Zamparo Paola, Zadro Ivan, Lazzer Stefano, Beato Marco, Sepulcri Luigino
Dept of Neurological and Movement Sciences, University of Verona, Verona, Italy.
Int J Sports Physiol Perform. 2014 Nov;9(6):1033-9. doi: 10.1123/ijspp.2013-0258. Epub 2014 Apr 3.
Shuttle runs can be used to study the physiological responses in sports (such as basketball) characterized by sprints (accelerations/ decelerations) and changes of direction.
To determine the energy cost (C) of shuttle runs with different turning angles and over different distances (with different acceleration/deceleration patterns).
Nine basketball players were asked to complete 6 intermittent tests over different distances (5, 10, 25 m) and with different changes of direction (180° at 5 and 25 m; 0°, 45°, 90°, and 180° at 10 m) at maximal speed (v ≈ 4.5 m/s), each composed by 10 shuttle runs of 10-s duration and 30-s recovery; during these runs oxygen uptake (VO(2)), blood lactate (Lab), and C were determined.
For a given shuttle distance (10 m) no major differences where observed in VO(2) (33 mL · min⁻¹ · kg⁻¹), Lab (3.75 mM), and C (~21.2 J · m⁻¹ · kg⁻¹) when the shuttle runs were performed with different turning angles. For a given turning angle (180°), VO(2) and Lab were found to increase with the distance covered (VO(2) from 26 to 35 mL · min⁻¹ · kg⁻¹; Lab from 0.7 to 7.6 mM) while C was found to decrease with it (from 29.9 to 10.6 J · m⁻¹ · kg⁻¹); the relationship between C and d (m) is well described by C = 92.99 × d0.656, R2 = .971.
The metabolic demands of shuttle tests run at maximal speeds can be estimated based on the running distance, while the turning angle plays a minor role in determining C.
穿梭跑可用于研究以冲刺（加速/减速）和方向变化为特征的运动（如篮球）中的生理反应。
确定不同转弯角度和不同距离（具有不同加速/减速模式）的穿梭跑的能量消耗（C）。
九名篮球运动员被要求以最大速度（v≈4.5米/秒）完成6次不同距离（5、10、25米）和不同方向变化（5米和25米处为180°；10米处为0°、45°、90°和180°）的间歇测试，每次测试由10次持续10秒的穿梭跑和30秒的恢复组成；在这些跑步过程中，测定摄氧量（VO₂）、血乳酸（Lab）和C。
对于给定的穿梭跑距离（10米），当以不同转弯角度进行穿梭跑时，VO₂（约33毫升·分钟⁻¹·千克⁻¹）、Lab（约3.75毫摩尔）和C（约21.2焦耳·米⁻¹·千克⁻¹）没有观察到重大差异。对于给定的转弯角度（180°），发现VO₂和Lab随着跑过的距离增加（VO₂从26增加到35毫升·分钟⁻¹·千克⁻¹；Lab从0.7增加到7.6毫摩尔），而C则随之降低（从29.9降低到10.6焦耳·米⁻¹·千克⁻¹）；C与d（米）之间的关系可用C = 92.99×d⁰.⁶⁵⁶很好地描述，R² = 0.971。
以最大速度进行的穿梭测试的代谢需求可以根据跑步距离来估计，而转弯角度在确定C方面作用较小。
