Lowery Matthew R, Tomkinson Grant R, Peterson Benjamin J, Fitzgerald John S
Human Performance Laboratory, Department of Kinesiology and Public Health Education, University of North Dakota, Grand Forks, ND, USA.
Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences & Sansom Institute for Health Research, University of South Australia, Adelaide, SA, Australia.
J Exerc Sci Fit. 2018 Apr;16(1):32-36. doi: 10.1016/j.jesf.2018.03.003. Epub 2018 Mar 15.
BACKGROUND/OBJECTIVE: The relationship between ventilatory threshold (VT1, VT2) and repeated-sprint ability (RSA) in competitive male ice hockey players was investigated.
Forty-three male ice hockey players aged 18-23 years competing in NCAA Division I, NCAA Division III, and Junior A level participated. Participants performed an incremental graded exercise test on a skate treadmill to determine O, VT1, and VT2 using MedGraphics Breezesuit™ software (v-slope). Participants performed an on-ice repeated shift (RSA) test consisting of 8-maximal skating bouts, lasting approximately 25 s and interspersed with 90 s of passive recovery, to determine first gate, second gate, and total sprint decrement (%). Pearson product-moment correlations and multiple regressions were used to assess relationships between ventilatory threshold variables (VT1, VT2, Stage at VT1, and Stage at VT2) and RSA (first gate, second gate, and total course decrement).
Stage at VT2 was the only variable substantially correlated with first gate ( = -0.35; < 0.05), second gate ( = -0.58; < 0.001) and total course decrement ( = -0.42; < 0.05).
The results of this study demonstrated that VT is substantially associated with RSA, and VT2 is more strongly correlated with RSA than O. This study suggests that longer duration high-intensity interval training at intensities that increase workrate at VT2 may lead to possible improvements in RSA.
背景/目的：研究竞技男子冰球运动员的通气阈（VT1、VT2）与反复冲刺能力（RSA）之间的关系。
43名年龄在18 - 23岁之间、参加美国大学体育协会（NCAA）一级、三级联赛以及青少年A组比赛的男子冰球运动员参与了研究。参与者在滑冰跑步机上进行递增负荷运动测试，使用MedGraphics Breezesuit™软件（v - 斜率法）确定耗氧量、VT1和VT2。参与者进行了一项冰上反复冲刺（RSA）测试，包括8次最大强度滑冰冲刺，每次持续约25秒，中间穿插90秒的被动恢复时间，以确定第一次冲刺、第二次冲刺以及总冲刺速度下降百分比（%）。采用Pearson积差相关和多元回归分析来评估通气阈变量（VT1、VT2、VT1时的阶段、VT2时的阶段）与RSA（第一次冲刺、第二次冲刺和全程下降）之间的关系。
VT2时的阶段是唯一与第一次冲刺（r = -0.35；p < 0.05）、第二次冲刺（r = -0.58；p < 0.001）和全程下降（r = -0.42；p < 0.05）显著相关的变量。
本研究结果表明，通气阈与反复冲刺能力密切相关，且VT2与反复冲刺能力的相关性比耗氧量更强。本研究表明，在VT2强度下进行持续时间更长的高强度间歇训练，可能会使反复冲刺能力得到改善。
