scholarly journals Should We Use Unilateral or Bilateral Tasks to Assess Maximal and Explosive Knee Extensor Strength in Patients with Knee Osteoarthritis? A Cross-Sectional Study

2021 ◽  
Vol 10 (19) ◽  
pp. 4353
Author(s):  
Jonas Pfeifle ◽  
David Hasler ◽  
Nicola Maffiuletti
Keyword(s):  
Knee Osteoarthritis ◽  
Clinical Relevance ◽  
Knee Extensor ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Strength Performance ◽  
Explosive Strength ◽  
Knee Extensor Strength ◽  
And Performance ◽  
Voluntary Contractions

Deficits in maximal and explosive knee extensor strength, which are usually assessed with unilateral tasks, are substantial in patients with knee osteoarthritis (KOA). The aim of this study was to investigate the clinical relevance of unilateral vs. bilateral tasks for assessing knee extensor strength in patients with KOA. This was achieved primarily by comparing unilateral and bilateral inter-limb strength asymmetries and secondarily by examining the relationship between unilaterally and bilaterally measured strength, and performance-based and self-reported function. Twenty-four patients with unilateral KOA (mean age: 65 ± 7 years) performed isometric gradual and explosive maximal voluntary contractions to assess, respectively their maximal and explosive strength. Performance-based and self-reported function were also evaluated with standard functional tests and questionnaires, respectively. Inter-limb asymmetries of maximal and explosive strength did not differ significantly between unilateral (mean asymmetry: 26 ± 15%) and bilateral tasks (22 ± 21%). In the same way, the relationships between knee extensor strength—measured either unilaterally or bilaterally—and performance-based or self-reported function were not influenced by the type of task. In conclusion, it does not seem to make a difference in terms of clinical relevance whether maximal and explosive knee extensor strength are evaluated with unilateral or bilateral tasks in KOA patients.

scholarly journals Association Of Knee Extensor Strength With Prevalence Of Type 2 Diabetes Among Japanese: A Cross-sectional Study

2020 ◽  
Vol 52 (7S) ◽  
pp. 157-158
Author(s):  
Takahisa Ohta ◽  
Junzo Nagashima ◽  
Takeshi Yoshihisa ◽  
Yasunori Imagawa ◽  
Nobuyoshi Ono ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Knee Extensor ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Knee Extensor Strength

scholarly journals Knee Extensor Power Relates to Mobility Performance in People With Knee Osteoarthritis: Cross-Sectional Analysis

2015 ◽  
Vol 95 (7) ◽  
pp. 989-995 ◽  
Author(s):  
Angela J. Accettura ◽  
Elora C. Brenneman ◽  
Paul W. Stratford ◽  
Monica R. Maly
Keyword(s):  
Knee Osteoarthritis ◽  
Muscle Power ◽  
Knee Extensor ◽  
Predictive Ability ◽  
Cross Sectional ◽  
Knee Oa ◽  
Stair Ascent ◽  
Stair Descent ◽  
Knee Extensor Strength ◽  
Peak Knee

BackgroundQuadriceps femoris muscle strengthening is a common rehabilitation exercise for knee osteoarthritis (OA). More information is needed to determine whether targeting muscle power is a useful adjunct to strengthening for people with knee OA.ObjectiveThe purpose of this study was to identify the predictive ability of knee extensor strength and knee extensor power in the performance of physical tasks in adults with knee OA.DesignThis study used a cross-sectional design.MethodsFifty-five participants with clinical knee OA were included (43 women; mean [SD] age=60.9 [6.9] years). Dependent variables were: timed stair ascent, timed stair descent, and the Six-Minute Walk Test (6MWT). Independent variables were: peak knee extensor strength and mean peak knee extensor power. Covariates were: age, body mass index, and self-efficacy. Multiple regression analyses were run for each dependent variable with just covariates, then a second model including strength, and then a third model including power. The R2 values were compared between models.ResultsPower explained greater variance than strength in all models. Over and above the covariates, power explained an additional 6% of the variance in the 6MWT, increasing the R2 value from .33 to .39; 8% in the stair ascent test, increasing the R2 value from .52 to .60; and 3% in the stair descent test, increasing the R2 value from .44 to .47.LimitationsThe sample demonstrated very good mobility and muscle function scores and may not be indicative of those with severe knee OA.ConclusionsIn adults with knee OA, knee extensor power was a stronger determinant of walking and stair performance when compared with knee extensor strength. Clinicians should consider these results when advising patients on exercise to maintain or improve mobility.

scholarly journals Nonparetic Knee Extensor Strength Is the Determinant of Exercise Capacity of Community-Dwelling Stroke Survivors

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Wei-Te Wang ◽  
Ling-Tzu Huang ◽  
Ya-Hui Chou ◽  
Ta-Sen Wei ◽  
Chung-Che Lin
Keyword(s):  
Oxygen Uptake ◽  
Exercise Capacity ◽  
Walking Speed ◽  
Knee Extensor ◽  
Cross Sectional Study ◽  
Peak Oxygen Uptake ◽  
Community Dwelling ◽  
Cross Sectional ◽  
Knee Extensor Strength ◽  
S Peak

Objective.To investigate the relationship among walking speed, exercise capacity, and leg strength in community dwelling stroke subjects and to evaluate which one was the leading determinant factor of them.Design.This is a descriptive, cross-sectional study. Thirty-five chronic stroke patients who were able to walk independently in their community were enrolled. Walking speed was evaluated by using the 12-meter walking test. A maximal exercise test was used to determine the stroke subjects’ exercise capacity. Knee extensor strength, measured as isokinetic torque, was assessed by isokinetic dynamometer.Results.The main walking speed of our subjects was 0.52 m/s. Peak oxygen uptake (VO2peak) was1.21±0.43 L/min. Knee extensor strength, no matter whether paretic or nonparetic side, was significantly correlated to 12-meter walking speed and exercise capacity. Linear regression also showed the strength of the affected knee extensor was the determinant of walking speed and that of the nonparetic knee extensor was the determinant of exercise capacity in community dwelling stroke subjects.Conclusions.Walking speed and peak oxygen uptake were markedly decreased after stroke. Knee extensor strength of nonparetic leg was the most important determinant of exercise capacity of the community-dwelling stroke subjects. Knee extensor strengthening should be emphasized to help stroke patient to achieve optimal community living.

Frequency of Neck and Upper Extremity Musculoskeletal Disorders in Dentists

2020 ◽  
Vol 9 (3) ◽  
pp. 207-211
Author(s):  
Sidra Sarwar ◽  
Sara Khalid ◽  
Tahir Mahmood ◽  
Hadeeqa Jabeen ◽  
Shahid Imran
Keyword(s):  
Upper Extremity ◽  
Musculoskeletal Disorders ◽  
Health Care Professionals ◽  
Descriptive Analysis ◽  
Sampling Technique ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Dental Hospital ◽  
Upper Extremity Musculoskeletal Disorders ◽  
And Performance

Background: Musculoskeletal disorders are not only becoming prevalent among health care professionals in our country but are affecting their health and performance adversely. They are caused by poor ergonomics and awkward posture during work activities. The purpose of this study was to determine the frequency of neck and upper limb musculoskeletal disorders in dentists of Lahore, Pakistan. Material and Methods: This cross-sectional study was conducted during October 2017 to March 2018. The data was collected using convenient sampling technique from 162 Dentists including 52 males and 110 females of Children hospital Lahore, Punjab Dental hospital and Fatima Memorial Hospital, Lahore. Data was collected by using Mangalore Questionnaire for identification of musculoskeletal disorders. Descriptive analysis of the data was done using SPSS version 22.0. Results: Of 162 dentists, 115 (71%) suffered from musculoskeletal disorders. Shoulder was the most commonly affected region (30.9%) followed by neck (25.9%), arm (6.2%), wrist (4.3%), elbow (3.1%) and forearm (0.6%). Pain (45.7%) was found to be the most common complaint followed by muscle weakness (20.4%), paraesthesia (3.7%) and swelling (1.2%). Conclusions: It was concluded that majority of the dentists were suffering from musculoskeletal disorders with shoulder as the most affected region and pain as the most frequent complaint. Key words: Dentists, Musculoskeletal disorders, Neck pain, Upper extremity

THE EFFECT OF A TRIPOD CANE ON THE FUNCTIONAL MOBILITY OF PATIENTS WITH KNEE OSTEOARTHRITIS

2020 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Nelson Sudiyono
Keyword(s):  
Knee Osteoarthritis ◽  
Cross Sectional Study ◽  
Functional Mobility ◽  
Cross Sectional ◽  
Knee Oa ◽  
Walking Aids ◽  
Symptomatic Knee Osteoarthritis ◽  
Symptomatic Knee ◽  
Contralateral Hand ◽  
Painful Knee

Background: Canes have been recommended as walking aids for knee osteoarthritis to reduce the loading on the affected knee. Patients are usually recommended to hold the cane in the contralateral hand to the affected knee. Nevertheless, some patients prefer to hold the cane ipsilateral to the affected knee. However, the effect of using ipsilateral or contralateral tripod cane on functional mobility in patients with knee osteoarthritis is still unknown Objective: To compare the immediate effect of ipsilateral and contralateral tripod cane usage on functional mobility in patients with symptomatic knee osteoarthritis Method: This cross-sectional study involved 30 overweight or obese patients with symptomatic unilateral or bilateral knee osteoarthritis (Kellgren Lawrence grade 2 and 3) who never use a cane. Functional mobility was evaluated with Time Up and Go test in three conditions; without walking aid, with tripod cane contralateral and ipsilateral to the more painful knee. Results: The TUG time of aid-free walking is 4.75 (p < 0.001, 95% CI 3.79 - 5.71) seconds faster than ipsilateral cane use and 6.69 (p < 0.001, 95%CI 5.35 - 8.03) seconds faster than contralateral cane use. The TUG time of ipsilateral cane use is 1,94 (95% CI, 1.13 - 2.79) seconds faster than contralateral. Conclusion: Patients with symptomatic knee OA who use tripod cane ipsilateral to the more painful knee have higher functional mobility than the contralateral.

scholarly journals Caffeine Health Claims on Sports Supplement Labeling. Analytical Assessment According to EFSA Scientific Opinion and International Evidence and Criteria

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2095
Author(s):  
Pedro Estevan Navarro ◽  
Isabel Sospedra ◽  
Alejandro Perales ◽  
Cristina González-Díaz ◽  
Rubén Jiménez-Alfageme ◽  
...  
Keyword(s):  
Food Safety ◽  
Endurance Performance ◽  
Food Supplement ◽  
Cross Sectional Study ◽  
European Food Safety Authority ◽  
Health Claims ◽  
Cross Sectional ◽  
Strength Performance ◽  
Scientific Opinion ◽  
Term Performance

Caffeine is a food supplement widely consumed by athletes, but it has not been established. So far, the veracity of their labeling in terms of the dosage and cause/effect relationship aimed at the consumer. The aim is to analyze the health claims and the dosage presented on the labeling of caffeine supplements and to evaluate if they follow the European Food Safety Authority (EFSA) and international criteria. A descriptive cross-sectional study of a sample of caffeine supplements was carried out. The search was done through the Amazon and Google Shopping web portals. In order to assess the adequacy of the health claims, the guidelines of reference established by European Food Safety Authority were compared to the Academy of Nutrition and Dietetics, International Olympic Committee, and Australian Institute of Sport guidelines; in addition, recent systematic reviews were addressed. A review of labels of 42 caffeine supplements showed that, in less than 3% of the products were the health claims supported by the recommendations and by the labeled quantity of caffeine. The claims that fully complied the recommendations were, “improves or increases endurance performance”, “improves strength performance”, or “improves short-term performance”. In most cases, the recommended dosage was 200 mg/day for these products, which is the minimum for the caffeine effects to be declared. The rest of the health claims were not adequate or need to be modified. Most of the health claims identified indicated an unproven cause and effect, which constitutes consumer fraud, and so must be modified or eliminated.

scholarly journals Association of Varus Thrust With Pain and Stiffness and Activities of Daily Living in Patients With Medial Knee Osteoarthritis

2016 ◽  
Vol 96 (2) ◽  
pp. 167-175 ◽  
Author(s):  
Naoto Fukutani ◽  
Hirotaka Iijima ◽  
Takahiko Fukumoto ◽  
Daisuke Uritani ◽  
Eishi Kaneda ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Predictor Variable ◽  
Cross Sectional Study ◽  
Sensitivity Analyses ◽  
Varus Alignment ◽  
Cross Sectional ◽  
Medial Knee ◽  
Knee Oa

Background Increasing evidence highlights potential associations between varus thrust and health domains associated with knee osteoarthritis (OA). Objective The aim of this study was to investigate the association between varus thrust and 2 subcategories—“pain and stiffness” and “activities of daily living (ADL)”—of the Japanese Knee Osteoarthritis Measure (JKOM). Design This was a cross-sectional study. Methods In total, 296 outpatients with knee OA visiting orthopedic clinics were enrolled. The inclusion criteria were age ≥50 years, medial knee OA and Kellgren-Lawrence (K/L) grade ≥1 in one or both knees, and the ability to walk independently. Standard posterior-anterior knee radiographs were measured for varus alignment. Participants were video recorded while walking and were evaluated for the presence or absence of varus thrust. Pain and stiffness of the knee joint and ADL were evaluated using the JKOM. Multivariate regressions (outcomes: pain and stiffness and ADL; predictor variable: varus thrust) were performed. Results Varus thrust was present in 46 (16.2%) of 284 patients. Multivariate regression analyses demonstrated that varus thrust is independently associated with pain and stiffness, adjusted for age, sex, body mass index, K/L grade, and varus alignment (β=.17, P=.005). However, the association between varus thrust and ADL was not significant (β=.11, P=.058). Based on sensitivity analyses, including participants of K/L grade 1 had little influence on this analysis. Limitations Only 16.2% of participants had a varus thrust. Moreover, a cause-effect relationship between varus thrust and pain and stiffness remains unknown due to the cross-sectional design of this study. Conclusions Varus thrust was associated with pain and stiffness in patients with medial knee OA. However, the association between varus thrust and ADL did not reach significance.

Sign in / Sign up

Export Citation Format

Share Document