Abstract
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 (VO2max) 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 language | English |
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Pages (from-to) | 307-313 |
Journal | Biology of Sport |
Volume | 32 |
Issue number | 4 |
Early online date | 10 Oct 2015 |
DOIs | |
Publication status | E-pub ahead of print - 10 Oct 2015 |
Keywords
- adolescents
- sprint interval training (SIT)
- cardio-respiratory fitness (CRF)
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Dr RHONA MARTIN-SMITH
- Sport & Physical Activity - Lec PE & Children's Physical Activity
Person: Academic