The purpose of this study was to investigate the relationship between physical fitness and external load determined by local positioning system (LPS) in a simulated basketball game. Fourteen professional male basketball players performed a lane agility drill, 20-m maximal sprint speed, countermovement jump (CMJ), drop jump, and repeated sprint tests. Player movements during games (two games of 4 × 7 min) were measured using a portable WIMUPRO LPS and six ultra-wideband antennas. Distance covered, and distance covered in different speed zones, accelerations, and decelerations were recorded. The results obtained showed significant relationship between (a) distance at high decelerations (>−2.0 m s⁻²) and 20-m maximal sprint speed (r = 0.669, p = 0.049); (b) 20-m maximal sprint speed and maximal speed in simulated games (r = 0.576, p = 0.031); (c) CMJ height and sprint distance (>24.1 km h⁻¹) covered in simulated games (r = 0.772, p = 0.001); and (d) high decelerations and 20-m maximal sprint speed (r = 0.669, p = 0.049) and best time in the RSA test (r = −0.731, p = 0.039). Coaches and strength and conditioning coaches must adjust their training to optimize speed and jumping ability, as they are reflected in physical performance in-game. Players who reach higher speeds (i.e. RSA_best and 20-m sprint time) and CMJ height in field tests may be affected by greater deceleration load in specific training and competition (eccentric contraction). Since hamstring muscles suffer great strain during deceleration, they are more prone to injury, thus these players may require a specific training program to decrease performance losses and risk of injury.

本研究的目的是研究模拟篮球比赛中由局部定位系统（LPS）确定的体能与外部负荷之间的关系。14 名职业男篮球员进行了车道敏捷性训练、20 米最大冲刺速度、反向跳跃 (CMJ)、跌落跳跃和重复冲刺测试。使用便携式 WIMUPRO LPS 和六个超宽带天线测量游戏过程中的玩家运动（两场 4 × 7 分钟）。记录了行驶距离，以及在不同速度区、加速和减速中行驶的距离。获得的结果显示 (a) 高减速距离 (>-2.0 m s ^-2 ) 和 20 米最大冲刺速度 ( r  = 0.669, p = 0.049); (b) 20 米最大冲刺速度和模拟游戏中的最大速度（r  = 0.576，p  = 0.031）；(c)模拟游戏中覆盖的CMJ 高度和冲刺距离 (>24.1 km h ^-1 ) ( r  = 0.772, p  = 0.001)；(d) 高减速和 20 米最大冲刺速度 ( r  = 0.669, p  = 0.049) 和 RSA 测试中的最佳时间 ( r  = -0.731, p  = 0.039)。教练和体能教练必须调整他们的训练，以优化速度和弹跳能力，因为它们反映在比赛中的身体表现上。达到更高速度的玩家（即 RSA_最佳和 20 米冲刺时间）和现场测试中的 CMJ 高度可能会受到特定训练和比赛中更大的减速负荷（离心收缩）的影响。由于腘绳肌在减速过程中承受很大的压力，因此更容易受伤，因此这些运动员可能需要特定的训练计划来减少表现损失和受伤风险。