Sprint interval training (SIT) is an effective method to maintain cardiorespiratory fitness (CRF) and glucose homeostasis in Scottish adolescents

R. Martin, D.S. Buchan, J.S. Baker, J. Young, N. Sculthorpe, F.M. Grace

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The present study examined the physiological impact of a school based sprint interval training (SIT) intervention in replacement of standard physical education (SPE) class on cardio-respiratory fitness (CRF) and glucose homeostasis during the semester following summer vacation. Participants (n=49) were randomly allocated to either intervention (SIT; n=26, aged 16.9 +/- 0.3 yrs) or control group who underwent standard physical education (SPE; n=23, aged 16.8 +/- 0.6 yrs). CRF (VO(2)max) and glucose homeostasis were obtained prior-to and following 7 weeks of SIT exercise. Significant group x time interaction was observed for CRF (P<0.01) with non-significant trends for fasting insulin (P=0.08), and HOMA-IR (P = 0.06). CRF decreased (P<0.01) in SPE such that POST intervention CRF was significantly lower (P<0.05) in SPE. Fasting plasma glucose (P<0.01), insulin (P<0.01) and HOMA-IR (P<0.01) increased significantly amongst SPE. The main finding of the present study is that 7-weeks of SIT exercise is an effective method of maintaining (but not improving) CRF and fasting insulin homeostasis amongst school-going adolescents. SIT exercise demonstrates potential as a time efficient physiological adjunct to standard PE class in order to maintain CRF during the school term.
Original languageEnglish
Pages (from-to)307-313
Number of pages7
JournalBiology of Sport
Issue number4
Publication statusPublished - 2015


  • adolescents
  • sprint interval training (SIT)
  • cardio-respiratory fitness (CRF)

Cite this