The term “adrenaline” is commonly used to refer to the body’s excitatory catecholamines, Epinephrine (E) and Norepinephrine (NE), which are regulators of lipolysis (fat breakdown). NE and E acts on receptors called adrenergic receptors of which there are alpha (1 & 2) and beta (1, 2, & 3) subtypes. Activation of the alpha1 and beta-receptors is lipolytic (causes fat breakdown) while activation of the alpha2 receptor is anti-lipolytic (blunts fat breakdown). Stubborn fat areas have a high density of alpha2 receptors, making it harder for fat breakdown to occur in that area. If you are a women this means you have a large amount of alpha2 receptors in your thighs and glutes.
For the first couple weeks, we'll use relatively lighter loads. We'll progress to using heavier loads as we move forward, but for now, don't push yourself beyond where you feel safe. Once you feel comfortable doing the movements and understand how they should feel, then you can start adding a more weight. Take full advantage of our exercise database by clicking on each exercise below for detailed instructions!
I appreciate such a thorough synthesis on this topic. As a systematic reviewer, my main concern would be a lack of systematic assessment of risk of bias in the individual studies. I see you did a funnel plot to see any bias by study size, but there are so many other things involved in study quality (study design, selection of participants, statistical adjustment for potential con founders, etc). I would be interested to see how many of these studies were fair or better quality (there are several well accepted quality rating tools available for various study designs). I would also be interested to see a sensitivity analysis to see if the pooled results differ when high risk of bias studies are eliminated, for example. Thanks for an interesting read.