ArticleJournal of athletic training2020
Lower Extremity Biomechanics During a Drop-Vertical Jump and Muscle Strength in Women With Patellofemoral Pain.
Article in Journal of athletic training, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.
- There is more to the knee joint than just the quadriceps: A systematic review with meta-analysis and evidence gap map of hamstring strength, flexibility, and morphology in individuals with gradual-onset knee disorders.Journal of sport and health science · 2024Pooled it
- Trunk Biomechanics in Individuals with Knee Disorders: A Systematic Review with Evidence Gap Map and Meta-analysis.Sports medicine - open · 2022Pooled it
- Patellofemoral Joint Anatomy Is Associated With Landing Mechanics After Operative Treatment for Patellar Instability.Orthopaedic journal of sports medicine · 2025Article
- Association among isometric hip strength, hip joint stiffness, and dynamic Knee Valgus in jump-landing tasks.Scientific reports · 2025Article
- Does joint hypermobility exacerbate altered landing and jumping strategies in adolescents with fibromyalgia syndrome compared to controls?Clinical biomechanics (Bristol, Avon) · 2025Article
- Individuals with patellofemoral pain have impaired self-reported and performance-based function: Systematic review with meta-analysis and meta-regression.Journal of athletic training · 2024Article
- Preseason lower extremity range of motion, flexibility, and strength in relation to in-season injuries in NCAA division I gymnasts.The Physician and sportsmedicine · 2024Article
- Analysis of lower limb muscle strength characteristics of amateur runners with patellofemoral pain: A cross-sectional study.PloS one · 2024Article
- Limb dominance influences landing mechanics and neuromuscular control during drop vertical jump in patients with ACL reconstruction.Frontiers in physiology · 2024Article
- Females with hip-related pain demonstrate reduced kinetics at the hip and ankle during terminal stance of gait.Gait & posture · 2023Observational
- Influence of Severity and Duration of Anterior Knee Pain on Quadriceps Function and Self-Reported Function.Journal of athletic training · 2022Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
contextPatellofemoral pain (PFP) is one of the most prevalent knee conditions observed in women. Current research suggests that individuals with PFP have altered muscle activity, kinematics, and kinetics during functional tasks. However, few authors have examined differences in lower extremity biomechanics in this population during the drop-vertical jump (DVJ).
objectiveTo determine how lower extremity electromyography, kinematics, and kinetics during a DVJ and lower extremity isometric strength differed between women with and those without PFP.
designCross-sectional study.
settingLaboratory. PATIENTS OR OTHER
participantsFifteen healthy women (age = 20.23 ± 1.39 years, height = 169.32 ± 5.38 cm, mass = 67.73 ± 9.57 kg) and 15 women with PFP (age = 22.33 ± 3.49 years, height = 166.42 ± 6.01 cm, mass = 65.67 ± 13.75 kg). INTERVENTION(S): Three trials of a DVJ. MAIN OUTCOME MEASURE(S): Surface electromyography, kinematics, and kinetics were collected simultaneously during a DVJ. Lower extremity strength was measured isometrically. Independent-samples t tests were performed to assess group differences.
resultsNormalized muscle activity in the vastus medialis (healthy group = 120.84 ± 80.73, PFP group = 235.84 ± 152.29), gluteus maximus (healthy group = 43.81 ± 65.63, PFP group = 13.37 ± 13.55), and biceps femoris (healthy group = 36.68 ± 62.71, PFP group = 11.04 ± 8.9) during the landing phase of the DVJ differed between groups. Compared with healthy women, those with PFP completed the DVJ with greater hip internal-rotation moment (0.04 ± 0.28 N/kg versus 0.06 ± 0.14 N/kg, respectively) and had decreased knee-flexion excursion (76.76° ± 7.50° versus PFP = 74.14° ± 19.85°, respectively); they took less time to reach peak trunk flexion (0.19 ± 0.01 seconds versus 0.19 ± 0.02 seconds, respectively) and lateral trunk flexion (0.12 ± 0.07 seconds versus 0.11 ± 0.04 seconds, respectively).
conclusionsDuring the DVJ, women with PFP had increased hip internal-rotation moment and decreased knee-flexion excursion with less time to peak trunk flexion and lateral flexion. Muscle activation was increased in the vastus medialis but decreased in the gluteus maximus and biceps femoris. This suggests that altered motor-unit recruitment in the hip and thigh may result in changes in biomechanics during a DVJ that are often associated with an increased risk of injury.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.