Database files of the study title "SEEKING THE OPTIMAL LOAD INTENSITY OF VARIABILITY IN PRACTICE FOR LEARNING A BALANCE TASK. A RANDOMIZED CONTROLLED TRIAL"

This study conceptualized practice variability as a modifiable training load tailored to individual profiles. A training protocol was carried out by 160 participants, who practiced an unstable seated balance task under four conditions: constant, low, moderate, or high variability. Participants with high intrinsic variability (lower detrended fluctuation analysis - DFA) showed greater error reduction under constant practice, whereas those with low intrinsic variability (higher DFA) benefited more from high-variability practice. These findings suggest a dose-response relationship between variability load and learning, supporting the need for individualized training loads based on a learner’s motor profile. Future research should prospectively test this interaction.本研究将练习变异性概念化为一种可调节的、适配个体特征的训练负荷。共有160名参与者执行了一项训练方案：他们在四种条件下完成不稳定坐姿平衡任务，分别为恒定、低变异性、中变异性及高变异性条件。内在变异性较高（去趋势波动分析（detrended fluctuation analysis, DFA）值较低）的参与者，在恒定练习模式下的错误降低幅度更大；而内在变异性较低（DFA值较高）的参与者，则从高变异性练习中获益更多。上述研究结果表明，变异性负荷与运动学习之间存在剂量-反应关系，支持了基于学习者的运动特征制定个性化训练负荷的必要性。未来研究应前瞻性地验证这一交互效应。