Existing studies with strength training intervention use different repetitions, sets and intensities. Campos et al. found that few repetitions (i.e. 3-5 rep x 3 sets) were more effective in increasing muscle strength compared to medium (9-11 rep x 3) and many repetitions (20-28 rep x 2), while the latter gave largest increase in muscular endurance among healthy males. Mosti et al. found increased bone mass in lumbar spine and femur neck and alterations in blood bone markers after 12 weeks of strength training (3-5 reps x 4 sets, 85-90% of 1RM) among postmenopausal women with osteopenia/osteoporosis. A study using both low and high intensity strength training intervention lasting for 12 months found increased bone mineral density (BMD) in lumbar spine among healthy elderly women. The few existing studies using strength training among persons with ED have all used low intensity strength training, and none of these have examined the effects on bone health. Two randomized controlled trials found effect of strength training on body composition, muscle strength and quality of life among persons with Anorexia Nervosa, whereas Del Valle et al. only found effects on quality of life. The low intensity might explain the lack of effects in the latter study. It is therefore a need for studies using adequate dosage of strength training among persons with ED.