In synergy with the musculoskeletal system, motor control is responsible of motor performance, determining joint kinematics and kinetics as related to task and environmental constraints.

Multiple metrics have been proposed to quantify motor control from kinematic measures of motion, each index quantifying a different specific aspect, but the characterization of motor control as related to a specific subject or population during the execution of a specific task is still missing.

In the present work, the performance of a novel approach for quantitative parametrization of motor control is tested over 86 primary school children: 36 I grade, 50 II grade; 40 females, 46 males. Children were assessed performing natural and tandem gait using 3 inertial measurement units, and gait variability, regularity, and complexity indexes were calculated from gait temporal parameters and trunk acceleration. Standard Test of Motor Competence and Developmental Coordination Disorder Questionnaire were used to assess reference motor competence.

The proposed set of parameters allowed to discriminate the level of motor competence as related to age and standardised scales, while differences related to sex resulted negligible.

The proposed method can effectively integrate musculoskeletal dynamic models, allowing the parametric characterization of motor control of specific subjects and/or populations.

与肌肉骨骼系统协同作用，运动控制负责运动性能，确定与任务和环境约束相关的关节运动学和动力学。

已经提出了多个指标来从运动的运动学测量量化运动控制，每个指标量化不同的特定方面，但在执行特定任务期间与特定主题或人群相关的运动控制特征仍然缺失。

在目前的工作中，一种新的运动控制定量参数化方法的性能在 86 名小学生身上进行了测试：36 I 年级，50 II 年级；女性40人，男性46人。使用 3 个惯性测量单元评估儿童的自然步态和串联步态，并根据步态时间参数和躯干加速度计算步态可变性、规律性和复杂性指数。运动能力标准测试和发育性协调障碍问卷用于评估参考运动能力。

提议的参数集允许区分与年龄和标准化量表相关的运动能力水平，而与性别相关的差异可以忽略不计。

所提出的方法可以有效地整合肌肉骨骼动态模型，允许对特定受试者和/或人群的运动控制进行参数表征。