Search results for "SYK"
showing 10 items of 1600 documents
Improving Energy Expenditure Estimation in Wrist-Worn Wearables by Augmenting Heart Rate Data With Heat Flux Measurement
2021
Wearable electronics are often used for estimating the energy expenditure of the user based on heart rate measurement. While heart rate is a good predictor of calorie consumption at high intensities, it is less precise at low intensity levels, which translates into inaccurate results when estimating daily net energy expenditure. In this study, heart rate measurement was augmented with heat flux (HF) measurement, a form of direct calorimetry. A physical exercise test on a group of 15 people showed that HF measurement can improve the accuracy of calorie consumption estimates especially during rest and low-intensity activity when used in conjunction with heart rate information and vital backgr…
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…
Assessment of aerobic and anaerobic thresholds in five different technique specific incremental treadmill tests in cross country skiers
2016
The use of incremental tests to exhaustion is widely accepted in the field of exercise physiology in the assessment of athletes. These tests which can measure a number of physiological parameters can help coaches and athletes optimize training. Blood lactate concentrations (bLa) corresponding to heart rate (HR) provides insight on the athlete’s aerobic threshold (AerT) and anaerobic threshold (AnT). Cross country skiing is a sport where the selection of technique may influence the HR at which AerT and AnT occurs, eliciting higher bLa corresponding to lower HR depending on technique. Because of this, laboratory testing is crucial to provide coaches and athletes with the necessary information…
Lavatanssi-illan fyysinen aktiivisuus ja siihen yhteydessä olevat tekijät
2012
Kuuttila, Kirsi 2012. Lavatanssiko liikuntaa? Lavatanssi-illan fyysinen aktiivisuus ja siihen yhteydessä olevat tekijät. Liikuntapedagogiikan Pro gradu -tutkielma. Liikuntatieteiden laitos, Jyväskylän yliopisto, 91. Tämän tutkimuksen tarkoituksena oli selvittää lavatanssin fyysistä aktiivisuutta ja siihen yhteydessä olevia tekijöitä. Tutkimukseen osallistui 58 henkilöä, joista puolet oli naisia ja puolet miehiä. Tutkimukseen ilmoittautuneet vapaaehtoiset, 35–55-vuotiaat henkilöt kerättiin Suomen Media & Action - ja Tanssikoulu Happy Dancen sähköpostilistojen kautta. Fyysistä aktiivisuutta mitattiin tutkimuksessa syke- ja askelmittarien avulla. Mittaukset toteutettiin tanssipaikka V2:lla Har…
Association between resting blood pressure and maximal blood pressure response to exercise and arterial health
2022
We investigated the longitudinal associations of blood pressure, cardiorespiratory fitness, and arterial stiffness among children. Arterial stiffening has been repeatedly shown to be a cardiovascular mortality predictor and can be observed early in childhood. As such, it is crucial to understand whether a child’s blood pressure, fitness level, and body composition can predict early signs of atherosclerosis and arterial stiffening. The current study examined the relationship between blood pressure, cardiorespiratory fitness, and arterial stiffness over time in children, using data from the Physical and Nutrition in Children (PANIC) Study. It is a physical and dietary intervention study condu…
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…