“Give me abdominal exercises to lose fat around my stomach! Can I do triceps exercises to get rid of my granny arms? These are statements or questions I have heard more times than I can count. It is a question steeped in marketing, wishful thinking and a desire for that society driven “six-pack” and or “buns of steel.” The “spot reduction” theory is based around the act of selectively reducing fatty deposits in targeted areas by exercising the specific area. It seems logical to an extent. If a client works a muscle, then the fat around the area is used to produce the energy needed for the movement.
Unfortunately this is not the way it works!
If only it was that simple!!
Let’s briefly look at why we burn fat from the whole body:
When we need to complete a movement… say climbing a set of stairs
— We use glucose (carbohydrate) as our first pick to create/fuel a muscular contraction/movement.
— This glucose is either floating in blood stream or the liver (which stores glucose) gradually releases it into the blood stream.
— Once the glucose runs out, we tap into our fat source by way of a signal from the brain. This results in a release of triglycerides.
— This literally breaks up the fat cell (triglyceride) into a fatty acid and a glycerol molecule. The fatty acid the travels through the circulatory system, to the heart, liver and /or lungs (if blood has time to be oxygenated).
— From there it heads to the working muscles where it goes through a process to release the energy to make movement
— No matter which muscle needs the fuel, the molecules (fats, carbohydrates or proteins) travel around the circulatory system.
So all in all, it is not as easy as grabbing a fat cell from the specific muscle and using it’s energy. It is essentially easier and more efficient to steal those fatty acids from everywhere. Sorry guys!
There is research to back up this idea.
In 1984, a study found that a sit-up program does not preferentially reduce fat cell size or fat thickness in the abdominal region in comparison to other body sites. In 2007, another study determined that an upper-body program resulted in a generalized loss of fat mass rather than specifically the upper-body. Finally in 2013, it was found that training a single leg was effective in reducing fat mass but not specifically in the trained limb. This was determined using a whole body DEXA scan, which is the current gold standard for determining fat mass.
So what helps reduce waist circumference (fat mass)?
From that exact research gives us a clue. Each of those studies looked at a different body part (arms, abdominals and legs) and all had an effect on the bodies fat mass. So, if we completed a whole-body strength program we would see an effect over the whole body. Whilst getting stronger overall in the process.
It is a win-win!
Furthermore, from an energy balance perspective, completing exercises incorporating large muscle groups in big compound exercises creates greater energy deficit. These are exercises such as the squat, deadlift, bench press and rows. Why?
The more muscles used in one movement, the more fuel (fat/glucose) it needs. Just doing a sit-up, which works abdominals, look at a squat which can use legs, glutes, abdominals etc. You will also produce less fatigue and therefore complete more exercises by looking at a whole body approach. So rather than looking at 1-2 abdominal exercises to lose weight, try variety. We encourage clients to complete aerobic exercise, some resistance training and any incidental activity your heart desires. Plus think about the quality and quantity of food and drink you consume (but that is a whole other story).
Most importantly, stop getting fooled by those marketing departments. Also throw out that ab-cruncher that is collecting dust under your bed! Please!!