Inclusion Criteria:  Postmenopausal women (Last menstrual period > 12 months ago) Aged 60 years or older  Exclusion Criteria:  BMI ≥ 30 Diagnosis (DEXA t-score < -2.5) and/or treatment for the prevention of osteoporosis, including treatmeat with bisphosphonates and non-bisphosphonates (including, but not limited to raloxifene, denosumab, teriparatide, calcitriol and estrogenic hormone replacement therapy). Currently taking estrogenic hormone replacement therapy or history of estrogenic hormone replacement therapy in the past 5 years via any route of administration apart from vaginal. PAR-Q+ screening indicates physical activity is unsuitable.