Using Wearable Inertial Sensors to Estimate Kinematic Parameters and Variability in the Table Tennis Topspin Forehand Stroke

Table 6

Values of acceleration of “playing hand” in the moment of racquet’s contact with the ball—entire group and particular players—means, standard deviations (SD), variations (V), and coefficients of variation (CV).

	Variable	Topspin forehand
Entire group ()	Mean (m/s^2)	149.2
	SD (m/s^2)	8.6
	V	73.7
	CV (%)	5.8
Players
1	Mean (m/s^2)	159.4
	SD (m/s^2)	3.1
	V	9.6
	CV (%)	2.0
2	Mean (m/s^2)	160.1
	SD (m/s^2)	14.3
	V	204.6
	CV (%)	9.2
3	Mean (m/s^2)	158.9
	SD (m/s^2)	3.6
	V	12.9
	CV (%)	2.3
4	Mean (m/s^2)	156.0
	SD (m/s^2)	6.8
	V	46.0
	CV (%)	4.3
5	Mean (m/s^2)	138.4
	SD (m/s^2)	10.1
	V	101.5
	CV (%)	7.3
6	Mean (m/s^2)	157.9
	SD (m/s^2)	1.8
	V	3.1
	CV (%)	1.1
7	Mean (m/s^2)	148.3
	SD (m/s^2)	14.3
	V	204.7
	CV (%)	9.6

Average variability. Small variability. Not marked CV: high and very high variability.