Browsing by Author "Umbrasko, Silvija"

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    Changes in muscular strength based on full cervical flexion
    (EDP Sciences, 2018) Vetra, Janis; Skļarevičs, Vladimirs; Anoufriev, Gregory; Kalnins, Imants; Vetra, Janis, Jr.; Umbrasko, Silvija; Kotovs, Vladislavs; Beilina, Larisa; Berķis, Uldis; Vilka, Lolita; Rīga Stradiņš University
    We present our study of influence full cervical flexion position on the changes in muscle strength of the upper extremities. This position is typical for a person working on mobile phone or iPad. The purpose of the study was determination of the connection between change of the head flexed position and changes in upper extremity muscles strength. The present study involved 80 healthy volunteers and was performed at the Department of Morphology in Riga Stradins University, Riga, Latvia. For measurements we have used the MicroFET2 Hand Held Digital Muscle Tester to determine the strength of the muscles of the hand and arm (M. abductor pollicis longus, M. biceps brachii, M. triceps brachii, M. deltoideus). The results of measurements were then used to analyze the difference in the strength of the muscles innervated by the spinal cord cervical region (C5–C8 nerves) for the same person sitting in the vertical position and sitting with the head flexed maximally. The results of our study support the hypothesis that the changes in the strength of measured muscles are related to the mechanical distension of the spinal cord, which leads to changes in spinal cord’s blood supply. The kyphotic position of the cervical spine during head flexion shows that in the spinal cord segments C5 and C7 are formed mechanical distension. Using our statistical study, we can conclude that there is strong relationship in the strength change in some of the observed muscles between vertical position and full flexion of head
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    Influence of high physical load endurance exercises on the anthropometric parameters and health status of military personnel
    (EDP Sciences, 2018) Plavina, Liana; Vellere, Natalija; Umbrasko, Silvija; Berķis, Uldis; Vilka, Lolita; Rīga Stradiņš University
    Military personnel are in high-risk group for health disorders, musculoskeletal pathology and psychological overload. We provide evaluation of the anthropometric parameters and health status of military personnel, Cadets, who have participated in ten days duration Combat training course. Combat training course is associated with life-style change – social, environmental, climate and geographical conditions, biorhythms, nutrition etc., with an increase in physical and psych emotional loads. It is characterized with transition from daily routine of military study process in National Defence academy to military exercise in external environment. Cadets faced to feeding limitation, sleeping deprivation intensive and continuous training, strict discipline etc. We provided analysis of anthropometric parameters before, and in time of Combat training course, summarized data of health statement and health problems that were fixed in the medical cards. The proper body mass supports good health capacity and we provided assessment of it. Physical fitness and body composition have adverse effect on military performance. Body composition undergoes changes during higher physical load performance. Military personnel have high risk to health, concerning impact of external and internal factors. According the review of medical cards of cadets group, we indicated main problems, which are fixed after the Combat training course.