March 22, 2023 — Lengthy-distance runners are sometimes warned that they’re carrying out their joints. However operating distance, frequency, and velocity aren’t related to an elevated danger of osteoarthritis, new analysis says.
Osteoarthritis is attributable to the breakdown of cartilage in joints, and it’s the most typical sort of arthritis. Over 32.5 million U.S. adults have osteoarthritis, in line with the CDC.
It has usually been thought that operating might improve the chance of osteoarthritis as a result of it places extra load on joints than strolling or standing, stated Grace Hsiao-Wei Lo, MD, assistant professor of immunology, allergy, and rheumatology on the Baylor Faculty of Drugs in Houston, who was not concerned with the work. Analysis on this space has had combined outcomes: A 2017 evaluation of a number of research discovered that competitive runners did have higher rates of arthritis than leisure runners, whereas one other research Lo performed discovered runners did not have an increased risk of knee osteoarthritis in comparison with non-runners. A 2018 research confirmed that marathon runners had lower instances of arthritis than the overall inhabitants.
On this new research, researchers surveyed 3,804 runners who participated within the 2019 or 2021 Chicago Marathon about their operating historical past, common mileage per week, and common operating tempo. The survey additionally requested about identified danger elements for osteoarthritis together with weight, household historical past of arthritis, and previous accidents of the knee or hip that prevented operating.
Runners, on common, had been about 44 years outdated and ran about 28 miles per week. The most important proportion of respondents had accomplished between two to 5 marathons (37.3%), round 21% respondents had completed six to 10 marathons, and 17% had been operating their first marathon. Research contributors had a median of 15 years of operating expertise, 1,892 reported a earlier hip or knee damage, and 413 had underwent knee or hip surgical procedure. General, 36.4% reported experiencing hip or knee ache prior to now 12 months and seven.3% had been recognized with arthritis.
Researchers discovered that there was no affiliation danger of osteoarthritis and weekly mileage, years spent operating, variety of marathons accomplished, or operating tempo. Respondents who had undergone knee or hip surgical procedure or had a earlier hip or knee damage that prevented operating had been probably to have arthritis. Household historical past of arthritis, larger physique mass index (BMI), and older age had been additionally tied with elevated danger of the situation.
The information needs to be encouraging for runners, stated Matthew Hartwell, MD, an orthopedic surgeon on the College of California, San Francisco, who led the analysis. If somebody doesn’t have accidents or surgical procedures that preserve them from operating, “you possibly can nonetheless proceed to run,” he stated. “There could not essentially be this dose response relationship the place the extra you run, the extra you break down your knee or your hip.”
Nonetheless, 24.2% of runners reported that their physician had suggested them to chop down their mileage or cease operating altogether. Most runners (94.2%) stated they deliberate to run one other marathon.
“The outcomes of this research are in step with the experiences of many lifelong runners and observations of sports activities drugs professionals that osteoarthritis is just not an inevitable consequence of distance operating,” stated Brett Toresdahl, MD, a sports activities drugs physician on the Hospital for Particular Surgical procedure in New York Metropolis, who was not concerned with the research.
Nonetheless, he emphasised that extra analysis is important to know if operating contributes to the chance of growing osteoarthritis. The contributors within the research had been present marathoners, he stated, so it’s probably they’ve wholesome joints that may tolerate operating longer distances.
“If there’s a subset of people that have joints which are negatively affected by operating, they would not probably be registering for a marathon,” he stated in an e-mail interview. Lo stated that evaluating these marathoners to a non-running group would additionally assist present if operating may be dangerous to joints.
Whereas the analysis doesn’t reply the query of whether or not operating can result in osteoarthritis, it helps present the necessity for long-term analysis on how operating impacts joints extra time and normal well being.
“It could take time for the medical neighborhood to maneuver past, ‘if it hurts, don’t do it,’ and reflexively advising in opposition to high-impact train when somebody begins to develop osteoarthritis,” Toresdahl stated.
