ADAPTATION OF HUMAN BODY TO OVERWEIGHT AND OBESITY

  • Pilis, A.
  • Stec, K.
  • Zych, M.
  • Michalski, C.
  • Pilis, K.
Abstract:
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 respondents were subjected to a cycloergometer test at the maximum intensity level, during which the highest aerobic power (HAP) was determined along with cardiovascular and respiratory fitness variables. Results: The statistically significant difference in body mass - BM (p<0.001) - was due to the different ratios of body fat (BF) to fat free mass (FFM) present to varying degrees in these subjects (p<0.001). Maximal relative oxygen uptake (VO2max) and HAP of the NBM and OWM groups were similar to one another and also higher than the relative values achieved by the OM group. Moreover, systolic blood pressure (SBP), pulse pressure (PP), cardiac output (CO), absolute maximal oxygen uptake (VO2max), and oxygen pulse (VO2/HR) were lower, but total peripheral resistance (TPR) and respiratory exchange ratio (RER) were higher, in the NBM group than in the OWM and OM groups. Pulmonary ventilation (VE) and carbon dioxide excretion (VCO2) were lower in the NBM than in the OWM group. Conclusions: Moderate gain in body mass in the case of the OWM group does not cause adverse changes in the respiratory system but rather does lead to improvement in the respiratory system’s functioning, and so to a more general increase in physical performance. Further weight gain into the category of obesity, however, leads to a decrease in physical performance associated with deterioration of cardiovascular and respiratory functions.
SGEM Research areas:
Year:
2017
Type of Publication:
In Proceedings
Keywords:
body mass; physical performance; cardiovascular fitness; respiratory fitness
Volume:
17
SGEM Book title:
4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2017
Book number:
3
SGEM Series:
International Multidisciplinary Scientific Conference on Social Sciences and Arts-SGEM
Pages:
41-48
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
24 - 30 August 2017
ISBN:
978-619-7408-20-1
ISSN:
2367-5659
Conference:
4th International Multidisciplinary Scientific Conference on Social Sciences and Arts SGEM 2017, 24 - 30 August 2017
DOI:
10.5593/sgemsocial2017/33/S12.006
Hits: 1037