title: Muscle oxygen changes following Sprint Interval Cycling training in elite field hockey players.
abstract: 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 ± 0.14 m.s(-1)) but not the CON group (pre = 5.37 ± 0.27 to 5.39 ± 0.30 m.s(-1)) significant changes were seen in the 30-15 IFT performance. EXP group also displayed significant post-training increases during the sprint cycling: ΔTSI (-7.59 ± 0.91 to -12.16 ± 2.70%); ΔHHb+HMb (35.68 ± 6.67 to 69.44 ± 26.48 μM.cm); and ΔHbO2+ MbO2 (-74.29 ± 13.82 to -109.36 ± 22.61 μM.cm). No significant differences were seen in ΔtHb (-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.
authors: Centre for Sports and Exercise Science, School of Biological Sciences, University of Essex, Colchester, United Kingdom.
authors: Ben
authors: B
authors: Jones
authors: Director of Performance Science, USA Field Hockey, 2913 Spooky Nook Road, Manheim, Pennsylvania, United States of America.
authors: David K
authors: DK
authors: Hamilton
authors: Centre for Sports and Exercise Science, School of Biological Sciences, University of Essex, Colchester, United Kingdom.
authors: Chris E
authors: CE
authors: Cooper
mesh_terms: D000328:Adult; D056352:Athletes; D054874:Athletic Performance / Q000502:physiology; D001642:Bicycling / Q000502:physiology*; D005080:Exercise Test / Q000379:methods; D005260:Female; D006454:Hemoglobins / Q000378:metabolism; D006688:Hockey / Q000502:physiology*; D006801:Humans; D018482:Muscle, Skeletal / Q000378:metabolism* / Q000502:physiology*; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption / Q000502:physiology; D010108:Oxyhemoglobins / Q000378:metabolism; D010806:Physical Education and Training / Q000379:methods; D055815:Young Adult
chemical_list: D006454:Hemoglobins; D010108:Oxyhemoglobins; C100003:deoxyhemoglobin; D010100:Oxygen