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Introduction: Excess body weight adversely affects human health and the body strives to adapt to any increase in weight. Therefore the aim of this study was to determine physical performance and presentation of the cardiovascular and respiratory fitness under the conditions of maximum exercise load in obese and overweight men. Methods: The study involved 12 obese men (OM), 12 overweight men (OWM), and 12 men with normal body mass (NBM). All subjects were of a similar age. After determining the somatic data, the re...

Introduction: Assessing various physiological parameters at the second ventilatory threshold (ATV2) is one of the ways of determining a person's cardiovascular fitness. The intensity of exercise that accompanies the reaching of ATV2 is sufficient to act as a training stimulus. The purpose of this paper is to assess whether a period of one year’s sport specific training produced any metabolic, circulatory, and respiratory changes in athletics runners (AR) and race walkers (RW) when tested at a level of physical exe...