Journal of Osteoporosis and Physical Activity
Open Access

Abstract

The Impact of Body Weight for Bone Mineral Density: A One Year Longitudinal Study in a Young Woman who changed her Lifestyle

Emer Han CG Kemper

A young woman showed a significant decrease in lumbar bone mass after one year of endurance running. She succeeded in running the Boston marathon. In spite of her lifestyle, that was supposed to be beneficial with a high calcium intake (1000 mg/day) and high weight bearing physical activities (7000 MET’s/week), she was not able to maintain lumbar bone mineral density (15% decrease). Reasons can be the concomitant 16% decrease in body weight. It is assumed that the weight bearing effect of her lower body weight during the day is an important factor for maintain the bone mineral density in her lumbar spine.