Search results for "energiansaanti"
showing 10 items of 11 documents
Mitochondrial bioenergetic pathways in blood leukocyte transcriptome decrease after intensive weight loss but are rescued following weight regain in …
2021
Prolonged periods of energy deficit leading to weight loss induce metabolic adaptations resulting in reduced energy expenditure, but the mechanisms for energy conservation are incompletely understood. We examined 42 healthy athletic females (age 27.5 +/- 4.0 years, body mass index 23.4 +/- 1.7 kg/m(2)) who volunteered into either a group dieting for physique competition (n = 25) or a control group (n = 17). The diet group substantially reduced their energy intake and moderately increased exercise levels to induce loss of fat mass that was regained during a voluntary weight regain period. The control group maintained their typical lifestyle habits and body mass as instructed. From the diet g…
Molecular Pathways Mediating Immunosuppression in Response to Prolonged Intensive Physical Training, Low-Energy Availability, and Intensive Weight Lo…
2019
Exercise and exercise-induced weight loss have a beneficial effect on overall health, including positive effects on molecular pathways associated with immune function, especially in overweight individuals. The main aim of our study was to assess how energy deprivation (i.e., "semi-starvation") leading to substantial fat mass loss affects the immune system and immunosuppression in previously normal weight individuals. Thus, to address this hypothesis, we applied a high-throughput systems biology approach to better characterize potential key pathways associated with immune system modulation during intensive weight loss and subsequent weight regain. We examined 42 healthy female physique athle…
Effects of Easy-to-Use Protein-Rich Energy Bar on Energy Balance, Physical Activity and Performance during 8 Days of Sustained Physical Exertion
2012
Background Previous military studies have shown an energy deficit during a strenuous field training course (TC). This study aimed to determine the effects of energy bar supplementation on energy balance, physical activity (PA), physical performance and well-being and to evaluate ad libitum fluid intake during wintertime 8-day strenuous TC. Methods Twenty-six men (age 20±1 yr.) were randomly divided into two groups: The control group (n = 12) had traditional field rations and the experimental (Ebar) group (n = 14) field rations plus energy bars of 4.1 MJ•day−1. Energy (EI) and water intake was recorded. Fat-free mass and water loss were measured with deuterium dilution and elimination, respe…
Low Energy Availability is Difficult to Assess But Outcomes Have Large Impact on Bone Injury Rates in Elite Distance Athletes
2018
We aimed to (a) report energy availability (EA), metabolic/reproductive function, bone mineral density, and injury/illness rates in national/world-class female and male distance athletes and (b) investigate the robustness of various diagnostic criteria from the Female Athlete Triad (Triad), Low Energy Availability in Females Questionnaire, and relative energy deficiency in sport (RED-S) tools to identify risks associated with low EA. Athletes were distinguished according to benchmarks of reproductive function (amenorrheic [n = 13] vs. eumenorrheic [n = 22], low [lowest quartile of reference range; n = 10] versus normal testosterone [n = 14]), and EA calculated from 7-day food and training d…
Kestävyys- ja teholajien urheilijoiden ravintoaineiden saanti harjoittelukaudella verrattuna ravitsemussuosituksiin
2014
Urheilijoiden ravintoaineiden tarpeet ovat hieman erilaiset kuin normaaliväestön, ja ravitsemuksella on suuri merkitys urheilijan sekä kehittymisessä että palautumisessa. Oikean ravinnon avulla mahdollistetaan suorituskyvyn parantuminen eri lajeissa ottaen huomioon lajikohtaiset suositukset. Tässä tutkimuksessa oli tarkoitus selvittää saavuttavatko urheilijat ohjeelliset ravitsemussuositukset makroravintoaineiden, vitamiinien ja kivennäisaineiden osalta. Menetelmät. Tutkimukseen osallistui 18 urheilijaa, joista 10 oli kestävyys- ja kahdeksan teholajien urheilijoita (ikä 19 - 35 vuotta). Heidän ravintotottumuksiaan selvitettiin viiden vuorokauden ruokapäiväkirjaseurannan avulla harjoitteluka…
Evidence for protein leverage in a general population sample of children and adolescents
2023
Background/ObjectivesThe strong regulation of protein intake can lead to overconsumption of total energy on diets with a low proportion of energy from protein, a process referred to as protein leverage. The protein leverage hypothesis posits that protein leverage explains variation in energy intake and potentially obesity in ecological settings. Here, we tested for protein leverage and the protein leverage hypothesis in children and adolescents.Subjects/MethodsA population sample of children, mean (SD) age 7.6 (0.4) years (n = 422), followed up at age 9.8 (0.4) years (n = 387) and at age 15.8 (0.4) years (n = 229), participating for the Physical Activity and Nutrition in Children (PANIC) st…
Maajoukkuetason kestävyysurheilijoiden ravintoanalyysi yleisurheilussa
2003
Optimaalisella ruokavaliolla voidaan vaikuttaa urheilijan suorituskykyyn sekä suorituksesta palautumiseen.Riittävän kokonaisenergiansaannin lisäksi on varmistettava riittävä hiilihydraattien, proteiiniensekä mikroravintoaineiden saanti. Lisäenergiantarpeen täyttämisen tulisi tapahtua etupäässähiilihydraattipitoisia ruoka-aineita nauttimalla. (American College of Sports Medicine ym., 2000;Hawley ym., 1995.) Tämän tutkimuksen tarkoituksena on selvittää yleisurheilun maajoukkuetasonkestävyysurheilijoiden ravintotottumuksia ruokapäiväkirjan avulla sekä päivittäisen kokonaisenergianja ravintoaineiden saannin suhdetta arvioituun energiankulutukseen sekä harjoittelu- ja suorituskykymuuttujiinviide…
Energiansaanti ja ravitsemukselliset erityispiirteet eri urheilulajeissa ja kuntoilussa
2013
Ravitsemuksella on suuri rooli ihmisen kokonaisvaltaisessa hyvinvoinnissa. Urheilijoille ruokavalio on jaksamisen, palautumisen, kehittymisen ja suorituskyvyn kannalta tärkeää. Eri urheilulajeissa on erilaisia vaatimuksia ravintoaineiden määrän ja niiden jakautumisen suhteen. Tämän tutkimuksen tarkoituksena oli selvittää eri urheilulajien edustajien ja kuntoilijoiden ravinnon saantia sekä vertailla niitä keskenään. Menetelmät. Koehenkilöinä oli 29 urheilijaa (hiihtäjät, teholajien urheilijat ja uimarit) ja 32 kuntoilijaa (ikä 17–37), joiden ravitsemustottumuksia selvitettiin ruokapäiväkirjojen avulla. Ruokapäiväkirjat analysoitiin Nutriflow-, Nutrica- ja AivoDiet -ohjelmilla. Saatuja tuloks…
Aerobic fitness, energy balance and BMI are associated with training load assessed by activity energy expenditure
2009
The present study examined whether activity energy expenditure related to body mass (AEE/kg) is associated with maximal aerobic fitness (VO2max), energy balance, and body mass index (BMI) during the 2 hardest weeks of the military basic training season (BT). An additional purpose was to study the accuracy of the pre-filled food diary energy intake. Energy expenditure (EE) with doubly labeled water, energy intake (EI), energy balance, and mis-recording was measured from 24 male conscripts with varying VO2max. AEE/kg was calculated as (EE × 0.9−measured basal metabolic rate)/body mass. The reported EI was lower (P<0.001) than EE (15.48 MJ/day) and mis-recording of the pre-filled diary was −20…
Influence of Menstrual Cycle or Hormonal Contraceptive Phase on Energy Intake and Metabolic Hormones—A Pilot Study
2021
Sex hormones are suggested to influence energy intake (EI) and metabolic hormones. This study investigated the influence of menstrual cycle (MC) and hormonal contraceptive (HC) cycle phases on EI, energy availability (EA), and metabolic hormones in recreational athletes (eumenorrheic, NHC = 15 and monophasic HC-users, CHC = 9). In addition, 72-h dietary and training logs were collected in addition to blood samples, which were analyzed for 17β-estradiol (E2), progesterone (P4), leptin, total ghrelin, insulin, and tri-iodothyronine (T3). Measurements were completed at four time-points (phases): Bleeding, mid-follicular (FP)/active 1, ovulation (OVU)/active 2, mid-luteal (LP)/inactive in NHC/C…