Standard leg shape
Standard leg shape is the criterion for judging beautiful legs, involving factors such as leg length, leg-to-body ratio, thigh circumference, calf circumference, thigh length, calf length, etc.
Leg length in the narrow sense and true leg length is scientifically called total leg length [1], but it is not easy to measure. Academically, height minus sitting height is generally used to express leg length. Mahalanobis Trunk Leg Length Index = [(Height - Sitting Height)/Sitting Height] × 100, which is the most reliable and valuable quantitative index for exploring leg-to-body ratio [2], laying the foundation for studying leg-to-body ratio.
Use perineal height or height minus sitting height to express leg length: at the same height, women’s legs are longer than men; but since the leg-to-body ratio is positively correlated with height, the greater the height, the greater the leg-to-body ratio; therefore , the average and extreme values ??of leg-to-body ratio and Mahalanobis trunk and leg length index are slightly larger in men than in women [3][4].
Whether the knees cross the shoulders [5][6] or not, the wrist line crosses the hip line [7][8] or not, and whether the wrist line crosses the perineum or not, the leg-to-body ratio can be roughly judged. The exception is when the horse is raised too high.
Thigh circumference is the horizontal circumference of the thigh through the gluteal groin point, also known as the maximum thigh circumference, not the mid-thigh circumference [1]. Height and Thigh Circumference Index = (Thigh Circumference/Height) × 100, Thigh Length Circumference Index = (Thigh Circumference/Thigh Length) × 100; both of these indices are larger for women than for men, with significant differences; that is to say, women’s legs are relatively thick Short, men are relatively slender[9][10]; this is related to gender differences in body fat distribution[11]. Estrogen inhibits the accumulation of fat in the abdomen and increases the accumulation of fat in the buttocks and thighs, while androgen does the opposite[11] 12].
The length of the thigh is the length of the femur, which is the thickest and longest long bone in the human body [13]. The calf has two long bones, namely the tibia and the fibula. Generally, calf length refers to the length of the tibia [1], and some literature also refers to the length of the fibula [14]. The femur of Chinese people is 7-10cm longer than the tibia. Only when the length of the tibia is added to the height of the foot (i.e., the height of the tibial point) can the length of the femur be close to or exceed [15]. In humans, the average length of (tibia length/femur length) × 100 is only over 80 [16]. Crural index = (calf length/thigh length) × 100. People with a high index are more suitable for jumping sports [17]. The short thighs and long calves can be called antelope legs [18].