Hip and Trunk Muscle Activity and Mechanics During Walking With and Without Unilateral Weight

2021 ◽  
pp. 1-8
Author(s):  
Kerri A. Graber ◽  
Kari L. Loverro ◽  
Mark Baldwin ◽  
Erika Nelson-Wong ◽  
Joshua Tanor ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Therapeutic Option ◽  
Frontal Plane ◽  
Estimating Equation ◽  
Trunk Muscle ◽  
Lower Extremity Injury ◽  
Generalized Estimating Equation ◽  
Functional Activities ◽  
Strengthening Exercises ◽  
Hip Abductor

Pelvic drop is caused by decreased hip abductor muscle activity and is associated with lower-extremity injury. Hip abductor strengthening exercises are well established; however, no standard method exists to increase hip abductor activity during functional activities. The purpose of this research was to study the effects of walking with a unilateral weight. A total of 26 healthy adults walked on an instrumented treadmill with and without handheld weight (15%–20% body weight). Muscle activity, kinematic, and kinetic data were collected using surface electromyography, motion capture, and force plates, respectively. Average hip and trunk muscle activity, hip, pelvic, and trunk angles, and peak internal hip moments during stance were compared for each side (contralateral/ipsilateral to the weight) between conditions (unweighted/weighted) using a generalized linear model with generalized estimating equation correction. Interactions between condition and side were observed for muscle activity, frontal plane pelvic and trunk angles, and frontal plane hip moments (P ≤ .003). Compared with the unweighted condition, the weighted condition had higher hip abductor activity contralateral to the weight (P < .001), while no change was found ipsilateral to the weight (P ≥ .790). Similar changes were found for kinematic and kinetic variables. Walking with a unilateral weight may be a therapeutic option to increase functional hip abductor activity.

Models for Longitudinal Data: A Generalized Estimating Equation Approach

Biometrics ◽  
1988 ◽  
Vol 44 (4) ◽  
pp. 1049 ◽  
Author(s):  
Scott L. Zeger ◽  
Kung-Yee Liang ◽  
Paul S. Albert
Keyword(s):  
Longitudinal Data ◽  
Estimating Equation ◽  
Generalized Estimating Equation ◽  
Equation Approach ◽  
Generalized Estimating

scholarly journals The application of parallel robotics to investigate the effect of lumbar bracing on trunk muscle activity

2010 ◽  
Vol 7 (4) ◽  
pp. 243-251
Author(s):  
Gregory N. Kawchuk ◽  
Narasimha G. Prasad ◽  
Jonathan Glass ◽  
Carolyn Knight ◽  
Serena Third ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Trunk Muscle ◽  
Parallel Robotics

Remittances and the Financing of Terrorism In Sub-Saharan Africa: 1974 - 2006

2012 ◽  
Vol 18 (1) ◽  
Author(s):  
Juliet U. Elu ◽  
Gregory N. Price
Keyword(s):  
Economic Growth ◽  
Count Data ◽  
Important Determinant ◽  
Estimating Equation ◽  
Sub Saharan Africa ◽  
Generalized Estimating Equation ◽  
Parameter Estimates ◽  
Consumption Expenditures ◽  
Sub Saharan ◽  
Financing Of Terrorism

AbstractRemittances have been recognized as an important determinant of economic growth for Sub-Saharan African economies as they can finance other determinants that constitute drivers of growth. To the extent that remittances finance terrorism, they can also inhibit economic growth as terrorism can constrain important drivers of growth such as investment and consumption expenditures. In this paper, we appeal to a theory of rational terrorism and consider whether remittances to Sub-Saharan Africa finance terrorism. We estimate the parameters of a static and dynamic terrorism incident supply function with maximum likelihood and Generalized Estimating Equation count data estimators for Sub-Saharan Africa between 1974 and 2006. Our parameter estimates suggest that for Sub-Saharan Africa, remittances are a source of finance for terrorism. We find that approximately one terrorism incident is financed in Sub-Saharan Africa for remittance inflows that range between approximately one quarter of a million dollars and one million dollars.

scholarly journals Trunk muscle activity during dynamic exercises on land and in water for participants with and without chronic low back pain

Physiotherapy ◽  
2017 ◽  
Vol 103 ◽  
pp. e6-e7
Author(s):  
L. Linton ◽  
S. Valentine ◽  
S. Coleman ◽  
K. Kaliarntas ◽  
S. Psycharakis
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Muscle Activity ◽  
Trunk Muscle ◽  
Low Back

The relationship between remission and health-related quality of life in a cohort of SLE patients

Rheumatology ◽  
2018 ◽  
Vol 58 (4) ◽  
pp. 628-635 ◽  
Author(s):  
Michel W P Tsang-A-Sjoe ◽  
Irene E M Bultink ◽  
Maaike Heslinga ◽  
Lilian H van Tuyl ◽  
Ronald F van Vollenhoven ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Global Assessment ◽  
Short Form ◽  
Estimating Equation ◽  
Generalized Estimating Equation ◽  
Health Related Quality ◽  
Related Quality ◽  
Health Related ◽  
The Relationship

Abstract Objective To investigate the relationship between remission and health-related quality of life (HRQoL) in patients with SLE in a longitudinal observational cohort. Methods HRQoL was measured at cohort visits using the physical and mental component score (PCS and MCS, respectively) of the Short Form 36 questionnaire. Definitions of Remission in SLE remission categories (no remission/remission on therapy/remission off therapy) were applied. Determinants of PCS and MCS were identified with simple linear regression analyses. Association between remission and HRQoL was assessed using generalized estimating equation models. Results Data from 154 patients with 2 years of follow-up were analysed. At baseline 60/154 (39.0%) patients were in either form of remission. Patients in remission had higher Short Form 36 scores in all subdomains compared with patients not in remission. PCS was positively associated with remission and employment, and negatively associated with SLICC damage index, ESR, medication, patient global assessment and BMI. MCS was positively associated with Caucasian ethnicity and negatively associated with patient global assessment. In generalized estimating equation analysis, a gradual and significant increase of PCS was observed from patients not in remission (mean PCS 36.0) to remission on therapy (41.8) to remission off therapy (44.8). No significant difference in MCS was found between remission states. Conclusion we show a strong and persistent association between remission and PCS, but not MCS. These results support the relevance (construct validity) of the Definition of Remission in SLE remission definitions and the further development of a treat-to-target approach in SLE.

scholarly journals Foreign Direct Investment, Economic Freedom and Economic Growth: Evidence from Developing Countries

2016 ◽  
Vol 8 (11) ◽  
pp. 200 ◽  
Author(s):  
Md. Shakib Hossain
Keyword(s):  
Economic Growth ◽  
Developing Countries ◽  
Foreign Direct Investment ◽  
Standard Deviation ◽  
Poisson Regression ◽  
Direct Investment ◽  
Economic Freedom ◽  
Random Effect ◽  
Estimating Equation ◽  
Generalized Estimating Equation

<p class="Default">This paper has explores the interplay between economic freedom, foreign direct investment and economic growth using panel data analysis for a sample of 79 developing countries from 1998 to 2014 by considering the level of economic freedom, as provided by the “Heritage Foundation”. Panel unit root, pedroni residual co-integration test, generalized least square (GLS), feasible GLS (FGLS), pooled OLS, random effect, fixed effect, poisson regression, prais-winsten, generalized method of movement (GMM) and generalized estimating equation (GEE) methods have used to estimates the relationship. According to the OLS and generalized method of movement the coefficient implies that a one standard deviation improvement in business freedom, trade freedom, size, investment freedom, property rights, freedom from corruption, labor freedom, financial freedom, fiscal freedom, monetary freedom increases FDI by 21.4%, 15.6%, 21.6%, 17.5%, 11.55, 9.1%, 6.9%, 8.5%, 7.4%, 10.3% and 56.1%, 45.3%, 58.3%, 51.6%, 33.7%, 39.2%, 47.4%, 41.6%, 32.5%, 38.5% points respectively and  for the economic variable ,the coefficient implies that a one standard deviation improvement in GDPG and GDPPC increases FDI by 24.1%, 17.4% and 30.2%, 33.4% points respectively. By using the other method like random effect, fixed effect, poisson regression, prais-winsten and generalized estimating equation (GEE) method explores that economic freedom in the host country is a positive determinants of FDI inflows in developing countries and also the result suggests that foreign direct investment is positively correlated with the economic growth in the host countries.</p>

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