Jamar Dynamometer Research Articles

Effect of Soft Liner Female Housings Retaining Mandibular Two Implant-Supported Overdentures on Hand Grip Strength and Patient Satisfaction in Egyptian Males

Introduction: Loss of natural teeth could make food consumption very difficult and leadsto malnutrition that is associated with muscle wasting. It is well known that implant-supportedmandibular overdentures increase the functional outcome, masticatory performance, nutritionalstatus and patient’s satisfaction compared with conventional complete dentures. The study aimedto evaluate the satisfaction and hand grip strength (HGS) for patients treated with two implantsupportedmandibular overdentures retained by soft liner female housings with either bar or ballattachments and opposed by maxillary conventional dentures.Materials and Methods: Twenty-one completely edentulous Egyptian males were selectedwith a mean age of 59.4 years and ranged between 53 and 67 years. Patients were allocatedrandomly into two groups: Group A (n=12) patients received Hader bar design connecting bothimplants in a straight line with soft liner female housing to retain the overdentures. Group B(n=9) patients received two ball patrices with soft liner female receptacles to retain the implantoverdentures. Patient satisfaction was measured by using 100 mm VA S questionnaire and Handgrip strength (HGS) was recorded by using handheld JAMAR dynamometer. Patients were recalledfor measurements at baseline with conventional dentures before implant placement (T0) and then6 months (T6) and 12 months (T12) after overdenture insertion. All statistical tests were 2-tailed atthe 5% level of significance.Results: From the pairwise statistical analysis, it was noticed that significant satisfaction VASvalues for bar group were higher in comparison to ball group in relation to retention and stability.Bar group revealed significantly higher HGS values from the baseline, while, Ball group exhibitedno significant differences between times of observation.Conclusion: Overdentures retained by soft liner around Hader bars splinting two implants maybe beneficial for edentulous patients with impaired nutritional status manifested by weak hand grip.

Reduced Handgrip Strength in Congenital Heart Disease With Regard to the Shunt Procedure in Infancy.

Objective: In many patients with congenital heart disease (CHD) arterial blood flow to the arms is inhibited due to shunt surgery in infancy. This study investigates the handgrip strength of patients with CHD in regard to previous shunt procedures.Patients and Methods: Handgrip was evaluated in 424 patients with various CHD (189 female, age 28.1 ± 13.4 years) including 63 with shunt procedures in infancy; and 123 controls (51 female, 35.6 ± 14.2 years) using a Jamar dynamometer adjusted for hand size. The best of three repetitions was recorded for each side and the right-to-left hand ratio was calculated. The 63 shunted patients were grouped considering the side of the shunt: 14 right, 35 central and 14 left.Results: Patients with CHD, especially shunts, had significantly lower handgrip strength in the dominant hand than controls (controls: 43.2 ± 14.8 kg, CHD: 36.8 ± 14.8 kg, left shunt: 33.6 ± 14.6 kg, central shunt: 30.7 ± 15.2 kg and right shunt 27.8 ± 13.6 kg; p < 0.001). In controls the right hand was 8.3% stronger, comparable to patients with either no shunt or central shunt (controls: 8.3 ± 13.2%; no shunt: 7.9 ± 15.3%; central shunt: 9.5 ± 18.1% p = 0.820). In patients with a left shunt the right hand was 22.5 ± 17.8% stronger than the left (p = 0.027 compared to central) while in those with a right shunt the right hand was 2.3 ± 18.3% weaker (p = 0.049 compared to central).Conclusions: Shunt procedures in infancy cause reduced handgrip strength in adulthood and diminished handgrip strength of the ipsilateral site.

Correlation of handgrip strength with quality of life in elderly patients

The quality of life of elderly people decreases with age and is adversely affected by sarcopenia (decreased muscle mass, muscle strength, and physical activity) and chronic degenerative diseases. Assessment of handgrip strength is used for screening for sarcopenia. Handgrip strength is expected to predict the quality of life of elderly people. In this study, we aimed to assess the correlation of handgrip strength (measured using Jamar dynamometer) with the quality of life (measured using the EQ-5D and EQ-5D VAS questionnaires) of elderly patients. This cross-sectional study was conducted on 123 elderly patients at the Geriatric Outpatient Cipto Mangunkusumo Hospital. Findings of the Spearman test showed a significant correlation of handgrip strength with quality of life as measured using the EQ-5D questionnaire (r = 0.219; p = 0.015) and EQ-5D VAS questionnaire (r = 0.266; p = 0.003). In conclusion, a significant correlation was observed between handgrip strength and the quality of life of elderly patients.

Effectiveness of virtual reality treatment after flexor tendon surgery: Preliminary results

Biofeedback can improve the effectiveness of an intervention as a helpful tool in the physiological process of rehabilitation. In our study, we aimed to investigate the efficacy of Virtual Reality (VR) in the rehabilitation of patients with flexor tendon repair. Twenty patients with flexor digitorum superficialis (FDS) and/or flexor digitorum profundus (FDP) tendon repair were included in the study and randomized into two groups: VR and traditional treatment. VR was administered with the HandTutor™ device from postoperative 8th week for 3 weeks, 3 sessions per week. Both groups were given splinting and progressively increased exercise as a home program. Before and after treatment, patients were assessed using the Disabilities of the Arm, Shoulder and Hand (DASH) outcome measure and hand grip strength was measured using a Jamar dynamometer. The Wilcoxon signed rank test was used to compare dependent variables and the Mann-Whitney U test was used to compare independent groups. The mean age of the patients was 35.4 ± 13.8 years. 10% of the patients had FDS, 40% had FDP, 50% had FDS and FDP tendon injuries. There was a significant decrease in DASH scores and a significant increase in hand grip strength in both VR ( P = 0.008) and traditional treatment groups ( P = 0.003). In between-group comparisons, no significant difference was found in DASH scores ( P = 0.110). However, the increase in hand grip strength was significantly greater in the VR treatment than that in the traditional treatment group ( P = 0.030). The results of this pilot study support the use of HandTutor™ with traditional therapy in hand rehabilitation after flexor tendon repair and warrant further studies with larger samples.

Reaction time and visual field are the most relevant factors of driving ability of motorized mobility scooters after stroke

Maintaining active community mobility and community participation are important instrumental activities of daily living, and are issues that occupational therapists concern about. The use of motorized mobility scooters (MMS) has grown in older people and disabled people to improve active community mobility. However, traffic accidents related to MMS driving increase. How to judge whether patients can drive MMS safely or not becomes an important issue. The objective of this study was to investigate the related factors of MMS driving ability. This study was a cross-sectional study to investigate the association between cognitive, visual, motor function and MMS driving performance. Inclusion criteria of subjects were diagnosis of stroke and Mini-Mental State Examination score ≥ 24. Cognition related measurements included Color Trails Test (CTT) and reaction time test. Visual function related measurements included visual acuity and visual field. Motor function related measurements included Jamar dynamometer and Box-and-Block Test. MMS driving performance was measured with Power Mobility Clinical Driving Assessment Tool (PMCDA). Thirty participants with stroke were recruited (age 63.8 ± 13.4 years old). There were significant associations between CTT (rho = −0.40, P = 0.03), reaction time (rho = −0.66, P < 0.01), visual acuity (rho = 0.42, P = 0.02), visual field (rho = 0.63, P < 0.01), Jamar dynamometer (rho = 0.48, P = 0.01) and PMCDA. The stepwise multiple regression analyses found that reaction time (Beta = −0.44, P = 0.01) and visual field (Beta = 0.37, P = 0.03) were the significant related factors of PMCDA (adjusted R2 = 0.30). There were various levels of association between cognitive, visual, motor function and MMS driving performance. Reaction time and visual field were the most relevant factors especially. The finding of this study could provide professionals an efficient method to determine MMS driving ability from cognitive and visual function of stroke patients.

Muscle, Health and Costs: A Glance at their Relationship

ObjectiveTo assess the association between muscle parameters (mass, strength, physical performance) and activities of daily living (ADL), quality of life (QoL), and health care costs.DesignCross-sectional Maastricht Sarcopenia Study (MaSS).SettingCommunity-dwelling, assisted-living, residential living facility.Participants227 adults aged 65 and older.MeasurementsMuscle mass, hand grip strength and physical performance were assessed by bio-electrical impedance, JAMAR dynamometer and the Short Physical Performance Battery, respectively. Health outcomes were measured by the Groningen Activity Restriction Scale (disability in ADL) and the EQ-5D-5L (QoL). Health care costs were calculated based on health care use in the past three months.ResultsMuscle strength and physical performance showed a strong correlation with ADL, QoL, and health care costs (P<.01); for muscle mass no significant correlations were observed. Regression analyses showed that higher gait speed (OR 0.06, 95%CI 0.01-0.55) was associated with a lower probability of ADL disability. Furthermore, slower chair stand (OR 1.23, 95%CI 1.08-1.42), and more comorbidities (OR 1.58, 95%CI 1.23-2.02) were explanatory factors for higher ADL disability. Explanatory factors for QoL and costs were: more disability in ADL (OR 1.26, 95%CI 1.12-1.41 for QoL; B = 0.09, P<.01 for costs) and more comorbidities (OR 1.44, 95%CI 1.14-1.82 for QoL; B = 0.35, P<.01 for costs).ConclusionLower gait speed and chair stand were potential drivers of disability in ADL. Disability in ADL and comorbidities were associated with QoL and health care costs in community-dwelling older adults. Improving physical performance may be a valuable target for future intervention and research to impact health burden and costs.

Associations Between Lean Mass, Muscle Strength and Power, and Skeletal Size, Density and Strength in Older Men.

Studies examining the relationship between muscle parameters and bone strength have not included multiple muscle measurements and/or both central and peripheral skeletal parameters. The purpose of this study was to explore the relationship between lean mass, muscle strength and power, and skeletal size, bone density, and bone strength. We studied the association between appendicular lean mass (ALM), grip strength, and leg power, and central quantitative computed tomography (QCT) parameters in 2857 men aged 65 years or older; peripheral QCT was available on a subset (n = 786). ALM, grip strength, and leg power were measured by dual-energy X-ray absorptiometry (DXA), Jamar dynamometer, and the Nottingham Power Rig, respectively. Multivariable models adjusting for potential confounders including age, race, study site, BMI, and muscle measurements were developed and least squares means were generated from linear regression models. For the multivariable model, percent differences of bone parameters between lowest (Q1) and highest quartiles (Q4) of ALM, grip strength, and leg power were reported. ALM was significantly associated with central and peripheral QCT parameters: percent higher values (Q4 versus Q1) ranging from 3.3% (cortical volumetric bone mineral density [vBMD] of the femoral neck) to 31% (vertebral strength index of the spine). Grip strength was only significantly associated with radial parameters: percent higher values (Q4 versus Q1) ranging from 2.5% (periosteal circumference) to 7.5% (33% axial strength index [SSIx]). Leg power was associated with vertebral strength and lower cross-sectional area with percent lower values (Q4 versus Q1) of -11.9% and -2.7%, respectively. In older men, stronger associations were observed for ALM compared to muscle strength and power. Longitudinal studies are needed to examine the relationship between independent changes in muscle measurements and skeletal size, density and strength. © 2018 American Society for Bone and Mineral Research.

The Effect of Simulated Total Distal Interphalangeal Joint Stiffness on Grip Strength

Production of a functional grip pattern requires the concerted action of numerous structures within the hand. This study quantifies the effect of total distal interphalangeal joint (DIPJ) stiffness to grip strength. Fifty (25 men, 25 women, 100 hands) individuals with a mean age of 38 years (range: 17-69 years) were recruited. Exclusion criteria included history of previous upper limb injury, neuropathies, or systemic disease. Custom thermoplastic orthoses were used to splint participants' DIPJ in full extension simulating stiffness. Grip strength before and after splinting was measured using a calibrated Jamar dynamometer. Data were analyzed using paired and independent sample t tests and 2 × 2 repeated-measures analysis of variance with hand dominance and configuration (splinted or unsplinted) as within-subject factors. Restriction of DIPJ flexion led to a 20% decrease in grip strength (P < .001). There was no significant difference in this decrease between dominant and non-dominant hands. Univariate analysis did not demonstrate any interaction between hand dominance and testing configuration. Post hoc analysis revealed no statistical difference in baseline grip strength between the dominant and non-dominant hands. Furthermore, men had significantly stronger grip strength than women in all configurations (P < .001). Flexion at the DIPJ contributes significantly to grip strength, and stiffness at this joint greatly limits functional capabilities of the hand. This necessitates the need for targeted rehabilitation in DIPJ injuries to minimize adverse effects on grip strength.

Function in unaffected arms of children with obstetric brachial plexus palsy.

The objective is to compare the fine and gross motor function of unaffected arms of children with obstetric brachial plexus palsy (OBBP) with typically developing children's dominant upper extremities. Fifty-three patients with OBBP and fifty-one typically developing children between the age of 4 and 13 were included in the study. For gross motor function evaluation in the upper extremity box-block test (BBT), for fine motor skill nine-hole peg (9HP) test was used. For grasp and pinch strength measurements, a Jamar dynamometer is used. The patient group performed significantly worse in 9HP and BBT tests. When further divided into age groups, 4-8 age patient group performed significantly worse in 9HP and BBT tests, while there were no differences in children in the 9-13 age group. The fine and gross motor functions of the unaffected arms of children with OBPP are significantly worse in children between the ages of four and eight but this deficit improves with age, and possibly with ongoing therapy.

Results after arthroscopic treatment of central traumatic lesions of the triangular fibrocartilage complex.

Injuries of the triangular fibrocartilage complex (TFCC) are of high clinical relevance; however, the clinical evidence for treatment is poor and long-term results are rarely published. The purpose of this study was to evaluate the clinical outcome of symptomatic central traumatic lesions of the TFCC (Palmer 1A) following arthroscopic debridement. Between 2007 and 2013, 87 patients were arthroscopically diagnosed with Palmer 1A lesion and accordingly treated with debridement. Follow-up was available for 43 patients. Activities of daily living (ADLs) were measured with the Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire. Pain perception was evaluated with visual analogue scale (VAS 0-10). Grip strength and wrist motion were assessed with conventional techniques using a Jamar dynamometer and a goniometer. Patient satisfaction was assessed using a questionnaire at follow-up. Mean follow-up was 42.5months (range 5-70). The mean age of the patients (22 male and 21 female) at time of surgery was 41 ± 15.9years. No major complication occurred during surgery and follow-up. The DASH score (preoperatively 49.8 ± 19.3 vs. postoperatively 14.1 ± 17.9, p < 0.05) and pain perception (VAS: preoperatively 7.2 ± 2.0 vs. postoperatively 1.4 ± 1.6, p < 0.05) improved significantly. Grip strength was satisfactory after surgery (19.6 ± 13.1). Ulnar deviation improved significantly from 29.3 ± 10.4° to 35.6 ± 8.3° (p < 0.05) and wrist flexion improved from 53.8 ± 18.9° to 67.4 ± 12.9° (p < 0.05). Wrist extension, radial deviation, pronation and supination did not change significantly after surgery. Improved symptoms were reported by 41/43 (95.3%) patients and 40/43 (93%) patients would have had the same procedure again knowing the final outcome. Six of 43 patients (15%) had an ulnar plus variance. None of these needed ulnar shortening. Central traumatic TFCC lesions can safely be treated by arthroscopic debridement. We showed a sustained pain relief with significantly improved quality of life (DASH score) and wrist motion at follow-up. This resulted in a high patient satisfaction and acceptance of the procedure. Therapeutic, level IV.

Parameters influencing hand grip strength measured with the manugraphy system

BackgroundThis study aimed to determine whether sex, hand length and the individual training status affect hand strength and whether these measurements differ if they are recorded using the Jamar dynamometer or a new cylindrical measuring system.MethodsFor this purpose, 152 healthy adults were examined using a new manugraphy measuring system (novel, Munich, Germany) comprising two measuring cylinders of different sizes and a Jamar electronic dynamometer with two grip positions corresponding approximately to the sizes of the cylinders. A descriptive analysis was performed as well as a correlation analysis using the Pearson correlation coefficient. To prepare predictive models, multiple linear regression analyses were carried out to determine factors that influence the force and p ≤ 0.05 was considered statistically significant.ResultsA significant difference in the maximum and mean strength was observed that is dependent on sex, with men stronger than women, in line with expectations, and hand length, with small hands able to exert less force than large hands. No consistent increase in strength could be attributed to repetitive manual loads applied either at work or in leisure activities.ConclusionsBoth measurement techniques yielded similar results, suggesting that manugraphy is well suited for clinical research purposes because it not only takes measurements that are just as reproducible and valid as the conventional measurement technique but in doing so measures not just the total strength of a hand but also enables more precise comparisons of isolated hand regions applying dynamic measurements.

Forearm Torque and Lifting Strength: Normative Data.

To establish reference values for new methods designed to quantitatively measure forearm torque and lifting strength and to compare these values with grip strength. A total of 499 volunteers, 262 males and 237 females, aged 15 to 85 (mean, 44) years, were tested for lifting strength and forearm torque with the Kern and Baseline dynamometers. These individuals were also tested for grip strength with a Jamar dynamometer. Standardized procedures were used and information about sex, height, weight, hand dominance, and whether their work involved high or low manual strain was collected. Men had approximately 70% higher forearm torque and lifting strength compared with females. Male subjects aged 26 to 35 years and female subjects aged 36 to 45 years showed highest strength values. In patients with dominant right side, 61% to 78% had a higher or equal strength on this side in the different tests performed. In patients with dominant left side, the corresponding proportions varied between 41% and 65%. There was a high correlation between grip strength and forearm torque and lifting strength. Sex, body height, body weight, and age showed a significant correlation to the strength measurements. In a multiple regression model sex, age (entered as linear and squared) could explain 51% to 63% of the total variances of forearm torque strength and 30% to 36% of lifting strength. Reference values for lifting strength and forearm torque to be used in clinical practice were acquired. Grip strength has a high correlation to forearm torque and lifting strength. Sex, age, and height can be used to predict forearm torque and lifting strength. Prediction equations using these variables were generated. Normative data of forearm torque and lifting strength might improve the quality of assessment of wrist and forearm disorders as well as their treatments.

Normative reference values for hand grip dynamometry in Spain. Association with lean mass.

The objective of this study was to establish reference values for hand grip strength, compare the results obtained with Collin and Jamar type dynamometers and determine their association with anthropometric and lean mass measurements. This cross-sectional population-based study was undertaken in Pizarra (Málaga, Spain). The grip strength of the dominant hand was measured using Collin and Jamar dynamometers. Skinfolds (triceps, abdominal, biceps of dominant arm and subscapular) were measured, and body composition was estimated. Eight hundred seventeen adults randomly selected from the census were recruited. Dynamometry reference values are presented for the dominant hand, by gender and age groups. No determinations could be made with the Collin dynamometer in 69 women due to the difficulty in grasping the dynamometer. We found significant positive correlations between the measurements with Jamar and Collin dynamometers (r = 0.782; p < 0.001) and between grip strength and lean mass index (LMI), determined by both dynamometers (r = 0.538, p < 0.001 and r = 0.462, p < 0.001, respectively). Malnourished patients according to LMI had significantly lower grip strength than normally nourished patients (p < 0.001 for Jamar; p < 0.02 for Collin). Dynamometry reference values in the Spanish population are presented. We recommend the use of the Jamar type dynamometer versus the Collin type dynamometer. Hand grip dynamometry is associated with lean mass, which confirms its usefulness in nutritional assessment.

Usability of Videogame-Based Dexterity Training in the Early Rehabilitation Phase of Stroke Patients: A Pilot Study.

Approximately 70-80% of stroke survivors have limited activities of daily living, mainly due to dexterous problems. Videogame-based training (VBT) along with virtual reality seems to be beneficial to train upper limb function. To evaluate the usability of VBT using the Leap Motion Controller (LMC) to train fine manual dexterity in the early rehabilitation phase of stroke patients as an add-on to conventional therapy. Additionally, this study aimed to estimate the feasibility and potential efficacy of the VBT. During 3 months, 64 stroke patients were screened for eligibility, 13 stroke patients were included (4 women and 9 men; age range: 24-91 years; mean time post stroke: 28.2 days). Nine sessions of 30 min VBT, three times per week as an add-on to conventional therapy with stroke inpatients. Primary outcome was the usability of the system measured with the System Usability Scale. Secondary outcomes concerning feasibility were the compliance rate calculated from the total time spent on the intervention (TT) compared to planned time, the opinion of participants via open-end questions, and the level of active participation measured with the Pittsburgh Rehabilitation Participation Scale. Regarding the potential efficacy secondary outcomes were: functional dexterity measured with the Nine Hole Peg Test (NHPT), subjective dexterity measured with the Dexterity Questionnaire 24, grip strength measured with the Jamar dynamometer, and motor impairment of the upper limb measured with the Fugl-Meyer Upper Extremity (FM-UE) scale. Primarily, the usability of the system was good to excellent. The patient's perception of usability remained stable over a mean period of 3 weeks of VBT. Secondly, the compliance rate was good, and the level of active participation varied between good and very good. The opinion of the participants revealed that despite individual differences, the overall impression of the therapy and device was good. Patients showed significant improvements in hand dexterity. No changes were found in motor impairment of the upper limb (FM-UE) during intervention. VBT using LMC is a usable rehabilitation tool to train dexterity in the early rehabilitation phase of stroke inpatients.

Comparison of Neuroplastic Responses to Cathodal Transcranial Direct Current Stimulation and Continuous Theta Burst Stimulation in Subacute Stroke

ObjectiveTo investigate the effects of cathodal transcranial direct current stimulation (tDCS) and continuous theta burst stimulation (cTBS) on neural network connectivity and motor recovery in individuals with subacute stroke. DesignDouble-blinded, randomized, placebo-controlled study. SettingUniversity hospital rehabilitation unit. ParticipantsInpatients with stroke (N=41; mean age, 65y; range, 28–85y; mean weeks poststroke, 5; range, 2–10) with resultant paresis in the upper extremity (mean Fugl-Meyer score, 14; range, 3–48). InterventionsSubjects with stroke were randomly assigned to neuronavigated cTBS (n=14), cathodal tDCS (n=14), or sham transcranial magnetic stimulation/sham tDCS (n=13) over the contralesional primary motor cortex (M1). Each subject completed 9 stimulation sessions over 3 weeks, combined with physical therapy. Main Outcome MeasuresBrain function was assessed with directed and nondirected functional connectivity based on high-density electroencephalography before and after stimulation sessions. Primary clinical end point was the change in slope of the multifaceted motor score composed of the upper extremity Fugl-Meyer Assessment score, Box and Block test score, 9-Hole Peg Test score, and Jamar dynamometer results between the baseline period and the treatment time. ResultsNeither stimulation treatment enhanced clinical motor gains. Cathodal tDCS and cTBS induced different neural effects. Only cTBS was able to reduce transcallosal influences from the contralesional to the ipsilesional M1 during rest. Conversely, tDCS enhanced perilesional beta-band oscillation coherence compared with cTBS and sham groups. Correlation analyses indicated that the modulation of interhemispheric driving and perilesional beta-band connectivity were not independent mediators for functional recovery across all patients. However, exploratory subgroup analyses suggest that the enhancement of perilesional beta-band connectivity through tDCS might have more robust clinical gains if started within the first 4 weeks after stroke. ConclusionsThe inhibition of the contralesional M1 or the reduction of interhemispheric interactions was not clinically useful in the heterogeneous group of subjects with subacute stroke. An early modulation of perilesional oscillation coherence seems to be a more promising strategy for brain stimulation interventions.

The mortality determinants of sarcopenia and comorbidities in hospitalized geriatric patients.

Objectives:Determine the influence of muscle mass, muscle strength, physical performance, nutritional status and certain comorbidities on the four years mortality risk of hospitalized geriatric patients.Design:Retrospective cohort study.Setting:During hospitalization of the included geriatric patients, the determinants of sarcopenia and nutritional status were obtained.Participants:A total of 302 patients hospitalized at the geriatric department of the Saint-Elisabeth hospital in Antwerp (Belgium) from 01/08/2012 until 31/01/2013.Measurements:Muscle mass was measured using a CT scan. The muscle strength was obtained by measuring the handgrip strength using a Jamar dynamometer. The physical performance was measured by performing the SPPB. The nutritional status was surveyed by using the MNA-SF. Comorbidities were obtained through medical records.Results:The variables gender (HR= 0.609; 95% CI 0.442-0.838), nutritional status (HR= 2.953; 95% CI 1.924-4.531), muscle mass (HR= 0.443; 95% CI 0.251-0.780), muscle strength (HR= 0.215; CI 95% 0.079-0.587), physical performance (HR= 0.407; 95% CI 0.237-0.702) and heart failure (HR= 1.440; 95% CI 1.022-2.029) have been shown to be significant.Conclusion:The determinants gender, nutritional status and physical performance have the greatest prognostic value.

Fuerza de agarre en trabajadores sanos de Manizales

El objetivo del presente estudio fue describir la fuerza de agarre en una muestra de trabajadores sanos de Manizales y evaluar posibles asociaciones con la edad, el género, la ocupación y la dominancia. Participaron 199 trabajadores sanos (39,8 ± 11,5 años), 53,8% de género femenino. La fuerza se midió por triplicado con un dinamómetro Jamar, el logaritmo natural (ln) de ese promedio fue la variable de salida. Como variables explicatorias se incluyeron género, edad, ocupación y dominancia. Para el análisis bivariado se usó la prueba signo con rango de Wilcoxon. Las asociaciones se evaluaron aplicando modelos de regresión lineal simple y múltiple para estimar los coeficientes de regresión ( β ) y su error estándar. Nivel de significancia α =0,05. Se encontró una diferencia de 3,52 Kg/Fza (IC95% 2,9;4,1) a favor de la fuerza de la mano derecha comparada con la izquierda. La diferencia por género fue de 9,17 Kg/Fza (IC95% 6,5;11,8) y de 11,4 Kg/Fza (IC95% 9,04;13,7) para la mano derecha e izquierda, respectivamente, ambas a favor de los hombres. El análisis de regresión múltiple mostró coeficientes significativos (p&lt;0,0001) para el género masculino ( β = 0,39 y 0,31) en el ln de la fuerza de las manos izquierda y derecha, respectivamente. Se detectó una tendencia significativa (p&lt;0,0001) a la disminución del ln de la fuerza por cada año de incremento de la edad en ambas manos ( β -0,010). No se encontraron asociaciones con la ocupación ni con la dominancia. Estos resultados muestran cambios en la fuerza de agarre asociados con la edad y género.

Elaboración de estándares de la fuerza de agarre en individuos sanos entre 20 y 70 años residentes en la localidad de Usaquén, Bogotá

El propósito de la presente investigación fue elaborar los estándares de la fuerza de agarre en individuos sanos entre 20 y 70 años residentes de la localidad de Usaquén en Bogotá. Se evaluó la fuerza de agarre en una muestra aleatoria estratificada de ambos géneros conformada por 385 personas de los 6 estratos socioeconómicos. Este trabajo es de tipo descriptivo evaluativo. Se utilizaron 2 posiciones de medida, la primera denominada A es la que describe la Sociedad Americana de Cirugía de la Mano con el codo en 90º de flexión; la segunda denominada posición B en la que el codo está extendido en 0º. Para realizar las mediciones se utilizó el dinamómetro Jamar. Como resultados del trabajo se presentan dos tablas con los estándares de la fuerza del agarre en las dos posiciones para la muestra de población colombiana y una tabla comparativa con los valores de la población norteamericana.

Muscle strength, functional endurance, and health-related quality of life in active older female golfers

BackgroundGrip strength is a reliable predictor of whole body strength in older adults, but muscle characteristics of people with different activity levels have not been studied previously. The present study examined the relationship between grip strength (GS), quadriceps peak torque (QPT), functional endurance, and health-related quality of life (HRQoL) in older female golfers.MethodsTwenty-nine healthy female golfers (mean age 69.1 years, SD 3.4) participated. The ISOCOM and JAMAR dynamometers were used to assess QPT and GS, respectively. Functional endurance tests included 1-min sit-to-stand test (1MSTS), 30-s wall press (30SWP), and 2-min stair climb (2MSC). HRQol was assessed using the SF-36 questionnaire.ResultsMean GS and QPT were 27.5 ± 4 kg/f and 103.7 ± 25.1 N m, respectively. Mean scores for the 1MSTS, 30SWP, and 2MSC were 31 ± 7.7, 17.4 ± 3.5, and 237.5 ± 48.6 repetitions, respectively. GS was moderately correlated with QPT (r = 0.44), 1MSTS (r = 0.36), and 2MSC (r = 0.36), but had weak correlation with 30SWP (r = 0.003). Moderate correlation was observed between quadriceps peak torque and the 1MSTS (r = 0.50; p = 0.01), 2MSC (r = 0.44; p = 0.02) and 30SWP (r = 0.33). 30SWP and 2MSC had moderate correlations with PF r = 0.41 (p = 0.03) and r = 0.61 (p < 0.0005) and general physical well-being r = 0.47 (p = 0.01) and r = 0.39 (p = 0.04), respectively.ConclusionQuadriceps strength was more closely associated with functional endurance than grip strength. A single strength measure may not reflect overall muscle characteristics in active older females, and hence, assessment of both upper and lower limb strengths may be appropriate.

Sarcopenia in patients with hip fracture: A multicenter cross-sectional study.

BackgroundSarcopenia is prevalent in older persons and is a risk factor for falls, fractures, and mortality. The aim of this study was to determine a) the feasibility of determining sarcopenia in patients with acute hip fracture, b) the prevalence of sarcopenia and c) associations of sarcopenia with nutritional status and comorbidities.MethodsA multicenter cross-sectional study on sarcopenia in male and female patients with acute hip fracture. Participants were previously ambulatory and living in the community. Sarcopenia was assessed postoperatively with muscle mass estimated by anthropometry using triceps skinfold, arm circumference, height, weight and sex. Grip strength was measured by Jamar dynamometer and pre-fracture mobility was by self-report using the New Mobility Score.ResultsOut of 282 patients, 202 were assessed for sarcopenia of whom 74 (37%) were diagnosed as sarcopenic. Sarcopenia was associated with age, odds ratio (OR) 1.4 per 5 years, 95% confidence interval (CI) [1.1, 1.8], ASA Physical Status Classification System score, OR 2.3 per point, 95% CI [1.3, 4.3] and number of medications at discharge, OR 1.2 per medication, 95% CI [1.0, 1.3] and inversely associated with BMI, OR 0.8, 95% CI [0.7, 0.9] and serum albumin, OR 0.9, 95% CI [0.8,1.0].ConclusionsThirty-seven percent of assessed subjects were diagnosed with sarcopenia. Our data demonstrates that the prevalence of sarcopenia is associated with older age, malnutrition and comorbidities. Determining sarcopenia at the bedside was feasible in postoperative hip fracture patients by using grip strength, estimation of muscle mass by anthropometry and self-reported mobility.