Accordingly, a short-term SIT programme is a time efficient alternative for traditional aerobic training to improve metabolic health and aerobic capacity in older adults. RESULTS: Nine supervised SIT sessions moderately (effect size = 0.65 P 0.05) in body composition variables were observed after a short-term SIT period.ĬONCLUSIONS: A 3-week SIT intervention with only nine training sessions increased circulating irisin concentrations, improved inflammatory profile and aerobic capacity without changes in body composition in healthy older men. Body composition measured by dualenergy X-ray absorptiometry, aerobic capacity assessed by direct peak oxygen consumption (VO2peak) test and morning fasting blood samples were obtained before and after a 3-week SIT intervention. METHODS: Eleven older men (63 ± 8 years 178.0 ± 5.5 cm 82.7 ± 8.6 kg 22.7 ± 3.7% body fat) underwent SIT (6 repetitions of 30 s all-out cycling bouts with 4 min active recovery after each bout) three days a week for three consecutive weeks. No association was found between TNF-alpha and the parameters of cardiorespiratory fitness.īACKGROUND: This study investigated the effects of supervised short-term sprint interval training (SIT) on circulating irisin, interleukin (IL)-6 and tumour necrosis factor (TNF)-α concentrations, and aerobic capacity and body composition values in healthy older men.

The CRP was independently and inversely associated with direct measurement of VO2max and the indirect variable of cardiorespiratory fitness vVO2max, in obese adolescents, even after adjustments in body composition, a potential confounding factor. CRP was associated to the VO2max and vVO2max independently of measurements of body composition. No correlations were observed between TNF-alpha and VO2max e vVO2max. Signifi cant correlations of CRP with VO2max and vVO2max were found (r=-0.40 and r=-0,36, respectively). Graded maximal exercise testing was performed to obtain the maximum oxygen consumption (VO2max) and velocity associated with the VO2max (vVO2max). Plasma TNF-alpha was measured by a quantitative two-site high-sensitivity enzyme immunoassay and CRP was measured by high-sensitivityimmunoturbidimetric assay. Obesity was defi ned as BMI>95th percentile of the curve proposed by the Center for Diseases Control. Body composition was estimated by analyzer of tetrapolar bioelectrical impedance.

Anthropometric measurements (weight, height and abdominal circunference) and body composition (BMI, visceral fat, body fat) were assessment. Were selected 57 individuals, 34 girls and 23 boys, with 16.4☑.56 years and body mass index 36.0±4.3 kg/m2. The purposes of this study were: 1) investigate whether different markers of infl ammation (CRP and TNF-alpha) are correlated to cardiorespiratory fi tness in adolescents with obesity 2) examine the association of these variables when adjusted by parameters of body composition. In conclusion, higher circulating levels of IL-6, CRP, and fibrinogen are independently associated with lower Vo(2 max) in asymptomatic men. In separate multivariable linear regression models that adjusted for age, body mass index, CHD risk factors, and lifestyle variables, log IL-6, log CRP, fibrinogen, and WBC count were each inversely associated with Vo(2 max). Multivariable regression was used to assess whether markers of inflammation were associated with Vo(2 max) after adjustment for age, body mass index, CHD risk factors, and lifestyle variables (physical activity level, percent body fat, and alcohol intake). IL-6 and CRP were logarithmically transformed to reduce skewness. IL-6 and CRP were measured by immunoassays, fibrinogen by the Clauss method, and WBC count with a Coulter counter. Physical activity level was assessed by a standardized questionnaire. In asymptomatic men (n = 172, 51 +/- 9.3 yr old), Vo(2 max) was measured during a symptom-limited graded treadmill exercise test.

We investigated whether markers of inflammation, including a cytokine (IL-6), acute-phase reactants, and white blood cell (WBC) count are associated with maximal O(2) consumption (Vo(2 max)) in men without coronary heart disease (CHD).

Nadia kullo