Effects of Juvenile Idiopathic Arthritis on Kinematics and Kinetics of the Lower Extremities Call for Consequences in Physical Activities Recommendations

Table 3

Kinetic parameters of the Ground Reaction Force (GRF) in vertical plane (𝑧) and horizontal in gait direction (𝑦) as well as the ankle dorsal moment and power (∗: statistically significant; NS: not significant).

		Control group (𝑛 = 16)	Mean (SD)	JIA-Patients (𝑛 = 35)	Mean (SD)	𝑡-Test
GRF(𝑧) 𝑃1	[% BWT]	107,0	15,5	110,6	9,7	NS
GRF(𝑧) 𝑃2	[% BWT]	71,7	9,8	77,4	7,2	,025∗
GRF(𝑧) 𝑃3	[% BWT]	111,8	16,4	106,9	6,9	NS
GRF(𝑦) 𝑃1	[% BWT]	17,2	3,7	15,8	3,6	NS
GRF(𝑦) 𝑃2	[% BWT]	−21,3	3,2	−17,2	4,3	,001∗
Ankle (max-Dorsi-moment)	[Nm/kg(BWt)]	1,5	,2	1,2	,2	,001∗
Ankle (max-Power generation)	[W/kg(BWt)]	4,5	,9	3,0	1,2	,000∗