Some of us call it “afterburn”—the elevated calorie burning that lasts long after exercise is over. The scientific literature defines it as excess postexercise oxygen consumption, or EPOC (see Figure 1).
For the most part, EPOC represents the body restoring itself from physiological variables elevated by exercise. EPOC is an important physiological phenomenon for fitness professionals because it can play a contributing role in weight management.
Can New Research Prevent an Age-Old Paradigm?
Heart rate variability (HRV) is a reliable marker of physiological factors that directly affect the rhythms of the heart (Acharya et al. 2006). Acharya and colleagues explain that HRV reflects the heart’s ability to adapt to changing circumstances—stress, exercise and disease—by balancing the regulation of the autonomic nervous system, which controls bodily functions such as breathing, heart- beat and digestion.newsletter_teaser: Heart rate variability (HRV) is a reliable marker of physiological factors that directly affect the rhythms of the heart (Acharya et al. 2006). Acharya and colleagues explain that HRV reflflects the heart’s ability to adapt to changing circumstances—stress, exercise and disease.
newsletter_teaser: We usually talk of energy in general terms, as in “I don’t have a lot of energy today” or “You can feel the energy in the room.” But what really is energy? Where do we get the energy to move? How do we use it? How do we get more of it? Ultimately, what controls our movements?
Fat may seem like the enemy of civilized people—especially sedentary ones. Yet we cannot live without it.
Fat plays a key role in the structure and flexibility of cell membranes, and it helps regulate the movement of substances through those membranes. Special types of fat, known as eicosanoids, send hormone-like signals that exert intricate control over many bodily systems, mostly those affecting inflammation or immune function.
Researchers believe they may have honed in on a fountain of youth, and it could be all in our heads. According to a new study, people who “feel” younger live longer.
The researchers asked 6,489 individuals, aged 52 and older, a simple question: “How old do you feel you are?” Then they compared responses with actual ages, all-cause mortality rates and deaths from cancer and cardiovascular disease during a 99-month follow-up.
When a person loses weight, have you ever wondered where it goes? Scientists at the University of New South Wales in Australia have put together a calculation to explain the process. And it turns out most expert theories are wrong.
Seated desk work has come under fire these past several years as countless studies have linked it with a variety of health problems. But not all associations affect all people. When it comes to weight, a new study shows that the effects of regular sitting differ by gender and race.
A new study involving more than 11,000 people has added to the growing body of evidence that regular exercise can reduce depressive symptoms, suggesting it may even provide a preventive benefit. People who were active three times per week reduced the odds of being depressed by 16%, according to findings in JAMA Psychiatry (2014; doi: 10.1001/jamapsychiatry.2014.1240).
Highlighting the importance of the mind-body relationship, a new study has found that 7- to 9-year-old participants in an after-school fitness program improved their cognitive skills, enhancing their academic performance.