Search results for "EMG"
showing 10 items of 109 documents
Hip muscle function in patients with symptomatic femoroacetabular impingement
2014
Femoroacetabular impingement (FAI) is a pathomechanical process of the hip joint, which could lead to hip pain and functional disability. Aim of this thesis was to investigate hip muscle function in patients with a symptomatic FAI. Hip muscle function was first investigated before patients underwent any surgical treatment for managing FAI. It was shown that they present with reduced hip muscle strength (i.e., muscle weakness), probably due to hip muscle inhibition. Nevertheless, hip muscle weakness was not associated with exaggerated hip muscle fatigue. Hip muscle strength recovery was then evaluated in a series of patients after hip arthroscopy to treat FAI. These patients demonstrated a g…
''Isokinetic intervention in microtraumatic shoulder instability: an update''
2012
Gremeaux, V. | Croisier, J. L. | Forthomme, B.; International audience; ''Aim. Aim of the present study was to carry out a critical analysis of the use of isokinetic dynamometers for evaluation and rehabilitation in microtraumatic shoulder instability. Methods. A non-systematic literature review was conducted on Medline using the following key words: "isokinetics", "shoulder instability", "evaluation", "rehabilitation". We also analyzed the related articles, and compiled a database of expert opinion. Results. Despite a lack of consensus on testing modalities, lateral and medial rotator muscle strength can be safely and reliably assessed on isokinetic devices in subjects presenting with micr…
ASSESSMENT OF ECOSYSTEM SERVICES FOR PLANNING OF GREEN INFRASTRUCTURE AT THE REGIONAL LEVEL
2019
Ecosystem services (ES) are defined as the benefits that human beings derive from ecosystem functions. Assessment and mapping of these benefits are crucial for sustainable environmental planning and future natural capital. Green infrastructure (GI) is natural or semi-natural territories that provide wide range of ES. Human affected ecosystems tend to fail to provide certain sets of ES due to the trade-offs among those services, which could be mitigated through implementation of GI. Mapping of ES, as well as assessing the interactions among various ES and analysing their supply potential’s cold/hot spots considerably enhances and substantiates the planning process of GI, particularly at the …
Helēnas Ledus dzimtenes mīlestība
2022
Raksts par latviešu botāniķes Helēnas Ledus-Starcas (1915 – 2005) dzīvi, zinātnisko un sabiedrisko darbību.
Comparing Surface and Fine-Wire Electromyography Activity of Lower Leg Muscles at Different Walking Speeds.
2019
Ankle plantar flexor muscles are active in the stance phase of walking to propel the body forward. Increasing walking speed requires increased plantar flexor excitation, frequently assessed using surface electromyography (EMG). Despite its popularity, validity of surface EMG applied on shank muscles is mostly unclear. Thus, we examined the agreement between surface and intramuscular EMG at a range of walking speeds. Ten participants walked overground at slow, preferred, fast, and maximum walking speeds (1.01 ± 0.13, 1.43 ± 0.19, 1.84 ± 0.23, and 2.20 ± 0.38 m s–1, respectively) while surface and fine-wire EMG activities of flexor hallucis longus (FHL), soleus (SOL), medial gastrocnemius (MG…
Nelipistevyötuennan vaikutus ylävartalon lihasaktiivisuuteen, selkälihasten refleksivasteeseen ja lihasväsymykseen työkoneperäisessä tärinäaltistukse…
2013
Jylänki, Juha Petteri 2013. Nelipistevyötuennan vaikutus ylävartalon lihasaktiivisuuteen, selkälihasten refleksivasteeseen ja lihasväsymykseen työkoneperäisessä tärinäaltistuksessa. Liikuntabiologian laitos, Vuotech, Jyväskylän Yliopisto. Biomekaniikan pro gradu –tutkielma, 94 s. Tämän tutkimuksen tarkoituksena oli selvittää nelipistevyön tuennan merkitys pitkäkestoisessa (7x8 min) työkoneperäisessä tärinäaltistuksessa. Tuennan vaikutusta tutkittiin mittaamalla altistuksen aiheuttamaa lihasaktiivisuutta altistuksen aikana, sekä altistuksen jälkeistä lihasväsymystä. Tutkimuksessa pyrittiin hakemaan myös yhteyttä lihasaktiivisuuden ja koehenkilöiden kokeman subjektiivisen rasituksen välillä. …
Kurzemes un Zemgales hercogistes landtāgā skatīto jautājumu analīze (1682-1698)
2018
Pētījums veltīts maz pētītam jautājumam Latvijas vēsturē Kurzemes un Zemgales hercoga Frīdriha Kazimira valdīšanas laikam, jo 17. gadsimta nogales hercogistes vēstures pētniecība palikusi hercoga Jēkaba valdīšanas laika un 18. gadsimta sākuma cīņas par varu hercogistē ēnā. Pētījuma mērķis ir caur hercogistes landtāgu lēmumiem analizēt aktualitātes un problēmas laika periodā no 1682. gada līdz 1698. gadam. Pētījuma izstrādes laikā tika iegūta informācija par aktuāliem jautājumiem hercogistē saistībā ar baznīcu, zemnieku dzīves regulējumu, ekonomiku un tirdzniecību un ārpolitiku. Landtāgu lēmumu analīze atklāja būtisku visas hercogistes pastāvēšanas laika posma iezīmi – hercoga un muižniecība…
Mazo un vidējo uzņēmumu attīstība Zemgalē
2015
Bakalaura darba tēma ir Mazo un vidējo uzņēmumu attīstība Zemgalē. MVU Latvijā sastāda 99% no visiem uzņēmumiem un tiem ir ļoti būtiska nozīme tautsaimniecībā, jo tie tieši ietekmē bezdarba līmeni valstī un iedzīvotāju labklājību. Turklāt mazie un vidējie uzņēmumi rada lielāko daļu iekšzemes kopprodukta. Reģistrēto uzņēmu skaits ir strauji audzis kopš 2010. gada, taču liela daļa jauno uzņēmumu savu darbību pārtrauc pirmajos trīs gados, jo nākas saskarties ar dažādām attīstības problēmām, kā piemēram, nodokļu slogs, konkurence, mazs pieprasījums, kvalificētu darbinieku trūkums u. c. Attīstītākā uzņēmējdarbības vide ir Rīgā, kur arī ir reģistrēti vairāk kā puse Latvijas uzņēmumu. Sarežģītāk i…
Influence of different attentional focus on EMG amplitude and contraction duration during the bench press at different speeds
2018
The purpose of this study was to investigate whether using different focus affects electromyographic (EMG) amplitude and contraction duration during bench press performed at explosive and controlled speeds. Eighteen young male individuals were familiarized with the procedure and performed the one-maximum repetition (1RM) test in the first session. In the second session, participants performed the bench press exercise at 50% of the 1RM with 3 different attentional focuses (regular focus on moving the load vs contracting the pectoralis vs contracting the triceps) at 2 speed conditions (controlled vs maximal speed). During the controlled speed condition, focusing on using either the pectoralis…
Specific patterns of laryngeal electromyography during wakefulness are associated to sleep disordered breathing and nocturnal stridor in multiple sys…
2016
Abstract Background Nocturnal stridor and respiratory abnormalities are important features of multiple system atrophy (MSA) with relevance to patient survival, and they are detected and evaluated mainly through video-polysomnography (video-PSG). Diurnal laryngoscopy seems to yield abnormal findings only in the presence of significant vocal cord (VC) dysfunction. Aim To assess whether specific electrophysiological patterns of diurnal EMG of VC muscles may indicate nocturnal stridor or respiratory dysfunctions in MSA patients. Materials and methods Seventeen patients with probable MSA were examined. A full-night video-PSG to collect standard breathing parameters (apnea/hypopnea index, mean Hb…