Body Composition in Heavy Smokers: Comparison of Segmental Bioelectrical Impedance Analysis and Dual-Energy X-ray Absorptiometry -- Metabolic and immunological consequences of vitamin D deficiency in obese children -- Markers of Bone Metabolism in Children with Nephrotic Syndrome Treated with Corticosteroids -- Endurance Training and the Risk of Bronchial Asthma in Female Cross-Country Skiers -- Effects of Inspiratory Muscle Training on Resistance to Fatigue of Respiratory Muscles During Exhaustive Exercise -- Nutritional Status in Chronic Obstructive Pulmonary Disease and Systemic Sclerosis: Two Systemic Diseases Involving the Respiratory System -- Gradual versus Continuous Increase of Load in Ergometric Tests: Are the Results Comparable? -- Evaluation of Volumetric Changes in Differential Diagnosis of Brain Atrophy and Active Hydrocephalus.