“Researchers at the University of Cape Town have found that slower walking speeds are associated with poorer cognitive performance among people living with HIV, including difficulties involving memory and motor skills. The study suggests that a simple walking-speed assessment could eventually help healthcare professionals identify people who may need further cognitive evaluation, although additional research is required before it can be adopted as a routine screening tool.”
UCT Research Highlights the Connection Between Fitness, Walking Speed and Brain Health Among People Living With HIV
Introduction: Walking becomes an important health indicator
South African researchers have highlighted a potentially important connection between physical movement and brain health after a University of Cape Town study found that slower walking speeds were associated with poorer cognitive performance among people living with HIV. Published on 20 October 2026, the research adds to growing interest in how everyday physical functions can provide useful information about a person’s wider health.
The study, conducted by researchers associated with UCT’s Department of Psychiatry and Mental Health and Neuroscience Institute, examined the relationship between walking speed, cognitive abilities and communication between brain networks. Its findings suggest that walking is not only a form of physical activity but may also offer clues about neurological functioning in certain clinical populations.
The research is particularly relevant to South Africa, where accessible approaches to identifying health problems could help healthcare providers make better use of limited resources. However, the findings must be interpreted carefully: walking slowly does not automatically mean that someone has cognitive impairment, and the study does not establish that increasing walking speed will reverse cognitive difficulties.
What the researchers discovered
The research found a significant association between slower walking speeds and poorer overall cognitive performance among participants living with HIV. The reported relationship was particularly relevant to memory, motor skills and executive functioning, which includes mental abilities such as planning, attention and controlling behaviour.
Researchers also identified differences in connectivity within the brain’s frontoparietal network. This network plays an important role in cognitive control, attention and executive functioning. Differences in its connectivity were associated with both walking speed and cognitive performance among participants living with HIV.
These findings matter because physical movement and thinking are sometimes treated as separate aspects of health. In reality, walking requires coordination between the brain, nerves, muscles, balance systems and sensory information. A person’s walking pattern can therefore reflect several interacting processes.
Nevertheless, walking speed is influenced by many factors, including age, pain, injuries, medication effects, fatigue and underlying physical conditions. A slower pace should therefore be understood as a possible clinical clue rather than a diagnosis.
How the South African study was conducted
According to UCT’s published account, researchers recruited 39 participants from a community health centre in Cape Town. They examined associations between walking speed and different aspects of cognitive performance, comparing participants living with HIV with participants who did not have HIV. The researchers also investigated communication between seven brain networks while participants were resting.
The team used resting-state functional magnetic resonance imaging, commonly called resting-state fMRI, to examine patterns of brain connectivity. This imaging technique measures changes in blood oxygenation associated with underlying brain activity, allowing scientists to investigate how different brain regions communicate when a participant is not performing a specific task.
The researchers identified connectivity differences involving the frontoparietal network and the right inferior frontal cortex. These patterns helped explain the observed association between mobility and executive functioning in the study population.
The findings were also replicated in a larger publicly available dataset, according to the university’s report. However, the original Cape Town sample was small, meaning that further research involving larger and more diverse groups will be necessary to determine how widely the findings apply.
Why walking speed matters to fitness and health
Walking is among the most accessible forms of physical activity. It can be performed without expensive gym equipment, specialist sports facilities or advanced training. Depending on a person’s abilities and circumstances, it can also be adapted to different ages and levels of physical fitness.
Regular physical activity supports cardiovascular health, muscular function, mobility and general wellbeing. Walking can form part of a balanced exercise routine, while appropriately supervised strength and balance exercises can provide additional benefits.
The UCT study adds a different dimension to this discussion by examining walking speed as a possible indicator of neurological health. Rather than simply measuring how much exercise someone performs, researchers investigated whether an everyday movement might provide information about cognitive functioning.
This distinction is important. Fitness assessments generally focus on factors such as endurance, strength, flexibility and mobility. Cognitive assessments, meanwhile, examine memory, attention, language and other mental abilities. The study suggests that walking speed may help connect these areas, although it cannot replace a comprehensive clinical assessment.
Potential implications for HIV healthcare
The findings could eventually be relevant to healthcare services supporting people living with HIV. As people live longer with effective treatment, maintaining physical independence, cognitive functioning and quality of life remains important.
Some people living with HIV experience cognitive difficulties, but these problems can have multiple causes. Clinicians may need to consider factors such as other medical conditions, mental health, sleep, medication effects and neurological complications when evaluating symptoms.
A short walking-speed assessment could offer a practical way to identify individuals who might benefit from further evaluation. Such a test could be relatively inexpensive compared with advanced brain imaging, making it potentially attractive for research into resource-limited healthcare environments.
However, the study does not demonstrate that gait-speed screening is already an established standard of care. Before routine implementation, researchers would need to establish appropriate thresholds, test accuracy, reproducibility and performance across different age groups and clinical settings.
Healthcare professionals would also need clear procedures for deciding what happens after an abnormal result. Identifying a possible problem is most useful when patients can access appropriate assessment, treatment and follow-up.
The role of government and public-health policy
Although this is a medical research story rather than an announcement of a new government initiative, it raises questions relevant to South Africa’s public-health priorities.
Health policymakers must consider how research findings can be translated into practical services without placing unnecessary burdens on patients or healthcare workers. Low-cost screening methods can be valuable, but only when their benefits, limitations and resource requirements are properly evaluated.
The potential relationship between physical mobility and cognitive health also reinforces the importance of integrated healthcare. Services addressing HIV, rehabilitation, mental health and chronic disease management may benefit from better coordination where patients experience overlapping needs.
Public-health planning should also recognise that access to exercise is influenced by conditions beyond individual motivation. Safe walking routes, accessible public spaces, affordable recreational facilities and opportunities for physical activity can affect whether people are able to remain active.
These considerations are especially relevant when designing inclusive fitness programmes for older adults and people living with chronic conditions or disabilities. Programmes should prioritise safety, accessibility and individual needs rather than assuming that everyone can participate in the same activities.
The UCT findings do not prescribe a particular policy response. Instead, they provide evidence that could inform future discussions about screening, rehabilitation and the relationship between physical and cognitive health.
Fitness should be accessible and appropriate
For members of the public, the research is a reminder that physical activity should be considered part of a broader approach to wellbeing. People do not need to become competitive athletes or join expensive gyms to incorporate movement into their routines.
Walking, gentle mobility exercises and appropriately tailored strength training may be suitable options for many people. The appropriate activity level depends on individual health, physical ability and any medical advice they have received.
People who notice a persistent change in walking speed, balance, coordination or memory should consider discussing it with a healthcare professional, especially when the change is new or unexplained.
A slower walking pace can have many causes, so individuals should not use this study to diagnose themselves or others. Equally, people living with HIV should not assume that the findings mean they will develop cognitive problems.
Where a person has significant difficulty walking, repeated falls, sudden weakness, confusion or other sudden neurological symptoms, prompt medical assessment is important.
Limitations and the need for further research
One of the most important considerations is the small sample recruited from a single community health centre. Although the study identified meaningful associations, its findings cannot automatically be generalised to every person living with HIV in South Africa.
Further studies should examine larger populations across different provinces, age groups and healthcare settings. Researchers should also investigate whether walking speed can reliably identify cognitive difficulties before symptoms become more apparent.
Longitudinal studies would be particularly useful because they could follow participants over time. Such research might establish whether changes in walking speed precede changes in cognitive performance, occur alongside them or reflect other underlying health conditions.
Researchers would also need to determine whether the relationship is affected by factors such as physical fitness, other illnesses, medication, socioeconomic circumstances and access to healthcare.
Finally, an association between walking speed and cognition does not prove that improving walking speed will improve brain function. Exercise may have broader health benefits, but any specific treatment claims would require separate supporting evidence.
Conclusion: A simple movement may provide valuable clues
The University of Cape Town’s research offers an important contribution to understanding the relationship between physical mobility and cognitive health among people living with HIV.
Its findings indicate that slower walking speeds are associated with poorer cognitive performance and differences in brain-network connectivity. They also suggest that a brief gait-speed assessment could have potential as an accessible screening aid, particularly in settings where advanced diagnostic resources are limited.
For South Africa, the next step is to determine how reliably these findings can be applied in everyday healthcare. Larger studies, clinical validation and carefully designed implementation research will be needed before walking-speed assessments can be recommended as a routine screening method.
In the meantime, the research reinforces the value of treating physical activity, mobility and cognitive wellbeing as connected parts of health. It also highlights the importance of accessible healthcare services that can investigate changes in movement and provide appropriate follow-up.
The central message is not that slower walking necessarily signals disease. Rather, changes in physical function may sometimes offer useful information that deserves attention, professional assessment and further scientific investigation.
