TY - JOUR
T1 - Temporal kinematic differences between forward and backward jump-landing
AU - Xu, Datao
AU - Cen, Xuanzhen
AU - Wang, Meizi
AU - Rong, Ming
AU - István, Bíró
AU - Baker, Julien
AU - Gu, Yaodong
N1 - Funding Information:
Funding: This study was funded by the Key Project of the National Social Science Foundation of China (19ZDA352), National Natural Science Foundation of China(NSFC)-Royal Society of Edinburgh(RSE) Joint Project (81911530253), National Key R&D Program of China (2018YFF0300903), and K.C. Wong Magna Fund in Ningbo University.
Funding Information:
This study was funded by the Key Project of the National Social Science Foundation of China (19ZDA352), National Natural Science Foundation of China(NSFC)-Royal Society of Edinburgh(RSE) Joint Project (81911530253), National Key R&D Program of China (2018YFF0300903), and K.C. Wong Magna Fund in Ningbo University.
PY - 2020/9/2
Y1 - 2020/9/2
N2 - Backward jump-landing during sports performance will result in dynamic postural instability with a greater risk of injury, and most research studies have focused on forward landing. Differences in kinematic temporal characteristics between single-leg and double-leg backward jump-landing are seldom researched and understood. The purpose of this study was to compare and analyze lower extremity kinematic differences throughout the landing phases of forward and backward jumping using single-leg and double-leg landings (FS and BS, FD and BD). Kinematic data were collected during the landing phases of FS and BS, FD and BD in 45 participants. Through statistical parametric mapping (SPM) analysis, we found that the BS showed smaller hip and knee flexion and greater vertical ground reactive force (VGRF) than the FS during 0–37.42% (p = 0.031), 16.07–32.11% (p = 0.045), and 23.03–17.32% (p = 0.041) landing phases. The BD showed smaller hip and knee flexion than the FD during 0– 20.66% (p = 0.047) and 0–100% (p < 0.001) landing phases. Most differences appeared within a time frame during the landing phase at 30–50 ms in which non-contact anterior cruciate ligament (ACL) injuries are thought to occur and are consistent with the identification of risk in biomechanical analysis. A landing strategy that consciously increases the knee and hip flexion angles during backward landing should be considered for people as a measure to avoid injury during the performance of this type of physical activity.
AB - Backward jump-landing during sports performance will result in dynamic postural instability with a greater risk of injury, and most research studies have focused on forward landing. Differences in kinematic temporal characteristics between single-leg and double-leg backward jump-landing are seldom researched and understood. The purpose of this study was to compare and analyze lower extremity kinematic differences throughout the landing phases of forward and backward jumping using single-leg and double-leg landings (FS and BS, FD and BD). Kinematic data were collected during the landing phases of FS and BS, FD and BD in 45 participants. Through statistical parametric mapping (SPM) analysis, we found that the BS showed smaller hip and knee flexion and greater vertical ground reactive force (VGRF) than the FS during 0–37.42% (p = 0.031), 16.07–32.11% (p = 0.045), and 23.03–17.32% (p = 0.041) landing phases. The BD showed smaller hip and knee flexion than the FD during 0– 20.66% (p = 0.047) and 0–100% (p < 0.001) landing phases. Most differences appeared within a time frame during the landing phase at 30–50 ms in which non-contact anterior cruciate ligament (ACL) injuries are thought to occur and are consistent with the identification of risk in biomechanical analysis. A landing strategy that consciously increases the knee and hip flexion angles during backward landing should be considered for people as a measure to avoid injury during the performance of this type of physical activity.
KW - Backward jump-landing
KW - Knee flexion
KW - Non-contact ACL injuries
KW - Statistical parametric mapping (SPM)
KW - Temporal kinematic
UR - http://www.scopus.com/inward/record.url?scp=85090796236&partnerID=8YFLogxK
U2 - 10.3390/ijerph17186669
DO - 10.3390/ijerph17186669
M3 - Journal article
C2 - 32933208
AN - SCOPUS:85090796236
SN - 1661-7827
VL - 17
SP - 1
EP - 12
JO - International Journal of Environmental Research and Public Health
JF - International Journal of Environmental Research and Public Health
IS - 18
M1 - 6669
ER -