The Experts below are selected from a list of 243 Experts worldwide ranked by ideXlab platform
Jennifer Paratz - One of the best experts on this subject based on the ideXlab platform.
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measuring muscle strength for people with chronic obstructive pulmonary disease retest reliability of hand held dynamometry
Archives of Physical Medicine and Rehabilitation, 2007Co-Authors: Simone D Oshea, Nicholas F Taylor, Jennifer ParatzAbstract:Abstract O'Shea SD, Taylor NF, Paratz JD. Measuring muscle strength for people with chronic obstructive pulmonary disease: retest reliability of hand-held dynamometry. Objective To evaluate the retest reliability and quantify the degree of measurement error when measuring isometric muscle strength with a hand-held dynamometer for people with chronic obstructive pulmonary disease (COPD). Design Retest reliability of hand-held dynamometry for 4 muscle groups was assessed on 2 occasions separated by a 2-week interval. Setting Community rehabilitation center. Participants Eight men and 4 women (mean age ± standard deviation, 71.4±10.3y) with moderately severe COPD (percentage of predicted forced expiratory volume in 1 second, 41.5%±17.7%). Interventions Not applicable. Main Outcome Measures Muscle strength (in kilograms). Statistical analysis was conducted by calculating intraclass correlation coefficients and 95% confidence intervals for both group and individual scores. Results All reliability coefficients were greater than .79. Muscle strength would need to increase by between 4% and 18% in groups of people with COPD and between 34% and 58% in a person with COPD to be 95% confident of detecting real changes. Conclusions Hand-held dynamometry is suitable for monitoring change in muscle strength and testing hypotheses for groups of people with COPD. However, hand-held dynamometry is not likely to detect changes in muscle strength for a person with COPD.
Joao Eduardo De Araujo - One of the best experts on this subject based on the ideXlab platform.
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Electromyographic and strength analyses of activation patterns of the wrist flexor muscles after acupuncture.
Journal of acupuncture and meridian studies, 2014Co-Authors: Marília Silva Zanin, Juliana Morales Ronchi, Tainan De Castro Silva, Amanda C. Fuzaro, Joao Eduardo De AraujoAbstract:This study analyzed the electromyographic and strength responses of the flexor muscles of the wrist following stimulation of acupuncture points. A total of 52 participants were randomly divided into four groups: local (heart 3, HT3), distant (heart 4, HT4), control (bladder 60, BL60), and naïve control groups. To obtain the root mean square electromyographic activity, we placed surface electrodes over the wrist flexors. To obtain kilogram force (kgf) values, we attached a force transducer to the floor and to the hands of participants. Both values were recorded over three repetitions of maximal isometric wrist flexion contractions. Data were analyzed using one-way analyses of variance, followed by Dunnett's post-hoc tests. We found reductions in electromyographic activity contralateral to the stimulated point in the distant group 10 minutes after removal of the needles (F(3,48) = 3.25; p < 0.05). Regarding muscle strength, ipsilateral and contralateral stimulation in the distant group produced kgf levels prior to and 10 minute and 20 minutes after withdrawal of the acupuncture needle that were lower than that obtained prior to insertion of the needle (F(3,48) = 5.82; p < 0.05). Thus, stimulation of the acupuncture points distant from the wrist flexors reduced ipsilateral and contralateral muscle strength and decreased the root mean square values contralateral to the site of stimulation.
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the immediate effects of local and adjacent acupuncture on the tibialis anterior muscle a human study
Chinese Medicine, 2008Co-Authors: Larissa Araujo Costa, Joao Eduardo De AraujoAbstract:This study compares the immediate effects of local and adjacent acupuncture on the tibialis anterior muscle and the amount of force generated or strength in Kilogram Force (KGF) evaluated by a surface electromyography. The study consisted of a single blinded trial of 30 subjects assigned to two groups: local acupoint (ST36) and adjacent acupoint (SP9). Bipolar surface electrodes were placed on the tibialis anterior muscle, while a force transducer was attached to the foot of the subject and to the floor. An electromyograph (EMG) connected to a computer registered the KGF and root mean square (RMS) before and after acupuncture at maximum isometric contraction. The RMS values and surface electrodes were analyzed with Student's t-test. Thirty subjects were selected from a total of 56 volunteers according to specific inclusion and exclusion criteria and were assigned to one of the two groups for acupuncture. A significant decrease in the RMS values was observed in both ST36 (t = -3.80, P = 0,001) and SP9 (t = 6.24, P = 0.001) groups after acupuncture. There was a decrease in force in the ST36 group after acupuncture (t = -2.98, P = 0.006). The RMS values did not have a significant difference (t = 0.36, P = 0.71); however, there was a significant decrease in strength after acupuncture in the ST36 group compared to the SP9 group (t = 2.51, P = 0.01). No adverse events were found. Acupuncture at the local acupoint ST36 or adjacent acupoints SP9 reduced the tibialis anterior electromyography muscle activity. However, acupuncture at SP9 did not decrease muscle strength while acupuncture at ST36 did.
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The immediate effects of local and adjacent acupuncture on the tibialis anterior muscle: a human study
Chinese Medicine, 2008Co-Authors: Larissa Araujo Costa, Joao Eduardo De AraujoAbstract:Background: This study compares the immediate effects of local and adjacent acupuncture on the tibialis anterior muscle and the amount of force generated or strength in Kilogram Force (KGF) evaluated by a surface electromyography. Methods: The study consisted of a single blinded trial of 30 subjects assigned to two groups: local acupoint (ST36) and adjacent acupoint (SP9). Bipolar surface electrodes were placed on the tibialis anterior muscle, while a force transducer was attached to the foot of the subject and to the floor. An electromyograph (EMG) connected to a computer registered the KGF and root mean square (RMS) before and after acupuncture at maximum isometric contraction. The RMS values and surface electrodes were analyzed with Student's t-test. Results: Thirty subjects were selected from a total of 56 volunteers according to specific inclusion and exclusion criteria and were assigned to one of the two groups for acupuncture. A significant decrease in the RMS values was observed in both ST36 (t = -3.80, P = 0,001) and SP9 (t = 6.24, P = 0.001) groups after acupuncture. There was a decrease in force in the ST36 group after acupuncture (t = -2.98, P = 0.006). The RMS values did not have a significant difference (t = 0.36, P = 0.71); however, there was a significant decrease in strength after acupuncture in the ST36 group compared to the SP9 group (t = 2.51, P = 0.01). No adverse events were found. Conclusion: Acupuncture at the local acupoint ST36 or adjacent acupoints SP9 reduced the tibialis anterior electromyography muscle activity. However, acupuncture at SP9 did not decrease muscle strength while acupuncture at ST36 did.
Simone D Oshea - One of the best experts on this subject based on the ideXlab platform.
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measuring muscle strength for people with chronic obstructive pulmonary disease retest reliability of hand held dynamometry
Archives of Physical Medicine and Rehabilitation, 2007Co-Authors: Simone D Oshea, Nicholas F Taylor, Jennifer ParatzAbstract:Abstract O'Shea SD, Taylor NF, Paratz JD. Measuring muscle strength for people with chronic obstructive pulmonary disease: retest reliability of hand-held dynamometry. Objective To evaluate the retest reliability and quantify the degree of measurement error when measuring isometric muscle strength with a hand-held dynamometer for people with chronic obstructive pulmonary disease (COPD). Design Retest reliability of hand-held dynamometry for 4 muscle groups was assessed on 2 occasions separated by a 2-week interval. Setting Community rehabilitation center. Participants Eight men and 4 women (mean age ± standard deviation, 71.4±10.3y) with moderately severe COPD (percentage of predicted forced expiratory volume in 1 second, 41.5%±17.7%). Interventions Not applicable. Main Outcome Measures Muscle strength (in kilograms). Statistical analysis was conducted by calculating intraclass correlation coefficients and 95% confidence intervals for both group and individual scores. Results All reliability coefficients were greater than .79. Muscle strength would need to increase by between 4% and 18% in groups of people with COPD and between 34% and 58% in a person with COPD to be 95% confident of detecting real changes. Conclusions Hand-held dynamometry is suitable for monitoring change in muscle strength and testing hypotheses for groups of people with COPD. However, hand-held dynamometry is not likely to detect changes in muscle strength for a person with COPD.
A. O. Batogun - One of the best experts on this subject based on the ideXlab platform.
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Intra- and inter-tester reliability of the Nicholas® hand-held dynamometer during evaluation of upper extremity isometric muscle strength
European journal of physical medicine and rehabilitation, 1998Co-Authors: Joseph A. Balogun, R. Powett, B. Truttender, S. Otson, A. O. BatogunAbstract:The purpose of this study was to determine the reproducibility of the Nicholas® hand-held dynamometer. The isometric strength of the upper extremity (shoulder flexors and abductors, elbow flexors and extensors) muscles of 20 (3 men and 17 women) healthy young (24.8 ± 5.4 years) subjects were measured by two inexperienced testers. At each testing session, testers obtained two measurements for each muscle group. Subjects returned approximately one week later for the second testing session. The intra class correlation coefficient (ICC) for the intratester day to day values ranged from 0.75 to 0.94. Between testers day to day ICC values ranged from 0.72 to 0.97. The standard error of measurement (SEMI values obtained for shoulder flexors, 0.53 to 0.97 kilogram force (kgf) are fairly consistent, while the other 3 muscle groups tested demonstrated more fluctuating values. Shoulder abductors strength ranged from 0.66 to 1.09 kgf, whereas, elbow flexors and extensors strength ranged from 1.79 to 2.41 kgf and 1.02 to 2.07 kgf, respectively. The findings revealed that clinicians can obtain reliable measurement of upper extremity muscle strength with the Nicholas hand-held dynamometer.
Daniel Berglind - One of the best experts on this subject based on the ideXlab platform.
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Birth weight and grip strength in young Swedish males: a longitudinal matched sibling analysis and across all body mass index ranges.
Scientific reports, 2019Co-Authors: Viktor H. Ahlqvist, Margareta Persson, Francisco B. Ortega, Per Tynelius, Cecilia Magnusson, Daniel BerglindAbstract:Low birth weight is associated with a lower grip strength later in life. However, associations between birth weight among infants born at-term and factors driving associations between birth weight and grip strength are largely unknown. A cohort of 144,369 young men born at-term, including 10,791 individuals who had at least one male sibling/s, were followed until conscription where they performed a grip strength test. We used linear and non-linear regression analyses in the full cohort, and fixed-effects regression analyses in the sibling cohort, to address confounding by factors that are shared between siblings. After adjustment, each unit increase in birth weight z-score was associated with increases of 17.7 (95% CI, 17.2-18.2) and 13.4 (10.1-16.6) newton grip strength, which converts to approximately 1.8 and 1.4 Kilogram-Force in the full and within-families cohorts, respectively. The associations did not vary with young adulthood BMI. Birth weight, within the at-term range, is robustly positively associated with grip strength in young adulthood among men across all BMI categories and associations appears to be mainly driven by factors that are not shared between siblings. These findings underline the importance of recognizing the influence of low birth weight, also within the at-term-range, on young adulthood muscle strength.
