title: A fast-start pacing strategy speeds pulmonary oxygen uptake kinetics and improves supramaximal running performance.
abstract: The focus of the present study was to investigate the effects of a fast-start pacing strategy on running performance and pulmonary oxygen uptake (VO2) kinetics at the upper boundary of the severe-intensity domain. Eleven active male participants (28±10 years, 70±5 kg, 176±6 cm, 57±4 mL/kg/min) visited the laboratory for a series of tests that were performed until exhaustion: 1) an incremental test; 2) three laboratory test sessions performed at 95, 100 and 110% of the maximal aerobic speed; 3) two to four constant speed tests for the determination of the highest constant speed (HS) that still allowed achieving maximal oxygen uptake; and 4) an exercise based on the HS using a higher initial speed followed by a subsequent decrease. To predict equalized performance values for the constant pace, the relationship between time and distance/speed through log-log modelling was used. When a fast-start was utilized, subjects were able to cover a greater distance in a performance of similar duration in comparison with a constant-pace performance (constant pace: 670 m±22%; fast-start: 683 m±22%; P = 0.029); subjects also demonstrated a higher exercise tolerance at a similar average speed when compared with constant-pace performance (constant pace: 114 s±30%; fast-start: 125 s±26%; P = 0.037). Moreover, the mean VO2 response time was reduced after a fast start (constant pace: 22.2 s±28%; fast-start: 19.3 s±29%; P = 0.025). In conclusion, middle-distance running performances with a duration of 2-3 min are improved and VO2 response time is faster when a fast-start is adopted.
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Tiago
authors.initials: T
authors.lastname: Turnes
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Amadeo Félix
authors.initials: AF
authors.lastname: Salvador
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Felipe Domingos
authors.initials: FD
authors.lastname: Lisbôa
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Rafael Alves
authors.initials: RA
authors.lastname: de Aguiar
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Rogério Santos de Oliveira
authors.initials: RS
authors.lastname: Cruz
authors.affiliation: Human Performance Research Group, Center for Health and Sport Science, Santa Catarina State University, Florianópolis, Brazil.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Caputo
mesh_terms: D000328:Adult; D015444:Exercise; D006801:Humans; D007700:Kinetics; D008168:Lung / Q000502:physiology*; D008297:Male; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption / Q000502:physiology; D012420:Running / Q000502:physiology*
chemical_list: D010100:Oxygen