TY - JOUR
T1 - Effect of soft and semi-rigid ankle braces on kinematic and kinetic changes of the knee and ankle joints after forward and lateral drop landing in healthy young women
AU - Maeda, Noriaki
AU - Urabe, Yukio
AU - Sasadai, Junpei
AU - Numano, Shuhei
AU - Fujishita, Hironori
AU - Morikawa, Masanori
AU - Gao, Fan
AU - Kobayashi, Toshiki
N1 - Publisher Copyright:
© 2019-IOS Press and the authors. All rights reserved.
PY - 2019/9/3
Y1 - 2019/9/3
N2 - BACKGROUND: Ankle braces are commonly used to protect ankle joints from a sprain by restricting inversion. However, the difference between a soft brace (SB) and a semi-rigid brace (SRB) regarding kinematic and kinetic changes of the lower limb joints after forward and lateral drop landing is unknown. OBJECTIVE: The aim of this study was to evaluate the effect of SB and SRB, on kinematic and kinetic changes after each drop landing in healthy young women. METHODS: Ten female adults were assessed for one leg while wearing SB, SRB or non-brace (NB). For assessing kinematic and kinetic changes after drop landing, the participant jumped and landed forward and laterally with one leg on a force platform. Knee and ankle joint angle and moment, peak ground reaction force (pGRF), time to peak GRF (TpGRF), the rate of force development (RFD) and GRF impulse (impulse) were measured. RESULTS: The results indicated that knee flexion angle, TpGRF, RFD, and impulse were significantly different between SRB and NB after forward drop landing. SRB demonstrated significant increases in RFD and decreases in impulse. CONCLUSIONS: Semi rigid brace may be beneficial in providing more restriction to the ankle joint for preventing ankle sprains during landing.
AB - BACKGROUND: Ankle braces are commonly used to protect ankle joints from a sprain by restricting inversion. However, the difference between a soft brace (SB) and a semi-rigid brace (SRB) regarding kinematic and kinetic changes of the lower limb joints after forward and lateral drop landing is unknown. OBJECTIVE: The aim of this study was to evaluate the effect of SB and SRB, on kinematic and kinetic changes after each drop landing in healthy young women. METHODS: Ten female adults were assessed for one leg while wearing SB, SRB or non-brace (NB). For assessing kinematic and kinetic changes after drop landing, the participant jumped and landed forward and laterally with one leg on a force platform. Knee and ankle joint angle and moment, peak ground reaction force (pGRF), time to peak GRF (TpGRF), the rate of force development (RFD) and GRF impulse (impulse) were measured. RESULTS: The results indicated that knee flexion angle, TpGRF, RFD, and impulse were significantly different between SRB and NB after forward drop landing. SRB demonstrated significant increases in RFD and decreases in impulse. CONCLUSIONS: Semi rigid brace may be beneficial in providing more restriction to the ankle joint for preventing ankle sprains during landing.
KW - Ankle brace
KW - forward and lateral landing
KW - kinematic and kinetic change
UR - http://www.scopus.com/inward/record.url?scp=85072229784&partnerID=8YFLogxK
U2 - 10.3233/IES-192150
DO - 10.3233/IES-192150
M3 - Journal article
AN - SCOPUS:85072229784
SN - 0959-3020
VL - 27
SP - 219
EP - 225
JO - Isokinetics and Exercise Science
JF - Isokinetics and Exercise Science
IS - 3
ER -