Search results for "Centre of pressure"
showing 7 items of 7 documents
Redzes ietekme uz stāju
2017
Maģistra darbs ir uzrakstīts angļu valodā uz 45 lapām. Tas satur 28 attēlus un 40 literatūras atsauces. Darba mērķis bija izvērtēt optometriskās ārstēšanas ietekmi uz stājas izmaiņām. 11 pacientiem tika veikti mērījumi ar datorizētu stabilometrijas platformu pirms un pēc redzes treniņu veikšanas. Pacientam stāvot ar atvērtām acīm, pēc redzes treniņiem svara sadalījums bija sabalansētāks priekšēji-mugurējās ass virzienā, spiediena centrs nobīdījās tuvāk teorētiskajam centram, kā arī svārstību ātrums, amplitūda un laukums samazinājās. Pacientam stāvot ar aizvērtām acīm, nenovēroja nozīmīgas izmaiņas pirms un pēc ārstēšanas. Līdz ar to, redzes kvalitātes uzlabošana var tieši ietekmēt pacienta …
Improvement of balance in a 7-year-old child through a six-week learning programme
2018
Given that human beings are constantly subjected to equilibration processes, developing basic perceptual motor skills, especially balance, is important. The main purpose of this study is the validation of the tasks and the progression of activities that form the learning programme for balance development in a six-week didactic unit of 12 sessions (2 sessions per week), for 6 to 9 year old children (1st, 2nd, and 3rd grade of elementary school in Brazil). The changes in balance after applying the programme are also analysed through a new measuring protocol using baropodometry. Although the session was put into practice in a class of 28 children, data were extracted from a 7-year-old child. T…
Comparison of posturographic parameters between young taekwondo and tennis athletes
2018
[Purpose] Physical activity can influence the development of postural control and balance. Therefore, the aim of study was to use posturography assessment to compare balance control on the Romberg test between athletes in two very different sports, taekwondo and tennis. [Participants and Methods] Twenty-nine young athletes participated in the study, 11 forming the taekwondo group and 18 the tennis group. Posturography was performed using the FreeMed system (Sensor Medica). Between-group differences were evaluated using unpaired Student’s t-test. [Results] There was a significance between-group difference in the centre of pressure and the ellipse surface area with no between-group difference…
Effects of different unstable supports on EMG activity and balance
2013
This study analysed the equilibrium strategies and EMG activity during postural equilibrium in four different unstable surfaces. Thirteen team sport males were tested on a FLAT surface and on three different wobble boards (JAKOBS(®) with easy multidirectional displacements, FREEMAN with strong multidirectional displacements and LATERAL with unidirectional lateral displacements). They had to maintain single-limb stance during 5s for each condition. The right foot centre of pressure (COP) position and its variability with concomitant EMG activity of soleus (SOL), tibialis anterior (TA), peroneus longus (PL) and extensor digitorum longus (EXD) muscles were recorded. Subjects maintained balance…
Postural stability in subjects with whiplash injury symptoms: results of a pilot study
2014
Posturographic tests can be used to assess and confirm the body's imbalance in subjects with whiplash injury. Further studies with larger cohorts are necessary to confirm this pilot study.To verify through a posturographic exam the qualitative and quantitative alterations of postural stability in subjects with previous cervical trauma in comparison with healthy subjects.A total of 42 subjects were analysed for the study; 22 as the control group (NM) and 20 (WM) with a positive anamnesis of whiplash injury from 3 to 12 month from diagnosis through a force platform. Centre of pressure (CoP) movements of the two groups with their eyes open and closed were recorded.During the closed eye test, t…
Postural Adaptations in Preadolescent Karate Athletes Due to a One Week Karate Training Camp
2013
Abstract The aim of this study was to investigate the effect of an increasing number of training hours of specific highintensity karate training on postural sway in preadolescent karate athletes. Seventy-four karatekas were randomly assigned to 1 of 2 groups: Karate Group (KG=37): age 10.29±1.68 yrs; or Control Group (CG= 37): age 10.06±1.77 yrs. The KG performed two sessions per day for 1 week in total, while the CG performed only 3 sessions during the same period. The center-of-pressure length (COPL) and velocity (COPV) were recorded under four different experimental conditions: open eyes (EO), closed eyes (EC), open eyes monopodalic left (EOL), open eyes monopodalic right (EOR), pre as w…
Assessment of haemophilic arthropathy through balance analysis: a promising tool
2019
[EN] The purpose of this study was to develop a tool able to distinguish between subjects who have haemophilic arthropathy in lower limbs and those who do not by analyzing the centre of pressure displacement. The second objective was to assess the possible different responses of haemophiliacs and healthy subjects by creating a classifier that could distinguish between both groups. Fiftyfour haemophilic patients (28 with and 26 without arthropathy) and 23 healthy subjects took part voluntarily in the study. A force plate was used to measure postural stability. A total of 276 centre of pressure displacement parameters were calculated under different conditions: unipedal/bipedal balance with e…