Certain types of weight-lifting and jumping exercises for a regular period of time improves bone density in active, healthy, middle-aged men.

Associate professor Pam Hinton said, "Our study was the first to show that exercise-based interventions work to increase bone density in middle-aged men with low bone mass who are otherwise healthy. The study results did not indicate that all kinds of weight lifting will help improve bone mass; rather, targeted exercises made the training programs effective."
Throughout the training programs, study participants rated pain and fatigue after completing their exercises. The subjects reported minimal pain and fatigue, and these ratings decreased over the year. Hinton said, "Individuals who want to use similar training programs to improve bone density should consider their current activity levels and exercise preferences as well as time and equipment constraints."
The study is published in Bone.
Source-ANI