中国壮侗语族人群的肌肉分布及其与年龄的关系

Muscle distribution and its relationship with age in Zhuang-Dong ethnic groups in China

为了解壮侗语族族群肌肉分布特点以及探讨随年龄增长壮侗语族族群各个部位肌肉量变化的基本特点,使用人体脂肪测量仪采用生物电阻抗法在海南、贵州、广西、云南、湖南五个省、自治区测量了壮侗语族13个族群的身体肌肉量。总样本量为5098例(男性为2126例,女性为2972例)。采用握力计测量了2685例男性和3793例女性的左手、右手握力。研究发现,壮侗语族族群男性、女性肌肉量总体评价接近标准,上下肢肌肉量判断属于标准水平。男性、女性均为躯干肌肉量最大,下肢肌肉量次之,上肢肌肉量最小。男性总肌肉量、四肢肌肉量、躯干肌肉量都大于女性。男性3个年龄组间总肌肉量、躯干肌肉量、上肢肌肉量、右下肢肌肉量的差异具有统计学意义,而左下肢肌肉量彼此接近;女性3个年龄组间总肌肉量、四肢肌肉量、躯干肌肉量差异均具有统计学意义。男性除左下肢肌肉量外,其余5项肌肉量指标均与年龄呈显著负相关关系;女性总肌肉量、躯干肌肉量与年龄呈显著负相关,但四肢肌肉量与年龄无显著负相关。壮侗语族族群肌肉量少于北方族群,具有中国南方族群的特点。在南方族群中,壮侗语族族群男性肌肉量中等,女性肌肉量略多一些。

In order to know the characteristics of the Zhuang-Dong ethnic groups distribution of muscle and discussed Zhuang-Dong ethnic groups each place the basic characteristics of the variation of the muscle mass along with the age growth,using the body fat meter adopting bioelectrical impedance analysis of 13 Zhuang-Dong ethnic groups,which include five provinces of Hainan,Guizhou,Guangxi,Yunnan and Hunan.The total sample size is 5098 (2126 males and 2972 females),and the grip strength of the left and right hands of 2685 males and 3793 females is measured with a grip dynamometer.The results show that the muscle mass of male and female in Zhuang-Dong ethnic groups is close to the standard,and the muscle mass of upper and lower limbs is the standard.Both male and female have the largest trunk muscle mass,followed by lower limb muscle mass,and the smallest upper limb muscle mass.Total muscle mass,limb muscle mass and trunk muscle mass of men are greater than those of women.There are statistically significant differences in total muscle mass,trunk muscle mass,upper limb muscle mass and right lower limb muscle mass among the three age groups of males,while the left lower limb muscle mass is close to each other.There are statistically significant differences in total muscle mass,limb muscle mass and trunk muscle mass among the three age groups.In men,except for the muscle mass of the left lower extremity,the other five muscle mass indexes shows significant negative correlation with age.Total muscle mass and trunk muscle mass are negatively correlated with age in women,but there is no significant negative correlation between limb muscle mass and age.The muscle mass of Zhuang-Dong ethnic groups is less than that of northern ethnic group,which has the characteristics of southern ethnic group in China.Among the southern ethnic groups,the Zhuang-Dong ethnic groups have moderate muscle mass in males and slightly more in females.