Last week I saw a report on the ABC about the growing prevalence of overweight or obese kids in Australia, and it sparked a lot of angry thoughts! As one my areas of passion is seeing healthy active kids!
The stats, as you can imagine, are scary: Back in 2000, approximately 20% of teenagers were overweight or obese, now its 25% and a study conducted by the Victorian Dept of Hman Services predicts that this number will increase to 33% by 2025 (Future prevalence of overweight and obesity in Australian children and adolescents, 2005-2025 Department of Human Services, March 2008)
The consequences are sad and cruel: greater prevalence of cardiovascular disease, Type 2 Diabetes, a whole range of cancers, and mental health issues.
The reasons are both staggering, yet unsurprising:
The study reported on by the ABC was conducted by the Cancer Council and National Heart Foundation, and it revealed teens were spending too much time in front of the television with 58 per cent of students having at least three televisions in their home and 40 per cent with video games in their bedrooms. 75% of teenagers were spending more than two hours in front of screens (for school work or entertainment). A huge 82% are not engaging in more than 60 minutes of physical activity per day.
So what are we going to do about this sad state of affairs? All this takes me back to a paper I was privileged enough to co-author a few years ago. It showed that not only are both adults and children under active, but that the association between parents and their kids’ physical activity is decreasing. So the behaviour modelling strength of parents’ activity is influencing kids less! While the reason why is unclear; my guess is that its due to our changing behaviour patterns. We just don’t see as many families going for walks or bike rides together. You don’t see as many dads kicking the footy with their kids. Now we go to the gym or social sport on the way to or from work, and we are ‘done’ by the time we get home. So while we may be active, our kids don’t see us being active, so they don’t learn from our exercise behaviours!
So lets get out with our kids more. Even when I’m being active on my own, I try to make a point of telling my kids how much I enjoyed my run or bike ride around Adelaide’s beautiful trails!
Martin M, Dollman J, Norton K, Robertson, I. (2005) A decrease in the association between the physical activity patterns of Australian parents and their children; 1985-1997, Journal of Science and Medicine in Sport, 8(1): 71-76.
I have this conversation with clients at least once a week, so I thought I’d share it here for you as well. Now, while I’m an Exercise Physiologist (and not a dietician), the majority of our clients ask about dietary advice, as it’s part of the lifestyle behaviours that we often coach our clients through. We make sure that our advice stays within the scope of sharing general principles about food, supported by research from biochemistry and physiology.
So the question of ‘carbs’ intake comes up very often, as the message that a diet ‘lower in carbs’ leads to greater weight loss is well spread. This is the type of eating that I also stick to, for a number of reasons that I’ll get into later. But for now I want to address a significant part of this discussion that is often overlooked: The glycemic load (GL). Now, most people are aware of the glycemic index (GI), which relates to how quickly a food containing carbohydrate raises blood-glucose levels, depending on the type of carbohydrate chain involved. Typically, the quicker a food’s carbohydrate is broken down and absorbed into the bloodstream, the higher the GI.
The glycemic load estimates how much (rather than how fast) the food will raise a person’s blood glucose(sugar) levels after eating it. So it incorporates the GI, but very importantly, it also depends on the AMOUNT of carbohydrates the food contains!
So while a dark bread has a low glycemic index, due to the complexity of the carb chains, it has a high glycemic load, due to the many and long carbohydrate chains in it! So it provides a LOT of carbohydrate and calories. While the insulin spike won’t be high, it will be prolonged. its a slow cooker! In contrast, most vegetables will be both low GI and low GL, a perfect combination! in addition, they’ll be high in nutrient value (vitamins and minerals) as well as relatively lower in calories.
So don’t want to avoid carbs, but be aware of the total LOAD of the carbs you are eating, and make sure these match your personal energy requirements! LOAD up on the veges, and perhaps reduce the bread!
Venice is my favorite city that I have traveled to thus far. Admittedly it isn’t great for trail running, but its virtues make up for that short-coming. It is a unique place, and its fragility is evident. Every corner you turn there is evidence of ongoing maintenance to the foundations of the buildings. If not for this work the city would quickly be swallowed by the ocean.
I believe that becoming, and remaining a good runner requires a strong foundation. But unfortunately I believe runners are built in Venice, so therefore require consistent attention to their foundations.
What do I mean by a ‘foundation’ in the context of the runner? The following hallmarks constitute my idea of a runner’s foundation: