tanita

6th March 2007

Nearly there

I have been dieting now for 5 months, and am in the final month of my plan.

This has been the most satistfying diet plan that I have ever followed. I have consistantly hit my targets, month after month after month and am now in sight of my goal. That goal was 12st7lb with no significant reduction in lean mass, I wanted to lose 3st of fat – and I have (except 3lb to lose this month).

The main factors in this success have been…

  1. Weighing myself everyday and entering the data into an analysis tool such as DietPower.
  2. Adjusting the daily calorie allowance in line with actual weight loss.
  3. Cardiovascular exercise to improve overall fitness and give a greater calorie allowance each day.
  4. Weight lifting to build or maintain muscle which improves metabolic rate and makes the weight loss healthier than losing a mix of fat and muscle.

Now I am considering where to go from here. My goal weight wasn’t overly ambitious. In fact, I still have a BMI of around 27, but on the other hand my body fat percentage is around 17%, which is slap bang in the centre of the healthy range for my age.

I have changed my mind several times. I am trying to decide whether to aim to stick at 12st7lb, or go for 12st0lb.

tags: dietpower Fitness tanita weight loss | Add new comment

28th January 2007

When to weigh?

Diet Power works best if you weigh yourself every day, so that it can average out daily fluctuations caused by salt, water retention and “waste” to compute an overall trend. It works very well, to the point that I totally dismiss the general opinion that you should only weigh yourself once per week – which can lead to daily fluctuations totally hiding the progress you are making and even making you think your diet isn’t working when it is.

So, that given, what time of day?

I have been weighing in first thing in the morning, which is probably the most stable time of day for getting your weight measurement (minimising any fluctuations), and this has worked well with Diet Power. No problems so far.

A couple of months ago I got a set of Tanita scales which estimates various other body composition statistics such as body fat percentage, muscle mass and total body water. My Diet Musings entry explains why tracking your body fat percentage is a very important part of losing weight – probably more important than tracking your weight.

Again, to get a good trend line I have been collecting the stats every day when I weigh myself and computing the trend. Unfortunately, Tanita recommend that you take your BF% just before your evening meal – as that is the most stable time to measure for that.

Interestingly, the reading is about 2% less in the evening than it is in the morning and tallies much more closely with other estimates such as waist measurement. According to the Tanita, I am now in Physique Type 6, average body fat, high muscle. Nice one!

So, I am now recording my weight as per first thing in the morning, and then jumping on the scales again just before my evening meal to get the BF%.

tags: dietpower tanita weight loss | 1 comment

11th January 2007

Diet musings

What makes a successful diet? For me, losing weight is as hard as it was to give up smoking.

A significant difference is that when you give up smoking there is one very simple fact – you smoke no more cigarettes at all. Whereas you do have to eat, so when you get to the weight you want you have to carry on eating without letting the amount drift upward again. So eating well is something you have to keep an eye on for ever.

So we’ve got two aspects of dieting; losing the weight and maintenance. This post is about the weight loss aspect, I will do another post if I am successful as following a maintenance plan.

So, what is the difference about the two times in my life where I have been able to lose the weight versus the many, many other times where I fell off the wagon after a few weeks?

This post explores several key factors in my recent diet. As it is a very long post (for me), I have split a part of it away from the front page…

Motivation

Fairly obviously it’s not going to work unless the motivation is there. To try and kick an addiction just because someone else is telling you to, your partner, doctor, the news, the government, is not enough. You truly need to want to do it for your own reasons. For me it was getting fed up with growing out of another set of clothes that finally pushed me over the edge and made me decide that enough was enough. Another trigger was seeing a photo of myself from holiday that I was disgusted by. Other people may have a health scare, or catch sight of themselves in a mirror.

Calorie Intake

I firmly believe that you can only lose weight by using more calories than you consume. It’s as simple as that. Other diet techniques are either attempting to cheat this simple fact, such as Atkins where eating low-carb is supposed to force the body to burn fat, or they are variations on the theme. Weight watchers is calorie counting in disguise.

Limiting intake of fats, as a diet technique, only works because fats are high calorie foods. But, get the fat intake too low and it isn’t good for medium term health.

What I am trying to do is keep a healthy mix of the main nutrients, while keeping the total calorie intake low enough to lose weight. How much is low enough? Well, there are several ways to estimate your daily requirement and if you eat less than that amount by between 500 and 1000 calories then you will lose weight.

Don’t be tempted to cut back too much, as an extremely low calorie diet can be damaging – most recommendations say don’t go below 1000 calories less than your daily requirement, which would lead to a 2lb per week loss.

My calorie budget comes to about 1100 calories per day to lose 2lb per week. That isn’t much, really. If all I was doing is controlling my calorie intake I would find it very, very hard to eat only 1100 calories every single day. I would probably have given up after the second week.

Body fat

What you really want to lose is body fat, not just weight. If you diet with controlling your food intake alone then you won’t just be losing body fat. Your body actually finds breaking down your muscle for nutrients easier. It is not unusual for someone dieting to lose a good amount of weight, but end up with a higher body fat percentage at the end of it – and be less healthy.

Body fat is what really matters, but it is impossible to measure directly. Your weight is much easier to find out, but it isn’t that good an indicator of how well a diet is going. Simply measuring your waist each week is a better indicator than weight, or if the budget stretches far enough some body fat scales, such as the Tanita range are worth getting.

Exercise

So, how do you lose fat and not muscle? Well, I’m not sure that relatively fast diet (around 2lb per week) can burn just fat. All that you can reasonably expect is to maximise the fat loss. To do that then an exercise program to go alongside the diet will help.

Now, most people would recommend a cardiovascular workout such as walking briskly, or even running as a way of burning calories quickly and helping with the weight loss. But, a typical 10 minute jog will only burn about 100 calories, less than a Mars bar. Worse, the body needs to find the energy, and if you are eating a low calorie diet it will just as likely burn muscle as fat – not what we really want. (There are some benefits here though, which I’ll cover later).

That leaves anaerobic exercise, typically weight-lifting. Now weight-lifting burns a reasonable number of calories too (which could come from some muscle breakdown, also), but it induces muscles to rebuild, and given sufficient nutrients (especially protein) this growth will counteract the muscle wastage of being on a low calorie diet.

Remember that I said that I would find it impossible to keep to a diet where I could only eat 1100 calories per day? Cardiovascular exercise is a way of improving overall fitness while making that low-calorie budget achievable. Every 100 calories burned is an extra 100 calories that you can eat. So, on a day with a heavy workout I might have 500 calories of exercise that I can add to my budget, giving 1600 calories — much more liveable with.

Put it together

If you combine the thoughts regarding calorie intake, body fat and exercise (both cardiovascular and anaerobic) together it can seem quite confusing, and that it can’t all work together, but it can.

To reiterate, what are our goals? Lose weight. Lose body fat. Maintain muscle. Improve fitness. And we want to be able to eat enough food not to feel hungry all the time.

Here is my way of losing body fat….

  1. Work out your daily calorie budget. A deficit of 500 calories per day gives about 1lb per week. Don’t go over a 1000 calorie per day deficit. This is the engine behind the weight loss.
  2. Do three purely cardiovascular workouts per week, aiming for around 400 calories of exercise, so on those days you can eat 400 calories more. This makes it possible to eat more, and feel more satisfied as well as contributing to your overall fitness level.
  3. Do three mixed workouts, 50% cardiovascular and 50% weight lifting, in my case this gives around 500 calories that I can add to my daily budget. Again, this makes is possible to eat more, but also helps to ensure that the weight loss is more fat than muscle.
  4. Eat extra protein on days with weight lifting, so that the muscle regeneration has something to work with. But, don’t forget to take it out of your calorie budget!

That’s it. To make it work, you need to be able to fit in 6 bouts of exercise per week. Not easy for everyone, but a sure-fire way of making weight loss work. It might not be as hard as you may think, a friend has started cycling to work, a 20 minute journey each way which is the cardiovascular exercise taken care of.

Tracking

A key factor for success is recording your calories, and your weight loss progress.

I weigh myself daily, and use a program (Diet Power) to analyse that and the food that I am eating. The program smooths out the daily fluctuations due to salt, water and waste content which enables me to see my progress over time.

Quite a few experts recommend against weighing daily, and suggest a weekly weigh-in. I disagree. Daily fluctuations can be as much as 2 lb, so take a worse case scenario. On the first week you are on a low fluctuation and read 139lb. The next week you are on a high fluctuation and read 140lb. Oh no, what am I doing wrong? I’m gaining weight and I’m hardly eating and working out. Nothing works, I have a weird metabolism, I’m quitting. You really lost 1lb, but the infrequency of weighing compared with the daily “noise” makes it look like you’d gained a pound.

Daily weighing and the help of a program like Diet Power to “analyse away” the fluctuations makes it possible to see what your real weight loss is.

I also smooth out my body fat percentage readings from my Tanita scales to be able to see how much of my weight loss is fat.

Persistence

The final piece of the puzzle is persistence. Losing 50lb at a maximum safe rate of 2lb a week will take 6 months. This is a long time to be following a strict regime, and it is not possible for most people to do without the occasional wobble. In fact, how many meals out will you go on with friends? Or special events, such as Christmas or birthdays? Parties? Or even days where that Chinese takeaway is too irresistible to ignore?

My advice is based on damage limitation. The worst thing you can do is to give up entirely, so the main damage limitation is to restart the diet the next day. Simply get up, brush off the dust, and get back on that horse!

The next bit of damage limitation is to counteract the damage, if you can. If you can then restrict your calorie budget by a couple of hundred calories for a couple of days in advance and a couple of days after or have an extra workout. Don’t try too hard here, 2000 calories blown on a takeaway can’t be wiped out by an extra workout session after all, but it helps.

If you do wobble, don’t get too disheartened. Instead get focussed again and try and avoid wobbling again for at least a couple of weeks!

tags: dietpower Fitness gym tanita weight lifting weight loss | 6 comments

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