The Drop-Jump Screening Test

Noyes, Frank R.; Barber-Westin, Sue D.; Fleckenstein, Cassie M.; Walsh, Cathy; West, John R.

doi:10.1177/0363546504266484

Cited by 279 publications

(90 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…were similar to values previously reported by other investigators [36,37] who evaluated knee injury predisposition, finding greater risk for knee injury in women when compared to their male counterparts. Previous investigators have reported that double-legged landing dynamic knee valgus measures of 4.15 cm [37] and 5 cm [36] predispose females to injuries when compared to their male counterparts. Therefore, we hypothesize that both groups exhibited landing mechanics that may predispose them to knee injuries given that our dynamic knee valgus values during the double-legged drop jump were 4.17 ± 2.32 cm and 6.24 ± 3.71 cm for the control and SG-ACLr groups, respectively.…”

Section: Discussionsupporting

confidence: 91%

Biomechanical Deficiencies in Women with Semitendinosus‐Gracilis Anterior Cruciate Ligament Reconstruction During Drop Jumps

Ortíz

Capó-Lugo

Venegas-Rios

2014

PM&R

View full text Add to dashboard Cite

Objective To compare landing mechanics and neuromuscular recruitment strategies between women with semitendinosus-gracilis anterior cruciate ligament reconstruction (SG-ACLr) and non-injured women during double and single-legged drop jumps. Design Cross-sectional biomechanical study Setting Single university-based biomechanics laboratory Participants Fourteen women 1–5 years post SG-ACLr and 16 non-injured women participated in this study. Methods After anthropometric measurements, warm-up, and familiarization procedures, participants performed five trials of a double and single-legged drop jumps. Main Outcome Measurements Dynamic knee valgus was measured as the distance between knee joints during the landing phase of the double-leg drop jumps. Medial knee displacement was the outcome considered during the landing phase of the single-leg drop jumps. For both drop jumps tasks neuromuscular recruitment was evaluated through rectified normalized electromyography (EMG) activity of the quadriceps and hamstrings (amplitude and latency), and quadriceps/hamstrings EMG co-contraction ratio. Results Although the SG- ACLr group demonstrated a tendency towards a greater dynamic knee valgus during both drop jumps, these differences did not reach statistical significance. EMG data revealed different neuromuscular strategies for each group depending on the specific jump. Conclusions These findings suggest that women with SG-ACLr have a tendency towards greater dynamic knee valgus which could predispose to additional knee injuries. Rehabilitation specialists need to be aware of existing kinematic and neuromuscular deficiencies years after SG-ACLr. Taking this into consideration will aid in prescribing appropriate interventions designed to prevent re-injury.

show abstract

Section: Discussionsupporting

confidence: 91%

Biomechanical Deficiencies in Women with Semitendinosus‐Gracilis Anterior Cruciate Ligament Reconstruction During Drop Jumps

Ortíz

Capó-Lugo

Venegas-Rios

2014

PM&R

View full text Add to dashboard Cite

show abstract

“…The analysis reports hip, knee, and ankle separation distances, along with maximum vertical jump height. Test-retest reliability for measures recorded in this manner have been reported as very high, ICC Ͼ 0.90 (20). Anthropometric data including age (years), height (cm) and mass (kg) also were collected at the time of preand posttesting.…”

Section: Methodsmentioning

confidence: 99%

The Effects of a Commercially Available Warm-Up Program on Landing Mechanics in Female Youth Soccer Players

GRANDSTRAND

Pfeiffer

Sabick

et al. 2006

Journal of Strength and Conditioning Research

View full text Add to dashboard Cite

“…McLean et al25 also indicated that being able to identify specifically at-risk individuals during their initial ground contact would allow greater opportunities to intervene with these individuals versus interventions in which some people may not need the training. In 2005, Noyes et al26 sought to develop a simple videographic test that would measure the distance between the hips, knees, and ankles in the coronal plane. They used the drop-jump screening test to assess gender and neuromuscular training differences in female athletes.…”

mentioning

confidence: 99%

Expert Versus Novice Interrater Reliability and Criterion Validity of the Landing Error Scoring System

Oñate

Cortés²,

Welch³

et al. 2010

Journal of Sport Rehabilitation

103

View full text Add to dashboard Cite

Context A clinical assessment tool that would allow for efficient large-group screening is needed to identify individuals potentially at risk for anterior cruciate ligament (ACL) injury. Objective To assess the criterion validity of a jump-landing assessment tool compared with 3-dimensional (3D) motion analysis and evaluate interrater reliability across an expert vs novice rater using the Landing Error Scoring System (LESS). Design Validity protocol. Setting Controlled, laboratory. Participants Nineteen female (age 19.58 ± .84 y, height 1.67 ± .05 m, mass 63.66 ± 10.11 kg) college soccer athletes volunteered. Main Outcome Measurement Interrater reliability between expert rater (5 y LESS experience) vs novice rater (no LESS experience). LESS scores across 13 items and total score. 3D lower extremity kinematics were reduced to dichotomous values to match LESS items. Interventions Participants performed drop-box landings from a 30-cm height with standard video-camera and 3D kinematic assessment. Results Intrarater item reliability, assessed by kappa correlation, between novice and experienced LESS raters ranged from moderate to excellent (κ = .459–.875). Overall LESS score, assessed by intraclass correlation coefficient, was excellent (ICC2,1 = .835, P < .001). Statistically significant phi correlation (P < .05) was found between rater and 3D scores for knee-valgus range of motion; however, percent agreement between expert rater and 3D scores revealed excellent agreement (range of 84–100%) for ankle flexion at initial contact, knee-flexion range of motion, trunk flexion at maximum knee flexion, and foot position at initial contact for both external and internal rotation of tibia. Moderate agreement was found between rater and 3D scores for trunk flexion at initial contact, stance width less than shoulder width, knee valgus at initial contact, and knee-valgus range of motion. Conclusions Our findings support moderate to excellent validity and excellent expert vs novice interrater reliability of the LESS to accurately assess 3D kinematic motion patterns. Future research should evaluate the efficacy of the LESS to assess individuals at risk for ACL injury.

show abstract

The Drop-Jump Screening Test

Abstract: The majority of untrained female and male athletes demonstrated a valgus alignment appearance on the video test. After neuromuscular training, female athletes had improved knee separation distances and a more neutral lower limb alignment on landing and takeoff.

Cited by 279 publications

References 27 publications

Biomechanical Deficiencies in Women with Semitendinosus‐Gracilis Anterior Cruciate Ligament Reconstruction During Drop Jumps

Biomechanical Deficiencies in Women with Semitendinosus‐Gracilis Anterior Cruciate Ligament Reconstruction During Drop Jumps

The Effects of a Commercially Available Warm-Up Program on Landing Mechanics in Female Youth Soccer Players

Expert Versus Novice Interrater Reliability and Criterion Validity of the Landing Error Scoring System

Contact Info

Product

Resources

About