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Responsiveness of Electromyographically Assessed Skeletal Muscle Inactivity – methodological exploration and implications for health benefits
2022
Abstract Prolonged sedentary behaviour is detrimental to health due to low contractile activity in large lower extremity muscle groups. This muscle inactivity can be measured with electromyography (EMG), but it is unknown how methodological factors affect responsiveness longitudinally. This study aimed to rank 16 different EMG inactivity thresholds based on their responsiveness (absolute and standardized effect size, responsiveness) using data from a randomized controlled trial targeted at reducing and breaking up sedentary time (InPact, ISRCTN28668090). EMG inactivity duration and usual EMG inactivity bout duration (weighted median of bout lengths) were measured from large lower extremity …
En kvalitativ studie om ungdom, tro og psykisk helse : Troen har ganske mye å si for din psykiske helse. Det er et fundament for hvordan du takler li…
2019
Masteroppgave psykisk helsearbeid ME504 - Universitetet i Agder 2019 Background:The theme of this study is "Youth, Faith and Mental Health". The background for choosing this theme is the major focus of our time on adolescents and their mental health. According to the Institute of Public Health (2009), 15-20% of children and youth have mental health problems, with complex symptoms that influences their well-being, learning ability, daily activities and socializing with others.Purpose:The purpose of this study is to investigate the coherence between Christian faith and mental health in adolescents. The following issue was selected: what coherences does youth experience concerning their person…
Effects of an eccentric training programme on hamstring strain injuries in women football players
2015
Summary Study aim: to test the hypothesis that an eccentric training programme applied on women football players would reduce the hamstring injury rate by improving thigh muscle balance and, particularly, hamstring strength. Material and methods: three football teams were recruited for this randomised controlled trial. They played in the first and second divisions in Spain. Players were randomised within clubs either to the intervention (eccentric exercises, n = 22) or control (control exercises, n = 21) groups, and randomisation was stratified according to previous history of thigh strains. The eccentric programme was divided into 3 phases, and each phase was composed of 7 weeks. Complianc…
Biceps Femoris Long Head Muscle Fascicles Actively Lengthen During the Nordic Hamstring Exercise
2021
Current debate exists around whether a presumed eccentric exercise, the Nordic hamstring exercise (NHE), actually causes active hamstring muscle lengthening. This is because of the decoupling that can occur between the muscle fascicle and muscle-tendon unit (MTU) length changes in relatively compliant human lower-limb MTUs, which results in MTU lengthening not necessarily causing muscle fascicle lengthening. This missing knowledge complicates the interpretation of why the NHE is effective at reducing running-related hamstring muscle injury risk in athletes previously unfamiliar with performing this exercise. The purpose of the study was therefore to investigate if the most-commonly injured …
Bortvalg av videregående skole og mestringstro : En kvalitativ studie av unge jenter som har valgt å slutte på videregående skole
2017
Masteroppgave psykisk helsearbeid ME504 - Universitetet i Agder 2017 The projects background is a request from the University of Agder to look for reasons why some girls may choose to drop out of high school focusing on their relationship with their contact or main teacher. The purpose of this study is to explore what role self-efficacy has in the effort to increase the percentage of children an adolescents completing high school. It has been important to search for previous experiences to find out why their self-efficacy is at such a low level and if it can have affected their decision to drop out of high school. The issue is: ”which experiences can influence the decision of dropping out o…
Bedringsprosesser i et hverdagsperspektiv : Hvilken betydning kan mestring av daglige aktiviteter ha for rusmiddelavhengiges vei mot rusfrihet og opp…
2017
Masteroppgave psykisk helsearbeid ME504 - Universitetet i Agder 2017 The World Health Organization expects mental illnesses, including drug addiction, to be the main cause of disease in Western countries by 2020. Recommended measures in order to meet these health challenges are facilitating recovery, empowerment, local services and social inclusion. The purpose of this study has been to investigate which importance coping with daily activities has for drug addicts in a rehabilitation phase. The study is qualitative with a phenomenological starting point. Through individual interviews with four drug addicts, we wanted them to describe their everyday life activities. The subjects were living …
Effect of low-load hamstring strength training on the H/Q ratio and electromyographic activity in various gymnastic actions in young aesthetic group …
2013
Muscle balance is an important factor for decreasing injury risks among sports, as weak ago-nist-antagonist strength ratio may predispose to injuries. Hamstring-to-quadriceps (H/Q) strength ratio has been studied in several sports in order to describe the muscular balance of thighs. During pubertal longitudinal growth, hamstrings may be weaker due to the mechanical stress of growth. As both hamstring flexibility and knee extension strength are important for aesthetic group gymnastics (AGG), the H/Q strength ratio might be expected to be low among this sport. Describing muscle activation patterns of hamstrings and quadriceps femoris in AGG actions is efficient for determining the H and Q act…
A New Feature Selection Methodology for K-mers Representation of DNA Sequences
2015
DNA sequence decomposition into k-mers and their frequency counting, defines a mapping of a sequence into a numerical space by a numerical feature vector of fixed length. This simple process allows to compare sequences in an alignment free way, using common similarities and distance functions on the numerical codomain of the mapping. The most common used decomposition uses all the substrings of a fixed length k making the codomain of exponential dimension. This obviously can affect the time complexity of the similarity computation, and in general of the machine learning algorithm used for the purpose of sequence analysis. Moreover, the presence of possible noisy features can also affect the…
Sammenhengen mellom selvhandikapping, frykt for å feile og mestringstro i kroppsøving : En kvantitativ undersøkelse blant ungdomsskoleelever på Vestl…
2019
Master grunnskolelærerutdanning for trinn 5-10, 5-årig masterprogram IDR507 - Universitetet i Agder 2019 The purpose of this study was to gain more knowledge about the concepts of self-handicapping, self-efficacy and fear of failure in physical education, and also to investigate potential variation when it comes to school leveland gender among pupils in secondary school.The aimof thisstudy was twofold; 1) to investigate differences in the relevant concepts on the basis of school leveland gender and 2) to investigate relationships between the different concepts. Part 2 is more specifically related to examining the predictive ability of fear of failure and self-efficacy on self-handicapping. …
Parametrizētu algoritmu paātrinājumi kvantu datoram
2021
Darbā tiek aplūkots, kā uz kvantu datora iespējams paātrināt zināmus parametrizētus algoritmus problēmām “Closest string”, “Cluster vertex deletion”, “Cluster editing”, “Vertex cover” un “Longest path” problēmu risinājumiem, ka arī to uzlabošana kvantu datoram, izmantojot kvantu algoritmus meklēšanas koka apstaigāšanai un dinamiskai programmēšanai. Ir parādīts, kā izveidot kvantu algoritmus “Cluster vertex deletion” problēmas risinājumam ar laika sarežģītību 𝑂(1.7321^𝑘 * √𝑘 * 𝑛^3) un “Vertex cover” problēmai ar laiku 𝑂(1.175^𝑘 * 𝑘^𝑂(1) + 𝑛√𝑚), kas ir labāk, nekā labākajiem zināmajiem algoritmiem ar laiku 𝑂(1.9102^𝑘 * (𝑛 + 𝑚)) un 𝑂(1.2738^𝑘 + 𝑘𝑛), attiecīgi. Ka arī ir parād…