Using the Hilbert Transform to Evaluate the Effects of Functional Foods on Autonomic Nervous System Activity: A Comparison with the Fast Fourier Transform.

Evaluating the autonomic nervous system (ANS) via heart rate variability (HRV) to investigate the effects of food on human health has attracted attention. However, using a conventional HRV analysis via the fast Fourier transform (FFT), it is difficult to remove artifacts such as body movements and/or abnormal physiological responses (unexpected events) from the HRV analysis results. In this study, an analysis combining bandpass filters and the Hilbert transform was applied to HRV data on functional food intake to compare with FFT analysis.

Association of social support with gratitude and sense of coherence in Japanese young women: a cross-sectional study.

Purpose: Recent studies have shown that perceived social support is associated with gratitude and sense of coherence, but evidence for this concept remains scarce. In the present study, we investigated relationships between social support, gratitude, and sense of coherence, focusing on the construct of and source of social support among young women.

Methods: The study was conducted in 2014 in Japan.

Cardiovascular response to short-term fasting in menstrual phases in young women: an observational study.

Background: Menstrual cycle-related symptoms are an important health issue for many women, and some may affect cardiac autonomic regulation. In the present study, we evaluated the cardiovascular and physiological stress response to 12-h short-term fasting in the menstrual phases of healthy young women.

Methods: We performed a randomized crossover study.

Eating behavior and perception of body shape in Japanese university students.

Purpose: We investigated the relationship between eating behavior measured by the Dutch Eating Behaviour Questionnaire (DEBQ) and perception of body shape, examining the current physical status and 'ideal' physical parameters in females and males.

Methods: The participants, 548 Japanese university students (age 19.2 ± 0.

[Association between normal weight obesity and diet behaviors in female students].

Objectives: The association between normal weight obesity and diet behavior and physical activity in female students was investigated in this study.

Methods: The subjects were 530 female students aged 18-21 years from 6 universities in the Kyoto Prefecture, Japan. From January to July, 2010, the body fat and walk counts of these students were measured, and they answered a questionnaire.

Combined influence of media use on subjective health in elementary school children in Japan: a population-based study.

Background: In recent years in Japan, electronic games, home computers, and the internet have assumed an important place in people's lives, even for elementary school children. Subjective health complaints have also become a problem among children. In the present study, we investigated the relationship between media use and health status in elementary school children in Japan.

Effects of modern eating patterns on the cardiac autonomic nervous system in young Japanese males.

The aim of this study was to determine the effects of the single intake of a high-energy and high-fat meal, of that of a moderate-energy and high-carbohydrate meal, and of fasting, which are major global eating patterns involving the combination of various levels of energy and nutrients, on heart rate variability in healthy young males. Participants were assigned to three groups: the high-energy and high-fat meal group, the moderate-energy and high-carbohydrate meal group, and the fasting group (no meal) in a randomized crossover design. The R-R intervals were continuously recorded before and after meals.

Effects of vegetable containing gamma-aminobutyric acid on the cardiac autonomic nervous system in healthy young people.

The aim of this study was to investigate the effects of vegetable tablets containing Gamma-Aminobutyric Acid (GABA) intake on cardiovascular response and the autonomic nervous system in young adults. In a double-blind, randomized controlled trial, 7 healthy subjects were assigned to take vegetable tablets (10 g/trial) or control tablets (10 g/trial). We measured heart rate (HR), systolic and diastolic blood pressure, stroke volume, cardiac output, total peripheral resistance index, and the low- and high-frequency oscillatory components of heart rate variability (HRV).

Heart rate and electroencephalogram changes caused by finger acupressure on planta pedis.

Preliminary experiments were carried out to investigate the feasibility of using an electroencephalogram and heart rates to evaluate the efficacy of finger acupressure on the key points of planta pedis (both soles). Continuous electroencephalograms were recorded from 19 electrodes based on the International 10-20 electrode placement system on 22 university students (21+/-2.3 years).