Prescribing 6-wk of running training using parameters from a self-paced maximal oxygen uptake protocol

Purpose: The self-paced maximal oxygen uptake test (SPV) may offer effective training prescription metrics for athletes. This study aimed to examine whether SPV-derived data could be used for training prescription. Methods: Twenty-four recreationally active male and female runners were randomly assigned between two training groups: (1) Standardised (STND) and (2) Self-Paced (S-P). Participants completed 4 running sessions a week using a global positioning system-enabled (GPS) watch: 2 x interval sessions; 1 x recovery run; and 1 x tempo run. STND had training prescribed via graded exercise test (GXT) data, whereas S-P had training prescribed via SPV data. In STND, intervals were prescribed as 6 x 60% of the time that velocity at VO2max (vVO2max) could be maintained (Tmax). In S-P, intervals were prescribed as 7 x 120 s at the mean velocity of rating of perceived exertion 20 (vRPE20). Both groups used 1:2 work:recovery ratio. Maximal oxygen uptake (VO2max), vVO2max, Tmax, vRPE20, critical speed (CS), and lactate threshold (LT) were determined before and after the 6-week training. Results: STND and S-P training significantly improved VO2max by 4 ± 8% and 6 ± 6%, CS by 7 ± 7% and 3 ± 3%; LT by 5 ± 4% and 7 ± 8%, respectively (all P < 0.05), with no differences observed between groups. Conclusions: Novel metrics obtained from the SPV can offer similar training prescription and improvement in VO2max, CS and LT compared to training derived from a traditional GXT.