Muscle Oxygen Changes following Sprint Interval Cycling Training in Elite Field Hockey Players

作者：Jones Ben^*; Hamilton David K; Cooper Chris E

来源：PLos One, 2015, 10(3): e0120338.

DOI：10.1371/journal.pone.0120338

This study examined the effects of Sprint Interval Cycling (SIT) on muscle oxygenation kinetics and performance during the 30-15 intermittent fitness test ((IFT)). Twenty-five women hockey players of Olympic standard were randomly selected into an experimental group (EXP) and a control group (CON). The EXP group performed six additional SIT sessions over six weeks in addition to their normal training program. To explore the potential training-induced change, EXP subjects additionally completed 5 x 30s maximal intensity cycle testing before and after training. During these tests near-infrared spectroscopy (NIRS) measured parameters; oxyhaemoglobin + oxymyoglobin (HbO2+MbO2), tissue deoxyhaemoglobin + deoxymyoglobin (HHb+HMb), total tissue haemoglobin (tHb) and tissue oxygenation (TSI %) were taken. In the EXP group (5.34 +/- 0.14 to 5.50 +/- 0.14m.s(-1)) but not the CON group (pre = 5.37 +/- 0.27 to 5.39 +/- 0.30m.s(-1)) significant changes were seen in the 30-15(IFT) performance. EXP group also displayed significant post-training increases during the sprint cycling: Delta TSI (-7.59 +/- 0.91 to -12.16 +/- 2.70%);.HHb+HMb (35.68 +/- 6.67 to 69.44 +/- 26.48 mu M.cm); and Delta HbO2+MbO2 (-74.29 +/- 13.82 to -109.36 +/- 22.61 +/- M.cm). No significant differences were seen in Delta tHb (-45.81 +/- 15.23 to -42.93 +/- 16.24). NIRS is able to detect positive peripheral muscle oxygenation changes when used during a SIT protocol which has been shown to be an effective training modality within elite athletes.

• 出版日期2015-3-25