Showing posts with label data. Show all posts
Showing posts with label data. Show all posts

Friday, December 6, 2013

Day 2.5: You're Not Old Yet

Friday, Friday, Friday, yeah!  Kathryn was an inspiration: 3 batches of cookies and no tasting...amazing willpower!

Today's usually my fail day, so last night I prepped a lot of veggies to snack on.  I'm still sick but that first night of long sleep at the onset really made me feel better sooner.  So I'm resting again today, but I'm doin' some yoga.

After our messaging discussion about the blogging photos and posts, and Kathryn's comment about age, I decided to do some homework.  About four aritcles, 45 minutes, and a lot of scientific studies later, here's the conclusion:

"A decline in aerobic fitness was noted after age 40, which accelerates as individuals enter their sixth and seventh decades. This decline is independent of muscle mass and physical activity levels. Thus, the bad news is that your aerobic fitness will decline with age no matter what you do. The good news is that individuals who start with higher aerobic capacity and continue their activity habits throughout life maintain a greater fitness level at all points in the aging spectrum. In light of the relationship between aerobic fitness and mortality, this suggests that performance of regular exercise throughout the lifespan will both lengthen life and postpone and compact end-of-life disability."
http://circ.ahajournals.org/content/112/5/624.full

So, basically, being healthy now is important because it will carry you into old age, like savings in a bank account (I know I got Kathryn's attention).  The first biggest drop for women happens AFTER 45.  And that drop is only 20% of overall aerobic fitness, gradually happening in our 40s and 50s.  The steepest drop will happen during our 60s and 70s, more than 20% per decade.

In addition, our metabolism slows, BUT only 2-8% per decade, a number that can easily be offset by exercise.  Based on our TDEE calculations from November, the number is only (4.7 x your age) x your activity level factor, which adds up to about a 50-150 calorie reduction in our daily needs every decade, or 2-8%.  This happens gradually over each 10 years.  We can all burn 50-100 calories extra per day, can't we?

So keep running ladies, we have years & years & years to go!  


Age is all in your attitude!  




Thursday, November 21, 2013

Day 1.4: Truth In Numbers - Daily Caloric Needs





Happy Thursday!  Are you spending as much time in the little girls' room as I am?  Whew.  Every time I increase my water intake, I feel like  the "gotta go right now" commercial.  Your skin is thanking you for all the clean, hydrating water you're drinking.  Just don't drink after dinner if you don't wanna be up all night.  Ugh.  Fear not, keep drinking and your body will adjust to all the extra fluids.  Drinking water also burns fat, ta-da!  I worked my abs, thanks to Kathryn, and I'm pretty much sore all over. Sweet!

I love fitness data.  I love seeing what my BMI is.  I love putting in my goal weight and seeing what my BMI would be, if only I had some self control.  Sigh.  I love scales that read body fat percentage.  I love heart rate monitors and GPS distance devices that tell me mileage and speed.  I pretty much love any form of fitness data.  I'm a junkie.  Why?  Because numbers don't lie.  It's not for everyone, but it can be very useful in your journey.



Information is power.

Here are some terms you should know:

BMR: Basal Metabolic Rate is how many calories you burn just living.

BMI: Body Mass Index is your weight to height ratio.

TDEE: Daily calorie needs, based on BMR, age, current weight, and activity levels.  This is where you start, then reduce calories to a weight loss level.  Another method is based on body weight alone.

We've started with a basic 1400 calorie diet in the First 10 Days.  As our eating habits improve and our activity levels increase, we can adjust to find the right caloric intake to lose weight but feel energized enough to keep moving, and work harder.

BMR:  Follow this link to find out how many calories you burn just living.  http://www.myfitnesspal.com/tools/bmr-calculator

BMI: Follow this link to find out what your BMI is.
http://www.nhlbi.nih.gov/guidelines/obesity/BMI/bmicalc.htm
The National Heart Lung and Blood Institute (gross) has set up a weight range that is healthy for your height.  Play with it enterting different higher and lower weights and notice the broad range for your height.  Somewhere in that range you will find your happy weight, or personally sustainable weight.  You know when you are too heavy, even if it falls into the acceptable healthy weight category on NHLBI.  The reason for the broad weight ranges is to account for the fact that muscle weighs more than fat.  My healthy weight range is 115-154 lbs. (what the?!)  NOT HEALTHY on either side of the range if I am 40% body fat.  I wouldn't worry about being at the high end if I'm muscular and under 20% body fat.

Ok.

Daily Caloric Needs:  Get ready for some serious math, girls. There are six components that determine how many calories you need each day: BMR, activity level, weight, lean body mass (muscle, or LBM), age and gender.

Math 101 version:
to achieve Fat loss = 12-13 calories per pound of body weight (140 lbs x 12=1680 cal per day)
to Maintain (TDEE) = 15-16 calories per pound of body weight (140 lbs x 15 = 2100 cal per day)
to Gain Weight  = 18-20+ calories per pound of body weight (140 lbs x 18 = 2520 cal per day)

Math 401 version: (get a pencil and paper, a TI-84 calculator, and your junior high student)
Women: BMR = 655 + (9.6 x weight in KG) + (1.8 x height in CM) - (4.7 x age in years)
This is a link to a metric conversion calculator: http://www.metric-conversions.org/

1. Convert your height in inches to centimeters, and your weight in pounds to kilograms.  Write these two numbers down.
2.  Write out the above equation filling in the two metric numbers you converted, IN THE CORRECT PLACE.
3.  Remember the order of operations and do the math inside the parentheses first.
4.  Now do the whole equation.
5.  Congratulations!  You now know your BMR, the basic number of calories you need to live.

Deep breath, and no weeping.  If you're arguing with your junior high student over methods, separate, please.  One more step.

TDEE:

Take your BMR that you just figured out.  Then use the following table to adjust for your activity level to find your TDEE (Total Daily Energy Expenditure):

Activity Factor:
Sedentery = BMR x 1.2
Lightly Active = BMR x 1.375
Moderately Active = BMR x 1.55
Very Active = BMR x 1.725
Extremety Active = BMR x 1.9

Be honest.  Walking up and down the stairs 20 times per day does not make you Very Active.  Neither does cleaning house, chasing kids (unless you are sprinting), or standing at the sink doing dishes.  I'm always looking for an excuse to eat more calories, because I need to stay alive, right?  Overestimating your activity level will just sabotage your fat loss efforts.

For me, it ended up like this:

BMR = 655 + (9.6 x 62kg)   + (1.8 x 167.64cm) - (4.7 x 37 years)
BMR = 655 + 595.2 + 301.75 - 173.9
BMR = 1378 calories per day to be a functioning body

Now I multiply by my activity factor, which I would say is Moderately Active 9 (yesterday, if I'm honest, sedentary) , and I get to eat 2136 calories per day to maintain my current weight.  If I see the scale stubbornly staying at 138 I KNOW I am eating this many calories.  Fact.

Notice how the age portion of the equation indicates that the older we are the more calories we are subtracting from our daily total needs.  The older you are the less you burn so the less you need.  Boohoo.

Another Fact: if you want to lose weight you have to eat less than your TDEE.   Eat 500 calories or 15-20% less calories than TDEE to lose weight and not move into starvation mode.  Myfitnesspal suggests that the minimum daily caloric intake for a woman is 1200 calories.  Lower than that and you are not doing yourself any favors: you'll be hungry, your body will store fat, you won't be able to exercise effectively or efficiently,  you will lose muscle instead of build it.

And forgive me; you know how I adore math.


Information is power, ladies.  Use it to kill it today!


Wednesday, November 20, 2013

Day 1.3: Torch That Fat!

I almost missed working out yesterday.  I left it until the very last possible minute.  I just wasn't motivated and found lots of other things to do instead. But I really couldn't skip, now could I?  So I didn't.  I think I've officially created a new habit.  Yes! 

Working out. I hope you haven't hit boredom already, but if you've been treadmilling it for months and feel like you are just going through the motions, this post is for you. Kathryn ;).
So here's your challenge.  
Mix it up.  

Why? How? What?  Help!

Fact: Bodies at rest burn calories.  Doing your everyday routine: staying alive, chasing toddlers, and keeping the house looking respectable burns calories. This is called your Basal Metabolic Rate.  
(or BMR - more on this important number later.)

Muscle burns calories.  Fat does not.  SO the more muscle you have the more calories you are going to burn just doing the daily grind.  This is the miracle of exercise miracles.  The holy grail.  The truth you've been waiting to hear. The parting of the clouds and the feel of the sun on your face.  Overstated?  Maybe a tad.

Incorporating resistance training into your workouts 3 times per week increases your muscle mass, increases your metabolism (the rate at which you burn calories), and decreases your body fat percentage. What did I tell you? holy. grail.

I saw two articles in Shape Magazine just Monday that explain how make this interesting fact a reality in our exercise regime.  They both tell us to workout like a man.  Pffft, whatever.  No really.  Pay attention.

1.  Keep exercises simple by doing multi-muscle group exercises with weights, like squats with an overhead press.

2.  Do less cardio.  No, you didn't misread anything.  LESS cardio.  Muscle burns fat more efficiently, even at rest, and as the queen of efficiency, I like that.  You can accomplish more in less time lifting weights than running/riding/aerobicizing moderately for an hour.  Sweet.

3.  Up the intensity.  That means WORK HARDER!  Be out of breath, huffing and puffing; say the Pledge of Alleigance: if you can barely say it comfortably then you are working out hard enough.  (this is called the Talk Test.  More on RPE later.) Longer workouts are not always better.  It all comes down to how HARD you are working.
Short and intense > long and moderate/mild.  
(you recognize the "greater than" symbol, right?) 
Long and intense > short and intense

So try this Countdown Workout today, give it some concentrated effort, with a 2-5 lb weight.  Use a jug of milk, a can of spaghetti sauce, or your smallest child.  See how you feel.  See how strong you are!  And have fun!

Countdown Workout
Perform 10 reps of a kettlebell (or dumbell) swing
Without rest, do 10 reps of burpees
Still without resting, do 9 reps of the swings
Now do 9 reps of burpees

Continue this pattern until you do just 1 rep of each exercise, trying to rest as little as possible (or not at all) between moves.

What is a kettlebell swing, you ask?  Here's a photo.  Just swing.  Keep back straight through the exercise, eyes in front, head up.  Swing and stand using your legs, NOT your back.





And here is a burpee:


See the full article here: http://www.shape.com/weight-loss/weight-loss-strategies/3-reasons-you-dont-lose-fat?utm_source=FitnessNewsletter&utm_medium=Newsletter&utm_term=AllNLsubscribers&utm_campaign=FitnessNewsletter111813&utm_content=Final

If you're interested and more advanced in the weight lifting category, look at the link below called "22 Men's Exercises that Women Should Do", and you should totally laugh at what the photo models are wearing.  Oh my!


Sore today, stronger tomorrow!