Normative values for single-leg hop performance in Saudi healthy population

Husam Almalki, L. Herrington, Richard K. Jones
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Abstract

Introduction: The purpose of functional outcome measurement is to assess the performance of patients with knee joint injuries and their ability to return to physical activity. However, normative data for these measures are limited and generally include a wide range of ages and activity levels. Normative data can be used to make comparisons with patient populations. It can also be used to compare differences between individual legs. The purpose of this study is to establish normative data for single-leg hop for distance in healthy population. Methods: One hundred and five healthy and active male participants were recruited to participate in the study, 35 in each age group (18–24, 25–34, and 35–44 years old). Participants who voluntarily participate in the study are physically active people. They also ensured that in the past 6 months, they had not suffered any injuries to their lower limbs, which prevented them from performing daily exercises. Participants were asked to perform a single-leg hop on right and left leg and measure the hop distance by using a tape measure. The distance of the jump was calculated by dividing the hop distance by the length of the participant's leg and then multiplying by 100, the hop data is normalized to the length of the limb to obtain a percentage value. Results: For all participants, the mean distance for single-leg hop was 136 cm. Aditionally, normalising the hop to leg length was 151%, which means the participants could hop 1.5 their leg's length. The results showed that there was no difference in the performance of the left and right legs of the middle-aged group (25–34). For the youngest and oldest age groups (18–24 and 35–44), there was a statically significant difference in the performance of the left and right legs. All of the participants scored 85% of limb symmetry index. There were significant differences in hop performance according to age, as aging results in changes and a decrease in hop performance, and in older group, hop performance decreases are considerable. Conclusion: This study has generated normative reference data that may be used to determine the impairments linked to musculoskeletal and neuromuscular disorders, along with ways of monitoring the progression of the disorder over time.
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沙特健康人群单腿跳能力的正常值
功能结局测量的目的是评估膝关节损伤患者的表现及其恢复体力活动的能力。然而,这些措施的规范性数据是有限的,通常包括广泛的年龄和活动水平。规范数据可用于与患者群体进行比较。它也可以用来比较个体腿之间的差异。本研究旨在建立健康人群单腿跳距离的规范性数据。方法:招募健康活跃的男性受试者105名,每个年龄组35名(18-24岁、25-34岁和35 - 44岁)。自愿参加这项研究的参与者都是身体活跃的人。他们还确保在过去的6个月里,他们的下肢没有受到任何伤害,这使他们无法进行日常锻炼。参与者被要求在右腿和左腿上进行单腿跳跃,并用卷尺测量跳跃距离。跳跃距离的计算方法是将跳跃距离除以参与者腿的长度,然后乘以100,将跳跃数据归一化为肢体的长度,得到一个百分比值。结果:所有参与者单腿跳的平均距离为136厘米。此外,正常的跳跃与腿长之比是151%,这意味着参与者可以跳腿长1.5倍。结果显示,中年组(25-34岁)左右腿的表现没有差异。在年龄最小和最大的年龄组(18-24岁和35-44岁)中,左腿和右腿的表现有统计学上的显著差异。所有参与者的肢体对称指数得分为85%。不同年龄的啤酒花性能差异显著,随着年龄的增长,啤酒花性能会发生变化和下降,在年龄较大的组中,啤酒花性能下降幅度较大。结论:这项研究产生了规范性的参考数据,可用于确定与肌肉骨骼和神经肌肉疾病相关的损伤,以及监测疾病随时间进展的方法。
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