Table 1.

The motion model for soccer kicking.

State	Description	Label
$m_s^1$	Landing of a kicking leg	${\mathrm{L}}_{\mathrm{S}}^1$
$m_p^1$	Last step of a kicking leg before impact	${\mathrm{L}}_{\mathrm{S}}^2$
$m_e^1$ or $m_s^2$	Toe-off of a kicking leg	${\mathrm{L}}_{\mathrm{S}}^3$
$m_p^2$	Backswing of a kicking leg	${\mathrm{L}}_{\mathrm{S}}^4$
$m_e^2$ or $m_s^3$	Maximum hip extension	${\mathrm{L}}_{\mathrm{S}}^5$
$m_p^3$	Acceleration of a kicking leg	${\mathrm{L}}_{\mathrm{S}}^6$
$m_e^3$ or $m_s^4$	Ball impact	${\mathrm{L}}_{\mathrm{S}}^7$
$m_p^4$	Follow-through	${\mathrm{L}}_{\mathrm{S}}^8$
$m_e^4$ or $m_s^5$	Toe speed inflection	${\mathrm{L}}_{\mathrm{S}}^9$
$m_p^5$	Landing of a kicking leg	${\mathrm{L}}_{\mathrm{S}}^{10}$
$m_e^5$	End of kicking	${\mathrm{L}}_{\mathrm{S}}^{11}$