Emerging literature highlights the need to incorporate physical activity into every strategy intended to prevent weight gain as well as to maintain weight loss over time. Furthermore, physical activity should be part of any plan to lose weight. The stimulus of exercise provides valuable metabolic adaptations that improve energy and macronutrient balance regulation. A tight coupling between energy intake and energy expenditure has been documented at high levels of physical exercise, suggesting that exercise may improve appetite control. The regular practice of physical activity has also been reported to reduce the risk of stress-induced weight gain. A more personalized approach is recommended when planning exercise programs in a clinical weight loss setting in order to limit the compensatory changes associated to exercise-induced weight loss. With modern environment promoting overeating and sedentary behavior, there is an urgent need for a concerted action including legislative measures to promote healthy active living in order to curb the current epidemic of chronic diseases.
Continue Reading » Physical Activity Plays an Important Role in Body Weight Regulation
Over the last decade, investigators have paid increasing attention to the effects of resistance training (RT) on several metabolic syndrome variables. Evidence suggests that skeletal muscle is responsible for up to 40% of individuals' total body weight and may be influential in modifying metabolic risk factors via muscle mass development. Due to the metabolic consequences of reduced muscle mass, it is understood that normal aging and/or decreased physical activity may lead to a higher prevalence of metabolic disorders. The purpose of this review is to (1) evaluate the potential clinical effectiveness and biological mechanisms of RT in the treatment of obesity and (2) provide up-to-date evidence relating to the impact of RT in reducing major cardiovascular disease risk factors (including dyslipidaemia and type 2 diabetes). A further aim of this paper is to provide clinicians with recommendations for facilitating the use of RT as therapy in obesity and obesity-related metabolic disorders.
Continue Reading » Evidence for Resistance Training as an Obesity Treatment
A growing number of studies have identified chronic sleep restriction as a potential risk factor for obesity. This could have important implications for how obesity is prevented and managed, but current understanding of the processes linking chronic sleep restriction to obesity is incomplete. In this paper, we examined some of the pathways that could underlie the relationship between chronic sleep restriction and obesity. This involved exploring some of the potential environmental, health, behavioral, and sociodemographic determinants of chronic sleep restriction, which require further investigation in this context. Three pathways that could potentially link chronic sleep restriction to obesity were then examined: (1) altered neuroendocrine and metabolic function, (2) impaired glucose regulation, and (3) waking behavior. The selected pathways linking chronic sleep restriction to obesity reviewed in this paper are presented in a schematic representation; this may be used to guide future research in this area. This area of research is important because it may lead to more effective interventions and strategies to combat the present obesity epidemic.
Continue Reading » Pathways Linking Chronic Sleep Restriction to Obesity
In my previous post I presented the talk by Dr. Barry Schwartz regarding “The Paradox of Choice”. Also, I've lately been speaking about having specific goals in our training and making specific choices about the direction our training should take.
If you read my piece on the concept of fitness you’ll see that I don’t think much of the word. Yes, I use it on occasion for brevity or convenience but depending on your perspective it’s either to vague or too all-encompassing.
Continue Reading » Fitness: All Encompassing Means Paralyzing?
The prevalence of overweight and obesity has increased. A strong environmental factor contributing to the obesity epidemic is food portion size. This review of studies into the effects of portion size on energy intake shows that increased food portion sizes lead to increased energy intake levels. Important mechanisms explaining why larger portions are attractive and lead to higher intake levels are value for money and portion distortion. This review also shows that few intervention studies aiming to reverse the negative influence of portion size have been conducted thus far, and the ones that have been conducted show mixed effects. More intervention studies targeted at portion size are urgently needed. Opportunities for further interventions are identified and a framework for portion size interventions is proposed. Opportunities for intervention include those targeted at the individual as well as those targeted at the physical, economic, political and socio-cultural environment.
Continue Reading » Portion Size: Effect on Food Intake and Possible Interventions
More and more, everyone is learning that "diets" don't work. Sure, people drop weight on diets but they fail to make a lasting change. I don't need to go into this, you know all about yo-yo dieting. Despite this there are still plenty of judgmental folks (who probably wouldn't know a problem if it bit them in the tuchus) who will say stuff like, "jeez, what ever happened to old fashioned self-control?"
Continue Reading » Self Control: Not all its Cracked Up To Be
In my post, Instinctual Eating, Thin People, and Appetite, I discussed eating from the perspective of one life-long thin person.
My problem is not, therefore, keeping off fat but eating enough to maintain my strength and of course to continually get stronger. For a person like me that is not so easy to do and involves what seems like a lot of eating. Back when I was still suffering from the bodybuilding affliction it was even worse.
Continue Reading » Hunger is a Physical Feeling
By Eric Troy
Once in a post about Micheal Pollan's ideas about "nutritionism" and instinctual eating I made the following statement:
“…nutritionists would never tell you that simply eating by your “instincts” is a magical ticket to health.”
Continue Reading » Instinctual Eating, Thin People, and Appetite
I just came across a "nutrition quiz".
I got eight out of ten correct. Only eight? ME? You have got to be kidding me? I am a nutrition stud. Well, perhaps not exactly a nutrition stud but let's just say I do not get my nutrition information from steroid salesmen on bodybuilding forums.
One of the questions on the quiz involved brown rice. Go figure. I knew they wanted to hear that brown rice was healthier than white rice so that is what I answered but really I refuse to capitulate to the nonsense about brown rice being magical health pellets and white rice being evil little starch monsters.
Continue Reading » Nutrition is Not a True or False Proposition
The age old question. And it seems to spark absolute outrage on all sides. Which is "better" for fatloss? Diet alone, exercise alone, or a combination of diet and exercise intervention?
Most people involved with helping the very overweight or obese lose weight will tell you that if you have to choose one then diet alone is the way to go.
Continue Reading » Diet Alone, Exercise Alone, Or Both For Fatloss?