The Influence of Sprint Duration on the Acute Physiological Responses during Sprint Interval Training Sessions
Author
West, Anna
Date
2013Type
Thesis
Publisher
Cardiff Metropolitan University
Metadata
Show full item recordAbstract
The purpose of this study was to examine the acute physiological responses which
occur throughout a sprint interval training (SIT) session and a modified SIT session.
Assessment of cardiorespiratory and muscle oxygenation responses and
performance were compared. Nine male sport students (age 20 ± 0.6 years; height
1.75 ± 0.1 m; body mass 75.9 ± 5.3 kg; mean ± SD) performed a VO2max test and
two SIT sessions on separate days. The SIT session consisted of 6 x 30s ‘all out’
cycling sprints interspersed with 4 minutes recovery. The modified SIT session
consisted of 6 x 10s ‘all out’ cycling sprints interspersed with 4 minutes recovery.
Cardiorespiratory variables, muscle oxygenation (tissue oxygenation index, TOI) and
muscle deoxygenation were recorded at the vastus lateralis using near infrared
spectroscopy (NIRS) during both sessions. Participants were unable to complete six
30s sprints during the SIT session and so three consecutive sprints performed during
SIT and modified SIT were taken forward for analysis. The SIT session elicited a
significantly greater cardiorespiratory response in comparison to modified SIT (44.7
± 5.5 and 34.4 ± 3.7 ml kg-1 min-1, respectively; P < 0.05). Peak power outputs were
greater during modified SIT than in SIT (15.7 ± 2.1 and 13 ± 2.9 W.Kg-1, respectively;
P < 0.05) and were maintained throughout sprint trials. No significant difference was
observed between muscle oxygenation values (TOI) and muscle deoxygenation for
SIT and modified SIT (P > 0.05). The reliability of TOI assessed via NIRS was
moderate (r = 0.68). These data indicate that modified SIT elicits similar degrees of
peripheral stress in comparison to SIT. It can also be suggested that the attainment
of high cardiorespiratory responses is not responsible for previously reported
improvements in VO2max. Peak power generation may therefore be a more
important stimulus for eliciting physiological adaptations. It can be suggested from
the present study that SIT and modified SIT predominantly promote peripheral rather
than central adaptations. Modified SIT could therefore be an effective alternative to
SIT and moderate intensity continuous training.
Collections
Related items
Showing items related by title, author, subject and abstract.
-
The Feasibility of Sprint Interval Training within Judoka utilising Arm
Buckley, Benjamin (Cardiff Metropolitan University, 2014)The aim of this research investigation was to primarily establish whether a sprint interval training (SIT) session and a modified SIT session were feasible for upper body sprint ergometry. In addition, the acute physiological ... -
The effect of squat depth on the post activation potentiation response
Knight, Joel (Cardiff Metropolitan University, 2013)Knight, JW. The effect of different squat depth on the Post Activation Potentiation response during 40m sprint performance. Previous studies have suggested that post-activation potentiation can have a positive effect in ... -
A POST ACTIVATION POTENTIATION STUDY: THE ACUTE EFFECT OF A HEAVY RESISTANCE ROMANIAN DEAD LIFT AND A RESISTED SPRINT PULL UPON 30 METRE SPRINT PERFORMANCES IN SPRINTERS
Craythorne, Matthew (Cardiff Metropolitan University, 2013)Post activation potentiation (PAP) increases levels of muscle twitch force and synaptic activity through prior voluntary maximal muscle contractions (Folland et al., 2008). Performing muscle contractions with near maximal ...