Search results for "hermosto"

Reliability and Sensitivity of Nocturnal Heart Rate and Heart-Rate Variability in Monitoring Individual Responses to Training Load

2022

Purpose: To assess the reliability of nocturnal heart rate (HR) and HR variability (HRV) and to analyze the sensitivity of these markers to maximal endurance exercise. Methods: Recreational runners recorded nocturnal HR and HRV on nights after 2 identical low-intensity training sessions (n = 15) and on nights before and after a 3000-m running test (n = 23). Average HR, the natural logarithm of the root mean square of successive differences (LnRMSSD), and the natural logarithm of the high-frequency power (LnHF) were analyzed from a full night (FULL), a 4-hour (4H) segment starting 30 minutes after going to sleep, and morning value (MOR) based on the endpoint of the linear fit through all 5-m…

A post-exercise infrared sauna session improves recovery of neuromuscular performance and muscle soreness after resistance exercise training

2023

The aim of this study was to investigate effects of a single infrared sauna (IRS) session on postexercise recovery of neuromuscular performance, autonomic nervous system function, subjective sleep quality, and muscle soreness. Male basketball players (n = 16) performed two trials consisting of a complex resistance exercise protocol (maximal strength with plyometrics), followed by either 20 min passive recovery (PAS) or IRS (temperature 43±5°C), in a randomized crossover design, with trials separated by one week. Recovery of neuromuscular performance was assessed using 20 m maximal sprint, maximal countermovement-jump (CMJ), and isometric leg press tests, performed 14 hours after exercise. H…

Sympathoadrenal response to resistance exercise in men, women and pubescent boys : with special reference to interaction with other hormones and neur…

2001

Neuromuscular and hormonal adaptations to resistance training : special effects of time of day of training

2009

The majority of the processes in human physiology and behaviour exhibit daily variation. Neuromuscular performance has been repeatedly shown to be lower in the morning hours compared to the rest of the day. However, the scientific data available provide somewhat conflicting results on the origin and mechanisms of diurnal variation in maximum strength and power. In addition, very limited scientific evidence exists as to whether this diurnal variation can be diminished by time-of-day-specific resistance training.The present study was designed to obtain more information on the mechanisms behind both diurnal variation in muscle strength and power, and the mechanisms behind adaptations to time-o…

Changes in nocturnal heart rate variability and endurance performance during a high-intensity or high-volume endurance training period in recreationa…

2014

It is known that endurance training affects the modulation of the autonomic nervous system and heart rate variability (HRV). As a method HRV may be a potential tool to monitor trainability and endurance training adaptation. The purpose of this study was to examine changes in nocturnal HRV indices and endurance running performance during high intensity versus high volume endurance training. In total, 28 recreational male and female endurance runners (35 ± 8 year, VO2max 50 ± 5 ml/kg/min) were matched into two training groups after the 8 week basic training period (BTP) according to HRV, endurance performance and training adaptation during BTP. During the 8 week hard training period (HTP), th…

Dog-Owner Relationship, Owner Interpretations and Dog Personality Are Connected with the Emotional Reactivity of Dogs

2022

Simple Summary The relationship between owner and the dog affects the dog's attachment behaviors and stress coping. In turn, the quality of the relationship may affect owner's interpretations about their dog's behavior. Here, we assessed dogs' emotional responses from heart rate variability and behavioral changes during five different situations. Dog owners evaluated the emotion (valence and arousal) of their dog after each situation. We found that both negative and positive incidents provoked signs of emotional arousal in dogs. Owners detected the dog's arousal especially during fear- and stress-evoking situations. The dog-owner relationship did not affect owners' interpretation of dogs' e…

Mitatun fyysisen kunnon sekä kehonkoostumuksen yhteys työperäiseen stressiin ylipainoisilla, liikuntaa harrastamattomilla henkilöillä

2013

TIIVISTELMÄ Mitatun fyysisen kunnon sekä kehonkoostumuksen yhteys työperäiseen stressiin ylipainoisilla, liikuntaa harrastamattomilla henkilöillä Maaria Mäkitervo Jyväskylän yliopisto Liikuntatieteellinen tiedekunta Terveystieteiden laitos Syksy 2013 53 sivua, 9 liitettä Työperäinen stressi on eräs työelämän keskeisimmistä haasteista ja sillä on mittavat vaikutukset terveydenhuollon kustannuksiin. Stressillä tiedetään olevan kiistaton vaikutus sydämen sykevaihteluun ja liikunnan on todettu laukaisevan stressiä ja parantavan sykevaihtelua. Näin voidaan tarkastella yksilön aerobisen kunnon vaikutusta sykevaihtelun kautta työperäisen stressin ilmentymiseen ja kokemiseen. Tämän pro gradu -tutki…

Individual adaptation to endurance training guided by heart rate variability

2015

Sykevaihtelu kuvastaa autonomisen hermoston toimintaa, minkä vuoksi sen on ajateltu kertovan luotettavasti urheilijan palautumistilasta. Viime vuosina onkin herännyt ajatus, voisiko sykevaihtelun avulla ohjelmoida kestävyysharjoittelua ja sitä kautta optimoida harjoitusvaste. Tämän tutkimuksen tavoitteena oli selvittää, johtaako sykevaihteluun perustuva harjoittelun ohjelmointi parempaan lopputulokseen kuin perinteinen, ennalta suunniteltu ohjelma. Menetelmät. Tutkimukseen valittiin 40 koehenkilöä, 20 naista (ikä 34.0 ± 7.8 v, VO2max 48.6 ± 4.3 ml/kg/min) ja 20 miestä (ikä 35.4 ± 6.6 v, VO2max 55.5 ± 5.3 ml/kg/min), lopulliseen analyysiin otettiin 31 henkilöä. Koehenkilöt harjoittelivat sam…

Post-exercise heart rate variability : a new approach to evaluation of exercise-induced physiological training load

2015

To improve maximal endurance performance, an optimal physiological training load, i.e. the balance between exercise and recovery, is required. In general, the goal of a single endurance exercise session is to transiently disturb body homeostasis after which a so-called supercompensation, an improvement in performance, can occur if the recovery period is adequate. The physical training load of a single exercise session consists of the combination of exercise intensity and duration. At the present time, there is no single tool to quantify the amount of disturbance of homeostasis that is equal to physiological training load of a single exercise session. Heart rate variability (HRV), the change…

Heart rate variability as a physiological indicator or mental toughness

2016

Mental toughness is gaining prominence in sport psychology since athletes themselves, coaches, members of the press, sports commentators and sports psychologists have cited mental toughness as one of the most important psychological characteristics in elite sports. Even so, an extensive review of the available literature leads to the conclusion that there is a lack of a precise and widely accepted definition of mental toughness, while its conceptualization remains challenging. Therefore, based on the existing literature concerning physiological toughness (Dienstbier, 1989), this study examines through an innovative psychophysiological perspective how mental toughness operates, and thus cont…