Effect of two training schedules with different distribution of intensity (polarized vs threshold) in the aerobic performance in trained cyclists

Abstract

Currently there are two most used training models that condition the work methodology in endurance athletes: Threshold Training (UMB) and polarized training (POL). The objective of the present study was to compare the effect of both programs on the aerobic performance of trained cyclists. The research included 18 athletes who were randomly distributed in the BMU group (n= 9; age 38 ± 7 years; height 171.8 ± 6.9 cm; body weight 74.10 ± 10.94) and the POL group (n= 9; age 31.4 ± 12.2 years; height 167.5 ± 6.7 cm; weight 63.88 ± 5.37) who completed 4 weeks of training. Both methodologies were executed under similar characteristics in terms of total training time (BMU; 1085 min / wk; POL; 1024 min/wk) but with different intensity distribution (BMU= 70% in zone 1; 30% in zone 2; 0% in zone 3; POL= 88% in zone 1; 0% in zone 2; 12% in zone 3). Body weight (kg) and functional threshold power (PUF) were measured before and after each programming. Only group with POL load reduced their body weight after the program (POL= -1.38%; p = 0.003). Also, group POL improved their PUF (5.48%; p= 0.012) and by default the watt values per kilogram of weight (V/kg) they were increased (7.17%; p= 0.015). Compared to UMB intensity distribution, 4 weeks of POL training improves aerobic performance in trained cyclists.