![]() ![]() Īsymmetry would seem to be connected with health and disease, but such studies have not been well supported. It is suggested, then, that anthropometric data should be gathered if an asymmetry is detected in the functional test, because of the potentially increased risk of injury. reported that lean mass asymmetry in the lower extremities is at least partially responsible for asymmetry in power and force. This can be connected to strength and power, with a weaker lower limb being unable to produce or absorb the same amount of force as the stronger limb, which often leads to injuries or poor performance, depending on the level of asymmetry. In many sports disciplines where unilateral actions are common such as tennis, field hockey or fencing higher levels of asymmetry exist and could result in athletes developing asymmetric neuromuscular adaptations of the lower extremities. Furthermore, numerous studies have indicated asymmetric distributions of muscle, bone or fat mass among the limbs of athletes. If one side of the body is stronger than the other, it is very likely that this side is also slightly larger. This greater predisposition to asymmetry is connected with those extremities’ greater involvement during unilateral activity-for example, in some occupation involving varied force, such as tailoring or carpentry. Ĭomparisons of upper and lower limbs reveal that the upper extremities are more predisposed to greater asymmetry in muscle mass, body fat or bone mineral density, and such asymmetry increases with work experience. Right-handed individuals have larger dimensions on their right side, whereas left-handed people have larger dimensions on their left side. Minor limb asymmetry is common and more noticeable in the upper limbs than in the lower limbs. Asymmetry may be more prevalent in specific body segments examples include the length of upper limb favoring the right side, and asymmetry in the lower limbs favoring the left side. The contralateral limb is often used as an intra-subject control to assess bone size, shape, density or structural properties-or changes to such as a result of infection, tumor, fracture or asymmetric loading stresses. Those differences can also relate to levels of asymmetry in morphological traits. The human body varies in size according to many factors (e.g., sex, age, climate and physical activity level) and can be described based on its size (e.g., body height and mass), proportion, somatotype and composition (e.g., muscle mass and body fat). This study has potential medical implications, given that a large degree of inter-limb imbalance could be shown to have a negative effect on health the findings of the present study would therefore be important for arriving at an understanding of how to prevent such imbalances, or to mitigate their negative effects. This study provides new data on the morphological asymmetry of given body composition according to somatotype and sex. In the case of muscle mass, no great differences were observed between men, women, or body types. Furthermore, significant variations in the levels of asymmetry between sexes were observed in fat mass in both the arms and legs, with greater variation observed in the arms. The findings demonstrated that dominant somatotype and sex both affect the level of fat mass asymmetry in the arms and legs. Females and males largely exhibited endomorphic and mesomorphic somatotypes, respectively. Significant differentiation was observed between all morphological characteristics (≤ 0.0001) and two body types (≤ 0.0001) among sexes. Body composition was calculated using the bioelectrical impedance method, and the absolute asymmetry index was used for comparisons between the right and left sides of the body. ![]() ![]() The anthropometric characteristics of a group of 618 Polish youths (354 males aged 19.5 ± 1.2 years and 264 females aged 19.2 ± 1.2 years) were evaluated to assess their somatotypes using the Heath–Carter method. The aim of the present study was to determine the level of morphological asymmetry among the general population of Polish youth as it correlates to sex and body type. ![]()
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