Osteoporosis Tocotrienol-rich fraction Virgin coconut oil Air quality Article Artificial neural network Biomechanical strength Bone loss Carbon monoxide Cardiovascular system Descriptive analysis Forecasting Indicator parameters Malaysia Mean square error Multiple linear regression Multiple linear regressions Neural networks Nitrogen oxides Ovariectomized rat Ovariectomy PM2.5 concentration Particles (particulate matter) Particulate Matter Particulate size Particulate size (PM2.5) Particulate size (pm2.5) Respiratory system Sulfur dioxide TJ Mechanical engineering and machinery