Tag: bmr

Tuesday Tip

Tuesday Tip: 2000 / 2500 cals per day?

Dr Nancy P

Tuesday Tip: 2000 / 2500 cals per day?

You may have heard the recommendation that women need around 2,000 cals a day and men need 2,500? It’s a figure bandied about as the guidelines for health by the NHS and others – but is that really what you should be aiming for and where did it come from?

It actually came from a USDA study on calorie requirements which was then reduced by 20 percent (to cover a wider range). To further complicate things Public Health England then announced women should actually aim for 1800 cals.. confused? Yep me too and rightly so!

Sadly it’s not as simple as one number fits all. Your calorie requirement is influenced by height, age, gender, some

medical conditions, muscle mass and activity levels, so to suggest 2,000 cals would be appropriate for all women (or 2,500 for men) is ridiculous. I know personally that if I have 2000 cals a day I put on fat. If you’re trying to lose fat then your calorie intake will also need to be less.

So what should you aim for and how do you work it out? There are plenty of online calculators out there – you enter your details and it will give you an estimate of your basal metabolic rate (basic calorie requirement to function). Many will give you the option to specify how active you are – my advice, if you’re aiming to lose fat, is to opt for a lower activity level as most studies show we massively overestimate our exertion and activity levels. This will give you an initial calorie goal to aim for.

It’s not an exact science – you’ll need to try eating that calorie level for a few weeks and see how the body responds and then adjust it up or down accordingly.

At the end of the day if you’re trying to lose fat/weight and you’re not then you’re eating too many calories – regardless of what an online calculator tells you.

If you’re stuck feel free to drop me a message and I can help you work out a rough calorie goal for you 🤗

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: How Many Steps?

Dr Nancy P

Tuesday Tip: How many steps? 🚶🏼‍♀️

We’re all used to being told to walk 10,000 steps a day – but why 10,000?

It turns out the 10,000 number isn’t based on loads of research and evidence, it’s in fact based on marketing for a Japanese pedometer in the 1960s and may not in fact be the holy grail for health it’s built up to be.

10,000 steps equates to roughly 5 miles (depending on gait etc) – when you’re just starting out that’s actually a really long way! You may not have the confidence or fitness to get close to 10,000. So having that goal can backfire if you’re constantly not hitting it and feeling bad. Also of course most trackers tend not to include things like swimming, cycling or spinning in the step count or any resistance training so it’s not an accurate measure of activity. On the flip side for some hitting 10,000 is a walk in the park (🤣) due to their job or commute so why have that as the goal?

A better approach, and one I use with my clients, is to track your current steps for a week or so, and look at the patterns. Then set goals based on those – so if on work days you’re only hitting 4,000 steps, there’s no point aiming for 10,000 if you physically can’t get them, instead aim for 6,000 instead – a moderate increase in activity. And rather than just focusing on steps think about increasing overall activity across the week.

Studies suggest 150 mins of moderate aerobic activity (walking, Swimming, gardening etc) , or 75 mins of intense activity (hiit classes, spin, etc) per week is the minimum requirement for overall health. If you’re trying to lose weight start there and then if you’re hitting it increase the goals.

When it comes to fat loss increases NEAT (Non-exercise activity thermogenesis) or the energy expended for everything we do that is not sleeping, eating or sports-like exercise, is what matters in terms of increasing your overall calorie burn. So garden, walk, fidget, stand up – be as active as you can! And forget 10,000 and set yourself some realistic step goals.

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: Combat Slowing Metabolism

Dr Nancy P

Tuesday Tip: Combat Slowing Metabolism 💪🏼

I am often asked how to combat a slowing metabolism as we age. Metabolism (basal metabolic rate – BMR) is the number of calories your body needs to carry out basic bodily functions at rest (breathing, circulating blood, cell repair, hormone balancing etc). Contrary to popular believe your metabolism doesn’t slow down as you age. What actually happens is that physical activity reduces and lean muscle mass is lost. This means a lower BMR giving the effect of a slowing metabolism. So how can you prevent this happening and keep your metabolism firing?

# 1 Be more active

Work activity in to your day – walk more, stand more, try new classes/exercises etc.

# 2 Resistance training

It’s important to build and maintain muscle so ensure you are doing some resistance training in the form of a class (e.g. pump) or in the gym itself.

# 3 Avoid fad diets

Extreme dieting can cause a down regulation in metabolic rate which can persist for years after the dieting ends. Cutting calories is fine but do it in a steady and sustainable way, in conjunction with physical activity, to help preserve muscle mass.

# 4 Find your motivation

Find what motivates you; is it the form of exercise? the social aspect of classes? the feeling of getting stronger? fitting in to your jeans? being able to run around with your children or pets? Whatever it is find that thing that keeps you going – write it down and keep it somewhere you can see it.

# 5 Get good habits

Find some healthy habits that work for you; track your food, exercise regularly, find alternatives to eating when you’re stressed (adult colouring books, reading, a bath etc), and measure your progress. Studies show those who measure their progress regularly are more likely to lose fat and keep it off long term.

# 6 Get hungry

Listen to your hunger signals and learn how to tell when you’re really hungry vs bored/emotional. A little hunger is a good thing; train your body to recognise actual hunger, Practice mindful eating – pay attention to what you eat, and when you eat, to help avoid boredom or stress eating.

Happy Tuesday 🤗

Xx

Tuesday Tip

Tuesday Tip: Bigger weights aren’t always better

Dr Nancy P

Tuesday Tip: Bigger weights aren’t always better 🏋🏻‍♀️

If you want to get stronger and fitter you have to lift heavy weights in the gym, right? Wrong! Several recent studies have shown this isn’t the case at all. You may have seen mention of this on the TV last week, I’ve had a look into the study behind the story.

Recent studies in the Journal of Applied Physiology found that lifting light weights (30 -50% of 1 rep max) for more reps, was just as effective as lifting heavy weights (up to 75-90% of 1 max rep) for 8 – 10 reps both for increasing strength and muscle size. Participants took part in a 12 week program of total-body resistance training (leg press, bench press, shoulder press, leg extension, bicep curls) – half used light weights, half used heavy, all lifted until failure. After 12 weeks, both groups made equal gains in strength and size, except for the chest press, where in fact those lifting lighter weights showed greater gains! Muscle strength increased 25-30%, and both groups put an average of 2.4 pounds of lean muscle on. In addition, biopsies of the muscles showed there was no difference in the growth of muscle fibres in either group (type I and II).

If you want to get stronger then you need to increase your muscle mass (don’t confuse this with getting “bulky”) by activating as many muscle fibres as possible. Day to day activities use the type I fibres first. As demand on muscles increase (more reps, or more weight) you recruit type II fibres – which is what you want. Conventional wisdom states that you can ONLY recruit type II fibres by lifting big weights for fewer reps, but what these studies show is that you don’t need to do that. The key is lifting to fatigue – with whatever weight you choose.

Great news for anyone who wants to get fitter and leaner but doesn’t fancy lifting heavy weights in the gym. You CAN still get strong by doing things like body pump, or workouts with smaller weights IF you are reaching fatigue by the end of the set or track. Lift to the point of exhaustion and it doesn’t matter whether the weights are heavy or light.

Happy Tuesday 🤗xx

Tuesday Tip

Tuesday Tip: Understanding Metabolism

Dr Nancy P

Tuesday Tip: Understanding Metabolism🤓

Despite what you might think most of your daily calorie burn doesn’t come from gym workouts. Calorie burn is driven by your metabolism (converting food cals to energy for your body). Your metabolism determines the number of cals you need to maintain your weight.

Your calorie burn consists of:

#1 60-70% Basal metabolic rate – the cals you need at rest, to survive; breathing, digesting, filtering waste, nothing more. It varies with body size (bigger = higher bmr), composition (more muscle = higher bmr), age (younger = higher bmr), genetics, hormones (thyroid hormones) and health (ill = higher bmr).

#2 10% is from food thermogenesis (digesting food). Protein requires the most to digest. 0-3 percent of fat cals are used to digest it, 5-10 % for carbs and 20-30 % for protein. But as food thermogenesis only accounts for 10% of daily burn, eating more protein will only have a small effect on your metabolic rate.

#3 20% is from physical activity – walking, workouts, and day to day activities; typing, carrying heavy loads, standing, fidgeting, shopping, singing etc.

So if you aren’t seeing the results you want, but are tracking your food right, then maybe you’re overestimating your calorie burn? There’s lots of tips out there to boost metabolism e.g. eating more frequently, or not eating late at night etc but few have studies to back them up.

Some tips which are backed by science include:

# including strength training in your workouts. Boosting your muscle mass increases your BMR and burns more calories at rest. You don’t have to lift big weights – pump classes or body weight exercises are also effective.

# increase intensity in your workouts; short bursts of intense effort increase afterburn e.g. intervals when running, swimming or cycling, or doing workouts that naturally include it like hiit/ bodyattack/ circuits etc.

#3 Eat enough protein. You’re still only contributing a little extra burn, but by ensuring you have protein with every meal you will not only burn a little more digesting, but more importantly you’ll feels fuller for longer, and you’ll have amino acids to support muscle recovery and repair.

Happy Tuesday 🤗xx