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|Type:||Artigo de periódico|
|Title:||The Effects Of Physical Fitness And Body Composition On Oxygen Consumption And Heart Rate Recovery After High-intensity Exercise|
Freitas Junior I.F.
Balikian Junior P.
|Abstract:||The aim of this study was to investigate the potential relationship between excess post-exercise oxygen consumption (EPOC), heart rate recovery (HRR) and their respective time constants (tvo 2 and t HR) and body composition and aerobic fitness (VO 2max) variables after an anaerobic effort. 14 professional cyclists (age=28.4±4.8 years, height=176.0±6.7 cm, body mass=74.4±8.1 kg, VO 2max=66. 8±7.6 mL·kg 1·min 1) were recruited. Each athlete made 3 visits to the laboratory with 24 h between each visit. During the first visit, a total and segmental body composition assessment was carried out. During the second, the athletes undertook an incremental test to determine VO 2max. In the final visit, EPOC (15-min) and HRR were measured after an all-out 30 s Wingate test. The results showed that EPOC is positively associated with % body fat (r=0.64), total body fat (r=0.73), fat-free mass (r=0.61) and lower limb fat-free mass (r=0.55) and negatively associated with HRR (r= 0.53, p<0.05 for all). HRR had a significant negative correlation with total body fat and % body fat (r= 0.62, r= 0.56 respectively, p<0.05 for all). These findings indicate that VO 2max does not influence HRR or EPOC after high-intensity exercise. Even in short-term exercise, the major metabolic disturbance due to higher muscle mass and total muscle mass may increase EPOC. However, body fat impedes HRR and delays recovery of oxygen consumption after effort in highly trained athletes. © 2012 Georg Thieme Verlag KG Stuttgart New York.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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