Ng CA, et al. - Fifty community-dwelling postmenopausal women with hip or spine BMD T-score < − 1.0 SD were enrolled for exercise intervention in order to contrast relationships of current and former self-reported bone-specific physical activity, and current accelerometer-ascertained physical activity (PA), with bone structure (BMD and microarchitecture) in postmenopausal women with osteopenia or osteoporosis. It was noted that Bone-specific Physical Questionnaire scores were most constantly related to tibial bone parameters in elderly women, with former PA having enduring advantages for trabecular microarchitecture, and prevailing PA positively related to cortical bone.