TY - JOUR
T1 - Relationships between self-reported ankle function and modulation of Hoffmann reflex in patients with chronic ankle instability
AU - Kim, Min
AU - Hart, Joseph M.
AU - Saliba, Susan A.
AU - Hertel, Jay
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Objective: To examine relationships between self-reported ankle function and Hoffmann (H) reflex modulation during changes in body positions in patients with chronic ankle instability (CAI). Design: Observational. Setting: Laboratory. Participants: Thirty-one young adults with CAI (19 males, 12 females) participated. Main outcome measures: There were two subscales of Foot and Ankle Ability Measure (FAAM) to quantify self-reported ankle function during activities of daily living (ADL) and sports activities. Maximum H-reflexes (H-max) and motor waves (M-max) from soleus and fibularis longus were recorded while participants lied prone and stood in bipedal and unipedal stances. For each muscle, percent change scores in Hmax:Mmax ratios were calculated between each pair of positions: prone-to-bipedal, bipedal-to-unipedal, and prone-to-unipedal, and used as a measure of H-reflex modulation. Pearson correlation coefficients were calculated between FAAM and H-reflex modulation measures. Results: There were significant correlations between: (1) FAAM-ADL and soleus prone-to-unipedal modulation (r = 0.384, p = 0.04), (2) FAAM-Sport and soleus prone-to-unipedal modulation (r = 0.505, p = 0.005), (3) FAAM-Sport and fibular bipedal-to-unipedal modulation (r = 0.377, p = 0.05), and (4) FAAM-Sport and fibular prone-to-unipedal modulation (r = 0.396, p = 0.04). Conclusions: CAI patients presented moderate, positive relationships between self-reported ankle function and H-reflex modulation during changes in body positions.
AB - Objective: To examine relationships between self-reported ankle function and Hoffmann (H) reflex modulation during changes in body positions in patients with chronic ankle instability (CAI). Design: Observational. Setting: Laboratory. Participants: Thirty-one young adults with CAI (19 males, 12 females) participated. Main outcome measures: There were two subscales of Foot and Ankle Ability Measure (FAAM) to quantify self-reported ankle function during activities of daily living (ADL) and sports activities. Maximum H-reflexes (H-max) and motor waves (M-max) from soleus and fibularis longus were recorded while participants lied prone and stood in bipedal and unipedal stances. For each muscle, percent change scores in Hmax:Mmax ratios were calculated between each pair of positions: prone-to-bipedal, bipedal-to-unipedal, and prone-to-unipedal, and used as a measure of H-reflex modulation. Pearson correlation coefficients were calculated between FAAM and H-reflex modulation measures. Results: There were significant correlations between: (1) FAAM-ADL and soleus prone-to-unipedal modulation (r = 0.384, p = 0.04), (2) FAAM-Sport and soleus prone-to-unipedal modulation (r = 0.505, p = 0.005), (3) FAAM-Sport and fibular bipedal-to-unipedal modulation (r = 0.377, p = 0.05), and (4) FAAM-Sport and fibular prone-to-unipedal modulation (r = 0.396, p = 0.04). Conclusions: CAI patients presented moderate, positive relationships between self-reported ankle function and H-reflex modulation during changes in body positions.
KW - Ankle dysfunction
KW - Fibularis longus
KW - Soleus
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U2 - 10.1016/j.ptsp.2015.05.003
DO - 10.1016/j.ptsp.2015.05.003
M3 - Article
C2 - 26541975
AN - SCOPUS:84949634405
VL - 17
SP - 63
EP - 68
JO - Physical Therapy in Sport
JF - Physical Therapy in Sport
SN - 1873-1600
ER -