Temporal kinematic and kinetics differences throughout different landing ways following volleyball spike shots

2021 ◽  
pp. 175433712110094
Author(s):  
Datao Xu ◽  
Jingying Lu ◽  
Julien S Baker ◽  
Gusztáv Fekete ◽  
Yaodong Gu
Keyword(s):  
Internal Rotation ◽  
Force Plate ◽  
Statistical Parametric Mapping ◽  
The Body ◽  
Lower Limbs ◽  
Abduction Angle ◽  
Lower Limb Injury ◽  
Peak Knee ◽  
Volleyball Players ◽  
Kinematics And Kinetics

Volleyball players often land on a single leg following a spike shot because of a shift in the center of gravity. This landing is one of the high-risk actions for non-contact ACL injury. The purpose of this study was to compare and analyze the discrete and temporal kinematics and kinetics associated with functional valgus collapse during volleyball in player landing phases during a single-leg landing and double-leg landing following a spike shot. Kinematics and kinetics data were collected (captured by a Vicon motion system and AMTI force plate, processed by Visual-3D software) during the single-leg and double-leg landing phases in 13 semi-professional male volleyball players. The landing phase was defined as initial ground contact (0% landing phase) to maximum knee flexion (100% landing phase). Statistical Parametric Mapping (SPM) analysis revealed that single-leg landing depicted a significantly greater knee abduction angle and hip adduction moment than double-leg landing during the 0%–68% landing phase (single-leg: 7°–16°, double-leg: 0°–9°, p < 0.001) and 18%–22% (single-leg: 0.62–0.91 Nm/kg, double-leg: 0.08–0.19 Nm/kg, p = 0.0063) landing phase, respectively. The traditional discrete analysis revealed that single-leg landing depicted a significantly greater peak knee internal rotation moment (single-leg: 1.46 ± 0.38 Nm/kg, double-leg: 0.79 ± 0.19 Nm/kg, p = 0.006) and peak hip internal rotation moment (single-leg: −2.20 ± 0.54 Nm/kg, double-leg: −0.88 ± 0.30 Nm/kg, p = 0.011) than double-leg landing. Most differences were within a time frame during the landing phase of 30–50 ms in which non-contact ACL injuries are considered to happen. These recorded time frames are consistent with biomechanical measures that are deemed dangerous. To reduce lower limb injury, a volleyball player should consciously swing the arms to influence the body to maintain a better-balanced state. Adjusting the landing mode of the lower limbs can achieve a good cushioning effect during landing following a spike shot.

scholarly journals Children’s Single-Leg Landing Movement Capability Analysis According to the Type of Sport Practiced

2020 ◽  
Vol 17 (17) ◽  
pp. 6414 ◽  
Author(s):  
Isaac Estevan ◽  
Gonzalo Monfort-Torres ◽  
Roman Farana ◽  
David Zahradnik ◽  
Daniel Jandacka ◽  
...  
Keyword(s):  
Lower Limb ◽  
Impact Force ◽  
Reaction Force ◽  
Force Plate ◽  
Statistical Parametric Mapping ◽  
Sport Performance ◽  
Joint Angles ◽  
Vertical Ground Reaction Force ◽  
Lower Limb Injury ◽  
Sport Practice

(1) Background: Understanding children’s motor patterns in landing is important not only for sport performance but also to prevent lower limb injury. The purpose of this study was to analyze children’s lower limb joint angles and impact force during single-leg landings (SLL) in different types of jumping sports using statistical parametric mapping (SPM). (2) Methods: Thirty children (53.33% girls, M = 10.16 years-old, standard deviation (SD) = 1.52) divided into three groups (gymnastics, volleyball and control) participated in the study. The participants were asked to do SLLs with the dominant lower limb (barefoot) on a force plate from a height of 25 cm. The vertical ground reaction force (GRF) and lower limb joint angles were assessed. SPM{F} one-way analysis of variance (ANOVA) and SPM{t} unpaired t-tests were performed during the landing and stability phases. (3) Results: A significant main effect was found in the landing phase of jumping sport practice in GRF and joint angles. During the stability phase, this effect was exhibited in ankle and knee joint angles. (4) Conclusions: Evidence was obtained of the influence of practicing a specific sport in childhood. Child volleyball players performed SLL with lower impact force and higher knee flexion than child gymnasts. Training in specific jumping sports (i.e., volleyball and gymnastics) could affect the individual capacity to adapt SLL execution.

scholarly journals Difference in leg asymmetry between female collegiate athletes and recreational athletes during drop vertical jump

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Yutaro Morishige ◽  
Kengo Harato ◽  
Shu Kobayashi ◽  
Yasuo Niki ◽  
Morio Matsumoto ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Collegiate Athletes ◽  
Acl Injury ◽  
Activity Level ◽  
Abduction Angle ◽  
Recreational Athletes ◽  
Increased Risk ◽  
Peak Knee ◽  
Knee Abduction ◽  
Leg Dominance

Abstract Background Neuromuscular imbalance will lead to loading asymmetry in sporting activities. This asymmetry is related to leg dominance, which has been associated with increased risk of anterior cruciate ligament (ACL) injury. Therefore, potential biomechanical differences between legs are important. However, little attention has been paid to the biomechanical details of leg dominance. The purpose of the present study was to clarify the relationship between leg dominance and knee biomechanics in females with different activity level during dynamic athletic tasks. Methods A total of 23 female collegiate (mean age = 19.6 ± 1.4 years, mean body mass index = 21.5 ± 0.9) and 19 recreational athletes (mean age = 20.7 ± 1.1 years, mean body mass index = 20.5 ± 1.7) were enrolled. Tegner activity scores of the collegiate and recreational athletes were 9 and 7, respectively. Knee kinematic and kinetic asymmetries between the dominant (DL) and non-dominant (NDL) legs during the landing phase of drop vertical jump (DVJ) were assessed using three-dimensional motion analysis in collegiate and recreational athletes separately. Statistical comparison was done using two-tailed paired t test between DL and NDL in each athlete. Results The peak knee abduction angle was significantly larger on the DL than on the NDL in collegiate athletes. Knee abduction angle at initial contact (IC), peak knee abduction angle, knee internal rotation angle at IC, and peak knee internal rotation angle were significantly larger on the NDL than on the DL in recreational athletes. Moreover, peak knee abduction moment within 40 ms from IC was larger on the NDL than on the DL in recreational athletes, while the moment was not significantly different in collegiate athletes. Conclusions From the present study, the relationship between leg dominance and knee biomechanics was totally different in females with different activity level. Specifically, asymmetry of the knee abduction angle between limbs was opposite between female recreational and collegiate athletes. According to previous literatures, abduction and internal rotation angles as well as abduction moment were key issues for mechanism of non-contact ACL injury. Therefore, the NDL in female recreational athletes was associated with increased risk of ACL injury.

Training load in direct start preparation (DSP) in sitting volleyball players

Physiotherapy ◽  
2015 ◽  
Vol 23 (4) ◽  
Author(s):  
Bartosz Bolach ◽  
Michał Stańdo ◽  
Eugeniusz Bolach
Keyword(s):  
Heart Rate ◽  
Heat Rate ◽  
The Body ◽  
Lower Limbs ◽  
Resting Heart Rate ◽  
Average Heart Rate ◽  
Physical Effort ◽  
Percentage Difference ◽  
Volleyball Players ◽  
The Disabled

Abstract: The objective of the elaboration was to assess the degree of physical load in direct start preparation (DSP) during preparations of disabled sitting volleyball players for the Polish championships.: Players of the “Start” Sports Club of the Disabled in Wroclaw who play sitting volleyball professionally participated in the study. The subjects of the study were men aged 17 to 53 (average age: 31.9); they have been playing sitting volleyball for 2.5 to 33 years. Twelve sitting volleyball players with various disabilities concerning uni- and bilateral amputation within the lower leg and thigh, with malformation and short lower limbs participated in the study.: The study involved assessment of the exercise capacity of sitting volleyball players during 7 training units in introductory and intensifying micro-cycles within DSP. Heart rate results at six moments (at the beginning, in the 10: Years of training significantly correlated with age of the participants. The participants were characterized by significantly lower resting heart rate in the intensifying micro-cycle than in the introductory microcycle which may result from adaptation of the body to physical effort. The largest differences in average heart rate values at the considered moments of training units in training micro-cycles within DSP were observed in the measurement of resting heat rate and final heart rate. Standard deviation in the introductory micro-cycle and the intensifying micro-cycle within DSP was growing in a linear manner, except for the peak heart rate index. Resting heart rate significantly impacted the value of heart rate during training units within DSP.Volleyball players participating in the study were characterized by significantly lower resting hear rate in the intensifying micro-cycle than in the introductory micro-cycle within DSP which may result from adaptation of the body to physical effort. The lowest percentage difference of the average heart rate value occurred in the assessment of final heart rate, while at the remaining moments of training units heart rate values reached the same percentage value. The course of regeneration in both compared micro-cycles (DSP) was similar and it did not vary significantly. Restoring the value of resting heart rate occurred after more than 15 minutes after training.

scholarly journals Biomechanical Features of Drop Vertical Jump Are Different Among Various Sporting Activities

2021 ◽  
Author(s):  
Kengo Harato ◽  
Yutaro Morishige ◽  
Shu Kobayashi ◽  
Yasuo Niki ◽  
Takeo Nagura
Keyword(s):  
Female Athletes ◽  
Vertical Jump ◽  
Three Dimensional ◽  
Acl Injury ◽  
Soccer Players ◽  
Abduction Angle ◽  
Peak Knee ◽  
Volleyball Players ◽  
Knee Abduction ◽  
Sporting Activities

Abstract Background: Risk for non-contact anterior cruciate ligament (ACL) injury can be assessed based on drop vertical jump (DVJ). However, biomechanics of DVJ should differ with type of various sporting activities. The purpose of the present study was to clarify whether biomechanical features of DVJ are different among various sporting activities in female athletes.Methods: A total of 42 female athletes, including 25 basketball, 8 soccer and 9 volleyball players, participated in the current investigation. DVJ was done for each female athlete using a three-dimensional motion analysis system which consisted of six cameras, two force plates and 46 retro-reflective markers. Kinematic and kinetic data were recorded for both limbs in each athlete. Simultaneously, frontal and sagittal plane views of the DVJ were recorded using high-resolution two different video cameras to evaluate Landing Error Scoring System (LESS) score. Three-dimensional biomechanical parameters at the knee joint and LESS were compared among three different sporting activities.Results: Soccer players had better LESS score, compared to basketball players, while no significantly differences were found between basketball and volleyball players in LESS. In addition, peak knee flexion angle was significantly larger, and knee abduction angle at initial contact (IC), peak knee abduction angle, knee internal rotation angle, and knee abduction moment within 40 milliseconds from IC were significantly smaller in soccer players, compared to basketball players. There were no significantly differences between basketball and volleyball players in all biomechanical parameters.Conclusions: From the present study, female basketball and volleyball players have worse LESS score, greater knee abduction angle and moment, compared to female soccer players. Thus, female basketball and volleyball players are likely to have the increased risk of non-contact ACL injury during DVJ, compared to soccer players. DVJ may be useless as a screening tool of non-contact ACL injury for soccer players. Biomechanics of DVJ depends on characteristics of the athlete's primary sport.

Effect of Sex and Ankle Brace Design on Knee Biomechanics During a Single-Leg Cut

2020 ◽  
Vol 48 (6) ◽  
pp. 1496-1504
Author(s):  
Wyatt D. Ihmels ◽  
Kayla D. Seymore ◽  
Tyler N. Brown
Keyword(s):  
Internal Rotation ◽  
Repeated Measures ◽  
Injury Risk ◽  
Abduction Angle ◽  
Knee Biomechanics ◽  
Ankle Inversion ◽  
Ankle Brace ◽  
Peak Knee ◽  
Knee Abduction ◽  
And Control

Background: Despite success at preventing ankle sprain, prophylactics that restrict ankle plantarflexion motion may produce deleterious knee biomechanics and increase injury risk. Purpose: To determine if ankle prophylactics that restrict plantar- and dorsiflexion motion produce changes in knee biomechanics during a single-leg cut and whether those changes differ between sexes. Study Design: Controlled laboratory study. Methods: A total of 17 male and 17 female participants performed a single-leg cut with 4 conditions: Ankle Roll Guard (ARG), lace-up brace, nonelastic tape, and an unbraced control. Peak stance knee flexion, abduction, and internal rotation joint angle and moment; total knee reaction moment (TKM) and its components (sagittal, frontal, and transverse); and ankle plantarflexion and inversion range of motion (ROM) and peak stance joint moments were tested with a repeated measures analysis of variance to determine the main effect and interaction of condition and sex. Results: Brace and tape restricted plantarflexion ROM as compared with ARG and control (all P < .001). With the brace, women had increased peak knee abduction angle versus ARG ( P = .012) and control ( P = .009), and men had decreased peak knee internal rotation moment as compared with ARG ( P = .032), control ( P = .006), and tape ( P = .003). Although the restrictive tape decreased inversion ROM when compared with ARG ( P = .004) and brace ( P = .017), it did not change knee biomechanics. Neither brace nor tape produced significant changes in TKM or components, yet sagittal TKM increased with ARG versus control ( P = .016). Women exhibited less ankle inversion ROM ( P = .003) and moment ( P = .049) than men, while men exhibited significantly greater frontal TKM ( P = .022) and knee internal rotation moment with the ARG ( P = .029), control ( P = .007), and tape ( P = .016). Conclusion: Prophylactics that restrict ankle plantarflexion motion may elicit knee biomechanical changes during a single-leg cut, but these changes may depend on prophylactic design and user’s sex and may increase women’s injury risk. Clinical Relevance: Sex-specific ankle prophylactic designs may be warranted to reduce knee injury during sports.

scholarly journals Knee Joint Kinematics and Kinetics During a Lateral False-Step Maneuver

2009 ◽  
Vol 44 (5) ◽  
pp. 503-510 ◽  
Author(s):  
Grace M. Golden ◽  
Michael J. Pavol ◽  
Mark A. Hoffman
Keyword(s):  
Internal Rotation ◽  
External Rotation ◽  
Cruciate Ligament ◽  
Body Height ◽  
Knee Kinematics ◽  
Single Step ◽  
Peak Knee ◽  
Flexion Extension ◽  
Internal Rotation Angle ◽  
Kinematics And Kinetics

Abstract Context: Cutting maneuvers have been implicated as a mechanism of noncontact anterior cruciate ligament (ACL) injuries in collegiate female basketball players. Objective: To investigate knee kinematics and kinetics during running when the width of a single step, relative to the path of travel, was manipulated, a lateral false-step maneuver. Design: Crossover design. Setting: University biomechanics laboratory. Patients or Other Participants: Thirteen female collegiate basketball athletes (age  =  19.7 ± 1.1 years, height  =  172.3 ± 8.3 cm, mass  =  71.8 ± 8.7 kg). Intervention(s): Three conditions: normal straight-ahead running, lateral false step of width 20% of body height, and lateral false step of width 35% of body height. Main Outcome Measure(s): Peak angles and internal moments for knee flexion, extension, abduction, adduction, internal rotation, and external rotation. Results: Differences were noted among conditions in peak knee angles (flexion [P &lt; .01], extension [P  =  .02], abduction [P &lt; .01], and internal rotation [P &lt; .01]) and peak internal knee moments (abduction [P &lt; .01], adduction [P &lt; .01], and internal rotation [P  =  .03]). The lateral false step of width 35% of body height was associated with larger peak flexion, abduction, and internal rotation angles and larger peak abduction, adduction, and internal rotation moments than normal running. Peak flexion and internal rotation angles were also larger for the lateral false step of width 20% of body height than for normal running, whereas peak extension angle was smaller. Peak internal rotation angle increased progressively with increasing step width. Conclusions: Performing a lateral false-step maneuver resulted in changes in knee kinematics and kinetics compared with normal running. The differences observed for lateral false steps were consistent with proposed mechanisms of ACL loading, suggesting that lateral false steps represent a hitherto neglected mechanism of noncontact ACL injury.

Free vertical moments and transverse forces in human walking and their role in relation to arm-swing

2001 ◽  
Vol 204 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Y. Li ◽  
W. Wang ◽  
R.H. Crompton ◽  
M.M. Gunther
Keyword(s):  
Force Plate ◽  
Transverse Force ◽  
The Body ◽  
Lower Limbs ◽  
Heel Strike ◽  
Adult Males ◽  
Arm Swing ◽  
Free Moments ◽  
Deceleration Phase ◽  
Normal Speed

We present force plate data on vertical free moments (force couples in the horizontal plane between the foot and the ground) and on transverse force during unloaded walking in different modes and at different speeds (including running) by adults of both sexes and by children, and examine loaded walking by adult males and one boy. Free moments in slow and normal-speed walking are characterised by a lateral peak in the accelerative phase of stance, but the peak during running, and in some cases of fast walking, occurs in the deceleration phase. Free moments are strongly affected by arm fixation in males, but less so in females. The pattern, but not the scale, of free moments is affected by loading position and side, but load magnitude has little effect if the loaded weight is treated as part of the body. Transverse force is more variable than sagittal force. In males, the transverse force curve shows a marked trough at mid-stance, whereas in females this trough is rarely seen. The transverse force of males also differs from that of females in response to arm fixation, showing a local medial inflection at three-quarters of the stance phase that is not present in females. Adults differ from children younger than 9 years in the presence of a very short, medially directed peak following heel-strike. Analysis of the effects of arm fixation and the timing of forces suggests strongly that arm-swing and free moments tend to reinforce each other in balancing trunk torques induced by the lower limbs. Both are of reduced importance in slow walking.

scholarly journals Total Body Water (TBW) Percentage and 3rd Space Water Were Risk Factors for Recruit Injuries in Lower Limbs: A Case-Control Study

2020 ◽  
Author(s):  
Junjie Ouyang ◽  
Jing Yang ◽  
Wanling Jiang ◽  
Bing Li ◽  
Kexing Jin ◽  
...  
Keyword(s):  
Risk Factors ◽  
Body Composition ◽  
Lower Limb ◽  
Multivariate Logistic Regression Analysis ◽  
The Body ◽  
Lower Limbs ◽  
Multivariate Logistic Regression ◽  
Lower Limb Injury ◽  
Limb Injury ◽  
Injury Group

Abstract Background: Recruit training injuries have caused serious problems for troop training and medical support. The lower limbs is the site where recruit injuries occur the most. Bio-impedance (BIA) measures body composition quickly and accurately. Our aim was to identify the risk factors for lower limbs training injuries to recruits due to body composition.Methods: A total of 282 recruits were included. Before training, use BodyStat QuadScan 4000 multifrequency BIA system to measure the body composition of recruits. After training, they were divided into two groups according to the occurrence of lower limb training injuries. The basic characteristics of the two recruits were compared by Wilcoxon rank sum test. Receiver operator characteristic (ROC) curves was performed on the indicators with statistical difference between the two groups to find the cutoff point. Finally, multivariate logistic regression analysis was used to find the risk factors of lower limb training injuries.Results: Compared with the lower limb uninjured group, the lean mass percentage (P = 0.003), TBW percentage (P = 0.010), extracellular water (ECW) percentage (P = 0.023), intracellular water(ICW) percentage (P = 0.027), 3rd space water (P = 0.021) and basal metabolic rate(BMR)/total weight (P = 0.014) of the lower limb injury group was higher. On the contrary, the body fat percentage (P = 0.003) and body fat mass index (BFMI) (P = 0.005) of the lower limb injury group was lower. The results of multivariate logistic regression analysis showed that TBW percentage > 65.350% (P = 0.050, OR=2.085) and 3rd space water >0.950 (P = 0.045, OR=2.342) were independent risk factors for lower limb injuries.Conclusions: TBW percentage> 65.35% and 3rd space water >0.950 were independent risk of lower limb training injuries. These recruits need to be paid more attention during training.

Hip Taping Positively Alters Running Kinematics in Asymptomatic Females

2018 ◽  
Vol 39 (14) ◽  
pp. 1068-1074
Author(s):  
Ashleigh Masters ◽  
Kevin Netto ◽  
Susi Brooker ◽  
Diana Hopper ◽  
Bernard Liew
Keyword(s):  
Internal Rotation ◽  
Stance Phase ◽  
Three Dimensional ◽  
Statistical Parametric Mapping ◽  
Knee Kinematics ◽  
Knee Valgus ◽  
Peak Knee ◽  
Running Injuries ◽  
Hip Motion ◽  
Post Hoc

AbstractGreater functional knee valgus (FKV) is thought to contribute to a greater risk of sustaining overuse running injuries. The hip is commonly implicated in greater functional knee valgus, but no studies have investigated the effects of hip taping on running kinematics. The present study investigated whether or not hip taping altered hip and knee kinematics compared to sham and no taping in female runners demonstrating excessive functional knee valgus. Lower limb stance-phase kinematics were collected from 23 female runners using three-dimensional motion capture. Participants performed over ground running at 3.5 m/s and 5.0 m/s. Three taping conditions (no tape; sham tape; hip tape) were tested. Statistical inference was performed using Statistical Parametric Mapping Hotelling’s paired t-tests, with post-hoc paired t-tests. Hip taping significantly decreased hip adduction and internal rotation angles throughout stance phase by up to 7°, compared to sham and no taping. Hip taping significantly increased knee adduction, internal rotation, flexion, and reduced peak knee flexion angles, compared to no tape. Hip taping reduced excessive hip motion by clinically meaningful magnitudes, and also benefited knee frontal and transverse plane kinematics at the slower running speed. Hip taping may provide an immediate solution in correcting FKV in running.

Association of Navicular Drop and Selected Lower-Limb Biomechanical Measures During the Stance Phase of Running

2014 ◽  
Vol 30 (2) ◽  
pp. 250-254 ◽  
Author(s):  
Mansour Eslami ◽  
Mohsen Damavandi ◽  
Reed Ferber
Keyword(s):  
Internal Rotation ◽  
Stance Phase ◽  
Force Plate ◽  
Knee Adduction Moment ◽  
Tibial Rotation ◽  
Tibial Internal Rotation ◽  
Ankle Inversion ◽  
Navicular Drop ◽  
Peak Knee ◽  
Rearfoot Eversion

There is evidence to suggest that navicular drop measures are associated with specific lower-extremity gait biomechanical parameters. The aim of this study was to examine the relationship between navicular drop and a) rearfoot eversion excursion, b) tibial internal rotation excursion, c) peak ankle inversion moment, and d) peak knee adduction moment during the stance phase of running. Sixteen able-bodied men having an average age of 28.1 (SD = 5.30) years, weight of 81.5 (SD = 10.40) kg, height of 179.1 (SD = 5.42) cm volunteered and ran barefoot at 170 steps/minute over a force plate. Navicular drop measures were negatively correlated with tibial internal rotation excursion (r= −0.53,P= .01) but not with rearfoot eversion excursion (r= −0.19;P= .23). Significant positive correlations were found between navicular drop and peak knee adduction moment (r= .62,P< .01) and peak ankle inversion moment (r= .60,P< .01). These findings suggest that a low navicular drop measure could be associated with increasing tibial rotation excursion while high navicular drop measure could be associated with increased peak ankle and knee joint moments. These findings indicate that measures of navicular drop explained between 28% and 38% of the variability for measures of tibial internal rotation excursion, peak knee adduction moment and peak ankle inversion moments.

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