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首页> 外文期刊>Journal of Sports Medicine >Acute Neuromuscular Activity in Selected Injury Prevention Exercises with App-Based versus Personal On-Site Instruction: A Randomized Cross-Sectional Study
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Acute Neuromuscular Activity in Selected Injury Prevention Exercises with App-Based versus Personal On-Site Instruction: A Randomized Cross-Sectional Study

机译：采用应用基于应用的伤害预防锻炼的急性神经肌肉活动与个人现场教学：随机横断面研究

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Introduction. A significant step towards sport-related injury prevention is the introduction of easily accessible smartphone applications (apps). However, it is unknown whether this type of app-based instruction facilitates similar acute neuromuscular and biomechanical characteristics of the preventive exercises as achieved when instructed on-site by an expert. Thus, the aim was to evaluate acute neuromuscular characteristics observed during a single bout of selected lower extremity injury preventive exercises instructed by an on-screen app versus on-site individual instruction provided by a physiotherapist. Methods. In a cross-sectional study design, 47 female football and handball players were randomly assigned to receive app instruction (APP group) or on-site instruction provided by a physiotherapist (PHY group) while performing five lower extremity injury preventive exercises. The exercises performed comprised (1) one-legged balance on Airex, (2) vertical drop jump, (3) one-legged horizontal jump onto floor, (4) one-legged horizontal jump onto Airex, and (5) two-hand Kettlebell Swing. Primary outcome was hamstring (biceps femoris and semitendinosus) muscle activity. Secondary outcomes were quadriceps (vastus lateralis and medialis) muscle activity, as well as hip and knee joint angles. Muscle activity was monitored by surface electromyography (EMG) and normalized to the peak amplitude obtained during a maximal voluntary isometric contraction (MVC). Hip and knee joint angles were recorded by a 3D motion analysis system. A linear mixed model was used to evaluate the differences between experimental conditions for each outcome variable. Results. Medial hamstring (semitendinosus) muscle activity was significantly higher during one-legged jump onto Airex (17 percentage points (95% CI 7 to 27)) and Kettlebell Swing (19 percentage points (95% CI 2 to 36)) in the PHY group than the APP group. Likewise, the PHY group demonstrated 18 percentage points (95% CI 1 to 35) and 19 percentage points (95% CI 0 to 38), greater lateral quadriceps muscle (vastus lateralis) activity during one-legged jump onto floor and one-legged jump onto Airex, respectively, compared with that of the APP group. Conclusions. Complex exercises, i.e., Kettlebell Swing and one-legged jump onto Airex, are characterized by lower neuromuscular activity when using app-based instructions compared with on-site instruction provided by a physiotherapist. However, the effectiveness of app-based instruction versus on-site individual instruction in injury prevention interventions remains to be investigated in future longitudinally studies.
机译：介绍。迈向体育相关伤害预防的一步是易于访问的智能手机应用程序（应用程序）。然而，尚不清楚这种基于应用的基于应用的教学是否有助于在专家指示时所达到的预防性练习的类似急性神经肌肉和生物力学特征。因此，目的是评估在由物理治疗师提供的屏幕应用程序与现场各个指导中指示的单一选择的下肢损伤预防锻炼期间观察到的急性神经肌肉特征。方法。在横断面研究设计中，47名女性足球和手球运动员被随机分配给在物理治疗师（PHY集团）提供的应用指令（APP组）或现场指令，同时执行五个下肢损伤预防锻炼。练习包括（1）航空公司的一腿平衡，（2）垂直下降跳跃，（3）一腿水平跳转到地板上，（4）一腿水平跳跃到AIREX，（5）双手Kettlebell Swing。主要结果是腿筋（二头肌股骨和雌雄同体）肌肉活动。二次结果是QuadRiceps（夸张的外侧和METIALIS）肌肉活动，以及髋关节和膝关节角。通过表面肌电图（EMG）监测肌肉活性，并归一化到最大自愿等距收缩（MVC）期间获得的峰值幅度。通过3D运动分析系统记录臀部和膝关节角。线性混合模型用于评估每个结果变量的实验条件之间的差异。结果。一条腿跳跃到AIREX的内侧腿筋（MEMITENDINOSUS）肌肉活动（17个百分点（95％CI 7至27））和KETTLEBELL SWING（PHY）（PHY）（9个百分点（95％CI 2至36））比app组。同样，PHY组展示了18个百分点（95％CI 1至35）和19个百分点（95％CI 0至38），一条腿跳到地板和一腿时的更大的横向曲面肌肌（ZEREUSLISIS）活动与App Group相比，分别跳到AIREX。结论。复杂的练习，即Kettlebell Swing和一腿跳到Airs，其特征在于使用基于应用的指令，与物理治疗师提供的现场指令相比，较低的神经肌肉活动。然而，在未来的纵向研究中，基于应用程序的指示与现场个人指令的有效性仍有待调查。

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