muscles. 1 – 5 The premise supporting these risk factors is that impaired hip muscle function may lead to excessive hip adduction and medial rotation during lower-extremity weight-bearing tasks, 6 – 10 leading to altered forces at the hip or knee that increase injury risk. 11 – 13 Neuromuscular control
Search Results
Coupled Gluteus Maximus and Gluteus Medius Recruitment Patterns Modulate Hip Adduction Variability During Single-Limb Step-Downs: A Cross-Sectional Study
John H. Hollman, Nicholas J. Beise, Michelle L. Fischer, and Taylor L. Stecklein
Hip Adduction Does not Affect VMO EMG Amplitude or VMO:VL Ratios during a Dynamic Squat Exercise
Michelle Boling, Darin Padua, J. Troy Blackburn, Meredith Petschauer, and Christopher Hirth
Context:
Clinicians commonly attempt to facilitate vastus medialis oblique (VMO) activity by instructing patients to squeeze a ball between their knees during squatting exercises.
Objective:
To determine whether VMO activation amplitude and the VMO to vastus lateralis (VL) activation ratio (VMO:VL) were altered when performing active hip adduction during a dynamic squat exercise.
Design:
Single test session.
Participants:
Fifteen healthy subjects, with no history of knee pain, volunteered for this study.
Intervention:
Surface EMG of the VMO, VL, and hip adductor (ADD) muscles were recorded while subjects performed 10 consecutive squats against their body weight through a range of 0° to 90° of knee flexion. Subjects performed the squat exercises during two different conditions: (1) active hip adduction and (2) no hip adduction.
Main Outcome Measures:
Average VMO EMG amplitude and VMO:VL ratio were determined during the knee flexion (0° to 90°) and knee extension (90° to 0°) phases of the squat exercise.
Results:
Active hip adduction did not significantly change VMO amplitude or VMO:VL ratio during the knee flexion or knee extension phases of the dynamic squat exercise.
Conclusions:
Based on these results, we conclude that VMO amplitude and the VMO: VL ratio are not influenced by performing active hip adduction during a dynamic squat exercise in healthy subjects.
Sex-Specific Relationships Between Hip Strength and Hip, Pelvis, and Trunk Kinematics in Healthy Runners
James J. Hannigan, Louis R. Osternig, and Li-Shan Chou
alter hip and pelvis kinematics during running, 12 , 17 , 18 possibly even increasing hip adduction range of motion. 16 Thus, decreased pain after rehabilitation does not appear to be a result of changing hip kinematics during running. To better understand these findings, some studies have attempted
Comparison of Frontal and Transverse Plane Kinematics Related to Knee Injury in Novice Versus Experienced Female Runners
Kathryn Harrison, Adam Sima, Ronald Zernicke, Benjamin J. Darter, Mary Shall, D.S. Blaise Williams III, and Sheryl Finucane
participation in the sport. 5 , 10 Biomechanics during running have also been associated with the risk of running-related injury. Greater peak hip adduction was prospectively observed in female runners who later experienced patellofemoral pain syndrome (PFPS) 11 and iliotibial band syndrome (ITBS) 12
Rapid Spike in Hip Adduction Strength in Early Adolescent Footballers: A Study of 125 Elite Male Players From Youth to Senior
Neil Light, Kristian Thorborg, Kasper Krommes, Mathias F. Nielsen, Kasper B. Thornton, Per Hölmich, Juan J.J. Penalver, and Lasse Ishøi
Setting All data were collected at the facilities of a professional 1st tier football club (Danish Premier League) in January 2019. Data were collected within the first 2 weeks of preseason following a 3-week off-season winter break. Testing of hip adduction and abduction strength was performed as part of
Relationship Between Hip Frontal Dynamic Joint Stiffness and Frontal and Transverse Plane Hip Kinematics During Gait: Sex Differences
Shogo Takano, Yoshitaka Iwamoto, Junya Ozawa, and Nobuhiro Kito
kinematics in the frontal and transverse planes. 5 – 9 Healthy women show greater hip adduction and internal rotation during gait, running, and single-leg squats than healthy men. 5 – 9 Greater hip adduction and internal rotation are kinematic features of patients with PFP. 10 Biomechanical studies using
Countermovement Jump and Isometric Strength Test–Retest Reliability in English Premier League Academy Football Players
Matthew Springham, Nav Singh, Perry Stewart, Jordan Matthews, Ian Jones, Charlie Norton-Sherwood, Dominic May, Jamie Salter, Anthony J. Strudwick, and Joseph W. Shaw
knees positioned centrally and perpendicular to the lateral sensor pads in the force frame. For both tests, players were instructed to push maximally (“inwards” for hip adduction and “outwards” for hip abduction) for 3 seconds while keeping their buttocks, hips, and head in contact with the ground and
Effective Stretching Positions of the Piriformis Muscle Evaluated Using Shear Wave Elastography
Hikari Itsuda, Masahide Yagi, Ko Yanase, Jun Umehara, Hiyu Mukai, and Noriaki Ichihashi
were tested with maximum IR at 0°, 20°, and 40° hip adductions in 90° hip flexion. Nine out of the 12 positions were tested with maximal ER at positions combined with 3 hip-flexion angles (70°, 90°, and 110°) and 3 hip-adduction angles (0°, 20°, and 40°). After defining the hip-flexion and adduction
Association of Proximal and Distal Factors With Lower Limb Kinematics During a Classical Ballet Jump
Anelise Moreti Cabral, Adalberto Felipe Martinez, Vitor Leme, Bruna Calazans Luz, and Fábio Viadanna Serrão
and ACL rupture 18 in women. The dynamic lower limb valgus is a combination of hip internal rotation and knee external rotation movements in the transverse plane and hip adduction and knee abduction movements in the frontal plane. 19 Besides increasing the stress on the ACL, 18 excessive dynamic
Relationship Between Age and Running Kinematics in Female Recreational Runners
Heather M. Hamilton and Rumit Singh Kakar
with loading scores >.4 included ankle frontal plane angle at IC, peak ankle eversion, peak hip adduction, FCA, peak knee flexion, knee flexion at IC, hip adduction at IC, peak dorsiflexion, and sagittal plane ankle angle at IC (Table 3 ). These outcome variables were used in individual multiple
