Expert busts four common myths about exercise and weight loss 22



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It’s that time of year when many are trying, and some are failing, to live up to their New Years’ resolution of losing weight. Many of these probably include resolutions to be more physically active in striving for this goal. But first, there are some common misconceptions about exercise and weight loss that need to be addressed.

Myth 1. Exercise is the best way to lose weight

While there is plenty of evidence showing people can lose weight just by being physically active, it is also one of the hardest ways to go about it.

Our energy balance is mostly determined by what we eat and our metabolic rate (the energy you burn when you do nothing). Our energy balance is determined only to a small extent by how active we are. That means losing weight just by being active is very hard work.

The American College of Sports Medicine recommends accumulating 250 to 300 minutes of moderate intensity exercise per week for weight loss. That is twice the amount of physical activity recommended for good health (30 minutes on most days), and most Australians don’t even manage that.

The best way to lose weight is through combining a nutritious, low-calorie diet with regular physical activity.

Myth 2. You can’t be fat and fit

Inactive people of healthy weight may look OK, but this isn’t necessarily the case. When you’re not active you have a higher risk of heart disease, diabetes, high blood pressure, osteoporosis, some cancers, depression and anxiety. Several studies have demonstrated the association between premature death and being overweight or obese disappears when fitness is taken into account (although another study disputed this).

This means you can still be metabolically healthy while being overweight, but only if you’re regularly active. Of course, people who are fit and of normal weight have the best health outcomes, so there are still plenty of reasons to try to shed some weight.

Myth 3. No pain, no gain

Or in other words, “no suffering, no weight loss”. As mentioned earlier, if you want to lose weight by being active, you will need to do a lot of it. But while physical activity of a moderate intensity is recommended, guidelines do not say activity needs to be of vigorous intensity.

Moderate intensity physical activity makes you breathe harder and may make it more difficult to talk, but you should still be able to carry on a conversation (such as brisk walking, riding a bicycle at a moderate pace). This is unlike vigorous physical activity, which will make you completely out of breath and will make you sweat profusely regardless of the weather conditions (such as running).

Moderate intensity physical activity is not painful and does not include excessive suffering to meet your goals. A study of weight loss in groups with higher intensity and lower volumes of activity compared to groups of lower intensity and higher volumes of activity did not find significant differences.

Myth 4. Only resistance training will help you lose weight

Resistance or strength training is good for you for several reasons. It increases functional capacity (the ability to perform tasks safely and independently) and lean body mass, and prevents falls and osteoporosis. But the main idea for promoting it to lose weight is that muscle mass needs more energy than fat mass, even when at rest. Therefore the more muscular you are, the higher your metabolic rate, which makes it easier to expend the energy you’re taking on board.

However, building muscle mass takes a serious effort, and you need to keep doing resistance training or significant loss of muscle mass will occur within weeks.

More importantly though, aerobic or endurance training is also good to help you lose weight. In fact, a recent study demonstrated that endurance training was more effective in producing weight loss compared to resistance training. It’s also likely many people will get more enjoyment out of a brisk walk than a session of weight-lifting, so the most important thing is to pick an exercise routine you enjoy and thus will actually stick to.

To help you get started on your journey to a more active and potentially leaner lifestyle, you can sign up for free physical activity programs such as If you want to take part in our web-based physical activity research study, you can register your interest here.

The ConversationAre you currently trying to lose weight? What’s your strategy? Do you agree or disagree with these myths?

Corneel Vandelanotte, Professorial Research Fellow: Physical Activity and Health , CQUniversity Australia

This article was originally published on The Conversation. Read the original article.

The Conversation

The Conversation is an independent source of news and views, sourced from the academic and research community and delivered direct to the public. Their team of professional editors work with university, CSIRO and research institute experts to unlock their knowledge for use by the wider public. We republish The Conversation's content under Creative Commons License.

  1. I just started on my healthy eating, weight loss lifestyle last week. This morning I weighed myself for the first time in a week and I have lost 1.9kgs. (This much loss won’t be realistic every week, aiming for 1kg) I have cut down on portion size and I’m watching what I eat in the afternoon. From what the experts tell me that not having enough protein earlier in a day encourages extreme hunger in the late afternoons which means you will reach for food types that give you instant satisfaction. And for me that is exactly what I have done in the past. So portion size, drinking water and a food diary is what I have started with. A great electronic food diary is Tracker2go and it can be synced to your mobile devices which means you can take it with you when you leave home, I wouldn’t be without mine. Now I have mastered this, getting back to swimming 5 days a week is next.

  2. I think this article makes sense to me – we walk the dog every day and I strive for the 10k steps a day, but often fall a bit short. At the moment we’re on Dr Phil’s 20/20 diet. It has been amazing for us, we’ve lost 3+ and 4+ kgs over 18 days, it’s slowed down in the last week, but the food is all whole food, really easy to put together, has good variety (I’ve now added meat) and we’ve never been hungry. I have adjusted the diet for my husband who is “allergic” to anything green….. But for us, it has been the best ever, and he’s into his suit and I’ve just put a big gusset into a wedding outfit I wore 13 years ago at our daughters wedding…BUT it’s held together with small safety pins cause I’m determined it will be a smaller gusset by 6 Feb…

    1 REPLY
  3. A good diet and exercise is essential for losing weight and keeping healthy. It’s hard for older people to lose weight because most weight loss programs on the market are aimed at people aged below 40. I know a fitness program that was made for people aged over 40, it will help you achieve some great weight loss results and give you a well toned physique. It accounts for the physical limitations of the body for people in that age group. The program is designed to help users achieve specific fitness goals such as weight loss, body toning, or muscle gain. Your current fitness levels will determine how far you can go, but generally, the exercises included in the guide are within the capability of the target age group. Read more about it here:

  4. A friend has a motto for weight loss and it comes down to
    Zip it and move it.
    (Zip the mouth move the body)
    It works.

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    • Yes, losing excess weight is not rocket science, you don’t need experts to tell you how to do it, it’s just common sense.

  5. I agree with most things in the artical, but the best way to lose weight is to eat less/move more. At 60+ we all know what we should be doing, its just putting it in to practise is the hardest.

  6. I have just lost 45kg, and it is simply just eat healthy and exercise more. All I did was walk walk walk and smaller plate of food but still had plenty to eat.

    1 REPLY

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