Gear Shifting of Quadriceps during Isometric Knee Extension Disclosed Using Ultrasonography

Table 1

Variances of clusters.

Subject	#A		#B		#C		#C′		#B′		#A′
1	15.4	Medium	18.7	Large	3.9	Small	8.6	Medium	24.0	Large	5.5	Small
2	3.9	Small	26.8	Medium	76.5	Large	2.3	Small	18.8	Large	8.6	Medium
3	19.0	Large	4.3	Small	15.3	Medium	5.8	Small	36.0	Large	10.1	Medium
4	28.1	Medium	6.7	Small	55.6	Large	7.1	Small	10.3	Medium	11.0	Large
5	27.0	Large	5.0	Medium	3.1	Small	8.5	Small	19.0	Large	14.2	Medium
6	69.9	Large	14.1	Medium	1.3	Small	3.4	Small	41.9	Large	10.2	Medium
7	7.2	Small	17.9	Large	15.7	Medium	4.0	Small	24.3	Large	9.7	Medium
8	16.2	Large	7.3	Small	15.1	Medium	4.0	Medium	31.7	Large	4.0	Small