TY - JOUR
T1 - The effects of pain and a secondary task on postural sway during standing
AU - Hirata, Rogerio Pessoto
AU - Thomsen, Mikkel Jacobi
AU - Larsen, Frederik Greve
AU - Støttrup, Nicolai
AU - Duarte, Marcos
PY - 2021/10
Y1 - 2021/10
N2 - Background Pain impairs available cognitive resources and somatosensory information, but its effects on postural control during standing are inconclusive. The aim of this study was to investigate whether postural sway is affected by the presence of pain and a secondary task during standing. Methods Sixteen healthy subjects stood as quiet as possible at a tandem stance for 30s on a force platform at different conditions regarding the presence of pain and a secondary task. Subjects received painful stimulations on the right upper arm or lower leg according to a relative pain threshold [pain 7 out 10 on a Visual Analog Scale (VAS) - 0 representing “no pain” and 10 “worst pain imaginable”] using a computer pressurized cuff. The secondary task consisted of pointing to a target using a head-mounted laser-pointer as visual feedback. Center of Pressure (COP) sway area, velocity, mean frequency and sample entropy were calculated from force platform measures. Findings Compared to no painful condition, pain intensity (leg: VAS = 7; arm VAS = 7.4) increased following cuff pressure conditions (P
AB - Background Pain impairs available cognitive resources and somatosensory information, but its effects on postural control during standing are inconclusive. The aim of this study was to investigate whether postural sway is affected by the presence of pain and a secondary task during standing. Methods Sixteen healthy subjects stood as quiet as possible at a tandem stance for 30s on a force platform at different conditions regarding the presence of pain and a secondary task. Subjects received painful stimulations on the right upper arm or lower leg according to a relative pain threshold [pain 7 out 10 on a Visual Analog Scale (VAS) - 0 representing “no pain” and 10 “worst pain imaginable”] using a computer pressurized cuff. The secondary task consisted of pointing to a target using a head-mounted laser-pointer as visual feedback. Center of Pressure (COP) sway area, velocity, mean frequency and sample entropy were calculated from force platform measures. Findings Compared to no painful condition, pain intensity (leg: VAS = 7; arm VAS = 7.4) increased following cuff pressure conditions (P
KW - Experimental pain
KW - Cuff algometry
KW - Secondary task
KW - Postural stability
KW - Attention
U2 - 10.1016/j.humov.2021.102863
DO - 10.1016/j.humov.2021.102863
M3 - Journal article
SN - 0167-9457
VL - 79
JO - Human Movement Science
JF - Human Movement Science
M1 - 102863
ER -