Showing posts with label weightloss. Show all posts
Showing posts with label weightloss. Show all posts

Friday, 3 October 2014

SHOULD I TRACK CALORIES OR JUST EAT CLEAN?

"Should I track Kcal or just eat clean?"
First, lets define 'clean' as foods that are generally not subjected to refinement processes prior to consumption and contain no or very little artificial ingredients. This is not black and white; there is no clear line separating 'clean' and 'dirty' foods from one another. Foods might contain clean and dirty components, meals also might be a mixture of the too which makes it difficult to be so clear cut about what's what. I don't particular like labelling foods as clean or dirty; but for the sake of the discussion we will as most have an understanding of what 'clean' eating entails (I hope).

Person a) Average trainee struggling with controlling bodyweight decides to diet. A considerable portion of their diet will perhaps be made up of calorie dense foods; breads, cereals and sandwiches with fatty fillings. These foods are easy to eat and are often branded as 'healthy/lighter' choices. The truth is that many of these foodstuffs are not much different from foods that we generally think of as 'unhealthy' in terms of kcal and or macronutrients (carbs/fat/protein). Companies pay huge sums of money to make their products appear healthy and attractive to consumers conscious of weight and health. The vast majority of shop bought sandwiches contain more fat and salt than a McDonalds Hamburger; yet have been labelled as the 'healthy' go-to for lunch in the UK for years. Add to this sugary cereals and toast or fruit juice for breakfast, coffees and tea throughout the day and a ready meal for dinner with a glass of wine and person a) will more than likely be in a calorie surplus. This means weight gain; how much and how quick will be dependant on many calories over BMR (the kcal you need to maintain body weight) that person is consuming over a longer period of time. BMR will depend on multiple factors, but it is often low in untrained/sedentary people (which makes it easier to overeat and thus gain bodyfat).

So, person a) decides to reduce carbohydrates, cut them out completely after 6pm, cuts out wine and sugar in coffee, replaces the ready meal with salad and chicken, uses skimmed milk instead full fat ETC. ETC. This is a generalisation but most people follow those sort of procedures when decided to diet.

After 4 weeks of this they will have lost some bodyweight, some of that body fat. They will then associate said weight loss with the new foods they are eating; rather than the calorie deficit that these new foods have created. Salads, vegetables, lean meats and low GI (glycaemic index) carbs such as brown rice, quinoa, oats etc. are filling and generally leave you feeling satisfied for longer. 500kcal of chicken, rice and veg is ALOT harder to eat than 500kcal's worth of microwavable lasagne, thus causing the dieter to generally eat LESS when eating 'clean'. These 'clean' foods do not have magic fat loss properties, its the reduction in kcal brought about by switching from processed, calorie dense foods which are easier to eat in large quantities, to these lighter unprocessed foods that causes the weight loss. This is something people tend to misinterpret and thus contribute to the weight loss confusion; person a) will proudly tell their friend that the secret to their fat loss was simply no carbohydrates after 6pm or by eating less red meat and more white fish but fail to realise the REAL reason why this worked; calorie reduction. The friend then desperately tries this but of course this will only work dependant on the friends overall diet and kcal intake in relation to BMR.

I'm not saying that kcal intake is the absolute be all and end all to weight management, because its not. Im not advocating a whatever fits into your kcal and you'll loose weight approach. Health is number 1, I always advocate a 'clean' eating approach; consuming MOST of your kcal from unprocessed, fresh produce. Fresh meats and fish, good quaility dairy and fibre rich carbohydrate sources aswell as nutrient dense fruit and vegetables. Allowing a small percentage of overall kcal to be derived from 'dirty' food, if you wish, will not harm your weight loss goals; as long as you eat within your BMR.

In summary, Kcal will have the most bearing on weight management and that eating 'clean' generally causes weight loss because of the reduction of kcal associated with choosing these foods over denser, calorie rich processed foods. Not because of some magical weightloss property in certain foodstuffs; which so frequently people are lead to believe. Track Kcal; apply science and common sense to your weight management and take out the guesswork. Eat mostly unprocessed foods, rich in micronutrients, but allow yourselves to eat foods that you enjoy as this WILL help in the long run.


 



For more information on dieting and how to apply it to yourself to help reach your goals, message me at rossi01@hotmail.co.uk, via www.facebook.com/naturalaesthet1cs or www.youtube.com/naturalaestheticstv

Natural Aesthetics - Dream and Achieve

Ross Newham

Tuesday, 16 September 2014

INTERVALS, EPOC AND WHY THEY ARE GOOD FOR FAT-LOSS

First, lets define EPOC: Excessive PostExercise Oxygen Consumption, or simply, recovery oxygen consumption. Following exercise, the body does not immediately return to resting levels. Light, short duration activity, which causes little disruption in body temperature and hormonal balance, is followed by rapid recovery, almost unnoticed. Of course what's classed as'light' exercise depends on the physical condition of the individual, for instance, an overweight person whom is unused to any considerable amount of exercise or even movement, will not recover as quickly doing the same activity as someone who is generally better prepared for physical exertion. One half of the total oxygen recovery consumption will occur within 30 seconds and total recovery within 4-7 minutes, this is known as the fast component in recovery oxygen consumption.


On the other hand, stressful exercise such as completing 20 back squats nearing muscular failure, or running 400m as quickly as possible will require considerable time for resting metabolism to occur (slow component). The length and the intensity of exercise will determine how long this takes; research has shown this can take as long as 24 hours for the body to return back to baseline oxygen consumption levels (McArdle, Katch and Katch, 2007). To reiterate, a considerably greater oxygen debt will be placed upon the body following strenuous exercise. This means that the body will utilise more oxygen (Litres) in an attempt to return to pre-exercise oxygen consumption.


Why does the body need so much oxygen following exhaustive exercise (where the activity requires a significant anaerobic component as well as aerobic)? There are a few factors that contribute to EPOC; a small part of it is used to aid re-synthesis of lactate to glycogen (although this is mostly the job of dietary carbohydrates - which is a good thing for fat loss). Elevated body temperature also contributes to EPOC. Temperature can rise by up to 3c during exhaustive exercise and can remain elevated for hours after the exercise. This stimulates metabolism to increase oxygen consumption during recovery. Natural Fat burners guys...
Up to 10% of of recovery oxygen will be used to take the blood from the trained muscles back to the lungs, as well as the restoration of oxygen lost via bodily fluids and that which is bound to myoglobin in the active muscles. Ventilation volumes remain elevated, the heart works harder and requires greater oxygen supply during prolonged recovery, tissue repair and redistribution of key minerals and ions and the residual thermogenic hormones relaesed during exercise all go towards keeping metabolism elevated during EPOC.


In summary, after prolonged strenuous aerobic or exhaustive anaerobic activity the body requires more oxygen for considerable lengths of time to recover. This means a potential greater kcal expenditure during EPOC, rather than just kcal expended during exercise, something which can make weight management easier for everyone.


However, attempting to train at the intensity and duration required to induce said EPOC is difficult. Extreme intensity is necessary, something which trainees need time to work up to. Imagine performing 20 back squats with a weight you would usually do 10, or a cross country race for for a 5 second pb, or perhaps 2 minutes worth of clean and press with a 70%1rm followed by 50 burpees. Extreme pain comes to mind. This is where intervals can become very useful. Shorter (supermaximal) bouts of exercise, intermittently spaced between rest periods, can produce substantial recovery oxygen consumption for well over an hour (McArdle, Katch and Katch, 2007).


An exercise that when performed continuously would normally cause exhaustion within several minutes can be split up into intermittent segments of work and rest periods. By structuring the workout in such a way a much greater volume of workload can be achieved thus overloading the energy transfer system. Exercise up to 8 seconds (all-out intensity) relies on intramuscular phosphates to provide the majority of the energy. Due to quicker recovery and lower blood lactate levels, intense exercise can follow after a brief recovery period. Total work volume over a session can increase using interval training. Christenson EH, et al. found that by adding a 5 second rest period to every 10 second of running the athlete improved the total distance ran by nearly 5 times that of the distance ran at a continuous speed before exhaustion.


Total Distance run (yards) for 4 min of continuous (until exhaustion) - 1422
Total Distance run (yards) for 10s exercise/5s rest - 7294
{Same speed for both days)


Intervals are a fantastic tool for increasing workload, past the point one would usually fail at if exercising continuously. This means greater kcal expenditure and potentially better weight management. Think twice before you jump on that treadmill and half ass that 5km. Utilize full body weight lifting movements within your intervals (squat thrusters/clean and press etc.) to produce the physiological adaptations associated with weight bearing movements (increased muscle mass/strength etc.) AND burn substantial kcal during and after exercise!


Ross - Natural Aesthetics
www.youtube.com/naturalaestheticstv
www.facebook.com/naturalaesthet1cs