Effects of long-term sprint interval training on work efficiency and acid-base balance in mountain bike cyclists
BACKGROUND: The aim of the study was to evaluate the changes in work efficiency and acid-base balance after several months of systematic sprint interval training (SIT).
METHODS: Thirty-one mountain bike cyclists with similar training experience were divided into an experimental and control group. Both groups executed an identical 8-month training macrocycle except training in experimental group was augmented to include a SIT component performed twice a week for the first 6 months. Each SIT session involved two to four sets of four 30 s all-out cycling bouts interspersed with 90 s of rest. The sets were separated by 25-40 min of moderate-intensity active recovery. Performance and biochemical changes were evaluated by a sprint interval testing protocol (SITP) consisting of three sets of four maximal sprints administered at baseline (SITP-0) and at 2 (SITP-2), 6 (SITP-6), and 8 (SITP-8) months. Outcomes including total work output, work efficiency, oxygen uptake, lactate and hydrogen ion concentrations were measured.
RESULTS: Statistically significant changes were observed only in experimental group. Total work output and oxygen uptake increased at SITP-2, SITP-6, and SITP-8 compared with SITP-0. Hydrogen ion concentrations decreased at SITP-2 compared with SITP-0, and at SITP-6 compared with SITP-0 and SITP-2. A decrease in work efficiency was observed at SITP-6 compared with SITP-0 and at SITP-8 compared with SITP-2.
CONCLUSIONS: The integration of a long-term SIT intervention can significantly enhance total work output in repeated maximal efforts alongside concomitant decrease in work efficiency, increase in aerobic energy cost and decrease acid-base disturbance.
© Copyright 2019 Medicina dello Sport. Edizioni Minerva Medica. Kaikki oikeudet pidätetään.
Aiheet: | maastopyöräily harjoittelu sprintti intervalliharjoittelu suhde biokemia kuormitusintensiteetti suorituskyky makrosykli |
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Aihealueet: | kestävyys urheilu biologiset ja lääketieteelliset tieteet |
DOI: | 10.23736/S0025-7826.18.03235-0 |
Julkaisussa: | Medicina dello Sport |
Julkaistu: |
2019
|
Vuosikerta: | 72 |
Numero: | 1 |
Sivuja: | 12-24 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |