Wyniki wyszukiwania - Biblioteka Nauki

1

Granulocyte colony-stimulating factor therapy for facioscapulohumeral dystrophy: a case report

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Sienkiewicz D. , Kułak W. , Okurowska-Zawada B. , Paszko-Patej G. , Wojtkowski J. , Dmitruk E. , Okulczyk K. , Sochoń K. , Kalinowska A. , Żak J. , Pogorzelski R.

Progress in Health Sciences

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2016

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tom 6(2)

175-177

EN

We examined the safety and effectiveness of a low dose of analog granulocyte-colony stimulating factor in a 15-year-old boy with facioscapulohumeral dystrophy. The onset of disease was noted at 12 years of age. The physical examination noted general muscle atrophy more pronounced at left side of the body. He was able to walk 300 meters within 6 minute walk test. Granulocyte colony-stimulating factor 5 μg/kg was given subcutaneously daily for 5 days/month for 1, 2, 3, 6 and 12 months. Clinical examination, laboratory tests including blood, biochemical tests, and CD34+ cells were performed. A significant increase of muscle strength in the lower and upper limbs between baseline, and after 3 months of treatment, after 6, and after 12 months was found. He was able to walk 480 meters within 6 minutes after 12 months. Electromyography demonstrated increase of amplitude in the examined in upper and lower limbs after six months compared to baseline. Leukocyte levels remained below 25000/μL. CD34+ increased significantly at day 5 of granulocyte colony-stimulating factor admini-stration. It was safe and well tolerated by the patient. A significant increase in muscle strength in this patient with facioscapulohumeral dystrophy after 3 months of treatment, after 6, and after 12 months since the first treatment course was completed may indicate beneficial effects of granulocyte colony-stimulating factor in this disorder.

2

Selected Determinants of Acceleration in the 100m Sprint

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Maćkała K. , Fostiak M. , Kowalski K.

Journal of Human Kinetics

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2015

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tom 45

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nr 1

135-148

EN

The goal of this study was to examine the relationship between kinematics, motor abilities, anthropometric characteristics, and the initial (10 m) and secondary (30 m) acceleration phases of the 100 m sprint among athletes of different sprinting performances. Eleven competitive male sprinters (10.96 s ± 0.36 for 100 with 10.50 s fastest time) and 11 active students (12.20 s ± 0.39 for 100 m with 11.80 s fastest time) volunteered to participate in this study. Sprinting performance (10 m, 30 m, and 100 m from the block start), strength (back squat, back extension), and jumping ability (standing long jump, standing five-jumps, and standing ten-jumps) were tested. An independent t-test for establishing differences between two groups of athletes was used. The Spearman ranking correlation coefficient was computed to verify the association between variables. Additionally, the Ward method of hierarchical cluster analysis was applied. The recorded times of the 10 and 30 m indicated that the strongest correlations were found between a 1- repetition maximum back squat, a standing long jump, standing five jumps, standing ten jumps (r = 0.66, r = 0.72, r = 0.66, and r = 0.72), and speed in the 10 m sprint in competitive athletes. A strong correlation was also found between a 1-repetition maximum back squat and a standing long jump, standing five jumps, and standing ten jumps (r = 0.88, r = 0.87 and r = 0.85), but again only for sprinters. The most important factor for differences in maximum speed development during both the initial and secondary acceleration phase among the two sub-groups was the stride frequency (p<0.01).

3

Respiratory performance and occlusal strength of soccer players: an approach after training and detraining during the lockdown due to coronavirus disease 2019 (COVID-19)

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Prandi M. V. R. , Palinkas M. , Wanshi Arnoni V. , Gomes G. G. C. , Silva A. W. , Fabrin S. C. V. , Regalo I. H. , Siéssere S. , Regalo S. C. H.

Polish Journal of Sports Medicine

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2021

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tom 37(4)

201-206

EN

Background. The aim of the study was evaluate the strength of the respiratory muscles, bite force, and occlusal force distribution of professional soccer players after training and detraining resulting from the lockdown that occurred during the coronavirus disease 2019 pandemic. Material and methods. Twelve male soccer players (age, 19-34 years) were subjected to respiratory muscle strength analysis by examining the maximal inspiratory and expiratory pressures, maximum molar bite force (right and left sides), and occlusal force distribution of the first permanent molars. Comparisons of variables after training and detraining were analyzed using the paired-sample t-test (p < 0.05), and the correlation between respiratory variables was measured using the Pearson test (p < 0.05). Results. There were no significant differences in the bite force and occlusal force distributions after training and detraining. The correlation results showed moderate positivity between the maximal inspiratory and expiratory pressures during the training period. Conclusions. The results suggest that when soccer players strengthen the inspiratory muscles, they also strengthen the expiratory muscles and that detraining does not impact the athlete's organic function, especially the respiratory muscle function and the forces of the occlusal contact of the first permanent molars.

4

Neuromuscular Compression Garments: Effects on Neuromuscular Strength and Recovery

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Bottaro M. , Martorelli S. , Vilaça J.

Journal of Human Kinetics

|

2011

|

tom 29A

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nr Special Issue

27-31

EN

Graduated compression stockings have been used as a mechanical method of deep vein thrombosis prophylaxis for several years. Several studies have demonstrated an increase in mean deep venous velocity, reduced venous pooling, improved venous return, and increase blood lactate clearance in subjects who wore graduated compression stockings during exercise. A possible improvement in venous return during and after exercise may facilitate the clearance of metabolites produced during exercise. Also, studies have suggested that compressive clothing can promote tissue regeneration and consequently positively benefit the muscle function following strenuous exercise. However, the results from the previous studies are controversial. Also, the majority of the studies investigated the effects of compression stockings and there is a lack of studies using different compression garments such as compression shorts, shirts and sleeves. Thus, the purpose of this text is to briefly review the possible effects of compression garments on exercise performance and muscle recovery.

5

Relations between Bioelectrical Muscles Activity and Isokinetic Strength Parameters in 17-19-Year-Old Judoists

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Dornowski M.

Baltic Journal of Health and Physical Activity

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2010

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tom 2

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nr 1

43-48

EN

Background: Muscle strength as an element of preparation and sport competition is one of the most important aspects in technical and tactical efficiency. The aim of this study was to define the level of relation between bioelectrical muscle activity and isokinetic strength parameters in 17-19-year-old judoists.Material/Methods: 30 judo athletes (17-19-year-old) took part in the research. The research was conducted in Gdańsk Academy of Physical Education and Sport Laboratory during 2006-2008. In the research authors used: to evaluate the isokinetic strength level, "Concept 2 Dyno" device was used in the research, along with surface summary electrical bio-potentials reading on EMG AMT-8 CDN BORTEC BIOMEDICAL with ACQ software.Results: In the upper right limb there are more statistical significant correlations between isokinetic strength parameters and electrical muscle activities.In the lower limbs measurement of the left leg shows more significant correlations.Conclusions: Comparing the upper and lower limbs, it was noticed that the isokinetic strength parameters of the upper limbs are more correlated with the measured muscle electrical activities.Regarding the left and the right side comparison, the right side (the upper and the lower limb) isokinetic strength parameters are more correlated with the measured muscle activities.

6

Using the Jebsen-Taylor test in patients after radial bone fracture

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Białkowska J. , Juśkiewicz-Swaczyna B. , Andrzejczak M.

Advances in Rehabilitation

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2020

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tom 35

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nr 1

24-31

EN

Introduction The aim of the study was twofold. First it was to assess the usefulness of the Jebsen-Taylor test of hand function in an analysis of rehabilitation outcomes in patients after radial bone fracture and second, it was to examine whether the results of JTT correlate with other methods applied in objective assessment of patients' functional state after radial bone fracture. Material and methods The study population consisted of 64 patients . The study included an assessment of hand functional mobility with the use of the JTT, measurement of the hand muscle strength with a hydraulic dynamometer, measurement of the pressure strength of the thumb with a grip dynamometer and pain measurement with the VAS scale. All tests were performed before and after 21 days of rehabilitation. Results The time needed to perform all seven tasks included in the JTT was consistently reduced in both non-dominating and dominating hands and the results showed high reliability. Some correlations were observed between JTT and other methods of assessing outcomes of rehabilitation. Conclusions The JTT is a simple, reliable, objective and standardised tool for clinical assessment of the functional state of patients with various hand dysfunctions and it should be widely applied in clinical practice. We found it to be reliable, easy to administer, and comprehensive in an assessment of hand functions. It correlated with several other measurement that assess outcomes of rehabilitation and therefore it is recommended that JTT should be combined with other methods to assess rehabilitation results and provide a comprehensive evaluation of the patient.

7

Muscle Strength and Technical Skills in 17-19-Year-Old Judoists

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Dornowski M. , Jagiełło W. , Smaruj M.

Baltic Journal of Health and Physical Activity

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2011

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tom 3

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nr 4

262-268

EN

Background: The aim of this study was to define the relationships between different kinds of muscle strength manifestations and technical skills (selected throwing techniques) in 17-19-year-old judoists.Material/Methods: Results of measurements taken in 2006-2008 at the Physical Effort Lab in the Gdansk University of Physical Education and Sport were taken under consideration. 30 male judo athletes (17-19-year-old) participated in the study. They all were students of Comprehensive Sports School - with the judo profile and athletes representing clubs from Pomerania and Warmia-Masuria Provinces.An ergometric device "Concept 2 Dyno" was used in the measurements of isotonic strength and strength endurance. In the measurement of static strength an electronic dynamometer ERGO METER was used. To evaluate the level of technical skills (throws), the method of expert evaluation was used (coach evaluation).Results: Using regression analysis results, which revealed the most significant relationships between variables presented in percentage value, relation's topographies of particular types of muscle strength were created. They form an applicable, transparent and ready-to-use in training process form for coaches. They point to these elements of strength preparation on which the training process should be primarily focused and during measurement intervals as well.Conclusions: Interpretation and synthesis of the results showed relationships of 10 technical skills (throws) with muscle strength in 17-19-year-old judoists in three out of four types: isotonic strength, strength endurance and static strength. These skills were included in hand throws - 2, foot - 1, hip - 3 and sacrifice - 4. Jump force remained with no significant relationships.The results of this study can be used in the training process of 17-19-year-old judoists. Following technical skills (throws) were characterized: tai-otoshi, seoi-nage, kosoto-gari, uki-goshi, tsuri-goshi, ushiro-goshi, tani-otoshi, osoto-makikomi, yokootoshi, yoko-guruma.

8

Effects of Strength Training on Physical Capacities of the Disabled with Cervical Spine Injuries

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Tabęcki R. , Kosmol A. , Mastalerz A.

Human Movement

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2009

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tom 10

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nr 2

126-129

EN

Purpose. The aim of the study was to assess the effects of strength training on the physical capacities of disabled persons with cervical spine injuries. Basic procedures. The study sample consisted of four disabled subjects with C4-C6 cervical spine injury, who were active Paralympic athletes (one swimmer and three wheelchair rugby players) from the Foundation of Active Rehabilitation. The study was carried out over a period of 15 months. The Biodex System 3 Pro isokinetic dynamometer and an arm cycloergometer were used for measurements. The measurements of muscle torques at the shoulder joint were carried out at 8-week intervals using the Biodex dynamometer. Main findings. The test results revealed a correlation between the body's physical endurance and strength capacities of subjects with cervical spine injuries. The "Upperton" strength training equipment modified for tetraplegics allowed maximal loading of the disabled athletes' shoulder girdle. Conclusions. Strength training improves the maximal force of arms in tetraplegics and positively affects their physical endurance. Tetraplegics can take advantage of strength training only by using hand-fixed weights, due to the limited function of arm flexors, including the greatly reduced hand gripping function. Strength training is an indispensable element of rehabilitation of tetraplegics.

9

Effects of multi-ingredient supplementation on resistance training in young males

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Willems M. , Sallis C. , Haskell J.

Journal of Human Kinetics

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2012

|

tom 33

91-101

EN

Muscle strength and fatigue resistance increases with resistance training. Resistance training adaptations can be enhanced with single-ingredient or dual-ingredient supplementation but less is known about resistance training adaptations by multi-ingredient supplementation. We examined the effects of a commercial multi-ingredient supplement on resistance training adaptations for training-specific and non-training-specific tasks in young males. Male participants (n = 16, age 21±2 years, body mass 74.5±5.9 kg, body height 177±5 cm) had at least 1 year experience with resistance training exercises. Training (7 muscle groups, 4 sessions/week, weekly adjustments) consisted of two 6 weeks blocks with 4 weeks between blocks. During training, participants consumed placebo (i.e. maltodextrin, n = 7) or the sports nutritional supplement Cyclone (Maximuscle Ltd, UK, n = 9) (main ingredients creatine monohydrate, whey protein, glutamine and HMB) twice daily with one intake <15 min following a training session. Unpaired Student's ttest was used for placebo and Cyclone group comparison of percentage changes with p < 0.05. Effect sizes (Cohen's d) were calculated for the Cyclone group. Cyclone did not enhance maximal voluntary isometric force (MVIF) (p = 0.56), time to fatigue at 70% MVIF (p = 0.41) and peak concentric strength (60°·s-1) (p = 0.66) of m.quadriceps femoris (i.e. the non-specific training tasks). For the specific-training tasks, Cyclone did not enhance one-repetition maximum (1-RM) of lateral pull (p = 0.48) but there was a trend and large effect size for 1-RM of bench press (p = 0.07, d = 0.98) and 45° leg press (p = 0.07, d = 1.41). Cyclone resulted in an increase in number of repetitions for 80% pre-training 1-RM for lateral pull (p = 0.02, d = 1.30), bench press (p = 0.03, d = 1.20) with a trend for 45° leg press (p = 0.08, d = 0.96). Cyclone during resistance training enhanced the performance of 1-RM and number of repetitions at 80% of pretraining 1RM of some training-specific tasks, all with large effect sizes. Our observations suggest that Cyclone during resistance training substantially improves the ability to perform training-related tasks.

10

Factors determining the functional abilities of patients after stroke

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Kubielska J. , Kostka J. , Miller E.

Advances in Rehabilitation

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2020

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tom 34

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nr 3

8-14

EN

Introduction The purpose of the study was to assess the functional abilities of patients after stroke and to identify factors that affect it. Material and methods The study was performed on 40 patients after stroke. To assess functional ability the Rivermead Motor Assessment (RMA), Barthel Index (BI), Tinetti test, and Up&Go test were used. The maximum muscle power (Pmax), optimal shortening velocity (Vopt), muscle strength, one-leg standing test, Geriatric Depression Scale (GDS), pain assessment (Numeric Pain Scale), nutrition assessment (Mini Nutritional Assessment Scale - MNA) were also performed. Results Functional performance was influenced by: knee flexors on the affected side (correlations respectively: RMA rho=0,37; p=0,04; Tinetti test rho=0,44; p<0,01; Up&Go test rho=-0,56; p<0,001), balance time on a non-affected leg (RMA rho=0,38; p=0,03; BI rho=0,41; p=0,01; test Tinetti rho=0,64; p<0.001; Up&Go test rho=-0.47; p=0.003), Pmax (RMA rho=0,35; p=0,04; Tinetti test rho=0,49; p<0,01; Up&Go test rho=-0,63; p<0.001), reporting problems with sitting and standing up (RMA p=0,003; Tinetti test p=0,02; Up&Go test p=0.049), using orthopedic assistance (RMA global functions p=0,01; RMA lower limb and torso p=0,04; BI p=0,003; Tinetti test p<0,001, Up&Go test p<0,001). The MNA result was correlated with RMA (rho=0,36; p ,0.04), no correlation was obtained for any of the functional tests with the extensor muscle strength on the non-affected side, GDS and pain level. Conclusions The functional ability of stroke patients is affected by knee flexors on the affected side, the ability to maintain balance, and maximum muscle power. People, who reported problems with sitting and standing up and using orthopedic assistance, are characterized by worse ability.

11

Assessment of the strength and endurance of the trunk muscle in patients with low back pain

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Głodzik J. , Chwała W. , Marchewka A. , Ruchlewicz T. , Skura A.

Medical Rehabilitation

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2008

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tom 12(3)

15-23

EN

Introduction: In this study, strength and endurance of the trunk muscles were assessed in patients with spondyloarthrosis of the lower spine. Material and methods: 52 women and 49 men with low back pain syndrome (LBPS) were enrolled into the study. The muscle strength of the flexors and extensors of the trunk was determined by calculation of the maximum (MT) and relative torque (RT) during an isometric contraction. Evaluation of endurance of the extensors used calculation of the regression coefficient of the strength reduction during the testing of maximum strength capability. The obtained results were compared to results obtained in healthy persons. Moreover, the relation of those parameters to age, body-mass index – BMI (describing somatic habitus) and the Oswestry Disability Index – ODI (describing pain intensity during activities of daily living) was assessed. Separate analyses were conducted for the groups of males and females.Results: Based on the conducted study and the performed analyses, it can be stated that in patients with chronic low back pain syndrome there is a marked reduction in trunk muscle strength as compared to healthy persons. For females, the reduction ranged from 45% (flexors) to 48% (extensors) for absolute maximum torque values, while for relative values (RT) – from 51% (flexors) to 56% (extensors). In men, the strength reduction of abdominal and back muscles was smaller and was approximately 40% (for MT and RT). Because of such differences in the strength of the back muscles and methodological reasons, endurance variables were not compared. Reduction in trunk muscle strength is primarily due to the pain syndrome and does not depend on patients’ age or habitus. Lower muscle strength can affect the intensity of spinal pain during every-day activities.Conclusions: Precise determination of strength and endurance of the trunk muscles and the appropriate selection of methods of their reinforcement should constitute one of the principal aims of rehabilitation treatment in patients with low back pain.

12

Evaluation of the dose-response for electrostimulation with Aussie current in the core strength

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Andressa Bonito Lopes A. B. , Dhebora Espindola Amboni D. E. , Marilis Macedo Schmide M. M. , Miriélly Junges Maciel M. J. , Alberito Rodrigo de Carvalho A. R. , Gladson Ricardo Flor Bertolini G. R. F.

European Journal of Clinical and Experimental Medicine

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2020

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nr 2

81-87

EN

Introduction. Muscle strengthening to improve joint stability is widely used in the rehabilitation process, and the use of neuromuscular electrical stimulation is a useful tool, but the use of Aussie current still has little documentation about its effectiveness. Aim. To verify if there is a dose-response effect to Aussie current, both in the strength and in the static and dynamic stability of the deep pelvic lumbar muscles. Material and methods. 39 volunteers divided into four groups, one control and three electrostimulation with intensity variation, one with intensity at the contraction threshold (GT), another with intensity maintained at 20% more (G20), and another with intensity maintained at 30% more (G30) than the intensity at the contraction threshold. The intervention lasted four weeks, with three weekly sessions lasting 15 minutes. Initially and after the intervention period, the strength and stability of the deep muscles of the pelvic lumbar region were measured in a static and dynamic manner by a biofeedback pressure unit. Results. There was a significant increase of pressure under the lordoses in the pre- and post-evaluation moments, there were no differences in the evaluation of indirect force (dynamic stability), but there was an increase in the time for GT. The effect sizes presented advantages for the electrostimulated groups in static stability. Conclusion. The doses used did not promote significant statistical differences, but the effects were positive for the electrostimulated groups, especially with respect to static stability.

13

Quantification of eccentric hamstrings strength in elite academy footballers: Considerations for assessment

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Rhodes D. , Greig M. , Jeffrey J. , Alexander J.

Central European Journal of Sport Sciences and Medicine

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2022

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tom 39

|

nr 03

14

Muscle strength in physically active and inactive prisoners

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Naczk M. , Jaworski L. , Brzenczek-Owczarzak W. , Arlet J. , Adach Z.

Studies in Physical Culture and Tourism

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2011

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tom 18

|

nr 3

15

Lower extremity muscle strength, postural stability and functional movement screen in female basketball players after ACL reconstruction : Preliminary report

75%

Wrzesień Z. , Truszczynska-Baszak A. , Rzepka R.

Acta of Bioengineering and Biomechanics

|

2019

|

tom Vol. 21, nr 2

71--81

EN

The anterior cruciate ligament (ACL) tear is a common injury in basketball. Its consequence is a long absence from training, resulting from surgical treatment and long physiotherapy. The aim of the study was to assess muscle strength, postural stability and functional movements in female basketball players, who returned to professional sport careers after anterior cruciate ligament reconstruction. Methods: The study population consisted of 10 female basketball players after surgical reconstruction of anterior cruciate ligament. The control group consisted of 10 players without ACL injury. We used the Biodex System 4 Pro dynamometer to assess the muscle strength of the knee. We used it to conduct the test of flexors and extensors of the knee in isokinetic conditions. We also used Keiser Power Squat A300 in the single leg squat to measure power and the Biodex Balance SD dynamographic platform to assess balance in single leg stance. Results: We found deficits in both movement patterns and in muscle strength in the study population, compared to control group. Conclusions: The basketball players after ACL reconstruction had significant differences between the operated and non-operated limb. The differences may predispose them towards repeated ACL injuries.

16

Wyznaczanie sił mięśniowych i reakcji w stawach kończyny dolnej podczas naskoku i odbicia

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Drapała K. , Dziewiecki K. , Mazur Z. , Blajer W.

Modelowanie Inżynierskie

|

2012

|

tom T. 13, nr 44

49-56

PL

W artykule opisano metodę wyznaczania -poprzez rozwiązanie zadania symulacji dynamicznej odwrotnej -sił mięśniowych i reakcji w stawach kończyny dolnej podczas naskoku i odbicia z jednej nogi. Kończynę wydzielono z ciała człowieka i zamodelowano jako płaski łańcuch kinematyczny zaczepiony w stawie biodrowym, sterowany za pomocą dziewięciu sił mięśniowych. Danymi wejściowymi dla symulacji są charakterystyki kinematyczne ruchu (pomierzone metodami fotogrametrycznymi) oraz, w fazie kontaktu z podłożem, reakcje od podłoża na stopę (zmierzone na platformie dynamometrycznej). Przedstawiono zarówno najistotniejsze elementy zbudowanego modelu obliczeniowego jak i wybrane wyniki symulacji dynamicznej odwrotnej analizowanego skoku.

EN

The paper developes an effective method for the determination of muscle forces and joint reaction forces in the lower limb, developed as the inverse dynamics simulation during one-leg jump composed as a sequence of a short flight phase (hurdle from one leg to another), one-leg contact phase with the ground (landing and take-off), and another flight phase (ballistic flight after the take-off). The main steps of the developed formulation are shortly presented, and selected simulation results of the sample movement are reported.

17

Identyfikacja sił mięśniowych kręgosłupa człowieka - badania doświadczalne, modelowanie

75%

Mańka I.

Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska

|

2004

|

tom z. 24

171-178

PL

W artykule zawarto wyniki uzyskane podczas badań przeprowadzonych na opracowanym stanowisku, służącym do wyznaczania wartości sił mięśniowych człowieka. Przedstawiono również metodę identyfikacji sił pochodzących od pojedynczych mięśni otrzymanych w wyniku obliczeń numerycznych.

EN

The paper presents results of experimental determination of maximal forces, generated by spinał muscular groups during different exercises, combined with computational identification of forces generated by single muscles, performed with the use of optimizing methods.

18

Body balance a few years after total hip replacement

75%

Wareńczak A. , Lisiński P.

Acta of Bioengineering and Biomechanics

|

2020

|

tom Vol. 22, nr 1

87--96

EN

These aim of the study was to conduct a long-term evaluation of whether total hip replacement permanently affects the dynamic body balance. Methods: Twenty-five patients after the unilateral total hip replacement (mean age: 69.9 ± 6.2) and 25 subjects without the total hip replacement (mean age: 68.4 ± 4.8) who matched the age and overall health participated in this study. The force platform and functional tests such as Timed Up and Go, 3m walk test, Functional Reach Test, 30s Chair Stand Test, Step Test and Berg Balance Scale were used to assess dynamic balance. The results obtained in individual trials were compared using the Student’s t-test for independent variables, the Welch test or the non-parametric Mann–Whitney U-test. Results: Subjects from the THR group exhibited significantly increased time and distance in the tests performed on the force platform, compared to the control group. We also observed worse balance and functional test scores in the THR group: Timed Up and Go test ( p < 0.001), 3 m walk test ( p < 0.001), Functional Reach Test ( p < 0.001), 30 s Chair Stand Test ( p = 0.001) and Step Test (operated leg: p < 0.001, non-operated leg: p < 0.001). The results obtained in the Berg Balance Scale tests were not significantly different between the groups ( p = 0.218). Conclusions: We observed significant differences in postural stability and dynamic balance between patients after THR and subjects in the same age without endoprosthesis. Our research shows that total hip replacement permanently impairs patients’ dynamic balance and their functionality in certain lower-extremity activities.

19

The effect of linear and daily undulating periodized resistance training on the neuromuscular function and the maximal quadriceps strength

75%

Abdi N. , Hamedinia M. R. , Izanloo Z. , Hedayatpour N.

Baltic Journal of Health and Physical Activity. The Journal of Gdansk University of Physical Education and Sport

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2019

|

tom 11

|

nr 1

20

Muscle torque of healthy individuals and individuals with spastic hemiparesis after passive static streching

75%

Freitas S. T. T. , Abreu E. M. C. , Reis M. C. , Cunha B. S. , Prianti T. S. M. , Lima F. P. , Lima M. O.

Acta of Bioengineering and Biomechanics

|

2016

|

tom Vol. 18, nr 1

35--39

EN

Spasticity is one of the main causes of contracture, muscle weakness and subsequent functional incapacity. The passive static stretching can be included as having the purpose of increasing musculoskeletal flexibility, however, it also can influence the muscle torque. The objective is to verify the immediate effect of passive static stretching in the muscle strength of healthy and those who present spastic hemiparesis. There were assessed 20 subjects, 10 spastic hemiparetic (EG) and 10 healthy individuals (CG), including both sexes, aged between 22 and 78 years. The torque of extensor muscles of the knee was analyzed using isokinetic dynamometer. Results have shown that EG has less muscle torque compared to CG ( p < 0.01). In addition, EG presented a decrease in significance of muscle torque after stretching ( p < 0.05), however, it has not shown significant alteration in muscle torque of CG after performing the program that was prescribed. Immediately after the passive stretch, a significant torque decrease can be seen in hypertonic muscle; it is believed that this reduction may be associated with the physiological overlap between actin and myosin filaments and so preventing the muscle to develop a maximum contraction.