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Tytuł:
Absolute and relative reliability of several measures of static postural stability calculated using a GYKO inertial sensor system
Autorzy:
Jaworski, Janusz
Ambroży, Tadeusz
Lech, Grzegorz
Spieszny, Michał
Bujas, Przemysław
Żak, Michał
Chwała, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/27324151.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
balance
postural stability
accelerometer
test-retest reliability
intraclass correlation coefficient
balans
stabilność postawy
akcelerometr
niezawodność testu-retestu
współczynnik korelacji wewnątrzklasowej
Opis:
The aim of this study was to analyse absolute and relative reliability of a number of postural static stability measures obtained from a GYKO inertial sensor system in young adults. Methods: The study examined 29 healthy non-athlete young adults. A test was performed for 30 s while standing on one foot, without moving, with eyes open and arms relaxed along the sides of the body. The examinations were performed twice, with a one-week interval. Relative reliability was measured using the intraclass correlation coefficient (ICC) and the 95% confidence interval (95% CI), whereas the absolute reliability was evaluated based on the standard error of measurement (SEM) and the minimal detectable change (MDC). Results: The results of this study showed moderate to good relative reliability scores for all the postural stability measures, with ICC values ranging from 0.62 to 0.70. For most of the analysed variables, SEM% ranged from ca. 10 to 14%. Relatively high SEM% values were obtained only for two variables (Area, Convex Hull Area). Conclusions: The low costs of GYKO inertial sensor systems, the fast and easy installation, the mobility and high reliability of the measurement of postural stability show that it can be effective alternative to stabilographic platforms.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 2; 93--99
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acute effects of core stability exercises on balance control
Autorzy:
Szafraniec, R.
Barańska, J.
Kuczyński, M.
Powiązania:
https://bibliotekanauki.pl/articles/307089.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
stabilność postawy
posturografia
mięśnie tułowia
postural stability
motor learning
posturography
balance training
trunk muscles
sway entropy
Opis:
The aim of this study was to investigate whether a single bout of core stability exercises improves body balance immediately after the bout of exercise and during a retention test. Methods: The study involved 16 women (age 22–25 years, body weight 60.5 ± 5.2 kg, height 166 ± 5.4 cm). Postural stability was assessed in the mediolateral (ML) and anteroposterior (AP) planes separately on a force plate (Kistler 9286 AA) during quiet standing on a soft support surface with the eyes closed. Subjects were measured 4 times: just before (T0), 1 minutes after (T1 m), 30 minutes after (T30 m), and 24 hours after the workout (T24 h). Postural balance was evaluated by five parameters based on the center of pressure (COP) signal: variability (VAR), mean velocity (VEL), sample entropy (ENT), frequency (FRE), and fractal dimension (FRA). Results: We observed a decrease in VAR and VEL in the ML plane at T30 m and T24 h, compared to T0. The COP entropy significantly increased in the ML plane at T24 h, compared to T0. Conclusions: A single bout of core stability exercises improved the control of the mediolateral body balance. This effect was evident within 30 minutes after exercise, and remained for at least 24 hours. In addition, 24 hours after exercise we observed an increased automaticity in the strategy to maintain a stable upright stance.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 3; 145-151
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the relationship between selected stability assessment indicators on the example of leaning out the human body from the upright position
Autorzy:
Matuszewska, Agata
Buśkiewicz, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2146560.pdf
Data publikacji:
2020
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
postural stability
extrapolated centre of mass
foot support polygon
motion analysis system
stabilność posturalna
ekstrapolowany środek masy
wielokąt podparcia
system analizy ruchu
Opis:
The objective of this paper is to study the margin of stability when trying to lean out the body forward and backward. The centre of mass of the body, the velocity of the centre of mass and extrapolated centre of mass were calculated for four participants. The analyzed movement was recorded by using BTS Motion Capture system. Recordings, in which participants were unable to return to the upright position, were also observed. In these cases, it was verified the usefulness of extrapolated centre of mass for predicting the foot support area that enables maintaining the body balance. The relationship between the applied stability indicators and anthropometric parameters was determined. The preliminary results obtained confirm the validity of the use of selected parameters in tests and in assessment of the stability of the human body, and indicate the directions of further tests for a larger group of participants and other movement activities.
Źródło:
Vibrations in Physical Systems; 2020, 31, 2; art. no. 2020219
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of dynamic balance during step initiation in Parkinson’s disease patients and elderly – a validity study
Autorzy:
Juras, Grzegorz
Kamieniarz, Anna
Michalska, Justyna
Słomka, Kajetan
Powiązania:
https://bibliotekanauki.pl/articles/307381.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
choroba Parkinsona
wiek starszy
stabilność postawy
Parkinson’s disease
elderly
postural stability
validity
step initiation
Opis:
The aim of this study was to evaluate the reliability of the novel posturographic procedure and to investigate the relationships between parameters of this procedure and clinical tests. We hypothesised the proposed step initiation procedure to be reliable method of balance and motor disability assessment, especially in patients with neurological deficits. Also, we assumed high significant correlation between parameters of step initiation procedures and clinical tests. Methods: The 35 subjects with idiopathic PD and 35 agedmatched healthy controls participated in this study. The gait initiation was measured using two force platforms. The procedure consisted of three phases: (1) quiet standing on a first platform (2) crossing on the second platform, (3) quiet standing on a second platform. Testing was carried out in four conditions: unperturbed trial, obstacle crossing, step-up and step-down. Results: In the proposed gait initiation procedure, the vCOP, raCOP and rmsCOP showed an excellent reliability (ICC > 0.80). For transit phase, reliability of all variables in all conditions also was excellent (ICC = 0.8–0.9). There were only a few associations between Tinetti scores and posturographic variables in controls, but in PD patients the significant correlations were found between the proposed measures and the UPDRS, Tinetti, FRT, TUG and with the BBS. Conclusions: The proposed gait initiation procedure is reliable and very suitable for the assessment of patients with Parkinson’s disease. It can be used as an objective assessment of the clinical condition and dynamic balance, and help in the designing and programming of the appropriate rehabilitation and treatment.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 1; 3-10
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of postural stability in patients after reconstruction of the anterior cruciate ligament with LARS and autogenous graft
Autorzy:
Plocki, J.
Kotela, I.
Bejer, A.
Pelikan, P.
Granek, A.
Krawczyk-Suszek, M.
Powiązania:
https://bibliotekanauki.pl/articles/307030.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
postural stability
knee
ACL reconstruction
LARS
knee function
stabilność postawy
kolano
ACL
Opis:
The aim of the study was to assess static balance after reconstruction of the anterior cruciate ligament (ACL), using gracialis tendons graft (GR) or semi-tendinosus (ST), compared to patients treated with the Ligament Advanced Reinforcement System (LARS). The study was performed within 36 to 48 months after the surgery. Methods: The study included 96 patients. The LARS group consisted of 44 patients, control group operated with ST/GR tendons included 52 patients. The stabilometric platform Alpha was used to assess the static balance. Two 30-second trials in the double-leg stance position with eyes opened and closed were performed. The distribution of loads in a free standing was also assessed. Results: In the test with open eyes the subjects from the LARS group had a significantly longer center of pressure (COP) path, a higher mean velocity, a greater mean COP sway in foot in the lateral direction and a larger path area occupied by the COP graph. During the tests with eyes closed, a significant difference occurred in the mean displacement of COP in lateral direction – greater in the LARS group. In addition, all parameters deteriorated during the tests with eyes closed in both groups. Conclusions: In static balance assessed with eyes closed, more proprioceptive deficits may appear in the LARS group.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 4; 9-14
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of postural stability in patients with lumbar spine chronic disc disease
Autorzy:
Truszczyńska, A.
Dobrzyńska, M.
Trzaskoma, Z.
Drzał-Grabiec, J.
Tarnowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/307493.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
postawa ciała
ból przewlekły
stabilność
dysk
degenerative disc disease
postural stability
chronic pain
Lumbar intervertebral disc
Opis:
Purpose: The pain, motor and sensory deficits are common symptoms of the lumbar disc disorder, and they can significantly affect human postural control. The aim of this study was to assess postural stability in patients with severe symptoms of lumbar spine disc disease qualifying them for surgical treatment and to compare them with a control group. Methods The study involved 103 subjects: 54 patients and 49 healthy subjects. Patient’s mean age was 46.4 ± 11.3 years, mean body height 172.2 ± 10.3 cm, mean body mass was 83.1 ± 18.9 kg and mean body mass index (BMI) was 27.9 ± 5.2 kg m-2. The mean time of their recent pain episode was 9.7 ± 8.5 month. Results: We found statistically significant differences between postural stability in patients with lumbar spine disc disease and the control group. The measurements taken with eyes closed, as compared with the clinical control group, revealed higher and statistically significant values of the mean amplitude of COP, mean amplitude of COP on sagittal plane, and maximal sway in sagittal plane parameters. The analysis of pressure value differences between the right and left lower limbs in both groups revealed statistical significance. In the study population the difference was significantly greater in comparison to the control group. The patients has significantly greater asymmetry of lower limb load. Conclusions: 1. Patients with lumbar spine discogenic pain had decreased postural control. 2. The patients had significant asymmetry in foot pressure, resultant from pain radiating to a lower limb.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 4; 71-77
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badanie wpływu stabilności ciała na celność rzutu
Research on influence postural stability on throw accuracy
Autorzy:
Bereska, M.
Dobias, K.
Zurek, M.
Powiązania:
https://bibliotekanauki.pl/articles/99216.pdf
Data publikacji:
2013
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
celność
stabilność postawy
stabilografia
utrzymanie równowagi
accuracy
postural stability
stabilography
maintain balance
Opis:
Umiejętność utrzymywania równowagi spełnia ważne funkcje, nie tylko w życiu codziennym człowieka, ale również, odgrywa ważną rolę w wielu dyscyplinach sportowych. Jest to zdolność, która wymaga odpowiednich ćwiczeń, aby mogła jak najlepiej wpływać na wyniki osiągane w sporcie. Niestety niewiele osób uprawiających amatorsko Dart wie jak odpowiednio kontrolować równowagę, aby rzut w tarczę był jak najbliższy celu. Celem pracy jest przedstawienie podstawowych pojęć, koncepcji oraz metody umożliwiające analizę wpływu stabilności ciała na celność rzutu.
The ability to maintain balance fulfills important functions not only in everyday life of man, but also plays an important role in many sport disciplines. It is an ability that requires appropriate exercises to influence on the success achieved in sport. Unfortunately, few people doing amateur Dart know how to properly control the balance to make throw the shield close to the target. The paper presents the basic concepts, approaches and methods of analyzing the influence of the stability of the body on throwing accuracy.
Źródło:
Aktualne Problemy Biomechaniki; 2013, 7; 13-16
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differences in evaluation methods of trunk sway using different MoCap systems
Autorzy:
Kutilek, P.
Socha, V.
Cakrt, O.
Svoboda, Z.
Powiązania:
https://bibliotekanauki.pl/articles/306317.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
trunk
postural stability
camera system
orientation tracker
convex hull
confidence ellipse
pitch versus roll
tułów
stabilność
powłoka wypukła
Opis:
The position of the trunk can be negatively influenced by many diseases. Several methods can be used for identifying defects in balance and coordination as a result of pathology of the musculoskeletal or nervous system. The aim of this article is to examine the relationship between the three methods used for analysis of trunk sway and compare two fundamentally different MoCap systems. We used a camera system and a 3DOF orientation tracker placed on subject’s trunk, and measured inclination (roll) and flexion (pitch) during quiet stance. Ten healthy participants in the study were measured with eyes open and closed. The pitch versus roll plots of trunk were formed, and the area of the convex hull, area of confidence ellipse and total length of the trajectory of the pitch versus roll plot were calculated. The statistical analysis was performed and strong correlation between the area of the convex hull and area of the confidence ellipse was found. Also, the results show moderate correlation between the area of the confidence ellipse and total length of the trace, and moderate correlation between the area of the convex hull and total length of the trace. In general, the different MoCap systems show different areas and lengths but lead to the same conclusions. Statistical analysis of the participants with eyes open and eye closed did not show significant difference in the areas and total lengths of the pitch versus roll plots.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 2; 85-94
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of anthropometric factors on postural stability in individuals with hearing impairment
Autorzy:
Zdrodowska, A.
Wiszomirska, I.
Kaczmarczyk, K.
Kosmol, A.
Powiązania:
https://bibliotekanauki.pl/articles/306452.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
budowa ciała
stabilność postawy
uszkodzenie słuchu
antropometria
body composition
postural stability
balance
hearing impairment
anthropometry
Opis:
Identification of factors that affect postural stability may help to improve diagnostic accuracy and enhance the quality of treatment and rehabilitation. This study sought to assess the relationship between postural stability parameters and anthropometric factors of persons with hearing impairment (HI). Methods: The study included 128 individuals – 42 subjects with HI and 86 without HI (healthy controls). Research methodology included an interview and a medical examination, anthropometric measurements and stabilometric tests on platforms with stable and unstable surfaces. Results: In the group of female study participants with HI, significant correlations were only noted between body height and the Fall Risk Index (FRI). In the group of male subjects with HI, the study revealed significant correlations between FRI and body mass, BMI, % MM (muscle mass percentage) and % FAT (fat percentage). Moreover, moderate correlation was found between COP path with eyes open and body mass, while high correlation was observed between COP path with eyes open and BMI, % MM and % FAT. No significant correlation was noted between FRI and body height in men with HI. Conclusions: The examination of correlations between postural stability and body build of persons with HI did not confirm the effects of body height on postural stability in the examined group of individuals with HI, but revealed a greater influence of somatic parameters (body mass, BMI, % MM, % FAT) on postural stability in hearing-impaired men.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 109-115
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the accuracy of the postural stability measurement with the Y-Balance Test based on the levels of the biomechanical parameters
Autorzy:
Walaszek, R.
Chwała, W.
Walaszek, K.
Burdacki, M.
Błaszczuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/306519.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
biomechanika
staw kolanowy
stabilność postawy
testy
biomechanics
motor control
postural stability
Y-Balance Test
structure test
Opis:
The testing of dynamic balance involves tests that assess the muscle control of spatial changes of the position of the centre of gravity over the base of support. The purpose of this work was to determine the structure of the Y-balance test and its accuracy based on the measurements of strength performance of the muscles acting on the knee joint, as well as the flexibility and balance in boys aged 14 years. Methods: The study included 43 schoolboys regularly participating in physical education lessons. The examination of postural stability was conducted with the use of the Y-balance test. The measurements of muscle strength and of resistance to fatigue of the extensors and flexors of knee joints in isometric contraction were performed on a measurement stand in a standard position with the use of tensometric sensors. The measurement of mobility range of the lower extremity joints was performed according to the SFTR. The examination of balance was performed with the use of the modified ‘Flamingo balance test’. Results: The factor structure of the Y-balance test results for the left and right lower extremities is similar and includes five principal independent factors that characterise the structure of analysed variables. They explain 76% and 74% of communality in total for the left and the right extremity, respectively. Conclusions: The extracted factor structure points to a hybrid structure of the Y-balance test and shows its accuracy in the measurements of the lower limb joint mobility and strength performance of knee joint extensors.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 121-128
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena parametrów stabilogramu kobiet po 60 roku życia w warunkach wyłączenia kontroli wzrokowej
Assessment of parameters of stabilogram of women over 60 years of age without visual control
Autorzy:
Rykała, Justyna
Drzał-Grabiec, Justyna
Podgórska-Bednarz, Justyna
Snela, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/437841.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
stabilność posturalna
środek nacisku stóp
wiek podeszły
kobiety
postural stability
center of pressure
elderly
women
Opis:
Streszczenie Wstęp: Ocena stabilności ciała przeprowadzona przy użyciu platformy stabilometrycznej stanowi obiektywną metodę diagnostyczną. Porównanie parametrów stabilogramów otrzymanych w badaniu z oczami otwartymi i zamkniętymi umożliwia umożliwia ocenę kontroli postawy z wyłączeniem informacji wzrokowej. Celem badań była ocena parametrów stabilogramu kobiet po 60 roku życia, w warunkach wyłączenia kontroli wzrokowej. Materiał i metody: Do badań zakwalifikowano 98 kobiet w wieku powyżej 60 lat (x = 71 lat). Przy użyciu platformy stabilometrycznej, oceniono równowagę pozycji stojącej w próbie z oczami otwartymi oraz zamkniętymi. Analizowano 6 różnych parametrów ruchu środka nacisku stóp (COP – center of pressure). Wyniki: 1. W warunkach wyłączenia kontroli wzrokowej, istotnemu wydłużeniu uległa długość ścieżki stabilogramu w płaszczyźnie strzałkowej. Wartości całkowitej długości ścieżki, średniego wychylenia, średniej prędkości oraz wielkości pola powierzchni zakreślonej przez COP uległy zmianie w badaniu z wyłączeniem kontroli wzrokowej, jednak zmiany te nie okazały się istotne statystycznie.2. Wyłączenie bodźców wzrokowych przyczyniło się do skrócenia (poprawy) długości ścieżki stabilogramu w płaszczyźnie czołowej. Wnioski: 1. Wyłączenie kontroli wzrokowej prowadzi do istotnego wydłużenia długości ścieżki stabilogramu w płaszczyźnie strzałkowej (SPAP); 2. Długość ścieżki w płaszczyźnie czołowej (SPML) ulega skróceniu w próbie z oczami zamkniętymi.
Abstract Background: Assessment of the stability of the body performed by using stabilometric platform is an objective diagnostic method. Comparison of stabilograms’ parameters received from test with eyes open and closed, allows to assess the role of the visual senses involved in postural control. The aim of the study was to evaluate parameters of stabilogram of women over 60 years of age without visual control. Material and methods: 98 women (over 60 years of age, x = 71 years old) participated in the study. Standing balance was assessed in the trial with eyes open and closed, by using stabilometric platform. Six different motion parameters of center of pressure (COP) were evaluated. Results: 1. The results of this study indicate that in the trial without visual control, the path length in the sagittal plane was significantly longer. The values of: total path length, mean amplitude, mean velocity and sway area have worsened in the trial without visual control, but the result was not statistically significant. 2. Disabling visual control has contributed to reduction (improvement) of path length in the frontal plane.Abstract Background: Assessment of the stability of the body performed by using stabilometric platform is an objective diagnostic method. Comparison of stabilograms’ parameters received from test with eyes open and closed, allows to assess the role of the visual senses involved in postural control. The aim of the study was to evaluate parameters of stabilogram of women over 60 years of age without visual control. Material and methods: 98 women (over 60 years of age, x = 71 years old) participated in the study. Standing balance was assessed in the trial with eyes open and closed, by using stabilometric platform. Six different motion parameters of center of pressure (COP) were evaluated. Results: 1. The results of this study indicate that in the trial without visual control, the path length in the sagittal plane was significantly longer. The values of: total path length, mean amplitude, mean velocity and sway area have worsened in the trial without visual control, but the result was not statistically significant. 2. Disabling visual control has contributed to reduction (improvement) of path length in the frontal plane.
Źródło:
Medical Review; 2014, 1; 47-54
2450-6761
Pojawia się w:
Medical Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stabilności postawy ciała na podstawie badania przedniego i tylnego marginesu stabilnościu osób ze stwardnieniem rozsianym po fizjoterapii
Evaluation of postural stability based on a front and back stability margin of people with multiple sclerosis after rehabilitation
Autorzy:
Kielnar, R.
Mraz, M.
Oleksy, Ł.
Dębiec-Bąk, A.
Chantsoulis, M.
Powiązania:
https://bibliotekanauki.pl/articles/261365.pdf
Data publikacji:
2009
Wydawca:
Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:
stwardnienie rozsiane
stabilność postawy ciała
margines stabilności
posturografia
multiple sclerosis
postural stability
stability margin
visual-motor coordination
posturography
Opis:
Postępujący charakter stwardnienia rozsianego pogłębia ubytki neurologiczne oraz niepełnosprawność, która w niektórych przypadkach przybiera postać znacznego inwalidztwa. Do naj-częstszych problemów osób z SM (multiple sclerosis) należą zaburzenie chodu i równowagi. Różnorodność i zmienność objawów oraz trudny do przewidzenia przebieg choroby powodują, że rehabilitacja chorych jest skomplikowanym zadaniem. Celem pracy było określenie wpływu ćwiczeń równoważnych oraz ćwiczeń koordynacji wzrokowo-ruchowej (biofeedback) na stabilność postawy osób ze stwardnieniem rozsianym, zobrazowaną wielkością marginesu stabilności. Badaniami objęto 20 osób z SM w wieku od 22 do 67 lat. Efektem zastosowanych ćwiczeń było uzyskanie istotnie większego przedniego marginesu stabilności (p = 0,00004). Natomiast tylny margines stabilności uległ nieistotnej statystycznie zmianie. Uzyskany istotny wzrost parametru koordynacji wzrokowo--ruchowej (p = 0,0003) wskazuje na większą skuteczność świadomej autokorekcji postawy z zastosowaniem wzrokowego sprzężenia zwrotnego. Uzyskane wyniki dowodzą większej sprawności kon-troli postawy u osób chorych na SM po fizjoterapii.
Progressive nature of the multiple sclerosis (SM) results in the increase of neurological defects and the intensification of disability which in some cases turns into notable invalidity. The most regnant symptoms of SM are gait disorders and impaired balance. Rehabilitation of patients suffering from SM is complicated due to the variability and changeability of symptoms and difficulties in predicting illness course. The aim of the study was to examine the influence of the stability training and visual-motor coordination exercises (biofeedback) on the body stability. 20 patients between 22 and 67 years of age were enrolled into this study. The result of exercises was significance improvement of front stability margin (p = 0,00004). However, back stability margin insignificantly changed insignificantly only. The significancet improvement of visual-motor coordination (p = 0,0003), was observed, it means the improvement of the effectiveness of self correction of posture based on a conscious visual control of own posture (biofeedback). This study has shown that physiotherapy resulted in better postural control of patients with SM.
Źródło:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2009, 15, 3; 226-229
1234-5563
Pojawia się w:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stabilności posturalnej podczas strzelania
Evaluation of postal stability during archery
Autorzy:
Błażkiewicz, Michalina
Kędziorek, Justyna
Bańkowska, Sylwia
Wit, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2201481.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
stabilność posturalna
entropia
łucznictwo
biomechanika
postural stability
entropy
archery
biomechanics
Opis:
Celem pracy była ocena stabilności posturalnej podczas strzelenia z łuku. W badaniach wzięły udział dwie grupy: zawodowi łucznicy oraz amatorzy, tzn. osoby, które nigdy nie strzelały z łuku. Badania zostały przeprowadzone przy użyciu systemu Vicon i platform Kistler. Do obliczeń zostały eksportowane położenia środka masy ciała. Następnie została policzona długość drogi CoM w przestrzeni 3D oraz współczynniki entropii próbkowej. Wykazano, że długość drogi CoM w przestrzeni 3D jest istotnie (p = 0.0001) dłuższa u łuczników podobnie jak współczynnik entropii próbkowej wzdłuż osi pionowej (p = 0.0117).
The aim of the work was to assess postural stability during archery. Two groups participated in the study: professional archers and amateurs, i.e. people who never shot a bow. The tests were carried out using the Vicon system and Kistler platforms. Body mass center positions were exported to calculations. Next, the CoM distance in 3D space and sample entropy coefficients were calculated. It was shown that the distance of the CoM path in 3D space is significantly (p = 0.0001) longer in archers, similarly as the sample entropy coefficient along the vertical axis (p = 0.0117).
Źródło:
Aktualne Problemy Biomechaniki; 2019, 17; 5--10
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena stabilności posturalnej w funkcji różnego ustawienia stóp na podłożu przy wykorzystaniu miar dynamiki nieliniowej
Assessment of postural stability as a function of changing support surface
Autorzy:
Kędziorek, Justyna
Błażkiewicz, Michalina
Powiązania:
https://bibliotekanauki.pl/articles/2201496.pdf
Data publikacji:
2020
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
stabilność posturalna
miary nieliniowe
biomechanika
postural stability
non-linear measures
biomechanics
Opis:
Celem pracy była ocena stabilności posturalnej w różnych warunkach podparcia: stanie obunóż, jednonóż i w tandemie przy oczach otwartych. W badaniach wzięła udział grupa trzydziestu trzech zdrowych osób w wieku 21.88 ± 1.65 lat. Badania zostały przeprowadzone przy użyciu platformy AMTI AccuSway (30 sekund – każda próba). Do obliczeń eksportowano położenia środka nacisku stóp na podłoże (CoP) w płaszczyznach x i y. Następnie została policzona długość drogi CoP i współczynniki dynamiki nieliniowej: entropia próbkowa, wymiar fraktalny i wykładnik Lapunowa. Wykazano, że zmniejszenie pola powierzchni podparcia powoduje istotny wzrost współczynnika entropii próbkowej i wymiaru fraktalnego.
The aim of the study was to assess postural stability under different base of support: both foot standing, one-leg standing and tandem with eyes open. A group of thirty-three healthy persons aged 21.88 ± 1.65 years participated in the study. The tests were carried out using the AMTI AccuSway platform. The locations of the center of foot pressure (CoP) in the X and Y planes were exported. Then the CoP path length and nonlinear dynamics coefficients were calculated: sample entropy, fractal dimension and Lapunov exponent. It has been shown that the reduction of the support surface area causes a significant increase in the sample entropy factor and the fractal dimension.
Źródło:
Aktualne Problemy Biomechaniki; 2020, 19; 20--26
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postural stability and functional disorders in patients with loosened hip prosthesis
Autorzy:
Drzał-Grabiec, Justyna
Truszczyńska-Baszak, Aleksandra
Tarnowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/306972.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
postural stability
hip prosthesis loosening
balance disorders
stabilność postawy
endoproteza
zaburzenia równowagi
Opis:
The number of primary hip arthroplasties is growing every year. One of the most common long complications is the aseptic loosening of the prosthesis leading to serious complications in patients life, pain and following surgeries. In the literature, there is a lack of studies regarding balance impairment in this group of patients, which is why there was a need to conduct the study in order to find possible falling risk factors and simple functional, diagnostic test. The aim of the study was to assess functional state and static balance disorders in patients admitted to orthopaedic department due to loosened hip prosthesis prior to its replacement or removal. Methods: The study population were 30 patients (15 women and 15 men) admitted to Orthopaedic Department for diagnosis and treatment of loosened hip prosthesis. Patients’ mean age was 71.67 ± 9.21, body height 169.20 ± 8.75 cm, body weight 77.83 ± 12.96 kg. The clinical control group consisted of 30 healthy subjects age-, body height- and weight-matched, without degenerative disorders of lower extremities. Function was assessed with Harris Hip score. The static balance test was conducted in the mornings, in quiet separate room on bi-modular stabilometric platform CQStab2P, registering the movement of centre of foot pressure (COP). Results: Measurements with eyes open and closed showed significant differences in limb loads – the load to the healthy limb was several times greater. Results of tests on the platform with eyes closed showed significantly worse balance in patients group. Their total statokinesiogram path was longer, and their COP sways number was greater. Similarly to the test with eyes open, the load of the healthy limb was much greater. Conclusion: Hip replacement loosening results in significant worsening of balance parameters. Balance assessment could be an additional useful diagnostic tool for hip replacement loosening available for physiotherapists.
Źródło:
Acta of Bioengineering and Biomechanics; 2020, 22, 1; 41-46
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
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