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Timed Up And Go Test
The Timed Up and Go test (TUG) is a simple test used to assess a person's mobility and requires both Balance (ability), static and dynamic balance. It uses the time that a person takes to rise from a chair, walk three meters, turn around 180 degrees, walk back to the chair, and sit down while turning 180 degrees. During the test, the person is expected to wear their regular footwear and use any mobility aids that they would normally require. The TUG is used frequently in the elderly population, as it is easy to administer and can generally be completed by most older adults. One source suggests that scores of ten seconds or less indicate normal mobility, 11–20 seconds are within normal limits for frail elderly and disabled patients, and greater than 20 seconds means the person needs assistance outside and indicates further examination and intervention. A score of 30 seconds or more suggests that the person may be prone to Fall prevention, falls. Alternatively, a recommended prac ...
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Balance (ability)
Balance in biomechanics, is an ability to maintain the line of gravity (vertical line from centre of mass) of a body within the base of support with minimal postural sway. Sway is the horizontal movement of the centre of gravity even when a person is standing still. A certain amount of sway is essential and inevitable due to small perturbations within the body (e.g., breathing, shifting body weight from one foot to the other or from forefoot to rearfoot) or from external triggers (e.g., visual distortions, floor translations). An increase in sway is not necessarily an indicator of dysfunctional balance so much as it is an indicator of decreased sensorimotor control. Maintaining balance Maintaining balance requires coordination of input from multiple sensory nervous system, sensory systems including the vestibular system, vestibular, somatosensory system, somatosensory, and visual systems. * Vestibular system: sense organs that regulate equilibrium (equilibrioception); directiona ...
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Mobility Aids
A mobility aid is a device designed to assist individuals with impaired movement. These devices help people walk, maintain balance, or get around more easily. Mobility aids include walking supports like canes, crutches, and walkers for those with limited walking ability, as well as wheelchairs and scooters for individuals who cannot walk or need assistance over longer distances. For people who are blind or visually impaired, tools such as white canes and guide dogs offer essential support. There are also aids designed for use within buildings, such as stair lifts and transfer devices that help users move between floors or from one position to another. The term “mobility aid” generally refers to mechanical or assistive devices and is often used in official contexts, including tax or medical equipment classifications. These devices are typically intended to offer mobility similar to what a person might achieve when walking or standing without help. Emerging technologies cont ...
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Older Adults
Old age is the range of ages for people nearing and surpassing life expectancy. People who are of old age are also referred to as: old people, elderly, elders, senior citizens, seniors or older adults. Old age is not a definite biological stage: the chronological age denoted as "old age" varies culturally and historically. Some disciplines and domains focus on the aging and the aged, such as the organic processes of aging (senescence), medical studies of the aging process (gerontology), diseases that afflict older adults (geriatrics), technology to support the aging society (gerontechnology), and leisure and sport activities adapted to older people (such as senior sport). Older people often have limited regenerative abilities and are more susceptible to illness and injury than younger adults. They face social problems related to retirement, loneliness, and ageism. In 2011, the United Nations proposed a human-rights convention to protect old people. History European The hist ...
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Fall Prevention
Fall prevention includes any action taken to help reduce the number of accidental falls suffered by susceptible individuals, such as the elderly and people with neurological ( Parkinson's, Multiple sclerosis, stroke survivors, Guillain-Barre, traumatic brain injury, incomplete spinal cord injury) or orthopedic (lower limb or spinal column fractures or arthritis, post-surgery, joint replacement, lower limb amputation, soft tissue injuries) indications. Adults aged 65 years and older have a 30% chance of falling each year, making fall-related injuries the leading cause of accident-related death for this demographic. Impact of falls Falls and fall-related injuries are among the most common but serious medical problems experienced by older adults. Nearly one-third of older people fall each year, half of which fall more than once per year. Over 3 million Americans over the age of 65 visited hospital emergency departments in 2015 due to fall-related injuries, with over 1 ...
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Intraclass Correlation Coefficient
In statistics, the intraclass correlation, or the intraclass correlation coefficient (ICC), is a descriptive statistic that can be used when quantitative measurements are made on units that are organized into groups. It describes how strongly units in the same group resemble each other. While it is viewed as a type of correlation, unlike most other correlation measures, it operates on data structured as groups rather than data structured as paired observations. The ''intraclass correlation'' is commonly used to quantify the degree to which individuals with a fixed degree of relatedness (e.g. full siblings) resemble each other in terms of a quantitative trait (see heritability). Another prominent application is the assessment of consistency or reproducibility of quantitative measurements made by different observers measuring the same quantity. Early ICC definition: unbiased but complex formula The earliest work on intraclass correlations focused on the case of paired measu ...
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Reliability (statistics)
In statistics and psychometrics, reliability is the overall consistency of a measure. A measure is said to have a high reliability if it produces similar results under consistent conditions:It is the characteristic of a set of test scores that relates to the amount of random error from the measurement process that might be embedded in the scores. Scores that are highly reliable are precise, reproducible, and consistent from one testing occasion to another. That is, if the testing process were repeated with a group of test takers, essentially the same results would be obtained. Various kinds of reliability coefficients, with values ranging between 0.00 (much error) and 1.00 (no error), are usually used to indicate the amount of error in the scores. For example, measurements of people's height and weight are often extremely reliable.The Marketing Accountability Standards Board (MASB) endorses this definition as part of its ongoinCommon Language: Marketing Activities and Metrics Pr ...
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Gait (human)
A gait is a manner of Limb (anatomy), limb movements made during Animal locomotion, locomotion. Human gaits are the various ways in which humans can move, either naturally or as a result of specialized training. Human gait is defined as Bipedalism, bipedal Bipedal gait cycle, forward propulsion of the center of gravity of the human body, in which there are Sinuosity, sinuous movements of different segments of the body with little energy spent. Various gaits are characterized by differences in limb movement patterns, overall velocity, forces, kinetic and potential energy cycles, and changes in contact with the ground. Classification Human gaits are classified in various ways. Each gait can be generally categorized as either natural (one that humans use instinctively) or trained (a non-instinctive gait learned via training). Examples of the latter include hand walking and specialized gaits used in martial arts. Gaits can also be categorized according to whether the person remains ...
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Berg Balance Scale
The Berg Balance Scale (or BBS) is a widely used clinical test of a person's static and dynamic balance abilities, named after Katherine Berg, one of the developers. For functional balance tests, the BBS is generally considered to be the gold standard.Langley, F.A. & Mackintosh, S.F.H. (2007).Functional balance assessment of older community dwelling adults: A systematic review of the literature The Internet Journal of Allied Health Sciences and Practice, 5(4). The test takes 15–20 minutes and comprises a set of 14 simple balance related tasks, ranging from standing up from a sitting position, to standing on one foot. The degree of success in achieving each task is given a score of zero (unable) to four (independent), and the final measure is the sum of all of the scores. The BBS has been shown to have excellent inter-rater (ICC = 0.98) and intra-rater relative reliability (ICC = 0.97), with an absolute reliability varying between 2.8/56 and 6.6/56, with poorer reliability ...
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Barthel Index
The Barthel scale is an ordinal scale used to measure performance in activities of daily living (ADL). Each performance item is rated on this scale with a given number of points assigned to each level or ranking. It uses ten variables describing ADL and mobility. A higher number is associated with a greater likelihood of being able to live at home with a degree of independence following discharge from a hospital. The amount of time and physical assistance required to perform each item are used in determining the assigned value of each item. External factors within the environment affect the score of each item. If adaptations outside the standard home environment are met during assessment, the participant's score will be lower if these conditions are not available. If adaptations to the environment are made, they should be described in detail and attached to the Barthel index. The scale was introduced in 1965, and yielded a score of 0–100 (Mahoney, F.I. & Barthel, D.W., 1965. ...
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Wearable Technology
Wearable technology is any technology that is designed to be used while worn. Common types of wearable technology include smartwatches, fitness trackers, and smartglasses. Wearable electronic devices are often close to or on the surface of the skin, where they detect, analyze, and transmit information such as vital signs, and/or ambient data and which allow in some cases immediate biofeedback to the wearer. Wearable devices collect vast amounts of data from users making use of different behavioral and physiological sensors, which monitor their health status and activity levels. Wrist-worn devices include smartwatches with a touchscreen display, while wristbands are mainly used for fitness tracking but do not contain a touchscreen display. Wearable devices such as activity trackers are an example of the Internet of things, since "things" such as electronics, software, sensors, and connectivity are effectors that enable objects to exchange data (including data quality) through the ...
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Parkinson's Disease
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor system, motor and non-motor systems. Symptoms typically develop gradually and non-motor issues become more prevalent as the disease progresses. The motor symptoms are collectively called parkinsonism and include tremors, bradykinesia, spasticity, rigidity as well as postural instability (i.e., difficulty maintaining balance). Non-motor symptoms develop later in the disease and include behavior change (individual), behavioral changes or mental disorder, neuropsychiatric problems such as sleep abnormalities, psychosis, anosmia, and mood swings. Most Parkinson's disease cases are idiopathic disease, idiopathic, though contributing factors have been identified. Pathophysiology involves progressive nerve cell death, degeneration of nerve cells in the substantia nigra, a midbrain region that provides dopamine to the basal ganglia, a system invo ...
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