View clinical trials related to Healthy Older Adults.
Filter by:Memory complaints are a common symptom among Subjective Cognitive Decline, Mild Cognitive Impairment and Alzheimer disease. Indeed, episodic memory and Alzheimer disease are highly sensitive to aging. Many brain areas become active when we remember an event from the past. The precuneus, part of the posterior system of default mode network, has been identified as a central node of episodic memory retrieval and a central node in various psychiatric and neurological disorders, such as Alzheimer disease. Age-related changes have been consistently found in the default mode network connectivity, occurring within its posterior areas and with the reduction of connectivity between anterior and posterior subnetwork. It has also been found that aging is associated with decreased functional connectivity in the precuneus and posterior cingulate of the default mode network. Furthermore, γ-Aminobutyric acid (GABA), which plays an essential role in regulating brain activity and modulating the default mode network, shows a decrease throughout the normal course of aging, in Mild Cognitive Impairment and Alzheimer disease. It was also verified a link between cognitive decline and the dysfunction of the inhibitory activity of GABAergic interneurons, particularly parvalbumin-positive interneurons, that play a role in control local circuitry, brain networks and memory processing. Parvalbumin interneurons are the fast-spiking interneurons that generate and maintain gamma frequency. Gamma band has been associated with the encoding and retrieval of episodic memory. Impairments of gamma oscillations have been observed in healthy aging, Mild Cognitive Impairment and Alzheimer disease. By identifying these functional connectivity changes, non-invasive neuromodulation techniques may offer a new strategy for improving cognitive functions. Transcranial Alternating Current Stimulation (tACS) is a form of non-invasive brain stimulation that modulates cortical activity by applying weak, oscillating electrical currents to the cortex via two or more scalp electrodes. By using alternating currents, it is possible to simulate the rhythmic pattern of electrophysiological activity of the brain. tACS can interact with neural firing at behaviorally relevant frequencies linked to memory. In this randomized, double-blind, sham-controlled, cross-over study, the investigators will evaluate whether stimulation with gamma tACS on the precuneus can improve episodic memory in healthy older adults.
High-intensity exercise is essential for optimal development of cardiorespiratory fitness and health. This is, however, challenging for most people with chronic obstructive pulmonary disease (COPD) due to ventilatory limitations, leading to exercise at lower intensities accompanied by suboptimal stress on the cardiovascular and muscular system. The aims of this cross-over trial is: 1. To compare the acute effects of short-duration supramaximal high-intensity interval training (HIIT) vs. traditional moderate-intensity continuous training (MICT) in people with COPD and matched healthy controls (HC). 2. To investigate the feasibility of supramaximal HIIT in people with COPD and matched HC. 3. To compare the cardiorespiratory demand, exercise intensity and symptoms during a modified Borg Cycle Strength Test (BCST) and a cardiopulmonary exercise test (CPET) in people with COPD and HC.
The aim of study was to evaluate the effects of inspiratory induced muscle fatigue on functional mobility of older adults. Though, limited literature exists regarding inspiratory muscle fatigue and its consequences on functional activities of daily living and balance. Yet, it is not clear how improvement in inspiratory muscle strength is related with improvement in functional mobility.
The composite effect of reduced balance, cognition, gait abnormalities/gait disturbances, and physical activity in older adults leads to fear of falling and decreased participation in daily activities, resulting in reduced cardiovascular fitness and deconditioning. Although many conventional balance and strength training programs have been implemented for older adults, these adults do not receive adequate practice dosage to make significant improvements, most likely due to lack of adherence to therapy and/or inadequate incorporation of all domains of the ICF model (body functions and structures, activities and participation) and lack of targeting cognitive-motor interference (deterioration of motor and/or cognitive function when both tasks are performed together). The use of TeleXercise via Tele rehabilitation has been found to be relatively enjoyable for older adults due to increased motivation and adherence to therapy, which led to the added improvement of physical and cognitive functioning. The overall aim of this pilot is to develop and test the Mimic-Me & Groove TeleXercise platform and then evaluate the compliance and efficacy of the TeleXercise intervention compared to control group receiving standard of care (education on conventional exercise and fall prevention program) for older adults as well as its effect on enhancing balance, gait, and cognition, and physical activity. Investigators also hope that the net effect of improvement in these domains of health outcomes will result in pre and post improvement in endurance and cardiovascular function and reduction of fall risk and improved quality of life of older adults. The study investigates the efficacy of a TeleXercise intervention in older adults by demonstrating its feasibility, compliance rate and also determine the efficacy of the Mimic-Me & Groove TeleXercise in improving health outcomes such as motor and cognitive functions, thereby reducing cognitive-motor interference. The study will also aim to determine the effectiveness of the TeleXercise in improving cardiovascular fitness and physical activity (PA) in older adults.
Transcranial photobiomodulation (tPBM) is a novel, non-invasive neurostimulation technique, which has shown compelling potential for cognitive improvement. Increasing neuroimaging studies have demonstrated that functional brain network models would sensitively and comprehensively delineate action mechanisms of multiple neurostimulation techniques. However, the action mechanism of tPBM based on functional brain network remain largely unknown. In this project, the investigators aim to investigate the effectiveness of tPBM on working memory for healthy older adults. Taking the randomized, single-blind controlled method, participants in the active tPBM group will take active tPBM, and those in the sham tPBM group will take sham tPBM. After that, the investigators will investigate the changes of working. Furthermore, based on the neuroimaging technique, the regulatory mechanism of tPBM in intervening older adults will be revealed from the perspective of altered brain functional networks. This study will provide evidence for understanding whether the tPBM has the potentially therapeutic effect on cognitive function for healthy older adults as a non-drug treatment, and further elucidating the potential brain mechanism, which are of great values in solving scientific and clinical practice issues.
This study evaluates the differences in cognitive function between healthy older adults, older adults with mild Alzheimer's type dementia and older adults with Parkinson's disease and if there are differences in valence assessment and activation that produce them a mood induction task. Subjects are assessed using neuropsychological tests and then a mood induction task based on movie clips is applied.
Scientific Background: Despite the known health benefits of exercising during old age, older people remain highly sedentary. Official exercise guidelines aimed specifically at older people focus primarily on aerobic activity, and tend to be over generalized.There is need for personalized exercise programs, which account for the increasing variability in measures of fitness and mobility with advancing age, and offer exercises aimed at improving balance, strength, flexibility and aerobic fitness, and which can be performed at home. Advancing smartphone technology provides tools which might help address this important area of public health. Study Aims: To develop a novel digital smartphone app, which enables assessment of fitness components, and provides personalized comprehensive exercise programs which update at regular intervals according to changes in fitness levels. Methodology: A prospective interventional randomized control study involving 360 people aged ≥65 living at home/ sheltered living. Stage 1 will include selecting exercise and fitness tests, developing a smartphone app for self-assessment of these tests, and designing exercise programs to meet specific capabilities. A pilot study (n=60) will validate results from the app compared to standard laboratory tests, before finalizing the study platform, and will create a platform for matching exercise programs to levels of fitness. At Stage 2 - the main study - participants (n=300) will be randomly assigned to the intervention group (personalized updating exercise program via the app), an active control group (receiving World Health Organization (WHO) exercise guidelines), or control group (no intervention). Using the app for assessment, all participants will be tested during stage 2 at T0 (baseline), T1 (6 week) T2 (12 weeks), and during Stage 3 follow-up at T3 (18 weeks) and T4 (24 weeks). Novelty and Applicability: This innovative technology will enable older people to test their fitness level, and receive a personalized exercise program based on their current ability and preferences, which changes over time according to their progress. The program will be presented as photos and short videos, available on their smartphones, or easily transferable to computer or television (TV) screens.
The objective of this study is to investigate psychometric properties of dual-task walking assessments and compare effects of simultaneous or sequential combination of physical and cognitive training on dual-task walking and cognitive performance for community-dwelling healthy older adults.
This study will adopt a newly developed computer-based cognitive rehabilitation program targeting the encoding stage of memory. The aims of the study are: 1. To test the feasibility of conducting a newly developed computer-based cognitive rehabilitation program for healthy older adults, people with MCI and mild dementia. 2. To test the effectiveness of the newly developed program in improving cognitive function and enabling maintenance of occupational performance in healthy older adults, people with MCI or mild dementia. Using an iPad application, study participants will learn a memory encoding strategy to support completion of their daily activities. By implementing memory encoding strategies during the mild stages of cognitive decline, the project aims to prolong independence in functional performance. It is anticipated that adoption of the same memory strategies will enable maintain performance as they may experience ongoing cognitive decline.
The objective of this study is to investigate the effects of two different dual-task balance interventions for stroke patients and older adults.