scholarly journals Isokinetic performance of knee flexor and extensor muscles in community-dwelling elderly women

2015 ◽  
Vol 28 (3) ◽  
pp. 555-562 ◽  
Author(s):  
Diogo C. Felício ◽  
Daniele S. Pereira ◽  
Bárbara Z. de Queiroz ◽  
Alexandra M. Assumpção ◽  
João M. D. Dias ◽  
...  
Keyword(s):  
Muscle Function ◽  
Elderly Women ◽  
Descriptive Analysis ◽  
Age Groups ◽  
Peak Torque ◽  
Community Dwelling ◽  
Muscle Performance ◽  
Total Work ◽  
Isokinetic Dynamometer ◽  
Extensor Muscles

AbstractIntroduction The isokinetic dynamometer enables accurate assessment of muscle function. In Brazil, few studies have assessed the isokinetic muscle performance in older adults making interpretation and comparison of results with other studies.Objectives To conduct a descriptive analysis of the performance of the muscle flexor and extensor muscles of the knee joint in elderly community and compare the performance between the age groups 65-74 years and 75 years or more.Methods This is a cross sectional observational study with a convenience sample of 229 elderly community. For the analysis of muscle performance was used isokinetic dynamometer (Biodex System 3 Pro™) in the angular velocities of 60 °/s and 180 °/s. The variables evaluated were peak torque, peak torque normalized by body weight, total work normalized by body mass, total work, average power and agonist/antagonist ratio. Descriptive analysis was used to characterize the sample. For comparison between age groups was used Student's t-test with α = 0.05.Results The elderly women with older age showed a statistically significant decrease in most of the variables (p < 0.05) except for the agonist and antagonist knee (p = 0.398).Conclusions The isokinetic was a sensitive tool to characterize the modifications caused by aging on muscle function. Elderly with results below the lower limits of the confidence intervals for all variables certainly has a decreased strength for the age group evaluated and must be addressed therapeutically. The results can be used as a benchmark in clinical practice and future research.

scholarly journals COMPARAÇÃO DO PICO DE TORQUE ISOCINÉTICO CONCÊNTRICO EM INDIVÍDUOS ATIVOS COM E SEM A APLICAÇÃO DE BANDAGEM ELÁSTICA FUNCIONAL

2015 ◽  
Vol 13 ◽  
pp. 270
Author(s):  
Jéssica Kirsch Micheletti ◽  
Sérgio Luiz Rodrigues De Souza ◽  
Ana Flávia Spadaccini Silva ◽  
Rinaldo Bernardelli Junior ◽  
Berlis Ribeiro dos Santos Menossi
Keyword(s):  
Muscle Function ◽  
Knee Flexion ◽  
Functional Performance ◽  
Peak Torque ◽  
Muscle Performance ◽  
Isokinetic Dynamometer ◽  
Physically Active ◽  
Kinesio Taping ◽  
Isokinetic Evaluation ◽  
Flexion And Extension

Introduction: Physically active individuals constantly seek resources that can improve their muscle performance, avoid the appearance of lesions and even relapses. Kinesio Taping has been used for both treatment/prevention of injury and to improve functional performance. The isokinetic dynamometer enables rapid quantitative analysis of many parameters of muscle function, being the peak torque the most representative in research and clinical practice. Objective: To compare the concentric peak torque isokinetic in active individuals with and without the application of kinesio taping. Method: 10 male volunteers were evaluated and submitted to the IPAQ questionnaire, where they were considered actives. Then, were realized isokinetic evaluations into steps: Phase Control (without application of elastic taping) and Phase Bandage (with application of placebo and original bandage). The same protocol isokinetic repetitions of 5 to 60 ° / s knee flexion and extension was adopted in all the stages for the reliability and reproducibility of the data. Results: The application of taping in physically active individuals in isokinetic evaluation did not increase the concentric peak torque at 60 °/s. Conclusion: Was observed reliability and reproducibility of the results, however, no significant differences were observed in concentric peak torque isokinetic of the quadriceps of active individuals with and without the application of the original kinesio taping and placebo.

scholarly journals Relationship between propulsive force of the arm, body composition and isokinetic muscle strength indicators in surfers

2018 ◽  
Vol 20 (3) ◽  
pp. 342-351
Author(s):  
Sidarta Oliveira Geber ◽  
Bruno Remígio Cavalcante ◽  
Antonio Henrique Germano-Soares ◽  
Raysa Catarina Cavalcante Figueiredo Montes ◽  
Arthur Henrique Oliveira Silva ◽  
...  
Keyword(s):  
Body Composition ◽  
Internal Rotation ◽  
Fat Mass ◽  
Muscle Function ◽  
External Rotation ◽  
Pearson Correlation ◽  
Peak Torque ◽  
Total Work ◽  
Propulsive Force ◽  
Teres Major

This study aimed to evaluate the potential relationship between body composition (percentage of fat mass (FM %), fat mass and lean mass), muscle function (e.g., muscles; deltoid side and front, pectoralis major and teres major) and the propulsive force of the arm (PFA). Sixteen competitive surfers (29.1 ± 7.3 years; 1.72 ± 0.06 m; 74.2 ± 1.4 kg) were assessed for height, body mass, body composition (dual-energy-DXA), muscle function and PFA. Pearson correlation analyses were used to verify the relationship between all variables. An inverse correlations were found between PFA and isokinetic parameters to 60o/s: external rotation (peak torque: r = -0.71; p = 0.014; total work: r = -0.75; p = 0.007; power: r = -0.72; p = 0.011) and internal rotation (peak torque: r = -0.61; p = 0.045; total work: r = -0.73; p = 0.010; power: r = -0.61; p = 0.045) and 300o/s: external rotation (peak torque: r = -0.79; p = 0.003; total work: r = -0.84; p<0,001; power: r = -0.81; p = 0.002) and internal rotation (peak torque: r = -0.69; p = 0.017; total work: r = -0.72; p = 0.011; power: r = -0.69; p = 0.017). There was no significant correlation between body composition components and PFA (p>0.05). Although correlations do not imply cause and effect, PFA is not correlated with body composition in surfers and these relationships are inversely related to the parameters of muscle function.

Isokinetic Strength Profiles of Thigh Muscles of Modern Dancers in Relation to Their Experience Level

2013 ◽  
Vol 28 (3) ◽  
pp. 137-144
Author(s):  
Ani Agopyan ◽  
Demet Tekin ◽  
Mehmet Unal ◽  
Hizir Kurtel ◽  
Gullu Turan ◽  
...  
Keyword(s):  
Body Weight ◽  
Peak Torque ◽  
Thigh Muscle ◽  
Isokinetic Strength ◽  
Total Work ◽  
Isokinetic Dynamometer ◽  
Experience Level ◽  
Strength Tests ◽  
Angular Velocities ◽  
Modern Dancers

The aim of this study was to determine maximal voluntary peak torque (PT), PT% body weight (PT%BW), total work (TW), and hamstring/quadriceps ratio (HQR) for bilateral and unilateral thigh muscle strength during isokinetic muscle contractions in modern dancers in relation to their experience level. METHODS: Twenty-two female dancers were divided into two groups: intermediate dancers (ID, n=11) and advanced dancers (AD, n=11). Strength tests were performed using the Biodex System-III Pro Multijoint System isokinetic dynamometer to determine three joint angular velocities (60, 180, 300°/s). RESULTS: During extension, ADs exhibited higher ratios in the HQR (p=0.016) on right leg at 300°/s, IDs generated greater TW (p=0.042), and within groups, there was a significant left-to-right difference in the HQR at 300°/s for ADs (p=0.042). During flexion, within groups, the ADs exhibited significant differences between legs for both PT (p=0.026) and PT%BW (p=0.022) at 300°/s. CONCLUSION: For both groups, the average HQR in all angular velocities was not within the recommended range, which is required to prevent injuries; at the same time, unilateral muscular imbalances existed. Lower extremities of ADs exhibited asymmetric strength patterns at a certain level. Further research should be done to confirm the findings of this pilot study.

scholarly journals Knowledge about mammography and associated factors: population surveys with female adults and elderly

2013 ◽  
Vol 16 (4) ◽  
pp. 930-942 ◽  
Author(s):  
Ione Jayce Ceola Schneider ◽  
Marui Weber Corseuil ◽  
Antonio Fernando Boing ◽  
Eleonora d'Orsi
Keyword(s):  
Associated Factors ◽  
Elderly Women ◽  
Descriptive Analysis ◽  
Age Groups ◽  
The Elderly ◽  
Cancer Information ◽  
Population Surveys ◽  
Factors Associated ◽  
Younger Age ◽  
Adjusted Model

The purpose of this paper is to describe the knowledge about mammography and to identify associated factors in female adults and elderly. Data were obtained from two population surveys, one with female adults and another with elderly women from Florianópolis (SC) in 2009 - 2010. A descriptive analysis of the variables was carried out, the appropriate mean of responses about mammography was estimated and crude and adjusted Poisson regression was conducted to identify associated factors. Among adults, 23.1% answered all of the questions appropriately and the appropriate average responses was 7.2 (95%CI 7.1 - 7.3) in a total of 9. In the adjusted model, older age, higher education and income were associated with knowledge about mammography. For the elderly, 15.3% answered all questions appropriately and the average of appropriate responses was 6.4 (95%CI 5.2 - 6.5) and the factors associated with knowledge about mammography in the adjusted model were younger age groups, increased education and income, and identification of mammography as the main diagnostic method for breast cancer. Information about mammography can neither be transmitted in a clear way nor be easily understood; there are also demographic and socioeconomic differences concerning the knowledge about the exam.

scholarly journals Isokinetic assessment of knee flexor/extensor muscular strength in elderly women

2002 ◽  
Vol 57 (4) ◽  
pp. 131-134 ◽  
Author(s):  
Marcos de Amorim Aquino ◽  
Luiz Eugênio Garcez Leme ◽  
Marco Martins Amatuzzi ◽  
Júlia Maria D'Andréa Greve ◽  
Antônio Sérgio A.P. Terreri ◽  
...  
Keyword(s):  
Angular Velocity ◽  
Muscular Strength ◽  
Elderly Women ◽  
Previous History ◽  
Peak Torque ◽  
Contralateral Side ◽  
Lower Limbs ◽  
Isokinetic Dynamometer ◽  
Knee Flexor ◽  
Torque Values

OBJECTIVE: To assess knee flexor-extensor muscular strength in elderly women with no previous history of musculoskeletal disorders on the lower limbs using an isokinetic dynamometer, in order to obtain data that could be used as a comparative parameter in the evaluation of elderly women with knee disorders, thus facilitating a better rehabilitation of these patients. METHODS: Twenty-six volunteers aged 75 to 83 years were studied using a Cybex® 6000 isokinetic dynamometer. The chosen angular velocity was 60 º/s, and concentric exercise was used for either flexion or extension. The studied parameters were: peak torque, angle of peak torque, and flexor-extensor torque rate. RESULTS: There were no differences between dominant (D) and nondominant (ND) knee peak torque values. This was true for both flexor (D = 42.46 ± 9.09 Nm / ND = 40.65 ± 9.38 Nm) and extensor (D = 76.92 ± 13.97 Nm / ND = 77.65 ± 15.21 Nm) movements. The descriptive statistical analysis of the values obtained for the flexor-extensor peak torque rate and for the angle of occurrence of peak torque was the same for the dominant and nondominant sides. CONCLUSIONS: The values of peak torque for the contralateral side can be used as a reference during rehabilitation of elderly women with acute disease of the knee, and the angular velocity of 60 º/s is proper and safe for isokinetic assessment of elderly people.

Correlation Between Muscle Mass And Muscle Function In Community-dwelling Elderly Women Of Northeast Mexico

2016 ◽  
Vol 48 ◽  
pp. 354
Author(s):  
Oswaldo Ceballos-Gurrola ◽  
Maria Cristina Enriquez-Reyna ◽  
Eduardo Cavazos-Hernandez ◽  
Erik Ramirez
Keyword(s):  
Muscle Mass ◽  
Muscle Function ◽  
Elderly Women ◽  
Community Dwelling

scholarly journals Effects of Brisk Walking on Physical Performance and Muscle Function in Community Dwelling Elderly Women

2017 ◽  
Vol 06 (02) ◽  
Author(s):  
Andrea P Rossi ◽  
Sofia Rubele ◽  
Luca Pelizzari ◽  
Francesco Fantin ◽  
Susanna Morgante ◽  
...  
Keyword(s):  
Physical Performance ◽  
Muscle Function ◽  
Elderly Women ◽  
Community Dwelling ◽  
Brisk Walking

Effect of strength training combined with antioxidant supplementation on muscular performance

2018 ◽  
Vol 43 (8) ◽  
pp. 775-781 ◽  
Author(s):  
Maurilio T. Dutra ◽  
Sávio Alex ◽  
Marcio Rabelo Mota ◽  
Nathalia B. Sales ◽  
Lee E. Brown ◽  
...  
Keyword(s):  
Strength Training ◽  
Randomized Study ◽  
Muscle Thickness ◽  
Peak Torque ◽  
Quadriceps Muscle ◽  
Muscle Performance ◽  
Control Group ◽  
Total Work ◽  
Antioxidant Supplementation ◽  
Significant Group

This was a placebo-controlled randomized study that aimed to investigate the effects of strength training (ST) combined with antioxidant supplementation on muscle performance and thickness. Forty-two women (age, 23.8 ± 2.7 years; body mass, 58.7 ± 11.0 kg; height, 1.63 ± 0.1 m) were allocated into 3 groups: vitamins (n = 15), placebo (n = 12), or control (n = 15). The vitamins and placebo groups underwent an ST program, twice a week, for 10 weeks. The vitamins group was supplemented with vitamins C (1 g/day) and E (400 IU/day) during the ST period. Before and after training, peak torque (PT) and total work (TW) were measured on an isokinetic dynamometer, and quadriceps muscle thickness (MT) was assessed by ultrasound. Mixed-factor ANOVA was used to analyze data and showed a significant group × time interaction for PT and TW. Both the vitamins (37.2 ± 5.4 to 40.3 ± 5.6 mm) and placebo (39.7 ± 5.2 to 42.5 ± 5.6 mm) groups increased MT after the intervention (P < 0.05) with no difference between them. The vitamins (146.0 ± 29.1 to 170.1 ± 30.3 N·m) and placebo (158.9 ± 22.4 to 182.7 ± 23.2 N·m) groups increased PT after training (P < 0.05) and PT was higher in the placebo compared with the control group (P = 0.01). The vitamins (2068.3 ± 401.2 to 2295.5 ± 426.8 J) and placebo (2165.1 ± 369.5 to 2480.8 ± 241.3 J) groups increased TW after training (P < 0.05) and TW was higher in the placebo compared with the control group (P = 0.01). Thus, chronic antioxidant supplementation may attenuate peak torque and total work improvement in young women after 10 weeks of ST.

THE EFFECTS OF HIGH ADIPOSITY ON CONCENTRIC AND ECCENTRIC MUSCLE PERFORMANCE OF UPPER AND LOWER LIMB MUSCULATURE IN YOUNG AND OLD ADULTS

2021 ◽  
Author(s):  
Sharn Shelley ◽  
Rob S James ◽  
Steven James Eustace ◽  
Emma Eyre ◽  
Jason Tallis
Keyword(s):  
Older Adults ◽  
Body Mass ◽  
Muscle Function ◽  
Handgrip Strength ◽  
Peak Torque ◽  
Muscle Performance ◽  
Muscle Quality ◽  
Upper Body ◽  
Age Related ◽  
The Impact

The present study uniquely examined the influence of old age and adiposity on maximal concentric and eccentric torque and fatigue of the elbow (EF, EE) and knee (KF, KE) flexors and extensors. 40 males were recruited and categorised into young (n=21, 23.7±3.4) and old (n=19, 68.3±6.1) and then further into normal (young = 16.9±2.5%, old = 20.6±3.1%) and high adiposity (young = 28.9±5.0%, old = 31.3±4.2%) groups. Handgrip strength, sit-to-stand performance, and isokinetic assessments of peak torque at 60°, 120° and 180° s-1 were measured. Older men produced significantly less concentric and eccentric peak torque (P<0.016) but this was not influenced by adiposity (P>0.055). For KE and KF, high adiposity groups demonstrated reduced peak torque normalised to body mass (P<0.021), and muscle and contractile mode specific reduction in torque normalised to segmental lean mass. Eccentric fatigue resistance was unaffected by both age and adiposity (P>0.30) and perceived muscle soreness, measured up to 72 hours post, was only enhanced in the upper body of the young group following eccentric fatigue (P=0.009). Despite the impact of adiposity on skeletal muscle function being comparable between ages, these results suggest high adiposity will have greater impact on functional performance of older adults. Novelty: •Irrespective of age, high adiposity may negatively impact force to body mass ratio and muscle quality in a muscle and contractile mode specific manner. •Whilst the magnitude of adiposity effects is similar across ages, the impact for older adults will be more substantial given the age-related decline in muscle function.

Balance Control and Peripheral Muscle Function in Aging: A Comparison Between Individuals with Acromegaly and Healthy Subjects

2017 ◽  
Vol 25 (2) ◽  
pp. 218-227 ◽  
Author(s):  
Telassin Silva Homem ◽  
Fernando Silva Guimarães ◽  
Maurício Santos Soares ◽  
Leandro Kasuki ◽  
Mônica Roberto Gadelha ◽  
...  
Keyword(s):  
Older Adults ◽  
Muscle Function ◽  
Balance Control ◽  
Peak Torque ◽  
Total Work ◽  
Lateral Instability ◽  
Peripheral Muscle ◽  
Risk Of Falls ◽  
Paired Control ◽  
Older Subjects

Advances in the knowledge of acromegaly are leading to an increase in the survival rate of acromegalic subjects. This study was conducted to evaluate balance control, risk of falls, and peripheral muscle function in acromegalic older adults. Seventeen older subjects with acromegaly (67 [63–73] years) and 20 paired control subjects were evaluated with balance scales, force platform, and knee isokinetic dynamometry tests. There were significant differences between the groups on several balance and gait scales, with a worse performance and greater risk of falls in the acromegalic older adults. Acromegalic older adults had lower values for peak torque, maximum repetition of the total work, and total work during extension at 240°/s. The acromegalic older adults had higher values in the medial-lateral range. Acromegaly subjects had lateral instability that compromises their body balance and increases the risk of falls. Moreover, there was a propensity for muscle fatigue in these individuals.

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