a Department of Physiology , Western Australian Institute of Sport , Perth , Australia.
J Sports Sci. 2014;32(11):1001-12. doi: 10.1080/02640414.2013.879333. Epub 2014 Jan 30.
This study compared the use of sand and grass training surfaces throughout an 8-week conditioning programme in well-trained female team sport athletes (n = 24). Performance testing was conducted pre- and post-training and included measures of leg strength and balance, vertical jump, agility, 20 m speed, repeat speed (8 × 20 m every 20 s), as well as running economy and maximal oxygen consumption (VO2max). Heart rate (HR), training load (rating of perceived exertion (RPE) × duration), movement patterns and perceptual measures were monitored throughout each training session. Participants completed 2 × 1 h conditioning sessions per week on sand (SAND) or grass (GRASS) surfaces, incorporating interval training, sprint and agility drills, and small-sided games. Results showed a significantly higher (P < 0.05) HR and training load in the SAND versus GRASS group throughout each week of training, plus some moderate effect sizes to suggest lower perceptual ratings of soreness and fatigue on SAND. Significantly greater (P < 0.05) improvements in VO2max were measured for SAND compared to GRASS. These results suggest that substituting sand for grass training surfaces throughout an 8-week conditioning programme can significantly increase the relative exercise intensity and training load, subsequently leading to superior improvements in aerobic fitness.
本研究比较了沙质和草质训练表面在 8 周训练计划中对训练有素的女性团队运动运动员（n = 24）的使用。在训练前后进行了性能测试，包括腿部力量和平衡、垂直跳跃、敏捷性、20 米速度、重复速度（8 × 20 米，每 20 秒一次）以及跑步经济性和最大摄氧量（VO2max）的测量。在每次训练过程中，心率（HR）、训练负荷（感知努力程度评分（RPE）×持续时间）、运动模式和感知测量都被监测。参与者每周在沙质（SAND）或草质（GRASS）表面上完成 2 次 1 小时的训练，包括间歇训练、冲刺和敏捷性训练以及小型游戏。结果表明，在整个训练过程中，SAND 组的 HR 和训练负荷明显高于 GRASS 组（P < 0.05），并且一些中等效应大小表明 SAND 上的酸痛和疲劳感较低。与 GRASS 相比，SAND 的 VO2max 测量得到了更大的（P < 0.05）改善。这些结果表明，在 8 周的训练计划中，用沙质训练表面代替草质训练表面可以显著增加相对运动强度和训练负荷，从而导致有氧健身的更好改善。
