Background

Gait is negatively affected with increasing age. It is widely accepted that training produces physical-functional improvements in older adults, which can be assessed with numerous physical-functional tests. However, very few studies have been carried out using accelerometry to analyse the training effect on kinetic and kinematic variables in older adults, and there is no one that investigate the effects of two different training programs. Therefore, the aim of this study is to analyse the effects of an interval-walking program and a multicomponent program on the acceleration impacts, shock attenuation, step-length, stride frequency, and gait speed in older adults.

Methods

23 participants were divided into multicomponent training group [n = 12, 7 female, 71.58 (4.56) years] and interval-walking group [n = 11, 6 female, 69.64 (3.56) years]. We evaluated the participants using three triaxial accelerometers, placing one on the distal end of each tibia and one on the forehead.

Findings

After 14 weeks' of training, the maximum acceleration values both for the head accelerometer and for the non-dominant tibia, as well as the attenuation in the same leg, increased in the multicomponent training group. The maximum acceleration values for the head and the stride frequency also increased in the interval-walking group. Lower limb strength improved in both groups.

Interpretation

Given the benefits we found for each of these programs, we encourage their consideration when planning older adults training programs and suggest that multicomponent programs should be introduced prior to the start of walking-based programs.

中文翻译：

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在老年人中实施两种不同的训练计划后，对步态的冲击冲击的评估。

背景

随着年龄的增长，步态受到负面影响。培训可以使老年人的身体功能得到改善，这一点已被广泛接受，可以通过许多身体功能测试来评估。然而，很少有研究使用加速度计来分析训练对老年人动力学和运动学变量的影响，并且没有人研究两种不同训练方案的影响。因此，本研究的目的是分析间隔步行程序和多分量程序对老年人的加速度影响，冲击衰减，步长，步幅频率和步态速度的影响。

方法

23名参与者被分为多组训练组[ n  = 12，7位女性，71.58（4.56）岁]和间歇行走组[ n  = 11，6女性，69.64（3.56）岁]。我们使用三个三轴加速度计对参与者进行了评估，其中一个放在每个胫骨的远端，另一个放在前额。

发现

经过14周的训练，在多分量训练组中，头部加速度计和非优势胫骨的最大加速度值以及同一条腿的衰减都增加了。间隔行走组的头部最大加速度和步幅频率也增加。两组的下肢力量均得到改善。

解释

鉴于我们为这些计划中的每一个发现的好处，我们鼓励他们在计划老年人训练计划时考虑这些因素，并建议在开始步行式计划之前引入多组件计划。