NC State tests resistance training for dogs with chronic kidney disease

A new pilot study at North Carolina State University is asking a practical question many clinicians have likely considered but rarely had data to answer: can structured resistance exercise help dogs with chronic kidney disease safely maintain muscle and function? The study, C-K9 STRIDE, is a prospective, single-arm feasibility trial evaluating a simple, pet parent-administered resistance training program over 12 weeks in dogs with CKD. According to the study description, the goal is not yet to prove efficacy, but to determine whether this kind of intervention is safe, doable at home, and worth testing more rigorously. (cvm.ncsu.edu)

That framing matters because canine CKD care has long centered on medical and nutritional management, with IRIS staging guiding diagnosis, monitoring, and treatment decisions. Those recommendations remain foundational, including staging by creatinine and sub-staging by proteinuria and blood pressure, but they do not offer a well-developed playbook for preserving muscle mass and physical function as disease progresses. At the same time, muscle loss has become a more visible concern in senior and chronically ill dogs, with WSAVA nutrition tools urging clinicians to assess muscle condition score routinely, not just body condition score. (iris-kidney.com)

The rationale behind C-K9 STRIDE fits that gap. The abstract describes the trial as a feasibility study of a “simple, owner-administered resistance training program” intended to address sarcopenia and improve functional outcomes in dogs with CKD. NC State has separately described CKD as a prolonged functional abnormality of one or both kidneys and has highlighted the importance of better biomarkers and earlier intervention in this population, suggesting the school is building a broader research agenda around both detection and management of renal disease. Faculty background also supports the study’s clinical relevance: Vaden’s research portfolio has focused heavily on kidney and urinary tract disease in dogs and cats, and NC State has publicly highlighted nephrology and urology as an area of active institutional investment. (cvm.ncsu.edu)

While direct outside commentary on C-K9 STRIDE itself was limited, the broader literature offers support for the study’s premise. A review on cachexia and sarcopenia in dogs and cats identified chronic kidney disease as one of the chronic illnesses in which muscle loss is clinically important, and noted that walking and other exercise may help address muscle loss in some veterinary patients. Separately, canine geriatric rehabilitation literature argues that targeted exercise and physiotherapy are reasonable strategies for addressing sarcopenia, frailty, and mobility decline in aging dogs. In human CKD, resistance exercise feasibility studies have also reported functional benefits, which likely informs the comparative logic behind this veterinary pilot, even if species differences mean outcomes can’t be assumed. (academic.oup.com)

For practitioners, the immediate takeaway isn’t that resistance training should become standard CKD therapy tomorrow. It’s that the field may be starting to operationalize something many clinicians already recognize: a dog with CKD can be medically stable on paper while still losing strength, stamina, and independence at home. If a low-burden, pet parent-led program proves safe and acceptable, it could give primary care teams, internists, and rehabilitation services a more structured way to address functional decline as part of supportive renal care. That would be especially relevant for older dogs, where CKD, frailty, and sarcopenia often overlap. (frontiersin.org)

There are also practical questions the pilot may help answer beyond safety alone. Feasibility studies can reveal whether pet parents can perform the exercises consistently, whether dogs tolerate them without worsening fatigue or orthopedic discomfort, and which outcome measures are realistic in a clinical setting. Those details matter if the eventual goal is a larger controlled trial. AAHA rehabilitation and senior care resources both point to the growing role of exercise therapy and individualized rehabilitation in chronic disease management, but translating that into kidney patients will require protocols that are simple, affordable, and adaptable to comorbidities common in older dogs. (aaha.org)

Why it matters: C-K9 STRIDE is notable because it pushes CKD care beyond biochemical control and into function-focused medicine. For veterinary teams, that could mean more attention to muscle condition scoring, earlier conversations with pet parents about mobility and weakness, and closer collaboration between internal medicine, nutrition, and rehabilitation. Even a modest result, showing that home resistance work is safe and manageable, would help define the next layer of supportive care for a population that often lives with chronic decline rather than a single reversible event. (wsava.org)

What to watch: The next milestone will be whether NC State reports enrollment progress and publishes feasibility outcomes from the 12-week pilot. If those data are favorable, the logical next step would be a larger controlled study testing whether resistance training changes measurable endpoints such as muscle condition, frailty scores, quality of life, hospitalization frequency, or CKD progression markers. (cvm.ncsu.edu)