IRCT2017082235517N1.

Study name	Effects of long‐term use of arch support foot orthoses on lower limb kinematics and kinetics during walking in children with flexible flat foot
Methods	Randomised control trial
Participants	N = 30 Inclusion criteria: age range between 9 and 12 years; flexible flat feet; male Exclusion criteria: history of lower limb injury; history of surgery
Interventions	Intervention 1: intervention group: 4 months use of arch support foot orthoses Intervention 2: control group: long‐term use of placebo orthoses; rehabilitation; placebo; Intervention group: 4 months use of arch support foot orthoses; Control group: long term use of placebo orthoses
Outcomes	Walking kinematics Time point: before and after 4 months Method of measurement: vicon cameras; walking kinetics. Timepoint: before and after 4 months. Method of measurement: Force platform.
Starting date	4 September 2017
Contact information	Amir Ali Jafarnezhadgero, amiralijafarnezhad@gmail.com; en.irct.ir/trial/26811
Notes	Mohaghegh Ardabili University, Iran (Islamic Republic of)