The waistline and thigh circumference are the main factors that affect the ball speed of frontal header.

腰围和大腿围是影响双脚跳起正面头顶球球速的主要因素。

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However, not only thigh circumference, waistline, neck circumference and body weight are the main factors that effect the ball speed of side header, but hip circumference is correlative.

对双脚跳起侧面头顶球技术影响的主要因素是大腿围、腰围、颈围和体重，而臀围相关性也较高。

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However, not only thigh circumference, waistline, neck circumference and body weight are the main factors that effect the ball speed of side header, but hip circumference is correlative.

对双脚跳起侧面头顶球技术影响的主要因素是大腿围、腰围、颈围和体重，而臀围相关性也较高。

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