Furthermore, S at specific La− were higher in A than in GP. Moreover, values of WGly, and WPCr were significantly lower and higher, respectively, in male GP than in female GP. Contributions of WOxi, WGly, and WPCr were higher in GP than in A during GIET. Negative correlations between La− and FATox were also observed in both groups. FATox values were lower in GP than in A, while CHOox and La− were higher in GP than in A. The percentages of HRmax, relative V˙O2mean, V˙CO2mean, and METs in V˙O2mean were all lower in A than they were in GP. Furthermore, jogging/running speeds (S) at specific La−, fat and carbohydrate oxidations (FATox and CHOox), and energetic contributions (oxidative WOxi, glycolytic WGly, and phosphagen WPCr) were calculated. During GIET, heart rate (HR), oxygen uptake (V˙O2mean and V˙CO2mean), metabolic equivalents (METs) in V˙O2mean, and blood glucose and lactate concentrations (La−) were measured. Fifteen general population (GP n = 15, male n = 7, female n = 8) and 15 national-level half-marathon and triathlon athletes (A n = 15, male n = 7, female n = 8) participated in this study. During a session of graded incremental exercise testing (GIET), we investigated metabolic flexibility, the contributions of three energy systems, and performances of individuals with different metabolic characteristics. Metabolic flexibility includes the ability to perform fat and carbohydrate oxidation, as well as oxidative capacity, which is associated with mitochondrial function, energetic contributions, and physical health and performance. Highly trained and elite middle- and long-distance runners are encouraged to adopt a traditional periodization pattern with a hard day-easy day basis, consisting in a shift from a pyramidal TID used during the preparatory and precompetitive periods toward a polarized TID during the competitive period. More pyramidal- and polarized-oriented approaches were used by marathoners and 1500-m runners, respectively. Continuous-tempo runs or interval training sessions at vLT2 in zone 2 (ie, medium and long aerobic intervals) and those in zone 3 (ie, anaerobic or short-interval training) were both used at least once per week each in elite runners, and they were used to increase the number of either vLT2 or z3 sessions to adopt either a pyramidal or a polarized approach, respectively.
0 Comments
Leave a Reply. |