eWellness: Exercise impact on the knee


Dr KK Aggarwal    27 December 2017

Different exercises produce different impact on the knee joints. The best and safest exercises causing minimum impact on the knee for patients post knee replacement or knee arthritis are walking, biking, hiking, riding an exercise bike, riding an elliptical trainer and walking on the treadmill. In sports one can play doubles tennis and not singles. One can also participate in downhill or cross–country skiing. The maximum stress–producing exercises are jogging and golf swings.


  1. Biking generates the least force, producing impact of about 1.3 times the person’s body weight.
  2. Treadmill walking was next best, producing forces of 2.05 times the body weight.
  3. Walking on level ground generated forces of 2.6 times the body weight.
  4. A game of tennis produces forces of 3.1 to 3.8 times the body weight; serving produces the highest impact.
  5. Jogging produced forces of 4.3 times body weight.
  6. Golf swings produces forces of 4.5 times body weight on the forward knee and 3.2 times body weight in the opposite knee.

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