Cyclists risk knee arthritis

accreditation
Cyclists
Cyclists
iStock

Osteoarthritis, the most common type of arthritis, occurs when the cartilage of the joints breaks down, and usually begins after a person reaches middle age. It commonly affects the knees and can be disabling.

How the study was done

To determine whether occupational or leisure-time activities could influence the risk of a person developing the condition, Dr S. Dahaghin of Tehran Medical University in Iran and colleagues compared 480 people with osteoarthritis of the knee and 490 arthritis-free controls.

People who spent more than 30 minutes daily in a squatting position were at 1.5-fold greater risk of knee osteoarthritis, while people who cycled for more than 30 minutes daily were twice as likely to have osteoarthritis in their knees, the researchers found.

People with jobs that required them to bend their knees for more than half an hour daily were about twice as likely to develop knee osteoarthritis, although the findings were of borderline statistical significance.

Housewives were also more likely than women who worked outside the home to develop knee osteoarthritis.

There was no link between playing sports or working in a non-sedentary occupation and knee osteoarthritis.

The findings support the hypothesis that overuse of a joint can influence arthritis risk, the researchers say.

"Education on preventable risk factors should be considered in order to ensure people use knee joints appropriately and avoid overuse," they conclude. – (Reuters Health, October 2009)

Read more:

Running won't raise risk of knee arthritis

How exercise eases knee osteoarthritis

We live in a world where facts and fiction get blurred
In times of uncertainty you need journalism you can trust. For 14 free days, you can have access to a world of in-depth analyses, investigative journalism, top opinions and a range of features. Journalism strengthens democracy. Invest in the future today. Thereafter you will be billed R75 per month. You can cancel anytime and if you cancel within 14 days you won't be billed. 
Subscribe to News24
Voting Booth
Zama zama crackdown: What are your thoughts on West Village residents taking the law into their own hands?
Please select an option Oops! Something went wrong, please try again later.
Results
Authorities should bring in the army already
8% - 423 votes
Illegal miners can't be scapegoated for all crime
58% - 2966 votes
What else did we expect without no proper policing
31% - 1572 votes
Vigilante groups are also part of the problem
3% - 148 votes
Vote
Rand - Dollar
16.59
+0.2%
Rand - Pound
20.03
+0.2%
Rand - Euro
16.95
-0.0%
Rand - Aus dollar
11.55
+0.4%
Rand - Yen
0.12
+0.2%
Gold
1,794.65
+0.3%
Silver
20.54
-0.7%
Palladium
2,228.01
-0.7%
Platinum
937.61
-0.8%
Brent Crude
96.65
+1.8%
Top 40
63,771
0.0%
All Share
70,266
0.0%
Resource 10
65,045
0.0%
Industrial 25
85,829
0.0%
Financial 15
15,741
0.0%
All JSE data delayed by at least 15 minutes Iress logo
Editorial feedback and complaints

Contact the public editor with feedback for our journalists, complaints, queries or suggestions about articles on News24.

LEARN MORE