Search results for "Rate"

Heart rate variability -based recovery during sleep compared to movement analysis,subjective ratings and cortisol awakening responses

2006

Behavioral Inhibition Underlies the Link Between Interoceptive Sensitivity and Anxiety-Related Temperamental Traits

2017

Interoceptive sensitivity is a biologically determined, constitutional trait of an individual. High interoceptive sensitivity has been often associated with proneness to anxiety. This association has been explained by elevated autonomic responsiveness in anxious individuals. However, in a heartbeat discrimination task (discrimination of heartbeats’ simultaneity to an external stimulus) low cardiac responsiveness has accompanied enhanced performance. The relation between these factors seems task dependent, and cannot comprehensively explain the link between interoceptive sensitivity and anxiety. We explored for additional explanatory factors for this link. More specifically, we studied which…

Habitual physical activity and heart rate variability in 12-year old children

2012

ABSTRACT Wennman, Heini 2012. Habitual physical activity and heart rate variability in 12-year old children. Department of Biology of Physical Activity, University of Jyväskylä, 92p. The study of heart rate variability (HRV) provides useful information about the function of the cardiac autonomic nervous system. The effects of many environmental factors on HRV are well known, but the associations between physical activity (PA) and HRV, especially in children, are less investigated. Higher HRV is related to health and many pathologic conditions are associated with reduced HRV. Exercise causes HRV to diminish, but improves HRV in long term. PA promotes many health related changes in energy met…

Heart rate recovery after maximal and submaximal exercise

2012

Pasi Karjalainen (2012). Heart rate recovery after maximal and submaximal exercise. Department of Biology of Physical Activity, University of Jyväskylä, Master thesis in exercise physiology, 76 pages. Heart rate recovery (HRR) after exercise reflects autonomic control of the heart. Heart rate recovery (HRR) has shown to have prognostic value among asymptomatic populations and patients with diseases. In addition, changes in HRR may reflect the effects of training load. The role of parasympathetic reactivation in decrease of heart rate (HR) is known to be strong immediately after the cessation of exercise. It is also shown that HRR is affected by the activity of the sympathetic system that is…

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…

Effects of eight weeks physical training on physical performance and heart rate variability in children

2013

Kraama, Liisa. 2013. Kahdeksan viikon fyysisen harjoittelun vaikutus lasten fyysiseen suorituskykyyn ja sydämen sykevaihteluun. Jyväskylän yliopisto, Liikuntabiologian laitos. Liikuntafysiologian Pro gradu –tutkielma. 52 s. Lasten ja kasvuikäisten nuorten fyysinen aktiivisuus ja aerobinen kapasiteetti ovat vähentyneet viimeisten vuosikymmenten aikana. Fyysisesti aktiivisilla aikuisilla on todettu olevan enemmän sydämen sykevaihtelua kuin vähemmän aktiivisilla. Aikuisilla on harjoittelun aikaansaamien fyysisen suorituskyvyn muutosten todettu olevan yhteydessä sykevaihtelun, erityisesti parasympaattista aktiivisuutta kuvaavaan korkean taajuuden sykevaihtelun, kasvuun. Tässä pro gradu -tutkiel…

Lavatanssiko liikuntaa? : lavatanssi-illan fyysinen aktiivisuus ja kuormittavuus sekä niihin yhteydessä olevat tekijät

2012

Lavatanssi on kasvattanut suosiotaan viime vuosikymmeninä. Terveys- ja kuntoliikuntamuotona sitä on tutkittu varsin vähän. Tutkimuksen tarkoituksena oli selvittää lavatanssin fyysistä aktiivisuutta ja kuormittavuutta sekä niihin yhteydessä olevia tekijöitä. Yhden tanssi-illan aikana tammikuussa 2011 tanssijoiden fyysistä kuormittavuutta mitattiin sykemittareilla ja fyysistä aktiivisuutta selvitettiin askelmittareilla. Taustatietoja kerättiin sähköisellä kyselylomakkeella. Tutkimukseen osallistui 58 vapaaehtoisesti ilmoittautunutta tanssinharrastajaa. Kolmen tunnin lavatanssi-illan aikana tutkittavien keskisyke oli 116 ± 16 bpm, korkein syke 160 ± 15 bpm, ja energiankulutus miehillä 2043 ± 5…

Physical performance of Finnish futsal players, analysis of game intensity and fatigue in official futsal games

2017

Introduction. Futsal has grown notably in last years and have over 12 million players worldwide. Futsal is a high-intensity indoor sport where burst of multi-planar movements varies with short periods of rest. Futsal is played on a court sized 40 x 20 m for two halves of 20 min, where clock is stopped when ball is out of play. Purpose of this study was to find out physical performance of Finnish futsal players and analyse intensity and fatigue in official futsal games. Methods. Two Finnish Futsal League teams were involved (n = 19), age 26.3 (± 3.0 years), body mass 76.4 (± 6.2 kg), height 178.7 (± 5.7 cm), BMI 23.9 (± 1.4 kg/m2) and body fat % 12.3 (± 4.0 %). Measurement were done in the m…

Physiological and autonomic stress responses after prolonged sleep restriction and subsequent recovery sleep in healthy young men

2018

Purpose Sleep restriction is increasingly common and associated with the development of health problems. We investigated how the neuroendocrine stress systems respond to prolonged sleep restriction and subsequent recovery sleep in healthy young men. Methods After two baseline (BL) nights of 8 h time in bed (TIB), TIB was restricted to 4 h per night for five nights (sleep restriction, SR, n = 15), followed by three recovery nights (REC) of 8 h TIB, representing a busy workweek and a recovery weekend. The control group (n = 8) had 8 h TIB throughout the experiment. A variety of autonomic cardiovascular parameters, together with salivary neuropeptide Y (NPY) and cortisol levels, were assessed.…

Effects of eight weeks of physical training on physical performance and heart rate variability in children

2017

Study aim: Physically active adults have been shown to have higher heart rate variability (HRV) than less active adults, but less is known about children in this regard. In adults, training-induced changes in physical performance have been shown to be related to increase in HRV, especially in its high frequency component (HF), which is a marker of parasympathetic activity. The purpose of this study was to examine whether 8 weeks of instructed physical training would improve physical performance and cardiac autonomic function (HRV) in secondary school pupils and to examine the relationship between changes in physical performance and the function of the autonomic nervous system. Material and …