Coupled Gluteus Maximus and Gluteus Medius Recruitment Patterns Modulate Hip Adduction Variability During Single-Limb Step-Downs: A Cross-Sectional Study

2020 ◽  
pp. 1-6
Author(s):  
John H. Hollman ◽  
Nicholas J. Beise ◽  
Michelle L. Fischer ◽  
Taylor L. Stecklein
Keyword(s):  
Lower Extremity ◽  
Gluteus Maximus ◽  
Neuromuscular Control ◽  
Gluteus Medius ◽  
Cross Sectional Study ◽  
Muscle Recruitment ◽  
Movement Variability ◽  
Cross Sectional ◽  
Recruitment Patterns ◽  
Hip Extension

Context: Examining the coordinated coupling of muscle recruitment patterns may provide insight into movement variability in sport-related tasks. Objective: The purpose of this study was to examine the relationship between coupled gluteus maximus and medius recruitment patterns and hip-adduction variability during single-limb step-downs. Design: Cross-sectional. Setting: Biomechanics laboratory. Participants: Forty healthy adults, including 26 women and 14 men, mean age 23.8 (1.6) years, mean body mass index 24.2 (3.1) kg/m2, participated. Interventions: Lower-extremity kinematics were acquired during 20 single-limb step-downs from a 19-cm step height. Electromyography (EMG) signals were captured with surface electrodes. Isometric hip-extension strength was obtained. Main Outcome Measures: Hip-adduction variability, measured as the SD of peak hip adduction across 20 repetitions of the step-down task, was measured. The mean amplitudes of gluteus maximus and gluteus medius EMG recruitment were examined. Determinism and entropy of the coupled EMG signals were computed with cross-recurrence quantification analyses. Results: Hip-adduction variability correlated inversely with determinism (r = −.453, P = .018) and positively with entropy (r = .409, P = .034) in coupled gluteus maximus/medius recruitment patterns but not with hip-extensor strength nor with magnitudes of mean gluteus maximus or medius recruitment (r = −.003, .081, and .035; P = .990, .688, and .864, respectively). Conclusion: Hip-adduction variability during single-limb step-downs correlated more strongly with measures of coupled gluteus maximus and medius recruitment patterns than with hip-extensor strength or magnitudes of muscle recruitment. Examining coupled recruitment patterns may provide an alternative understanding of the extent to which hip neuromuscular control modulates lower-extremity kinematics beyond examining muscle strength or EMG recruitment magnitudes.

scholarly journals Association of Quadriceps and Hamstrings Cocontraction Patterns With Knee Joint Loading

2009 ◽  
Vol 44 (3) ◽  
pp. 256-263 ◽  
Author(s):  
Riann M. Palmieri-Smith ◽  
Scott G. McLean ◽  
James A. Ashton-Miller ◽  
Edward M. Wojtys
Keyword(s):  
Lower Extremity ◽  
Injury Risk ◽  
Female Athletes ◽  
Vastus Lateralis ◽  
Cruciate Ligament ◽  
Neuromuscular Control ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Peak Knee ◽  
Knee Abduction

Abstract Context: Sex differences in neuromuscular control of the lower extremity have been identified as a potential cause for the greater incidence of anterior cruciate ligament (ACL) injuries in female athletes compared with male athletes. Women tend to land in greater knee valgus with higher abduction loads than men. Because knee abduction loads increase ACL strain, the inability to minimize these loads may lead to ACL failure. Objective: To investigate the activation patterns of the quadriceps and hamstrings muscles with respect to the peak knee abduction moment. Design: Cross-sectional study. Setting: Neuromuscular research laboratory. Patients or Other Participants: Twenty-one recreationally active adults (11 women, 10 men). Main Outcome Measure(s): Volunteers performed 3 trials of a 100-cm forward hop. During the hop task, we recorded surface electromyographic data from the medial and lateral hamstrings and quadriceps and recorded lower extremity kinematics and kinetics. Lateral and medial quadriceps-to-hamstrings (Q∶H) cocontraction indices, the ratio of medial-to-lateral Q∶H cocontraction, normalized root mean square electromyographic data for medial and lateral quadriceps and hamstrings, and peak knee abduction moment were calculated and used in data analyses. Results: Overall cocontraction was lower in women than in men, whereas activation was lower in the medial than in the lateral musculature in both sexes (P < .05). The medial Q∶H cocontraction index (R2  =  0.792) accounted for a significant portion of the variance in the peak knee abduction moment in women (P  =  .001). Women demonstrated less activation in the vastus medialis than in the vastus lateralis (P  =  .49) and less activation in the medial hamstrings than in the lateral hamstrings (P  =  .01). Conclusions: Medial-to-lateral Q∶H cocontraction appears to be unbalanced in women, which may limit their ability to resist abduction loads. Because higher abduction loads increase strain on the ACL, restoring medial-to-lateral Q∶H cocontraction balance in women may help reduce ACL injury risk.

scholarly journals Electromyographic Analysis of the Hip Extension Pattern in Visually Impaired Athletes

2015 ◽  
Vol 48 (1) ◽  
pp. 53-61
Author(s):  
Tomasz Halski ◽  
Piotr Żmijewski ◽  
Paweł Cięszczyk ◽  
Barbara Nowak ◽  
Kuba Ptaszkowski ◽  
...  
Keyword(s):  
Visually Impaired ◽  
Body Height ◽  
Gluteus Maximus ◽  
Muscle Recruitment ◽  
Cross Sectional ◽  
Significant Difference ◽  
Young Subjects ◽  
Electromyographic Analysis ◽  
Hip Extension ◽  
Semg Activity

Abstract The objective of the study was to determine the order of muscle recruitment during the active hip joint extension in particular positions in young visually impaired athletes. The average recruitment time (ART) of the gluteus maximus (GM) and the hamstring muscle group (HMG) was assessed by the means of surface electromyography (sEMG). The sequence of muscle recruitment in the female and male group was also taken into consideration. This study followed a prospective, cross – sectional, randomised design, where 76 visually impaired athletes between the age of 18–25 years were enrolled into the research and selected on chosen inclusion and exclusion criteria. Finally, 64 young subjects (32 men and 32 women) were included in the study (age: 21.1 ± 1.05 years; body mass: 68.4 ± 12.4 kg; body height: 1.74 ± 0.09 m; BMI: 22.20 ± 2.25 kg/m2). All subjects were analysed for the ART of the GM and HMG during the active hip extension performed in two different positions, as well as resting and functional sEMG activity of each muscle. Between gender differences were comprised and the correlations between the ART of the GM and HMG with their functional sEMG activity during hip extension in both positions were shown. No significant differences between the ART of the GM and HMG were found (p>0.05). Furthermore, there was no significant difference of ART among both tested positions, as well in male as female subjects (p>0.05).

Muscle Activation Levels of the Gluteus Maximus and Medius During Standing Hip-Joint-Strengthening Exercises Using Elastic-Tubing Resistance

2014 ◽  
Vol 23 (1) ◽  
pp. 1-11 ◽  
Author(s):  
James W. Youdas ◽  
Kady E. Adams ◽  
John E. Bertucci ◽  
Koel J. Brooks ◽  
Meghan M. Nelson ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Outcome Measures ◽  
Hip Joint ◽  
Repeated Measures ◽  
Muscle Activation ◽  
Gluteus Maximus ◽  
Gluteus Medius ◽  
Muscle Recruitment ◽  
Gluteus Medius Muscle ◽  
The Cross

Context:No published studies have compared muscle activation levels simultaneously for the gluteus maximus and medius muscles of stance and moving limbs during standing hip-joint strengthening while using elastic-tubing resistance.Objective:To quantify activation levels bilaterally of the gluteus maximus and medius during resisted lower-extremity standing exercises using elastic tubing for the cross-over, reverse cross-over, front-pull, and back-pull exercise conditions.Design:Repeated measures.Setting:Laboratory.Participants:26 active and healthy people, 13 men (25 ± 3 y) and 13 women (24 ± 1 y).Intervention:Subjects completed 3 consecutive repetitions of lower-extremity exercises in random order.Main Outcome Measures:Surface electromyographic (EMG) signals were normalized to peak activity in the maximum voluntary isometric contraction (MVIC) trial and expressed as a percentage. Magnitudes of EMG recruitment were analyzed with a 2 × 4 repeated-measures ANOVA for each muscle (α = .05).Results:For the gluteus maximus an interaction between exercise and limb factor was significant (F3,75 = 21.5; P < .001). The moving-limb gluteus maximus was activated more than the stance limb's during the back-pull exercise (P < .001), and moving-limb gluteus maximus muscle recruitment was greater for the back-pull exercise than for the cross-over, reverse cross-over, and front-pull exercises (P < .001). For the gluteus medius an interaction between exercise and limb factor was significant (F3,75 = 3.7; P < .03). Gluteus medius muscle recruitment (% MVIC) was greater in the stance limb than moving limb when performing the front-pull exercise (P < .001). Moving-limb gluteus medius muscle recruitment was greater for the reverse cross-over exercise than for the cross-over, front-pull, and back-pull exercises (P < .001).Conclusions:From a clinical standpoint there is no therapeutic benefit to selectively activate the gluteus maximus and gluteus medius muscles on the stance limb by resisting sagittal- and frontal-plane hip movements on the moving limb using resistance supplied by elastic tubing.

scholarly journals Overflow of Muscle Activation by Proprioceptive Neuromuscular Facilitation in Standing Position: A Cross-Sectional Electromyographic Investigation in Healthy Individuals

2020 ◽  
Author(s):  
Luciane Aparecida Pascucci Sande de Souza ◽  
Monica B. Curtarelli ◽  
Cyntia Rogean de Jesus Alves de Baptista ◽  
Valdeci Carlos Dionisio
Keyword(s):  
Clinical Relevance ◽  
Muscle Activation ◽  
Gluteus Maximus ◽  
Gluteus Medius ◽  
Standing Position ◽  
Cross Sectional Study ◽  
Healthy Individuals ◽  
Cross Sectional ◽  
Proprioceptive Neuromuscular Facilitation ◽  
The Right

Abstract Background Although in several studies has been observed the principle of overflow of muscle activation, no one explored if this principle occurs in a standing position. This study aimed to investigate the occurrence and the condition of the overflow from upper limb migrating to inferior contralateral supported limb in standing position in healthy subjects.Methods Cross-sectional study with one sample. Eleven healthy individuals with a mean age of 22 (± 5.6) years were evaluated during 5 tasks applying the proprioceptive neuromuscular facilitation in left side 1) rest, 2) active diagonal primitive3) isotonic resistive diagonal primitive, 4) isometric resistive diagonal primitive, 5) active primitive diagonal with active extension of the right lower limb. The right side was monitored by electromyography activity of the tibial anterior, soleus, vastus medial oblique, rectus abdominis, tensor fasciae latae, gluteus maximus, gluteus medius, adductor longus muscles.Results Results showed a difference between tasks for soleus muscle (p < 0.001), with higher clinical relevance (d = 0.87), and the task with diagonal primitive against isotonic resistance produced more electromyography activity (p < 0.001). For all muscles there was a clinical relevance (d > 0.55). Conclusion The approach used in this study could improve the condition of distal muscles, mainly soleus, facilitating the acquisition of a standing position as soon as possible.

Zusammenhang zwischen eingeschränkter Hüftextension und Sitzen/Aktivitätslevel

2021 ◽  
Vol 25 (02) ◽  
pp. 57-57
Author(s):  
Sebastian Klien
Keyword(s):  
Physical Inactivity ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Prolonged Sitting ◽  
Hip Extension

Boukabache A, Brookes N, Preece SJ. Prolonged Sitting and Physical Inactivity are Associated with Limited Hip Extension: a Cross-sectional Study. Musculoskelet Sci Pract 2020; 51: 102282. doi:10.1016/j.msksp.2020.102282

scholarly journals Comparison of gluteus medius strength between obese and eutrophic individuals: a cross-sectional study

2020 ◽  
Author(s):  
Rafael Ratti Fenato ◽  
Allan Cezar Faria Araujo ◽  
Ana Tereza Bittencourt Guimarães
Keyword(s):  
Principal Component ◽  
Gluteus Medius ◽  
Great Difficulty ◽  
Cross Sectional Study ◽  
Normal Weight ◽  
Cross Sectional ◽  
Human Research Ethics ◽  
Hip Abductor ◽  
Lateral Decubitus ◽  
Muscular Function

Abstract Background: The hip abductor muscles, primarily the gluteus medius, play an important role in stabilizing the pelvis during gait. Gluteus medius weakness is associated with biomechanical changes and musculoskeletal disorders. Obese individuals can have great difficulty maintaining abductor muscular function due to being overweight and possibly experiencing a decrease in muscle mass. However, it is still unclear whether the musculature of obese individuals can compensate for these changes. Therefore, the aim of this study was to compare gluteus medius strength between obese and normal-weight individuals using a digital hand-held dynamometer.Methods: Twenty-five obese (BMI > 35 kg/m2) participants were matched for sex, age, and height with normal-weight individuals. Gluteus medius strength was measured by a single examiner using a belt-stabilized hand-held digital dynamometer placed on the knee of the individuals positioned in lateral decubitus. Three measurements were recorded with rest intervals, and only the highest value measured for each limb was used for analysis. The differences between pairs were calculated, and the normality of the data was assessed using the Shapiro-Wilk test (p < 0.05). The matrices of the variables were standardized and analysed using principal component analysis (PCA).Results: For the strength variables (Newtons) on both sides, no significant differences were detected between the groups (p > 0.05). However, significant differences were detected in these variables between the groups (p < 0.05) when the measurements were normalized to body weight (Newtons/kilograms). PCA indicated that both the absolute and normalized values of strength are lower in obese than in normal-weight individuals.Conclusions: These findings indicate that obese individuals have the same or less strength (PCA) to move more mass, which may suggest a relative weakness that induces functional limitations.Trial registration: The study was approved by the UNIOESTE Human Research Ethics Committee (#1.180.202) in July 2015.

scholarly journals Norwegian trends in numbers of lower extremity revascularisations and amputations including regional trends in endovascular treatments for peripheral arterial disease: a retrospective cross-sectional registry study from 2001 to 2014

BMJ Open ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. e016210 ◽  
Author(s):  
Kjersti Wendt ◽  
Ronny Kristiansen ◽  
Kirsten Krohg-Sørensen ◽  
Fredrik Alexander Gregersen ◽  
Erik Fosse
Keyword(s):  
Lower Extremity ◽  
Arterial Disease ◽  
Major Amputation ◽  
Cross Sectional Study ◽  
Incidence Rates ◽  
Cross Sectional ◽  
Regional Trends ◽  
Treatment Knowledge ◽  
Patients With Diabetes ◽  
Peripheral Arterial

ObjectiveThe numbers of lower extremity revascularisations and amputations are insufficiently reported in Norway. To support future policy decisions regarding the provision of vascular treatment, knowledge of such trends is important.MethodsThis retrospective cross-sectional study from 2001 to 2014 used data from the Norwegian Patient Registry. The revascularisation treatments were categorised in multilevel, aortoiliac, femoral to popliteal and popliteal to foot levels and sorted as open, endovascular and hybrid. The sessions in amputations were divided in major (thigh and below knee) and minor (ankle, foot or digit). Incidence rates were assessed per 100 000 for patients in the age group>60 years. The diabetic prevalence was calculated and the endovascular numbers at the South-Eastern, Western, Central and Northern Norway Regional Health Authority were compared.ResultsThe overall revascularisation rates increased from 308.7 to 366.8 (p=0.02). Open revascularisations decreased from 158.9 to 98.7 (p<0.01) while endovascular revascularisations increased from 142.2 to 243.4 (p<0.01). Hybrid revascularisations increased from 7.4 to 24.8 (p<0.01). Major amputation rates decreased from 87.8 to 48.7 (p<0.01) while minor amputations increased from 12.3 to 19.6 (p=0.01). The diabetic percentages increased from 12.2 to 22.3 (p<0.01) in revascularisations, from 26.5 to 30.8 (p=0.02) in major amputations and from 43.0 to 49.3 (p=0.13) in minor. (p values refer to average annual changes.) The regional trends in endovascular treatments varied within and between the vascular groups.ConclusionFrom 2001 to 2014, the revascularisation rates increased due to the rise in endovascular procedures. Open revascularisations and major amputation rates decreased, minor increased. The regional variances in endovascular treatments indicate that the availability of this technology differed between the health regions of Norway. The increase in patients with diabetes requires continued awareness of diabetes and its complications.

scholarly journals High prevalence of low back pain among young basketball players with lower extremity pain: a cross-sectional study

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yutaka Yabe ◽  
Yoshihiro Hagiwara ◽  
Takuya Sekiguchi ◽  
Haruki Momma ◽  
Masahiro Tsuchiya ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lower Extremity ◽  
Cross Sectional Study ◽  
Low Back ◽  
Sectional Study ◽  
Basketball Players ◽  
Cross Sectional ◽  
Lower Extremity Pain ◽  
High Prevalence
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