What Is the Glycemic Index?
The glycemic index is a numerical ranking system used to measure the rate of digestion and absorption of foods and their resultant effect on blood glucose. A food that ranks high on the GI produces a large, momentary spike in glucose after the food is consumed. By contrast, a food with a low GI causes a slower, sustained rise in blood glucose.
Hall, K.D., et al. 2012. Energy balance and its components: Implications for body weight regulation. American Journal of Clinical Nutrition, 95 (4), 989–94. Energy balance represents the complex interplay between the fuel we consume and the energy we exert, which makes this balance integral to the process of losing weight.
Accurate data are needed to determine which corrective strategies a client needs. A trained, experienced corrective exercise specialist will also be able to pinpoint movement errors. Repetition and coaching will sharpen assessment skills.
When it comes to exercise program design, educated fitness professionals know that rest, recovery and regeneration are just as important as training intensity and consistency. Clients get better results and reach their goals more quickly when they learn how to take care of their bodies in a smart, sound manner. Nutrition is also a key component of a complete wellness program. Nutrient timing in particular has been the subject of much discussion and research, especially over the past decade.
When it comes to running—both shod and barefoot—debate abounds as to which foot strike is best, with many favoring a forefoot strike (FFS) or midfoot strike (MFS) over a rear-foot strike (RFS) for efficiency and injury prevention. But is there really an optimal way to run?
If you were asked to visualize a model of longevity, would you picture someone overweight? Probably not. However, new research suggests that people who carry extra pounds could have a lower all-cause mortality risk than normal-weight people.
Think of a recent time you felt stressed. Maybe it was during an argument with your spouse, or a meltdown with your kids. Maybe you were stuck in traffic and late for an important meeting. Or maybe you were lying in bed, worrying about work. Whatever the cause of your stress, your body and brain were almost certainly experiencing the same thing: boiling blood pressure, a churning stomach, tight muscles and a racing mind.