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Cardiorespiratory fitness and aerobic performance adaptations to a 4-week sprint interval training in young healthy untrained females

PURPOSE: The aim of this study was to test the effects of sprint interval training (SIT) on cardiorespiratory fitness and aerobic performance measures in young females. METHODS: Eight healthy, untrained females (age 21 ± 1 years; height 165 ± 5 cm; body mass 63 ± 6 kg) completed cycling peak oxygen...

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Detalles Bibliográficos
Autores principales: Kavaliauskas, Mykolas, Steer, Thomas P., Babraj, John A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Milan 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5397461/
https://www.ncbi.nlm.nih.gov/pubmed/28479931
http://dx.doi.org/10.1007/s11332-016-0313-x
Descripción
Sumario:PURPOSE: The aim of this study was to test the effects of sprint interval training (SIT) on cardiorespiratory fitness and aerobic performance measures in young females. METHODS: Eight healthy, untrained females (age 21 ± 1 years; height 165 ± 5 cm; body mass 63 ± 6 kg) completed cycling peak oxygen uptake ([Formula: see text] peak), 10-km cycling time trial (TT) and critical power (CP) tests pre- and post-SIT. SIT protocol included 4 × 30-s “all-out” cycling efforts against 7 % body mass interspersed with 4 min of active recovery performed twice per week for 4 weeks (eight sessions in total). RESULTS: There was no significant difference in [Formula: see text] peak following SIT compared to the control period (control period: 31.7 ± 3.0 ml kg(−1) min(−1); post-SIT: 30.9 ± 4.5 ml kg(−1) min(−1); p > 0.05), but SIT significantly improved time to exhaustion (TTE) (control period: 710 ± 101 s; post-SIT: 798 ± 127 s; p = 0.00), 10-km cycling TT (control period: 1055 ± 129 s; post-SIT: 997 ± 110 s; p = 0.004) and CP (control period: 1.8 ± 0.3 W kg(−1); post-SIT: 2.3 ± 0.6 W kg(−1); p = 0.01). CONCLUSIONS: These results demonstrate that young untrained females are responsive to SIT as measured by TTE, 10-km cycling TT and CP tests. However, eight sessions of SIT over 4 weeks are not enough to provide sufficient training stimulus to increase [Formula: see text] peak.