Category: Health

Sleep deprivation leads to obesity

Sleep, obesity and video games (image from the USDA).

A new study links sleep deprivation to obesity in adolescent boys. There have other studies linking lack of sleep and obesity, but this is one of a few looking specifically at adolescents.

The study was presented at the annual Pediatric Academic Societies meeting under the title Is Sleep Related to Obesity in Young Adolescents?. Interestingly enough, there was less of a correlation for girls.

However, in girls, sleep duration was not related to any of the weight-related variables with the exception of less sleep on weekends being related to BMI. – Lytle, Pasch and Farbaksh, 2010.

The USDA has a nice page that touches on the research that’s looking for specific links between sleep deprivation and weight. Their take is that kids don’t get out enough because increased opportunities for indoor entertainment don’t require much activity and disrupt sleep cycles. They suggest that fat cells themselves may respond to changing circadian rhythms.

Abnormal sleep/wake patterns may change circadian clocks that normally allow cells to anticipate variations in the outside environment, such as changing levels of nutrients (glucose, fatty acids and triglycerides) and hormones such as insulin. – Flores, 2007.

I don’t know enough to speculate as to why, but, thinking out loud, I wonder if boys’ predilection for overusing video games has any link to the obesity issue.

Daydreaming …

Focused work. We like to see our students focused on their work and we give them long blocks of time to do so. It is hard, however, for anyone to stay on task for two hours straight. You have to allow for a certain amount of mind wandering and daydreaming. What a lot of neurologic research is uncovering is that zoning-out is an essential part of putting the pieces together and helps with learning.

When we are no longer even aware that our minds are wandering, we may be able to think most deeply about the big picture. – Zimmer (2010)

Daydreaming by Edward Harrison May (1876) (from Wikimedia Commons).

While we sleep the brain assembles information into coherent patterns, helping us learn and process emotions. Carl Zimmer has an article in Discover Magazine on how unfocused daydreaming accomplishes the same thing.

Self-respect rather than self-esteem

[S]elf-esteem is but a division of self-importance, which is seldom an attractive quality. That person is best who never thinks of his own importance: to think about it, even, is to be lost to morality. Self-respect is another quality entirely. Where self-esteem is entirely egotistical, requiring that the world should pay court to oneself whatever oneself happens to be like or do, and demands nothing of the person who wants it, self-respect is a social virtue, a discipline, that requires an awareness of and sensitivity to the feelings of others. It requires an ability and willingness to put oneself in someone else’s place; it requires dignity and fortitude, and not always taking the line of least resistance. – Dalrymple, 2010.

Self-respect is earned, while self-esteem is not. That at least is the argument of Theodore Dalrymple, who defines this interesting distinction between self-esteem and self-respect based on his observations as a prison psychiatrist. What people want is a “just appreciation of one’s own importance and of one’s own worth.” To assume that one is entitled to respect because of one’s intrinsic strengths is destructive because it says that you don’t have to do anything to get respect. But respect is earned. Both importance and worth are values that are ascribed by others, by society, and to earn them requires effort and achievement. Self-respect is the appraisal of oneself based on one’s contribution to society.

It’s an interesting argument in semantics at the very least, but the fundamental argument at least aligns with the proper way to use praise and rewards. By praising the effort you acknowledge the importance of work in achieving goals, building self-respect, rather that praising intrinsic abilities (“you’re so smart”) that engender a sense that the student is entitled to do well.

One has only to go into a prison … to see the most revoltingly high self-esteem among a group of people … who had brought nothing but misery to those around them, largely because they conceived of themselves as so important that they could do no wrong. For them, their whim was law, which was precisely as it should be considering who they were in their own estimate. – Dalrymple, 2010.

Theodore Dalrymple is a conservative in the dictionary sense of the word. He argues the importance of tradition and personal responsibility. He also strongly believes that healthy culture must satisfy the need of people to belong to something larger than themselves. So much so, that despite being an atheist, he argues that religions, some types of religions at least, have an important role in society.

Do they really not care?

Adolescents like to tick you off. Push all of your buttons to see what happens. And you want to ask, “Who are you really?” and, “Do your really not care?” We probably did the same when we were that age, but do you also remember how idealistic we were? The video below, from Penguin Publishing (found via The Dish) captures a bit of that duality of the adolescent mind. The use of white space and of just simply words also ties it quite nicely into our ongoing discussion of poetry in a “spark the imagination” kind of way.

Sleeping in

Sleeping in (from Mediawiki Commons)

Sleep rhythms change during adolescence. Students often find it harder to get to sleep at night and harder to get up in the morning. Their best time for learning is in the afternoon. So why not just adjust the school day? Margaret Ryan has an interesting article on the BBC website about an English secondary school that did just that, starting lessons one hour later at 10:00am. Their preliminary results seem favorable, but the research has not yet been published.

Prof Till Roenneberg, who is an expert on studying sleep, said it was “nonsense” to start the school day early.

He said: “It is about the way our biological clock settles into light and dark cycles. This clearly becomes later and later in adolescence.”

Prof Roenneberg said if teenagers are woken up too early they miss out on the most essential part of their sleep.

“Sleep is essential to consolidate what you learn,” he said.

Dealing with test anxiety

Afghan college entrance exam day. From Wikimedia Commons.

In the middle school our students have to take tests. While it’s not quite as bad as the Afghan college entrance exam, there’s the annual standardized test, and then there are the cycle tests every six weeks. Even with the cycle tests, some students have test anxiety. They see a math test with almost identical questions to the ones they have been doing perfectly for weeks and they freeze. I asked Ms. P. to look into strategies for dealing with test anxiety, and as usual, she came up with an excellent list of links.

Her favorite, which I also like, is Penn State’s University Learning Center’s Test Taking and Test Anxiety website. They, however, appear to have gone missing, but Effective Study’s How To Overcome Test Anxiety seems a good alternative. TeensHealth’s page is also good and aimed at a younger audience, although there is not much difference in the level of the writing for a middle schooler. If you need a clear list of things to do before and during the test, Study Guides and Strategies has an excellent page.

These sites tend to recommend preparing well and using relaxation techniques, such as deep breathing, during the test.

Other resources:

Exams in Jaura, India (from Wikimedia Commons)

Mercenaries on the playing field

These, in the day when heaven was falling,
The hour when earth’s foundations fled,
Followed their mercenary calling,
And took their wages, and are dead.

Their shoulders held the sky suspended;
They stood, and earth’s foundations stay;
What God abandoned, these defended,
And saved the sum of things for pay.

– A.E. Housman

Three themes converged on the playing field today; poetry, competitive sports and video war games. We’d used Alfred Houseman’s “Epitaph on an Army of Mercenaries” for a lesson on OULIPO yesterday because it’s short and one of my small groups had presented a week ago so we were all familiar with the poem. We’d been trying post-games discussions after frizbee (and soccer) to learn sportsmanship. We’d been having issues with video games and the definition of the word “duty“. I’ve long suspected (and would love to find a study that looks into this) that video game players are more likely to give up when the odds are against them because they are so used to just restarting the game (or respawning).

Today at the end of our post game discussion, I recited Epitaph to highlight the strength of character shown by some of the players who put up a great comeback despite part of their team stopping playing. It was a serendipitous convergence of three themes we’ve been dealing with this entire cycle (if not the whole year). It was a moment when I really appreciated being able to be so engaged with all parts of the curriculum.

Sportsmanship

“Winning is the easy part, losing is really tough. But, you learn more from one loss than you do from a million wins. You learn a lot about sportsmanship. I mean, it’s really tough to shake the hand of someone who just beat you, and it’s even harder to do it with a smile. If you can learn to do this and push through that pain, you will remember what that moment is like the next time you win and have a better sense of how those competitors around you feel. This experience will teach you a lot on and off the field!” – Amy Van Dyken

Sports bring out the best and the worst in us. In victory and defeat. When the competitive fires burn fiercest they strip away facade and open windows into the soul. We’ve been playing Ultimate Frisbee on and off all year for PE and like it because it offers, in a microcosm, a remarkable view into the character of my students. Subtle behaviors in the classroom get magnified on the playing field; the willingness to quit when the score is against you versus the quiet perseverance no matter what happens. Yet, if the way we act when we play sports reflects the our character, then perhaps we can shape our character by changing the way we act when we play. That’s what “they” mean when they say that playing sports builds character.

“How a man plays the game shows something of his character; how he loses shows it all.”
-Tribune (Camden County, GA)

I’ve also come to realize that team sports can work as a substitute for co-operative games if I insist on a half-time team talk and a post game discussion by the whole group. The half-time talks are turning into pep talks and the post-game talks are proving very useful. I choose someone at random to give the talk.

There are times when you’re tired and times when you don’t believe in yourself. That’s when you have to stick it out and draw on the confidence that you have deep down beneath all the doubts and worries.” -Jim Abbot

I have not had many post-match group talks, but I am rectifying that. After each game, the group need to address some reflective questions:

  • What worked?
  • What was challenging?
  • How did you feel?
  • What did you learn?

Once again, we practice reflective thinking, although this time it’s for the group as well as the individual. We’re building abstract thinking skills as well a character, and hopefully, they both reinforce each other.

“The answers to these questions will determine your success or failure. 1) Can people trust me to do what’s right? 2) Am I committed to doing my best? 3) Do I care about other people and show it? If the answers to these questions are yes, there is no way you can fail.” –Lou Holtz