Search Results

You are looking at 1 - 10 of 21 items for :

  • "respiratory system" x
Clear All
Restricted access

Ana Sousa, Pedro Figueiredo, David Pendergast, Per-Ludvik Kjendlie, João P. Vilas-Boas and Ricardo J. Fernandes

Swimming has become an important area of sport science research since the 1970s, with the bioenergetic factors assuming a fundamental performance-influencing role. The purpose of this study was to conduct a critical evaluation of the literature concerning oxygen-uptake (VO2) assessment in swimming, by describing the equipment and methods used and emphasizing the recent works conducted in ecological conditions. Particularly in swimming, due to the inherent technical constraints imposed by swimming in a water environment, assessment of VO2max was not accomplished until the 1960s. Later, the development of automated portable measurement devices allowed VO2max to be assessed more easily, even in ecological swimming conditions, but few studies have been conducted in swimming-pool conditions with portable breath-by-breath telemetric systems. An inverse relationship exists between the velocity corresponding to VO2max and the time a swimmer can sustain it at this velocity. The energy cost of swimming varies according to its association with velocity variability. As, in the end, the supply of oxygen (whose limitation may be due to central—O2 delivery and transportation to the working muscles—or peripheral factors—O2 diffusion and utilization in the muscles) is one of the critical factors that determine swimming performance, VO2 kinetics and its maximal values are critical in understanding swimmers’ behavior in competition and to develop efficient training programs.

Restricted access

Cristiane B.B. Antonelli, Charlini S. Hartz, Sileno da Silva Santos and Marlene A. Moreno

popular wheelchair sports practiced. The WCB athletes have some type of disability that usually affects their lower limbs and trunk, and also involves the cardiovascular and respiratory systems. 2 Among these WCB athletes who use wheelchairs even for their locomotion, the respiratory function impairment

Restricted access

Paolo T. Pianosi

is key because resting breathing occurs over the range of operating lung volume where the respiratory system is most compliant, that is, greatest volume displaced for least pressure generated by the respiratory muscles. Ventilation must rise during exercise to extract the volume of O 2 from ambient

Restricted access

Raffy Dotan

, Kamau JMZ , Seeherman HJ , Heglund NC . Design of the mammalian respiratory system. III. Scaling maximum aerobic capacity to body mass: wild and domestic mammals . Resp Physiol . 1980 ; 44 : 25 – 37 . doi:10.1016/0034-5687(81)90075-X 10.1016/0034-5687(81)90075-X 10. Welsman J , Armstrong

Restricted access

Meghan K. Edwards and Paul D. Loprinzi

than Alzheimer’s disease); (7) diseases of the eye and adnexa; (8) diseases of the ear and mastoid process; (9) diseases of the circulatory system (other than heart disease); (10) diseases of the respiratory system (other than chronic lower respiratory diseases, pneumonia, and influenza); (11) diseases

Restricted access

Alex S. Ribeiro, Luiz C. Pereira, Danilo R.P. Silva, Leandro dos Santos, Brad J. Schoenfeld, Denilson C. Teixeira, Edilson S. Cyrino and Dartagnan P. Guedes

hematopoietic organ disease and immune disorders; endocrine, nutritional, and metabolic diseases; mental and behavior disorders; nervous system disorders; circulatory system diseases; respiratory system diseases; and musculoskeletal and connective tissue disease. Medicine options were: antihypertensive

Restricted access

Ítalo R. Lemes, Rômulo A. Fernandes, Bruna C. Turi-Lynch, Jamile S. Codogno, Luana C. de Morais, Kelly A.K. Koyama and Henrique L. Monteiro

Diseases of the nervous system (G00-G99) 0.00 (0,00) 0.00 (0,00) 0.00 (30,41) .20 Diseases of the respiratory system (J00-J99) 0.00 (0,00) 0.00 (0,00) 0.00 (0,33) .78 Endocrine, nutritional, and metabolic diseases (E00-E99) 17.02 (1029,99) 56.17 (1424,95) a 136.13 (2627,36) a,b <.01 Total 61.62 (3401

Restricted access

Andrew Cox, Marcie B. Fyock-Martin and Joel R. Martin

improvement in some respiratory measures in the ETM group only (Table  1 ). 5 , 6 This suggests that the ETM may make it more difficult to breath if worn when exercising and in turn may cause adaptations to the respiratory system. This aspect of the ETM may warrant further investigation. In conclusion, the

Restricted access

Juliana S. Oliveira, Leanne Hassett, Catherine Sherrington, Elisabeth Ramsay, Catherine Kirkham, Shona Manning and Anne Tiedemann

of the cardiovascular, hematological, immunological and respiratory systems, and other specified 1 (0.7) – 1 (0.2) b710 Mobility of joint functions 3 (2) – 3 (0.7) b740 Muscle endurance functions – 4 (2) 4 (1) b730 Muscle power functions – 1 (0.4) 1 (0.2) b280 Sensation of pain 1 (0.7) – 1 (0.2) b134

Restricted access

Joanne Perry, Ashley Hansen, Michael Ross, Taylor Montgomery and Jeremiah Weinstock

, & Beauchamp, 2012 ). HRV refers to the changes in the time intervals between heartbeats and is impacted by a variety of physiological systems including the autonomic nervous system (ANS), as well as the baroreflex (i.e., the body’s ability to regulate blood pressure; Khazan, 2013 ). Furthermore, respiratory