Search results for "hormonit"

Active and passive recovery influence responses of luteinizing hormone and testosterone to a fatiguing strength loading

2018

The purpose of this study was to examine the acute hormonal and muscular responses to a strenuous strength loading [bilateral leg press (LP) 10x10 1RM] followed by loading-specific active (AR, n = 7, LP 10x10x30% 1RM) or passive (PR, n = 11, seated) recovery. The subjects were men age: 26±4 years, height: 174±8 cm, body mass: 75±13 kg. After control measurements, experimental measurements were conducted at pre and post loading as well as post recovery and next morning. A significantly higher absolute concentration (p<0.05) of serum luteinizing hormone (LH) was observed in AR than PR at next morning while no differences were observed in serum testosterone (T), cortisol (C) or sex hormone bin…

Beeta-alaniinin vaikutus 600 metrin juoksuaikaan

2016

Johdanto. Anaerobisessa maksimaalisessa suorituksessa (30 – 90 sekuntia) energia tuotetaan pääasiallisesti anaerobisen glykolyysin kautta, jonka haitallisina aineenvaihduntatuotteina syntyy laktaatti- ja vetyioneja. Näistä kahdesta vetyioni laskee veren pH-arvoa happamampaan suuntaan heikentäen lihassupistusta. Lihaksen ja veren happamuuden puskurointia voidaan parantaa muun muassa erilaisia lisäravinteita käyttämällä. Beeta-alaniinin on havaittu lisäävän solun sisäisen karnosiinin määrää. Karnosiini puskuroi solun sisällä happamuutta aiheuttavia vetyioneja lisäten anaerobista suorituskykyä. Tämän tutkimuksen tarkoituksena on selvittää onko lyhyellä beeta-alaniinin käyttöjaksolla vaikutusta…

Neuromuscular, hormonal and oxidative stress responses to endurance running exercises in well-trained runners

2007

The aim of this study was to investigate to which type of running exercises well trained endurance runners respond more favourably with regard to acute neuromuscular and endocrinological responses and exercise-induced oxidative stress. It was hypothesized that these responses depend on the type of running exercise and relate to the physical characteristics. Altogether nine different running exercises and a long walking exercise were performed by a total of 88 male athletes. An intermittent exercise consisting of progressive 20 s runs decreased vertical jump performance in middle distance runners (MID), but improved it in marathon runners (MAR). An 18 – 24 min exhaustive test run, a 40 min i…

Advancing the ecotoxicological relevancy of zebrafish : application of early-juvenile 20dpfZF to assess xenoestrogenicity of environmental chemicals …

2014

The effect of high-intensity interval exercise program on blood lipids and hormones in recreationally active adults

2015

Johdanto. Tyypin 2 diabetes sekä verenkieroelimistön sairaudet ovat yleistyneet ja niiden tehokkaimpana ehkäisynä pidetään liikuntaa. Suomessa ihmiset eivät noudata liikuntasuosi-tuksia ja syyksi inaktiivisuuteen sanotaankin olevan ajan ja motivaation puute. Korkeate-hoinen intervalliharjoittelu on ollut suosittua siksi, että se säästää aikaa ja sen vaikutuksien terveyteen ja kuntoon ajatellaan olevan vähintäänkin samanlaiset kun aerobisen harjoittelun. Tämän tutkimuksen tarkoituksena oli tutkia onko kahden erityyppisen intervalliharjoittelun (juoksu ja kuntopiiri) välillä eroja veren lipideissä ja hormoneissa, kun työmäärä ja intensiteetti pysyvät samana. Tällä hetkellä tutkimuksia tästä a…

Concurrent endurance and strength training : neuromuscular, cardiorespiratory and hormonal effects of the exercise order in previously untrained and …

2015

The aim of the present thesis was two-fold. First, to investigate physiological adaptations to concurrent endurance and strength training performed in the same session with different exercise orders (i.e. commencing training with endurance or strength, respectively; E+S vs. S+E) in previously untrained men (n=42) (study 1). Second, to examine physiological adaptations when strength training was always performed immediately after endurance running in the same session (E+S) compared to endurance training alone (E) in recreational endurance runners (n=30) (study 2). In study 1, training consisted of 2 - 3 weekly combined endurance cycling and mixed hypertrophic and maximal strength training se…

Associations of IGF-1 and Adrenal Androgens with Cognition in Childhood

2019

Background: Little is known about the association between adrenarche and cognition in general populations of children. We therefore studied the associations of dehydroepiandrosterone sulfate (DHEAS), androstenedione (A4), testosterone, insulin-like growth factor-1 (IGF-1), and adrenarche with cognition among prepubertal children. Methods: These cross-sectional analyses are based on baseline data of the Physical Activity and Nutrition in Children Study. A total of 387 children (183 girls, 204 boys) were included in the analyses. Raven’s Coloured Progressive Matrices (CPM) score was used to assess nonverbal reasoning. Serum adrenal androgens and IGF-1 concentrations were measured and clinical…

Mechanisms of honest sexual signalling and life history trade-offs in three cyprinid fishes

2005

Anssi Vainikka on väitöskirjassaan selvittänyt vaikuttavatko särjen ja suutarin ornamenttien tuottoon kytketyt hormonit niiden immuunipuolustuskykyyn. Vastoin ennakko-oletuksia, testosteronin tai estradiolin ei havaittu alentavan immuunipuolustuskykyä. Myöskään ornamenttien ja immuunipuolustuskyvyn mittareiden väliltä ei löytynyt seksuaalivalinnan teorioiden ennustamia positiivisia yhteyksiä. Korkea testosteronipitoisuus oli kuitenkin yhteydessä koirassuutarin hyvään kuntoon ja ornamentit kertovatkin koiraan hyvästä elinkyvystä. Testosterone is known to enhance reproductive success, but has also been proposed to suppress immune defence. Prior to spawning, male roach (Rutilus rutilus L.) pro…

Acute responses of comprehensive gonadosteroids and corticosteroids to resistance exercise before and after 10 weeks of supervised strength training

2020

Resistance training is a potent stimulus for muscle growth and steroid hormones are known to play a role in this adaptation. However, very little is known about the acute exercise‐induced gonadosteroid and corticosteroid hormone responses, including key smaller‐concentration intermediate hormones. The present study determined the acute responses of these steroid hormone families using quantitative UHPLC mass spectrometry (MS) following resistance exercise in strength‐trained men. Venous and fingertip blood was drawn pre‐, mid‐, 5 min post‐ and 15 min post‐resistance exercise, both before and after 10 weeks of supervised resistance training. The experimental resistance exercise sessions cons…

Effects of Water Immersion Methods on Postexercise Recovery of Physical and Mental Performance

2019

The aim of this study was to compare the effectiveness of 3 water immersion interventions performed after active recovery compared with active recovery only on physical and mental performance measures and physiological responses. The subjects were physically active men (age 20–35 years, mean ± SD 26 ± 3.7 years). All subjects performed a short-term exercise protocol, including maximal jumps and sprinting. Four different recovery methods (10 minutes) were used in random order: cold water immersion (CWI, 10° C), thermoneutral water immersion (TWI, 24° C), and contrast water therapy (CWT, alternately 10° C and 38° C). All these methods were performed after an active recovery (10-minute bicycle…