One-leg hop kinematics 20years following anterior cruciate ligament rupture: Data revisited using functional data analysis

Hébert‐Losier, Kim; Pini, Alessia; Vantini, Simone; Strandberg, Johan; Abramowicz, Konrad; Schelin, Lina; Häger, Charlotte

doi:10.1016/j.clinbiomech.2015.08.010

Cited by 29 publications

(29 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comprehensive information of the execution of challenging dynamic tasks (eg, hop landings) is gained when FHA methods are combined with inferential statistical methods for functional data. Functional data analysis (FDA) methods are increasingly used in biomechanics to present and compare kinematic and kinetic curves between groups; for instance, in the motor development of the vertical jump and in ACL injured versus controls during hopping …”

Section: Introductionmentioning

confidence: 99%

Dynamic knee control and movement strategies in athletes and non‐athletes in side hops: Implications for knee injury

Markström

Grip

Schelin

et al. 2019

Scandinavian Med Sci Sports

Self Cite

View full text Add to dashboard Cite

Athletes exposed to rapid maneuvers need a high level of dynamic knee stability and robustness, while also controlling whole body movement, to decrease the risk of non‐contact knee injury. The effects of high‐level athletic training on such measures of movement control have not, however, been thoroughly evaluated. This study investigated whether elite athletes (who regularly perform knee‐specific neuromuscular training) show greater dynamic knee robustness and/or different movement strategies than non‐athletic controls, in relation to overall knee function. Thirty‐nine women (19 athletes, 20 controls) performed standardized rebound side hops (SRSH) while a motion capture system synchronized with two force plates registered three‐dimensional trunk, hip, and knee joint angles and moments. Dynamic knee robustness was evaluated using finite helical axis (FHA) inclination angles extracted from knee rotation intervals of 10°, analyzed with independent t tests. Angle and moment curves were analyzed with inferential methods for functional data. Athletes had superior knee function (less laxity, greater hop performances, and strength) but presented similar FHA inclination angles to controls. Movement strategies during the landing phase differed; athletes presented larger (a) hip flexion angles (during 9%‐29% of the phase), (b) hip adduction moments (59%‐99%), (c) hip internal rotation moments (83%‐89%), and (d) knee flexion moments (79%‐93%). Thus, elite athletes may have a greater ability than non‐athletes to keep the knee robust while performing SRSH more efficiently through increased engagement of the hip. However, dynamic knee robustness associated with lower FHA inclination angles still show room for improvement, thus possibly decreasing knee injury risk.

show abstract

Section: Introductionmentioning

confidence: 99%

Dynamic knee control and movement strategies in athletes and non‐athletes in side hops: Implications for knee injury

Markström

Grip

Schelin

et al. 2019

Scandinavian Med Sci Sports

Self Cite

View full text Add to dashboard Cite

show abstract

“…The aligned data and the landmarks are displayed in the right panel of Figure 1. For more details on data collection and preprocessing, we refer to the work of Hébert-Losier et al (2015). The hop consists of three phases: time preceding the takeoff event (takeoff phase), time between the takeoff event and the landing event (flight phase), and time succeeding the landing event (landing phase).…”

Section: Analysis Of Knee Kinematicsmentioning

confidence: 99%

“…Our primary focus is to compare (ACL R ) and (ACL PT ) individuals with healthy-knee controls (CTRL) matched with age and sex, taking individual-specific covariates into account. The three groups are only matched on group level (Hébert-Losier et al, 2015), and hence, age and sex are included as possible covariates together with available data about jump length and body mass index (BMI). The knee movement in the sagittal plane for the hop of maximal length (out of three attempts) ABRAMOWICZ ET AL.…”

Section: Analysis Of Knee Kinematicsmentioning

confidence: 99%

See 1 more Smart Citation

Nonparametric inference for functional‐on‐scalar linear models applied to knee kinematic hop data after injury of the anterior cruciate ligament

Abramowicz

Häger

Pini

et al. 2018

Scandinavian J Statistics

Self Cite

View full text Add to dashboard Cite

Motivated by the analysis of the dependence of knee movement patterns during functional tasks on subject-specific covariates, we introduce a distribution-free procedure for testing a functional-on-scalar linear model with fixed effects. The procedure does not only test the global hypothesis on the entire domain but also selects the intervals where statistically significant effects are detected. We prove that the proposed tests are provided with an asymptotic control of the intervalwise error rate, that is, the probability of falsely rejecting any interval of true null hypotheses. The procedure is applied to one-leg hop data from a study on anterior cruciate ligament injury. We compare knee kinematics of three groups of individuals (two injured groups with different treatments and one group of healthy controls), taking individual-specific covariates into account.

show abstract

“…19,22,36 A recent study has shown that ACL-reconstructed patients with low subjective knee function reduce the load of the operated leg during eccentric quadriceps activities of daily living. 5 Therefore, it is important to investigate specific movement phases in these patients.…”

mentioning

confidence: 99%

Phase-Specific Ground Reaction Force Analyses of Bilateral and Unilateral Jumps in Patients With ACL Reconstruction

Baumgart

Hoppe

Freiwald

2017

Orthopaedic Journal of Sports Medicine

View full text Add to dashboard Cite

Background:In patients who have undergone anterior cruciate ligament (ACL) reconstruction, there is a weak correlation between subjective evaluation of knee function on questionnaires and clinical or biomechanical test results.Hypothesis:Patients with lower subjective knee function will demonstrate lower ground-reaction forces (GRFs) in the operated leg and greater GRF asymmetries in both phase-specific and functional data analysis (FDA) approaches compared with patients with higher subjective knee function.Study Design:Descriptive laboratory study.Methods:The GRFs of the operated and nonoperated legs of 40 patients who previously underwent ACL reconstruction (patellar tendon) were analyzed during unilateral and bilateral countermovement jumps at a mean 2.5 years after surgery. The patients were separated into 2 groups depending on their International Knee Documentation Committee (IKDC) Subjective Form score: low IKDC and high IKDC.Results:Both phase-specific and FDA approaches showed lower GRF values in the operated compared with the nonoperated leg within the low-IKDC group during bilateral jumps. Moreover, lower GRF values were also present in the operated and nonoperated legs in the low-IKDC group compared with those of the high-IKDC group. Differences in GRFs were predominantly observed during the eccentric deceleration phase of jumping.Conclusion:Patients with previous ACL reconstruction who have limited subjective knee function have lower GRF values and greater GRF asymmetries, suggesting the use of interlimb compensation strategies.Clinical Relevance:The study results lead to a better understanding of the motor control needed during the eccentric and concentric movement phases of unilateral and bilateral jumps in patients who have undergone ACL reconstruction.

show abstract

One-leg hop kinematics 20years following anterior cruciate ligament rupture: Data revisited using functional data analysis

Cited by 29 publications

References 65 publications

Dynamic knee control and movement strategies in athletes and non‐athletes in side hops: Implications for knee injury

Dynamic knee control and movement strategies in athletes and non‐athletes in side hops: Implications for knee injury

Nonparametric inference for functional‐on‐scalar linear models applied to knee kinematic hop data after injury of the anterior cruciate ligament

Phase-Specific Ground Reaction Force Analyses of Bilateral and Unilateral Jumps in Patients With ACL Reconstruction

Contact Info

Product

Resources

About