Search results for " activity"

Disrupting neural activity related to awake-state sharp wave-ripple complexes prevents hippocampal learning

2012

Oscillations in hippocampal local-field potentials (LFPs) reflect the crucial involvement of the hippocampus in memory trace formation: theta (4–8 Hz) oscillations and ripples (~200 Hz) occurring during sharp waves are thought to mediate encoding and consolidation, respectively. During sharp wave-ripple complexes (SPW-Rs), hippocampal cell firing closely follows the pattern that took place during the initial experience, most likely reflecting replay of that event. Disrupting hippocampal ripples using electrical stimulation either during training in awake animals or during sleep after training retards spatial learning. Here, adult rabbits were trained in trace eyeblink conditioning, a hippoc…

Individual Creativity and Career Choices of Pre-teens in the Context of a Math-Art Learning Event

2021

A sample of 392 students (aged 12-13 years, M± SD: 12. 52% girls) completed a learning module integrating informal hands-on mathematics and arts activity (extending STEM to STEAM). Within a 140 minute workshop period participants worked with commercially available ‘4Dframe’ Math and STEAM learning toolkits to design and create original, personal and individual geometrical structures. Two science pedagogues acted as tutors supervising the process and intervened only when needed. A pre-/post-test design monitored individual creativity, relative autonomy, and career choice preference. Path analysis elaborated the role of creativity (measured with two subscales: act and flow), and it showed tha…

Physical activity measured by accelerometry among adolescents participating in sports clubs and non-participating peers

2022

The purpose of this descriptive cross-sectional study is to describe the amount and intensity of physical activity (PA) measured by accelerometry among adolescents participating in organized sports (SCP) and age-matched non-participating peers (NP). SCPs (332) and NPs (139) wore an accelerometer on the hip for seven days. PA was reported using the 1-min exponential moving average. The current moderate-to-vigorous physical activity (MVPA) recommendation of at least an average of 60 min of MVPA daily was reached by 85% of SCPs and 45% of NPs (p < .001). During training days, the MVPA times among SCPs ranged from 153 ± 39 min in males and 109 ± 35 min in females participating in basketball to …

Leisure-time physical activity and participation in organized sports : changes from 1985-2014 in Finland and Norway

2019

Participation in organized sports is a popular and important part of the lives of children and adolescents and is associated with improved psychological and social health, as well as an increased likelihood of meeting physical activity (PA) recommendations. Changes in modern society, including increased car ownership and use of technology and electronic media, have led to an additional focus on the importance of health‐enhancing PA among children and adolescents. The aim of this article was to study the secular changes in self‐reports of participation in organized sports clubs and leisure‐time vigorous physical activity (LVPA), and whether the relationship between participation in organized…

Kavereiden tuen yhteys lasten ja nuorten liikunta-aktiivisuuteen ja seuraharrastamiseen

2017

Tämän pro gradu -tutkielman tarkoituksena oli selvittää kavereiden yhteyttä lasten ja nuorten liikunta-aktiivisuuteen ja urheiluseurassa harrastamiseen. Tutkielmassa tarkasteltiin viides-, seitsemäs- ja yhdeksäsluokkalaisten lasten ja nuorten liikuntakäyttäytymistä sekä sitä, millainen yhteys heidän kavereillaan siihen oli. Tutkimus perustui maaliskuussa 2016 kerättyyn valtakunnallisen LIITU-tutkimuksen aineistoon. LIITU-tutkimuksen aineisto kerättiin sähköisellä kyselylomakkeella ja vastaajia oli yhteensä 5586. Vastaajista 1989 oli viidesluokkalaisia, 1948 seitsemäsluokkalaisia ja 1649 yhdeksäsluokkalaisia. Aineisto analysoitiin ristiintaulukoinnilla, khiin neliötestillä (χ²) sekä yksisuun…

Synthesis, structural characterization and antitumor activity of di- and tri-organotin(IV) complexes of D-galacturonic acid

2015

Outdoor activities and motor development in 2–7-year-old boys and girls

2021

Problem Statement: Parents of young children favor indoor activities for their children, because staying inside supports comfortable daily routines in the family timetable, safety issues and clothing. However, playing outdoors supports children’s development, offering multiple challenges to overcome and the possibility to learn new skills. Approach: Based on Gibson’s theory of affordances (1977), outdoors can be seen as an excellent learning environment for children to reach the zone of proximal development (Vygotsky, 1987). Purpose: This paper describes Finnish nature and four seasons as an environment to support children’s motor development and inspire outdoor playing. The Skilled kids pa…

Influence of harvesting time on composition of the essential oil of Thymus capitatus (L.) Hoffmanns. & Link. growing wild in northern Sicily and its …

2019

One of the main factors affecting historical art crafts material is the biodeterioration performed by bacteria and fungi, in archives, museums or private collections. Several microorganisms cause degradation to the natural organic material such as fibers, woods, and dyes as well as to stone objects. These alterations produce deterioration of physical, chemical, mechanical and esthetic properties. Consequently, in this publication, we report the high antibacterial and antifungal activities of wild thyme essential oil, oil that can be used as an alternative natural tool in the fight against microorganisms affecting historical art crafts.Essential oil of the Thymus capitatus growing wild in no…

Effects of exercise intensity on recovery of autonomic nervous system immediately after exercise and during sleep, and on subjective and objective sl…

2010

Syväoja, Heidi. 2010. Effects of exercise intensity on recovery of autonomic nervous system immediately after exercise and during sleep, and on subjective and objective sleep quality. Master´s thesis in Exercise Physiology. Department of Biology of Physical Activity. University of Jyväskylä, 90. The exercise can be considered as a one form of stress, because it induces marked changes in the autonomic regulation of heart rate (HR). During acute exercise, parasympathetic activity decreases and sympathetic activity increases. Parasympathetic activity declines a lot or even disappears, when the exercise intensity is high. After acute exercise cessation, fast changes occur in the cardiac functio…

Parenthood and changes in physical activity from early adulthood to mid‐life among Finnish adults

2022

This study examined longitudinal associations between parenthood-related factors and physical activity from young adulthood to midlife over a 19-year follow-up period. Participants (n=761) at the ongoing Cardiovascular Risk in Young Finns Study responded to a self-report questionnaire in their adulthood (in 1992, 2001, 2007 and 2011). Participants were classified as meeting or not meeting an aerobic physical activity recommendation. Parenthood related factors included the age of having their first child, as well as the number and age of the children. Analyses of Generalized Estimation Equations were performed and adjusted for several demographic and health-related covariates. Both mothers a…