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Comment: Re:Food is not the limiting factor (Score 1) 377

by denzacar (#48194827) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

Three segments launched and assembled in orbit to form an H with the comm dish in the middle bar.

That's not much of a joke.
It needs at least six more segments like that, plus seven more to even get a "HA-HA".
Maybe less if there are two comm antennae so it's all arranged into a "H@-H@".

Comment: Nothing gross there. (Score 1) 377

by denzacar (#48194785) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

You said it yourself.

an average estimate

If you are clocking in below average... you are below average.

I.e. That is either not an average woman, or she is not eating all calories she needs cause she's on a diet, or she is getting her calories elsewhere, OR, and here's a radical thought...
The author of that article is not as scientifically literate and/or diligent as she thinks she is.
And either those men and women were doing radically different things or it is simply not even bad science but bad and inaccurate measurement.

1475 calories per day is VERY low for any adult.
Those are Auschwitz and Mauthausen portions.
Only difference being that these would-be astronauts don't have to do backbreaking work for 12 hours each day.
At least those doing just fine on 6 powerbars a day are not.
Regardless, if you can eat that much and not lose weight, you are FAR below the average, bordering on malnourished.

http://www.holocaustresearchpr...
       

Food
Prisoners in the camp received three meals daily - in the morning, at midday and in the evening.
In the morning the prisoners received only a half litre of black coffee or of a herbal brew known as tea. These liquids were generally unsweetened.
The midday meal consisted of one portion of soup measuring about three quarters of a litre, with a value of 350 - 400 calories. The soup was foul tasting and watery, with 'meat' four times a week and the rest with vegetables.
For supper the prisoners were given about 300 grams of bread and something extra in the shape of about 25 grams of sausage or margarine, or a spoonful of jam or cheese. The food value of supper came to about 900 - 1000 calories

Given such hunger rations most prisoners after a few weeks in the camp began to develop symptoms of exhaustion, which led in consequence to people being reduced to the state of 'Moslems'.

http://en.wikipedia.org/wiki/M...

The work in the quarries - often in unbearable heat or in temperatures as low as -30 C (-22 F)[20] - led to exceptionally high mortality rates.[40][note 6]
The food rations were limited, and during the 1940-1942 period, an average inmate weighed 40 kilograms,[41] roughly 88 pounds.
It is estimated that the average energy content of food rations dropped from about 1,750 calories a day during the 1940-1942 period, to between 1,150 and 1,460 during the next period.
In 1945, the energy content was even lower and did not exceed 600 to 1,000 calories a day; that is less than a third of the energy needed by an average worker in heavy industry.[1]
This led to the starvation of thousands of inmates.

Comment: Re:Compelling, but a mix still better... (Score 1) 377

by denzacar (#48194769) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

There's a big difference between "a suggestion to send an all female crew cause they eat less and have smaller muscles" and "as long as men are around to open doors for them, women can do almost everything a man can".

No. That's the exact same thing. Only phrased differently.

Both those lines define women as weak, small and incapable to perform physical work.
Only difference is that the "men to open doors" line is more direct with the backhandedness, while "eat less small muscles" would be more sinister - cause it does not criticize (in)directly, but "sparks debate".
Like this whole slashdot topic.

Women of the same weight as men have a 5-10% lower basal metabolic rate (and that bmr typically accounts for 60-70% of your total energy expended - source).

Read your source again.

Women in general, have a metabolic rate about 5-10% lower than men even when of the same weight and height. Men generally burn more calories at rest than women because they naturally have more muscle.

Exercise builds muscle.
Have them doing the same muscle-maintaining exercises during their trip and see how men and women of same weight and build fare then.

The whole article only indicates that maybe men were doing more exercise.
Meanwhile, that 1475 calories per day woman was chasing an Auschwitz diet. Which was designed to, combined with hard labor, exterminate people.
If she was not losing weight, only component missing is hard labor.

OR... Bad science. Badly measured or misreported measurements.
Or that woman is beyond petite and more like a midget.
http://www.holocaustresearchpr...
       

Food
Prisoners in the camp received three meals daily - in the morning, at midday and in the evening.
In the morning the prisoners received only a half litre of black coffee or of a herbal brew known as tea. These liquids were generally unsweetened.
The midday meal consisted of one portion of soup measuring about three quarters of a litre, with a value of 350 - 400 calories. The soup was foul tasting and watery, with 'meat' four times a week and the rest with vegetables.
For supper the prisoners were given about 300 grams of bread and something extra in the shape of about 25 grams of sausage or margarine, or a spoonful of jam or cheese. The food value of supper came to about 900 - 1000 calories

Given such hunger rations most prisoners after a few weeks in the camp began to develop symptoms of exhaustion, which led in consequence to people being reduced to the state of 'Moslems'.

Comment: Re:You keep using that word... "basically"... (Score 1) 417

by denzacar (#48194719) Attached to: Soda Pop Damages Your Cells' Telomeres

If you're eating for taste rather than an energy boost or a sugar buzz, fructose has the advantage that less is needed

You eat to satisfy a craving.
Be it taste, sugar buzz, energy boost, feeling happy like the people on tv eating the same food...

You STOP eating when you reach "an energy boost or a sugar buzz".
Trouble is, when it's all mostly for taste... and it's loaded with calories... and there's no "STOP!" signal...

Comment: Re:That's great and all but... (Score 1) 377

by denzacar (#48190677) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

Except both men and women will be forced to exercise and thus spend MORE calories than needed in order to stave off muscle loss due to lower gravity.

Making the whole "women eat less" premise ridiculous if they are forced to pump up and then to try to keep up the calorie burning mass.

Comment: Re:Exercising "roughly the same amount" (Score 1) 377

by denzacar (#48190567) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

If women are eating half a portion and men are losing weight despite eating double portions - that's not BMR.

For a 30 year old woman, 160 cm in height, with a weight of 50 kg, with little to no activity BMR is 1547 calories.
Makes you wonder if that "least metabolically active female [who] expended 1,475 calories per day" was a midget or anorexic.

Comment: Re:Compelling, but a mix still better... (Score 1) 377

by denzacar (#48190433) Attached to: NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew

Power tools. Everything from screwdrivers to come-alongs to chain blocks to robotic arms.

Thing is, none of that provides additional benefit to a all female crew that an all male or mixed crew of humans of similar size would not experience as well.
BUT... it does provide another single point of failure if the only way an astronaut (male or female) is able to lift or haul cargo via some power tool for which the nearest replacement is only available back on Earth.

And the whole premise of the article is a fallacy. The author even points out why, but then ignores it.

so there's no reason to choose larger people for a flight crew when it's brain power you want

During one week, the most metabolically active male burned an average of 3,450 calories per day, while the least metabolically active female expended 1,475 calories per day. It was rare for a woman on crew to burn 2,000 calories in a day and common for male crew members to exceed 3,000.

The data certainly fit with my other observations. At mealtime, the women took smaller portions than the men, who often went back for seconds. One crew member complained how hard it was to maintain his weight, despite all the calories he was taking in.

There's a hint there.
If half of your "crew" is eating half a portion while the other is spending so many calories they are losing weight despite eating more - they are not doing the same work.
You don't lose weight exercising "brain power" alone.

And while all that additional testosterone might come in handy for a quick muscle boost, at the expense of more calories should the crew be all male...
In the long run both male and female astronauts being forced to work their ass off will spend all calories allotted to them and ask for more.

Women are perfectly capable of building muscles and doing hard work.
You don't have to wait for Olympics to find female weight lifters or marathon runners or rock climbers...
But they don't do that by taking "smaller portions".

In fact... the whole premise is borderline insulting.
Coming from a male a suggestion to send an all female crew cause they "eat less" and have smaller muscles would smack of "as long as men are around to open doors for them, women can do almost everything a man can" veiled misogyny.

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