for the nutrition of healthy and pathological states such as gastrointestinal disorders, which are known to be associated with abnormalities in body composition among persons with malnutrition and malabsorption. Careful monitoring of body composition is thus recommended for assessing body water compartments, predicting caloric needs and physical performance, and evaluating the development of muscle mass in persons with malabsorption. In the present review we briefly describe the basic body composition models and various techniques used for their assessment and discuss the utility of measuring caloric requirements in persons with gastrointestinal disorders. Assessing body composition may improve the prognosis of malnutrition caused by gastrointestinal disorders and may be useful in monitoring diet treatment.

Body Composition↗
PubMed2003

Evaluating body composition of Italian prostate cancer patients without metastases.

Prostate cancer (PCa) is becoming an increasingly important public health problem worldwide, and anthropometric studies have revealed that body composition is a potential risk factor for this type of cancer. The objective of the present study was to compare Italians with PCa and no history of androgen deprivation therapy or bone metastases with healthy controls in terms of body composition. We recruited 11 PCa patients [mean age (+/-SD), 68.67+/-4.93 years; body mass index (BMI), 28.42+/-2.96 kg/m(2)] and 11 healthy controls matched for age and BMI. Anthropometric and body composition parameters were measured for all participants using dual X-ray absorptiometry and bioelectric impedance analysis techniques. We found that lean body mass, but not fat mass, was significantly lower for PCa patients in comparison with healthy controls (50.24+/-5.03 vs. 53.63+/-5.61 kg, p<0.05). Thus, PCa patients with no history of androgen deprivation therapy and no bone metastasis suffer muscle mass depletion.

Aged↗
PubMed2003

Total body water estimation using bioelectrical impedance: a meta-analysis of the data available in the literature.

Bioelectric impedance analysis (BIA) is commonly used in clinical settings and field studies for estimating total, extracellular, and intracellular water compartments. The objective of the present study was to carry out a meta-analysis of published reports in which total body water (TBW) was estimated using BIA techniques and comparisons were made with reference values. We identified 16 reports conducted among healthy and obese adults and individuals with chronic renal failure. Based on the weighted mean difference, we found that those studies using only multi-frequency BIA did not significantly overestimate the TBW compared with the reference values. Thus, among BIA techniques, multi-frequency BIA seems to be a more accurate method for estimating the TBW compartment for healthy and obese adults and for those with chronic renal failure.

Body Water↗
PubMed2003

Analysis of body water compartments after a short sauna bath using bioelectric impedance analysis.

Studies have suggested that long-term sauna bathing may lower blood pressure in persons with hypertension by causing a direct loss of extracellular water and plasma minerals. The objective of the present study was to evaluate the effect of short-term sauna bathing on body water compartments as estimated by bioelectric impedance analysis (BIA). We recruited 15 men [mean age (+/-SD) of 23.93+/-5.12 years and mean body mass index (BMI) of 23.25+/-2.84 kg/m(2)] and 10 women matched for age and BMI. Total body resistance, reactance, and impedance were measured for all participants using BIA, at baseline, after a short sauna bath, and after a rest period. Total, extracellular, and intracellular water compartments were calculated using BIA formulae. There were no significant differences for any of the body water compartments when comparing the measurements taken before and after the sauna bath and after the rest period. However, it remains to be determined whether or not BIA is sensitive to rapid changes in water volume.

Adult↗
PubMed2003

The application of body cell mass index for studying muscle mass changes in health and disease conditions.

Body mass index (BMI) fails to detect altered nutritional state in the presence of overweight or obesity, since malnutrition can be present and masked by the abnormal amount of fat mass. Measuring body cell mass (BCM) contents for the evaluation of muscle mass and protein tissue states is well accepted. The aim of the present study was to apply body cell mass index (BCMI) to monitor the muscular mass changes of male and female Olympic athletes, renal dialysis patients, and anorexia nervosa patients in comparison with healthy subjects. The BCMI values of male subjects from the healthy group and Olympic athletes groups, but not the renal dialysis group, were significantly higher ( p<0.0001) than those of female subjects from the same groups. In addition, subjects with normal or high BMI values may be malnourished as highlighted by a low BCMI. We believe the BCMI is more sensitive than the BMI for studying the nutritional status of the individual.

Adolescent↗
PubMed2003

A comparative analysis of body water compartments for Egyptian patients with Schistosoma mansoni infection.

In light of reports that schistosomiasis is associated with alterations in nutritional status, and considering that the assessment of body composition and water spaces is important for nutritional and hydration management, we conducted a study to evaluate the reproducibility of estimates of total body water, extracellular water, and intracellular water for Egyptians with Schistosoma mansoni infection using various bioelectric impedance analysis (BIA) formulae in comparison with reference values obtained using dilution techniques. The estimates obtained using the various formulae varied from the reference values, representing either overestimates or underestimates. These differences were attributed to possible limitations inherent to the mathematical formulae, including the fact that they are population specific. These results stress the need to develop universal formulae for estimating body water compartments which would include race and pathology as independent parameters, in addition to BIA and anthropometric variables.

Adult↗
PubMed2003

Body composition analysis for healthy Italian vegetarians.

The elementary nutritional needs of vegetarians are totally, or in great part, supplied by vegetarian food; thus the body composition of vegetarians could differ from that of omnivorous persons. The objective of the present study was to compare healthy Italian vegetarians to healthy omnivorous individuals in terms of body composition, determined using dual X-ray absorptiometry. The study population consisted of 20 vegetarians [mean age (+/-SD), 34.78+/-15.07 years; mean BMI, 22.41+/-2.15 kg/m(2)] and 10 omnivorous persons matched for age and BMI. We found no significant differences between the two groups in terms of fat mass, lean body mass, soft tissue, bone mineral content, or bone mineral density. These findings suggest that the vegetarian diet does not induce negative alterations in body composition.

Absorptiometry, Photon↗
PubMed2003

Lower intestinal bleeding due to aorto-enteric fistula.

The case is described of a man who complained of intermittent fever and fatigue. After three digestive endoscopies and computed tomography, a 99m technetium-HM-PAO-labelled white cell scan was usefully employed to establish diagnosis. Anaerobic aortic Graft infection and anaemia due to lower intermittent occult intestinal bleeding were found. The intestinal bleeding was caused by secondary aorto-jejunal fistula. This condition is rare, but should be suspected whenever a patient with aortic prosthesis presents with occult digestive bleeding and unexplained fever.

Aged↗
PubMed2003

Physical activity energy expenditure measured using a portable telemetric device in comparison with a mass spectrometer.

BACKGROUND: Several studies have evaluated the accuracy of portable metabolic gas analysis systems, which measure physical activity energy expenditure. Since the Cosmed K2 telemetric system, two K4 devices (RQ and b2) have been developed. OBJECTIVE: To compare measurements using the Cosmed K4 RQ with measurements by a traditional method (mass spectrometer) for a sample of healthy subjects performing physical exercise of various intensities. METHODS: Nine healthy male footballers (mean (SD) age 18.3 (2.2) years) performed an incremental exercise running test from 8 km/h to exhaustion, with an increase of 2 km/h for each level of the test protocol. The expired air was collected simultaneously using the Cosmed K4 RQ and Airspec QP9000 mass spectrometer. Oxygen consumption (VO2) and carbon dioxide production (VCO2) were measured at rest and at each exercise intensity. RESULTS: No significant differences were found between VO2 and VCO2 measured by the two instruments, at rest or during exercise. CONCLUSIONS: The application of the Cosmed K4 RQ system for VO2 and VCO2 measurements at rest and during both submaximal and maximal exercise may be of interest to sport physiologists, nutritionists, and doctors.

Adolescent↗
PubMed2002

The impact of body-weight components on forced spirometry in healthy italians.

Many studies have investigated lung function in relation to age and height among Caucasians, however, most of these studies did not consider the individual components of body weight. The objective of the present study was to study the effect of body weight components [bone-free lean body mass (BF-LBM), bone mineral content (BMC), and fat mass (FM)] measured by dual x-ray absorptiometry (DXA) on the lung-function variables (FVC, FEV1, and PEF) and to derive prediction equations for these variables in healthy adult Italians. Dynamic spirometric tests and body composition analysis by DXA were performed on 58 nonsmoking males, mean age ( +/-SE) 26.72 +/- 1.98 years and BMI 25.51 +/- 0.64 kg/m2, and 60 nonsmoking females matched for age and BMI (29.61 +/- 1.65 years and 26.45 +/- 1.05 kg/m2, respectively). Bivariate linear regression analysis showed the variables age, height, BF-LBM, BMC, and the interaction term BF-LBM*Height, but not weight and FM, to correlate significantly with lung-function variables for males and for females separately. Multiple linear regression analysis showed that sex, age, height, and BF-LBM*Height were significantly associated with FVC, FEV1, and PEF. The prediction equations developed for FVC, FEV1, and PEF on the basis of the independent variables i.e. sex, age (y), height (m), and BF-LBM*Height (kg. m) had a significantly higher cumulative correlation coefficient and a lower SEE compared with those based on age and height only. The present report suggests that the BF-LBM, expressed independently from height, can be considered for predicting lung-function variables.

Adolescent↗
PubMed2002

Body composition and pulmonary function in obese type 2 diabetic women.

Most patients with Type 2 diabetes mellitus (T2DM) are overweight and their fat-distribution pattern shows more truncal and less peripheral subcutaneous fat. Obesity also influences the respiratory system by mechanical effects on the diaphragm and chest wall depending on the distribution and size of excess adipose tissues. To determine if the impairment of pulmonary function in T2DM is associated with truncal fat distribution, we performed dynamic spirometric tests and body composition analysis, by dual X-ray absorptiometry, in 12 non-smoker mildly obese T2DM women and in an equal number of control normoglycaemic females, matched for age, body mass index and smoking habits. The forced vital capacity and forced expiratory volume in one second for T2DM women (2.67 +/- 0.30 and 2.15 +/- 0.20 1, respectively) were significantly (p < 0.05) lower than for control women (3.22 +/- 0.30 and 2.58 +/- 0.31 1, respectively). However, trunk fat mass and trunk lean body mass for T2DM women (16.68 +/- 2.31 and 20.87 +/- 1.91 kg, respectively) were comparable with those for controls (16.46 +/- 2.54 and 19.65 +/- 3.42 kg, respectively). Thus, we deduce that pulmonary function impairment in T2DM obese women is not associated with truncal fat mass deposition or with lean mass depletion.

Absorptiometry, Photon↗
PubMed2001

Body composition analysis and changes in airways function in obese adults after hypocaloric diet.

STUDY OBJECTIVES: To determine the relationship between weight-loss and pulmonary function indexes, focusing on forced expiratory flows (ie, FEV(1), forced expiratory flow at 50% of vital capacity [FEF(50)], forced expiratory flow at 75% of vital capacity, and forced expiratory flow at 25 to 75% of vital capacity [FEF(25--75)]). Specifically, to determine the effect of losses in total and segmental fat mass (FM) and of modifications in lean body mass, after restricted hypocaloric diet, on pulmonary function among obese adults. DESIGN: Cross-sectional, observational. SETTINGS: Human Physiology Division, Faculty of Medicine and Surgery, "Tor Vergata" University, Rome, Italy. PATIENTS: Thirty obese adults (mean [+/- SD] baseline body mass index [BMI], 32.25 +/- 3.99 kg/m(2)), without significant obstructive airway disease, were selected from among participants in a weight-loss program. MEASUREMENTS AND RESULTS: Anthropometric, body composition (BC), and respiratory parameters of all participants were measured before and after weight loss. Total and segmental lean body and FM were obtained by dual-energy x-ray absorptiometry. Dynamic spirometric tests and maximum voluntary ventilation (MVV) were performed. The BC parameters (ie, body weight [BW], BMI, the sum skinfold thicknesses, thoracic inhalation circumference, thoracic expiration circumference, total FM, and trunk FM [FMtrunk]) were significantly decreased (p < or = .0001) after a hypocaloric diet. The mean vital capacity, FEV(1), FEF(50), FEF(25-75), expiratory reserve volume, and MVV significantly increased (p < or = 0.05) with weight loss. The correlation coefficient for Delta FEF(25--75) (r = 0.20) was numerically higher than Delta FEF(50) and Delta FEV(1) (r = 0.14 and r = 0.08, respectively) for the BW loss. Moreover, the correlation coefficient for Delta FEF(25--75) (r = 0.45) was significantly higher (p < or = 0.02) than those for Delta FEF(50) and Delta FEV(1) (r = 0.38 and r = 0.15, respectively) for FMtrunk loss. CONCLUSIONS: This study shows that a decrease in total and upper body fat obtained by restricted diet was not accompanied by a decrease in ventilatory muscle mass. FMtrunk loss was found to have improved airflow limitation, which can be correlated to peripheral airways function.

Adult↗