scholarly journals Grip strength after forearm cooling in healthy subjects

2016 ◽  
Vol 29 (4) ◽  
pp. 685-692 ◽  
Author(s):  
Pedro Henrique Reis Rabelo ◽  
Kárenn Klycia Pereira Botelho ◽  
Franassis Barbosa de Oliveira
Keyword(s):  
Muscle Strength ◽  
Ambient Temperature ◽  
Grip Strength ◽  
Skin Surface ◽  
Recovery Phase ◽  
Healthy Individuals ◽  
Time Intervals ◽  
Before And After ◽  
Maximum Grip Strength ◽  
Ice Water

Abstract Introduction: Muscle strength has shown different responses to the cooling of neuromuscular tissue and its behavior is still unclear. Objective: To verify the behavior of maximum grip strength before and after forearm cooling. Methods: The cooling intervention consisted of immersing the forearm up to the elbow in water cooled to 10° C. Grip strength was assessed using a dynamometer prior to cooling, immediately after immersion, and at 5, 10 and 30 minutes of forearm exposure to ambient temperature (recovery phase) concomitantly to measurement of skin surface temperature. The sample consisted of 30 healthy individuals. Results: Grip strength decreased significantly (p < 0.05) between the period prior to cooling and all the time intervals following immersion in ice water. There was also a gradual increase in grip strength during the recovery phase, with significant differences (p < 0.05) between the mean immediately after immersion and means at 5, 15 and 30 minutes after exposure to ambient temperature. Conclusion: The results indicate that immersion in ice water (10ºC) for 15 minutes significantly reduced (p < 0.05) grip strength for up to 30 minutes after forearm cooling. Strength also recovered progressively after removal of the cold stimulus. Further research is needed to obtain definitive results regarding the effects of cooling on muscle strength in healthy individuals.

scholarly journals Hyperammonemia results in reduced muscle function independent of muscle mass

2016 ◽  
Vol 310 (3) ◽  
pp. G163-G170 ◽  
Author(s):  
John McDaniel ◽  
Gangarao Davuluri ◽  
Elizabeth Ann Hill ◽  
Michelle Moyer ◽  
Ashok Runkana ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Muscle Strength ◽  
Muscle Fatigue ◽  
Grip Strength ◽  
Ex Vivo ◽  
Rate Of Force Development ◽  
Force Development ◽  
Cirrhotic Patients ◽  
Maximum Grip Strength ◽  
Maximum Grip

The mechanism of the nearly universal decreased muscle strength in cirrhosis is not known. We evaluated whether hyperammonemia in cirrhosis causes contractile dysfunction independent of reduced skeletal muscle mass. Maximum grip strength and muscle fatigue response were determined in cirrhotic patients and controls. Blood and muscle ammonia concentrations and grip strength normalized to lean body mass were measured in the portacaval anastomosis (PCA) and sham-operated pair-fed control rats ( n = 5 each). Ex vivo contractile studies in the soleus muscle from a separate group of Sprague-Dawley rats ( n = 7) were performed. Skeletal muscle force of contraction, rate of force development, and rate of relaxation were measured. Muscles were also subjected to a series of pulse trains at a range of stimulation frequencies from 20 to 110 Hz. Cirrhotic patients had lower maximum grip strength and greater muscle fatigue than control subjects. PCA rats had a 52.7 ± 13% lower normalized grip strength compared with control rats, and grip strength correlated with the blood and muscle ammonia concentrations ( r2 = 0.82). In ex vivo muscle preparations following a single pulse, the maximal force, rate of force development, and rate of relaxation were 12.1 ± 3.5 g vs. 6.2 ± 2.1 g; 398.2 ± 100.4 g/s vs. 163.8 ± 97.4 g/s; −101.2 ± 22.2 g/s vs. −33.6 ± 22.3 g/s in ammonia-treated compared with control muscle preparation, respectively ( P < 0.001 for all comparisons). Tetanic force, rate of force development, and rate of relaxation were depressed across a range of stimulation from 20 to 110 Hz. These data provide the first direct evidence that hyperammonemia impairs skeletal muscle strength and increased muscle fatigue and identifies a potential therapeutic target in cirrhotic patients.

scholarly journals Efficacy of Skin, Connective Tissue, Aponeurosis Galea, Loose Areolar Tissue, and Pericranium Acupuncture Techniques in Stroke Patients in Improving Muscle Strength of Motion Limbs

2020 ◽  
Vol 8 (A) ◽  
pp. 302-305
Author(s):  
Indri Seta Septadina ◽  
Erial Bahar
Keyword(s):  
Cerebral Cortex ◽  
Muscle Strength ◽  
Connective Tissue ◽  
Recovery Phase ◽  
Scalp Acupuncture ◽  
Areolar Tissue ◽  
Joint Motion ◽  
Stroke Patients ◽  
Muscle Testing ◽  
Before And After

BACKGROUND: Nowadays, more than 650,000 stroke survivors needed further therapy and treatment related to mild or severe relief caused by stroke. Defects that cause stroke lesions require more serious and longer handling and will be very burdensome for patients and health insurance. Acupuncture method in the head skin, connective tissue, aponeurosis galea, loose areolar tissue, and pericranium (SCALP) was known to be related to the function of the cerebral cortex known as Zhu’s scalp acupuncture. Stimulation on this point was believed can open blood vessels, and provides better blood flow so it could improve repair in stroke patient. AIM: This research aimed to prove the effectivity of needle sticking on SCALP to strengthen limb muscle in stroke patients. MATERIALS AND METHODS: This research used a quasi-experimental design, pre-test-post-test without control group. The subjects of this study were stroke patients who were in the recovery phase (after the critical period had passed) and who had an stroke attack <1 year. Sampling method of this study was consecutive sampling, namely, recovery post-stroke patients who were hospitalized or outpatient of all over hospitals in Palembang, Indonesia. In this study, needle pricking was performed in the cerebral motor cortex which is located in the anterior central sulcus. Stimulation is done 10 times for 2 weeks. Assessment of muscle strength in the upper and lower limbs was performed using manual muscle testing measurement before and after therapy. Analysis of muscle strength before and after cerebral cortex stimulation through needle pricking on the SCALP of the head was analyzed by t-test dependent using SPSS 18. Data were displayed in tabular form, with a significance of p < 0.05. RESULTS: Subjects of this study were eight people consisting of four men (50%) and four female patients (50%) who had passed the critical stroke and were in the recovery phase within a period of recovery <1 year after stroke attack. The number of subjects who experienced improvement in joint motion of each joint was much greater than the frequency of the number of subjects who had no improvement. About 90% of the study subjects felt improvement in joint motion of each joint. The improvement in muscle strength score almost doubled after being treated with SCALP acupuncture better than before treatment. CONCLUSION: SCALP acupuncture technique was effective in improving muscle strength of motion limbs on stroke patients.

scholarly journals The Effect of Priming With Questionnaire Content on Grip Strength in Patients With Hand and Upper Extremity Illness

Hand ◽  
2016 ◽  
Vol 12 (5) ◽  
pp. 484-489 ◽  
Author(s):  
Sezai Özkan ◽  
Femke M. A. P. Claessen ◽  
Kyle R. Eberlin ◽  
Sang-Gil P. Lee ◽  
David C. Ring ◽  
...  
Keyword(s):  
Grip Strength ◽  
Upper Extremity ◽  
Pain Catastrophizing ◽  
Intervention Group ◽  
Control Group ◽  
Performance Measurements ◽  
Significant Difference ◽  
Before And After ◽  
Maximum Grip Strength ◽  
Maximum Grip

Background: Grip strength is a performance-based measure of upper extremity function that might be influenced by priming (the influence of a response to a stimulus by exposure to another stimulus). This study addressed the influence of questionnaire content on performance measurements such as grip strength between patients who complete the standard Pain Catastrophizing Scale (PCS) compared with patients who complete a positively adjusted PCS. Methods: Between June 2015 and August 2015, we enrolled 122 patients who presented to 3 hand surgeons at 3 outpatient offices. They were randomized to 2 groups: the control group, which completed the PCS, and the intervention group, which completed a positively phrased version of the PCS. Before and after completion of the questionnaire, we measured each patient’s grip strength 3 times by alternating between hands. Two patients were excluded after participation. We calculated both the preintervention and postintervention mean and maximum grip strengths. Results: There was no significant difference between groups on mean or maximum grip strength before completion of the questionnaires. There was a greater improvement in mean grip strength of both hands in the intervention group compared with the PCS group. This improvement was statistically significant in the affected hand. The maximum grip strength showed a statistically significant greater improvement in both hands in the positive PCS group compared with the control group. Conclusions: Positive priming through a questionnaire leads to an increase in mean and maximum grip strength when compared with the standard questionnaire that uses negative terms rather than positive.

scholarly journals Characteristics of somatic build and physical activity and evaluation of hand grip strength in patients with type 1 diabetes

2016 ◽  
Vol 30 (4) ◽  
pp. 5-16
Author(s):  
Agata Kuźmicka ◽  
Stanisław Kuźmicki ◽  
Katarzyna Kaczmarczyk ◽  
Marek Kruszewski ◽  
Grażyna Brzuszkiewicz-Kuźmicka
Keyword(s):  
Physical Activity ◽  
Type 1 Diabetes ◽  
Muscle Strength ◽  
Grip Strength ◽  
Hand Grip Strength ◽  
Diabetic Patients ◽  
Healthy Individuals ◽  
Hand Grip ◽  
Predominant Component

Abstract Introduction: In order to avoid hypoglycaemia, individuals diagnosed with type 1 diabetes usually limit their physical activity, which might lead to changes in somatic build and in the level of muscle strength. The aim of the study was to define somatic build, hand grip strength and physical activity in patients diagnosed with type 1 diabetes. Materials and methods: The study included 24 patients with type 1 diabetes and 24 healthy individuals. Body build was assessed on the basis of 20 somatic features and indices. Somatic types were assessed using the Sheldon’s method modified by Heath-Carter. Hand grip strength was measured with hand grip dynamometer, while physical activity was evaluated by means of a questionnaire survey. Results: The results obtained from female subjects showed insignificant intergroup differences concerning the measured features. Endomorphy was a predominant component among female somatotypes. Compared to the healthy controls, males with type 1 diabetes exhibited lower values of arm circumference (tensed), thigh circumference, ankle width and mesomorphy as well as hand grip strength (p<0.05). The diabetic patients preferred cycling while healthy people opted for combat sports. Conclusions: Differences in somatic build, hand grip strength and physical activity between healthy individuals and patients diagnosed with type 1 diabetes were greater in the case of men than women. Compared to healthy individuals, diabetic men exhibited lower values of somatic features that are typical of mesomorphy and muscle strength. Both women and men diagnosed with type 1 diabetes preferred low-intensity and aerobic physical activity.

scholarly journals Changes in Function and Muscle Strength of Encephalitis Survivors After Inpatient Rehabilitation

2021 ◽  
Vol 45 (6) ◽  
pp. 422-430
Author(s):  
Tayeun Kim ◽  
In Yae Cheong
Keyword(s):  
Muscle Strength ◽  
Grip Strength ◽  
Autoimmune Encephalitis ◽  
Inpatient Rehabilitation ◽  
Berg Balance Scale ◽  
Manual Muscle Testing ◽  
Korean Version ◽  
Muscle Testing ◽  
Before And After ◽  
Motor Strength

Objective To investigate the clinical demographics and rehabilitative assessments of encephalitis survivors admitted to a rehabilitation center, and to confirm the effects of inpatient rehabilitation manifested by changes in muscle strength and function after hospitalization.Methods Data of encephalitis survivors who received rehabilitation at our institution from August 2009 to August 2019 were reviewed. Medical charts were retrospectively reviewed, and motor, functional, and cognitive assessments were collected. Manual muscle testing (MMT), Fugl-Meyer Assessment (FMA), Berg Balance Scale (BBS), Functional Ambulation Category (FAC), Korean version of Modified Barthel Index (K-MBI), grip strength, Box and Block Test (BBT), and Korean version of Mini-Mental State Examination (K-MMSE) were performed, and the results upon admission and discharge were compared and analyzed.Results Most of the patients with encephalitis admitted to our institution had viral or autoimmune etiologies. The assessment results of 18 encephalitis patients upon admission and discharge were compared. The total K-MBI score, FAC, grip strength, and BBT significantly improved, but not the MMT and FMA. Subgroup analysis was performed for viral and autoimmune encephalitis, which are the main causes of the disease, but there was no difference in items with significant changes before and after hospitalization.Conclusion Encephalitis survivors showed a significant improvement in functional assessment scale during their hospital stay through rehabilitation, without significant changes in motor strength. Hence, we can conclude that encephalitis survivors benefit from inpatient rehabilitation, targeting functional gains in activities of daily living training more than motor strength.

scholarly journals Evaluation of Effect of Handle Vibration Diesel-Fueled Single-Axle Tractor on Handgrip Strength of Operators

2020 ◽  
Author(s):  
Siraj Busse ◽  
Anthony Sinclair ◽  
Diresibachew Wondimu ◽  
Daniel Reda
Keyword(s):  
Grip Strength ◽  
Handgrip Strength ◽  
Major Effect ◽  
Vibration Exposure ◽  
Dominant Hand ◽  
Average Operator ◽  
Before And After ◽  
The Mean ◽  
Maximum Grip Strength ◽  
Maximum Grip

Abstract Background: The transmission of vibration from a single-axis tractor to the human body is determined by its dynamic response; this, in turn, depends on the physical characteristics of a person's hand, the contact area, the strength of the grip, the push force of the tractor, and the position. The purpose of this work was to measure and evaluate handgrip strength and fatigue resistance for operators of a 15 horsepower single-axle tractor before and after vibration exposure. Methods: Grip strength of dominant and non-dominant hands before and after 30 minutes of tilling operations was measured and recorded. The operators performed tilling tasks with the tractor in third gear, while the vibration levels were measured at the tractor handle along with the vertical, forward, and transverse directions. Results: The average operator grip strength was 33.6 ± 2.7 and 26.3 ± 3.3 kg and the average overall grip strength declined from 39.7 to 29.31 kg, although the average fatigue strength was 27.6 and 26.5 seconds for the dominant hand before and after vibration exposure. For the non-dominant hand, the mean grip strength measured was 28.7±2.9 and 23.1±1.9 kg and the maximum grip strength was 32.79 and 26.25, while fatigue was 29.76 and 22 seconds before and after tilling respectively.Conclusion: The average reduction in grip strength suggest considerable differences in grip strength for dominant and non-dominant hands of single axle tractor operators and shows that vibration transmitted from the single axle tractor handle has a major effect on the operators.

The Effect of Static Muscle Work on a Subsequent Fine Manipulative Task

1976 ◽  
Vol 20 (23) ◽  
pp. 531-533
Author(s):  
B.T. Davies ◽  
M.C. Pratt
Keyword(s):  
Grip Strength ◽  
Holding Time ◽  
Time Intervals ◽  
Muscle Work ◽  
Static Contraction ◽  
Maximum Grip Strength ◽  
Male Subjects ◽  
Maximum Grip

An experiment is described where the effect of static contraction upon a subsequent fine manipulative task was investigated. Maximum grip strength was established then a force of 15% of the maximum grip was used by six male subjects as follows. They were required to hold this static contraction for (i) 3 minutes and (ii) for 90% of the time of their maximum holding time. The effect of these two exertions on a subsequent fine manipulative task was checked at 3 time intervals after completion of the static muscle work (1 - immediately; 2 - after 5 minutes; 3 - after 30 minutes). Results showed an interference with fine manipulative task for a period of less than 5 minutes after completing the static muscle work.

Força dos Músculos Rotadores do Ombro em Indivíduos Saudáveis/ Rotator Cuff Muscle Strength in Healthy Individuals

1970 ◽  
Vol 1 (1) ◽  
pp. 78-82
Author(s):  
Paulo José Oliveira Cortez ◽  
José Elias Tomazini ◽  
Mauro Gonçalves
Keyword(s):  
Rotator Cuff ◽  
Muscle Strength ◽  
Internal Rotation ◽  
Upper Limb ◽  
Statistical Difference ◽  
External Rotation ◽  
Healthy Individuals ◽  
Average Strength ◽  
Strength Tests ◽  
The Right

Introdução: A diminuição da capacidade de exercer esforços por parte dos músculos rotadores pode criar uma variedade de problemas. O conhecimento preciso do nível de força muscular de um indivíduo é importante, tanto para a avaliação da capacidade funcional ocupacional, como para uma apropriada prescrição de exercícios atléticos e de reabilitação. Percebe-se escassez de informação sobre as articulações do ombro, bem como os fatores envolvidos na força muscular dessa região. O objetivo deste estudo foi comparar a força gerada pelos músculos do manguito rotador entre o membro superior direito e o membro superior esquerdo em indivíduos saudáveis. Métodos: Participaram do estudo 22 sujeitos do sexo masculino, com idade de 18 e 19 anos, militares, saudáveis e sem história clínica de patologia ortopédica ou qualquer tipo de lesão no sistema musculoesquelético. Foram aplicados dois testes de força: Rotação Interna e Rotação Externa. Resultado : A força média de rotação interna no membro superior direito (MSD) foi maior que a força média de rotação interna no membro superior esquerdo (MSE) (p=0,723) e a força de rotação externa no MSD foi menor que a força média de rotação externa no MSE (p=0,788). Não houve diferença estatística na comparação dos valores de força de todos os testes de força isométrica. Conclusão: Para amostra estudada e metodologia utilizada na avaliação da força muscular, não houve diferença estatística na comparação da força gerada pelos músculos do manguito rotador do membro superior direito e do membro superior esquerdo.Rotator Cuff Muscle Strength in Healthy Individuals Introduction: Decreased ability to exert efforts by the rotator muscles can create a variety of problems. The precise knowledge of the level of muscular strength of an individual is important for both the functional capacity evaluation for occupational as an appropriate exercise prescription and rehabilitation of athletic. It is perceived scarcity of information on the shoulder joints as well as factors involved in muscle strength in this region. Objective: Develop a device for measuring the strength generated by the muscles of the upper limbs and the verification of efficiency and adaptability of this device through a comparative study of muscle strength in healthy subjects. Methods: The study included 22 male subjects, aged 18 and 19 years, military personnel, body mass between 57.7 and 93 kg (71.8 ± 9.45 kg) and height between 1.67 and 1.90 m (1.75 ± 0.06 m), healthy and without a history of orthopaedic disease or any kind of damage to the musculoskeletal system. Three strength tests were applied: Internal Rotation and External Rotation. For each type of effort three maximum voluntary contractions were required for 10 seconds, with an interval of 30 seconds between each contraction.  Results: Internal rotation in the right upper limb (RUL) was higher than the average strength of internal rotation in the left upper limb (LUL) (p = 0, 723) and the external rotation strength in RUL was lower than the average strength of external rotation in the LUL (p=0,788).  No statistical difference in comparing the strength values of all isometric strength tests. Conclusion: For sample and methodology used to assess muscle strength, there was no statistical difference in comparing the force generated by the muscles of the rotator cuff of the right and left upper limb.

scholarly journals Progression of cerebral infarction before and after thrombectomy is modified by prehospital pathways

2021 ◽  
pp. neurintsurg-2020-017155
Author(s):  
Alexander M Kollikowski ◽  
Franziska Cattus ◽  
Julia Haag ◽  
Jörn Feick ◽  
Alexander G März ◽  
...  
Keyword(s):  
Patient Characteristics ◽  
Large Vessel ◽  
Stroke Severity ◽  
Large Vessel Occlusion ◽  
Time Intervals ◽  
Vessel Occlusion ◽  
Before And After ◽  
Transferred Patients ◽  
Stroke Center

BackgroundEvidence of the consequences of different prehospital pathways before mechanical thrombectomy (MT) in large vessel occlusion stroke is inconclusive. The aim of this study was to investigate the infarct extent and progression before and after MT in directly admitted (mothership) versus transferred (drip and ship) patients using the Alberta Stroke Program Early CT Score (ASPECTS).MethodsASPECTS of 535 consecutive large vessel occlusion stroke patients eligible for MT between 2015 to 2019 were retrospectively analyzed for differences in the extent of baseline, post-referral, and post-recanalization infarction between the mothership and drip and ship pathways. Time intervals and transport distances of both pathways were analyzed. Multiple linear regression was used to examine the association between infarct progression (baseline to post-recanalization ASPECTS decline), patient characteristics, and logistic key figures.ResultsASPECTS declined during transfer (9 (8–10) vs 7 (6-9), p<0.0001), resulting in lower ASPECTS at stroke center presentation (mothership 9 (7–10) vs drip and ship 7 (6–9), p<0.0001) and on follow-up imaging (mothership 7 (4–8) vs drip and ship 6 (3–7), p=0.001) compared with mothership patients. Infarct progression was significantly higher in transferred patients (points lost, mothership 2 (0–3) vs drip and ship 3 (2–6), p<0.0001). After multivariable adjustment, only interfacility transfer, preinterventional clinical stroke severity, the degree of angiographic recanalization, and the duration of the thrombectomy procedure remained predictors of infarct progression (R2=0.209, p<0.0001).ConclusionsInfarct progression and postinterventional infarct extent, as assessed by ASPECTS, varied between the drip and ship and mothership pathway, leading to more pronounced infarction in transferred patients. ASPECTS may serve as a radiological measure to monitor the benefit or harm of different prehospital pathways for MT.

Sign in / Sign up

Export Citation Format

Share Document