Toward a useful physical education

We have widespread ill health. And in the US 42% of us have become obese. PE didn’t help most people.

Entertainment, porn, and sports show us buff physiques to consume. We prominently reward athletes. And advertising sells us convenient food.

We train people to external direction. Our received ideals of fitness come from military preparedness. And we measure and praise performance. Why?

Ill health increases. And the fitness industry grows. This is not working. This fitness does not help most people.

We are going to spend too much time sitting. We are going to look at screens a lot. How do we teach ways of moving as lifelong harm reduction?

Hope

We must teach hope because without it everything else we can teach won’t get used.

Continue reading Toward a useful physical education

Incident Major Depressive Disorder Predicted by Three Measures of Insulin Resistance: A Dutch Cohort Study | American Journal of Psychiatry

Objective: Major depressive disorder is the leading cause of disability worldwide. Yet, there remain significant challenges in predicting new cases of major depression and devising strategies to prevent the disorder. An important first step in this process is identifying risk factors for the incidence of major depression. There is accumulating biological evidence linking insulin resistance, another highly prevalent condition, and depressive disorders. The objectives of this study were to examine whether three surrogate measures of insulin resistance (high triglyceride-HDL [high-density lipoprotein] ratio; prediabetes, as indicated by fasting plasma glucose level; and high central adiposity, as measured by waist circumference) at the time of study enrollment were associated with an increased rate of incident major depressive disorder over a 9-year follow-up period and to assess whether the new onset of these surrogate measures during the first 2 years after study enrollment was predictive of incident major depressive disorder during the subsequent follow-up period. Methods: The Netherlands Study of Depression and Anxiety (NESDA) is a multisite longitudinal study of the course and consequences of depressive and anxiety disorders in adults. The study population comprised 601 NESDA participants (18–65 years old) without a lifetime history of depression or anxiety disorders. The study’s outcome was incident major depressive disorder, defined using DSM-IV criteria. Exposure measures included triglyceride-HDL ratio, fasting plasma glucose level, and waist circumference. Results: Fourteen percent of the sample developed major depressive disorder during follow-up. Cox proportional hazards models indicated that higher triglyceride-HDL ratio was positively associated with an increased risk for incident major depression (hazard ratio=1.89, 95% CI=1.15, 3.11), as were higher fasting plasma glucose levels (hazard ratio=1.37, 95% CI=1.05, 1.77) and higher waist circumference (hazard ratio=1.11 95% CI=1.01, 1.21). The development of prediabetes in the 2-year period after study enrollment was positively associated with incident major depressive disorder (hazard ratio=2.66, 95% CI=1.13, 6.27). The development of high triglyceride-HDL ratio and high central adiposity (cut-point ≥100 cm) in the same period was not associated with incident major depression. Conclusions: Three surrogate measures of insulin resistance positively predicted incident major depressive disorder in a 9-year follow-up period among adults with no history of depression or anxiety disorder. In addition, the development of prediabetes between enrollment and the 2-year study visit was positively associated with incident major depressive disorder. These findings may have utility for evaluating the risk for the development of major depression among patients with insulin resistance or metabolic pathology.

Source: Incident Major Depressive Disorder Predicted by Three Measures of Insulin Resistance: A Dutch Cohort Study | American Journal of Psychiatry

DNA methylation‐based biomarkers of aging were slowed down in a two‐year diet and physical activity intervention trial: the DAMA study – Fiorito – – Aging Cell – Wiley Online Library

DAMA study is intentionally based on non-extreme interventions, meaning that relatively easily achievable changes in one’s lifestyle behaviors lead to a significant slowing down of biological aging biomarkers, which in turn are associated with higher longevity, lower risk of developing age-related diseases, and increased quality of life in the older age. Further, our results indicate that dietary quality and physical activity influence epigenetic aging through complementary molecular mechanisms, suggesting that their effect is potentially cumulative rather than interchangeable.

Source: DNA methylation‐based biomarkers of aging were slowed down in a two‐year diet and physical activity intervention trial: the DAMA study – Fiorito – – Aging Cell – Wiley Online Library

The Mediterranean diet helps improve cognitive function and memory – Idibell

Source: The Mediterranean diet helps improve cognitive function and memory – Idibell

Longitudinal Trends in Body Mass Index Before and During the COVID-19 Pandemic Among Persons Aged 2–19 Years — United States, 2018–2020

This report describes BMI increases among children aged 2–19 years during the COVID-19 pandemic.

the rate of body mass index (BMI) increase approximately doubled

Source: Longitudinal Trends in Body Mass Index Before and During the COVID-19 Pandemic Among Persons Aged 2–19 Years — United States, 2018–2020 | MMWR

Weight Loss with a Low-Carbohydrate, Mediterranean, or Low-Fat Diet | NEJM

Original Article from The New England Journal of Medicine — Weight Loss with a Low-Carbohydrate, Mediterranean, or Low-Fat Diet

Source: Weight Loss with a Low-Carbohydrate, Mediterranean, or Low-Fat Diet | NEJM

Assessing Causality in the Association between Child Adiposity and Physical Activity Levels: A Mendelian Randomization Analysis

This study does suggest that trying to persuade obese children to lose weight by exercising more is likely to be ineffective….

Source: Assessing Causality in the Association between Child Adiposity and Physical Activity Levels: A Mendelian Randomization Analysis

Fatness predicts decreased physical activity and increased sedentary time, but not vice versa: support from a longitudinal study in 8- to 11-year-old children | International Journal of Obesity

Our results suggest that adiposity is a better predictor of PA and sedentary behavior changes than the other way around.

Source: Fatness predicts decreased physical activity and increased sedentary time, but not vice versa: support from a longitudinal study in 8- to 11-year-old children | International Journal of Obesity

The carbohydrate-insulin model: a physiological perspective on the obesity pandemic | The American Journal of Clinical Nutrition | Oxford Academic

Calorie restriction for obesity treatment results in weight loss—initially—giving patients the impression they have conscious control over their body weight. But predictable biological responses oppose weight loss, including decreased metabolic rate and elevated hunger. Therefore, ongoing weight loss requires progressively more severe calorie restriction, even as hunger increases. Few people achieve clinically significant weight loss over the long term with this approach. Those who cannot might feel implicitly stigmatized as lacking in self-control.

Source: The carbohydrate-insulin model: a physiological perspective on the obesity pandemic | The American Journal of Clinical Nutrition | Oxford Academic

How a ‘tragically flawed’ paradigm has derailed the science of obesity

So little progress has been made against obesity and type 2 diabetes because the field has been laboring under the wrong paradigm.

Source: How a ‘tragically flawed’ paradigm has derailed the science of obesity