Conventional spectral analyses of heart rate variability (HRV) have been limited to stationary signals and have not allowed the obtainment of information during transient autonomic cardiac responses. In the present study, we evaluated the ability of the short-time Fourier transform (STFT) method to detect transient changes in vagal effects on the heart. We derived high frequency power (HFP, 0.2...

Smoking is a major risk factor of several types of cancer and cardiovascular disease (1). According to WHO report, every year, approximately 6 million people worldwide die of heart diseases, lung cancer, or other diseases associated with tobacco smoking. If this trend continues, 8 million people are estimated to die every year by 2030 (2). From this perspective, smoking is obviously a serious h...

INTRODUCTION Sedentariness is associated with chronic health conditions, impaired cognitive function and obesity. Work contributes significantly to sedentariness because many work tasks necessitate sitting. Few sustained solutions exist to reverse workplace sedentariness. Here, we evaluated a chair and an under-table device that were designed to promote fidgeting while seated. Our hypothesis wa...

The primary aims of this study were to evaluate the effects of the nitric oxide (NO) synthase inhibitor N(G)-nitro-l-arginine methyl ester (l-NAME) on gastric emptying (GE) of, and the blood pressure (BP), glycemic, insulin, and incretin responses to, oral glucose in older subjects. Eight healthy subjects (4 males and 4 females, aged 70.9 +/- 1.3 yr) were studied on two separate days, in double...

Previous approaches to the measurements of pulmonary diffusing capacity (DL) and pulmonary capillary blood flow (QC) utilized either the rebreathing or the single inhalation technique in conjunction with radioisotope gas and mass spectrometry. In the present study, we utilized a newly developed rapid infrared analyzer in conjunction with the slow single exhalation technique on 100 healthy volun...

Introduction: Heart rate is a fairly good indicator of health-related physical fitness and often used by yoga trainers before, during, after their training sessions. “Divyang Jana”, term to refer persons with disabilities (PwD) are equally sometimes more prone having elevated heart rates because external internal conditions beyond control. This study was undertaken evaluate the role NADA Yoga M...

Heart rate variability (HRV) is the present oscillation of the heart rate. The interest in HRV as a parameter of the parasympathetic and sympathetic influence of the autonomic nervous system on the heart has increased in the last few decades (Kaikkonen et al., 2007). It is known that its influence changes under different conditions such as rest, exercise or mental stress and different body post...

For ergonomic purposes it is useful to quantify the energy expenditure and the level of physical activity imposed on workers. Oxygen consumption (VO₂) is often used to calculate energy expenditure and can be used as an indication of physical activity. Twenty-five subjects participated in the study. Oxygen consumption (VO₂) in L O₂/min and heart-rate (HR) in beats per minute (bpm) were simultane...