Abstract:

Objective Tibetan teenagers in Tibet by counting their muscle mass with bioelectrical impedance method. Methods We selected randomly 1427 healthy teenagers whose parents were Tibetan in Tibet (710 males, 717 females).They had signed the informed consent.We detected all subjects with the body composition analyzer and concluded the total muscle, trunk(left upper limb,right upper limb,left lower limb,right lower limb)muscle mass.All the results were inputted SPSS(statistical software) and processed by independent sample t-test and variance analysis. Results The total muscle mass, trunk(left upper limb,right upper limb,left lower limb,right lower limb)muscle mass of males were all more than those of females in all age groups of Tibetan teenagers( P <0.05 or P <0.01).In general,the muscle mass of Tibetan teenagers in Tibet increased with age,males’ increasing trend was more pronounced. Conclusion The muscle development of Tibetan teenagers in Tibet is related with age and hormone secretion,it reflects the physiological characteristics in different developmental stages.

Key words: Tibet , Tibetan ,  Muscle , Development , Bioelectrical impedance analysis method , Teenager