Abstract：
(1) To examine the muscle thickness of various muscle groups of the body to estimate the absolute and relative skeletal muscle mass (SM) in competitive physique-based athletes (Bodybuilding, 212 Bodybuilding, Bikini, and Physique divisions) and (2) to compare values across various divisions of competition and to resistance trained and non-resistance trained individuals.
Eight competitive physique-based athletes (2 M and 6 F), two recreationally resistance trained (1 M and 1 F) and two non-resistance trained (1 M and 1 F) participants had muscle thickness measured by ultrasound at nine sites on the anterior and posterior aspects of the body. SM was estimated from an ultrasound-derived prediction equation and SM index was used to adjust for the influence of standing height (i.e., divided by height squared).
SM values ranged from 19.6 to 60.4 kg in the eight competitive physique-based athletes and 16.1 to 32.6 kg in the four recreationally resistance trained and non-resistance trained participants. SM index ranged from 7.2 to 17.9 kg/m2 in the eight competitive physique-based athletes and 5.8 to 9.3 kg/m2 in the four recreationally resistance trained and non-resistance trained participants.
Overall, varying magnitudes of SM and SM index were present across competitors and their respective divisions of bodybuilding. The Men\'s Open Bodybuilder in the present study had greater values of total SM and SM index compared to previously published values in the literature. Our data provides insight into the extent of SM present in this population and further extends the discussion regarding SM accumulation in humans.
Eight competitive physique-based athletes (2 M and 6 F), two recreationally resistance trained (1 M and 1 F) and two non-resistance trained (1 M and 1 F) participants had muscle thickness measured by ultrasound at nine sites on the anterior and posterior aspects of the body. SM was estimated from an ultrasound-derived prediction equation and SM index was used to adjust for the influence of standing height (i.e., divided by height squared).
SM values ranged from 19.6 to 60.4 kg in the eight competitive physique-based athletes and 16.1 to 32.6 kg in the four recreationally resistance trained and non-resistance trained participants. SM index ranged from 7.2 to 17.9 kg/m2 in the eight competitive physique-based athletes and 5.8 to 9.3 kg/m2 in the four recreationally resistance trained and non-resistance trained participants.
Overall, varying magnitudes of SM and SM index were present across competitors and their respective divisions of bodybuilding. The Men\'s Open Bodybuilder in the present study had greater values of total SM and SM index compared to previously published values in the literature. Our data provides insight into the extent of SM present in this population and further extends the discussion regarding SM accumulation in humans.
摘要：
目的：（1）检查身体各种肌肉群的肌肉厚度，以估计竞技体格运动员的绝对和相对骨骼肌质量（SM）（健美，212健身运动，比基尼,和Physique部门）和（2）比较各个竞争部门的价值以及抵抗训练和非抵抗训练的个人。
方法：8名基于竞技体质的运动员（2米和6华氏度），两名接受娱乐性阻力训练(1M和1F)和两名非阻力训练(1M和1F)的参与者通过超声在身体前部和后部的9个部位测量了肌肉厚度.从超声得出的预测方程估计SM，并使用SM指数来调整站立高度的影响(即，除以高度平方)。
结果：8名基于竞技体格的运动员的SM值在19.6至60.4公斤之间，在4名娱乐性阻力训练和非阻力训练的参与者中，SM值在16.1至32.6公斤之间。8名基于竞技体质的运动员的SM指数范围为7.2至17.9kg/m2，4名经过娱乐性抵抗训练和非抵抗训练的参与者的SM指数范围为5.8至9.3kg/m2。
结论：总体而言，在竞争对手及其各自的健美部门中，SM和SM指数的幅度各不相同。与文献中先前发表的值相比，本研究中的男士开放式健美运动员的总SM和SM指数值更大。我们的数据提供了对该人群中SM存在程度的了解，并进一步扩展了有关SM在人类中积累的讨论。
方法：8名基于竞技体质的运动员（2米和6华氏度），两名接受娱乐性阻力训练(1M和1F)和两名非阻力训练(1M和1F)的参与者通过超声在身体前部和后部的9个部位测量了肌肉厚度.从超声得出的预测方程估计SM，并使用SM指数来调整站立高度的影响(即，除以高度平方)。
结果：8名基于竞技体格的运动员的SM值在19.6至60.4公斤之间，在4名娱乐性阻力训练和非阻力训练的参与者中，SM值在16.1至32.6公斤之间。8名基于竞技体质的运动员的SM指数范围为7.2至17.9kg/m2，4名经过娱乐性抵抗训练和非抵抗训练的参与者的SM指数范围为5.8至9.3kg/m2。
结论：总体而言，在竞争对手及其各自的健美部门中，SM和SM指数的幅度各不相同。与文献中先前发表的值相比，本研究中的男士开放式健美运动员的总SM和SM指数值更大。我们的数据提供了对该人群中SM存在程度的了解，并进一步扩展了有关SM在人类中积累的讨论。
