Luis Guerrero

15 Flips | 3 Magazines | 2 Likes | 11 Following | 3 Followers | @luisalbertogr | Keep up with Luis Guerrero on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Luis Guerrero”

Agua con vitaminas: ¿te conviene o no?

<i>El agua y las vitaminas son vitales para la salud y hasta para la vida misma, por lo que combinarlas en una misma botella parece una idea perfecta.</i> …

Hip Weakness and Knee Pain

Which is cause and which is effect?<p>If you've got knee pain, you might need to strengthen your hips. That's an increasingly common prescription these days, thanks to a bunch of research over the past decade or so linking conditions like runner's knee (also known as patellofemoral pain, or PFP) and …

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Why Do YOU Jog?

Happy (belated) National Jogging Day! Be careful!<p>Well, it's National Running Day again. And, again, I'm at a loss. I have absolutely nothing new to say about this special day. Especially after last year's column, which I think was sort of the final word on the matter.<p>But! Did you know there's …

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Caffeine and Carbs

Mixing two performance-boosters gives unexpected results.<p>Caffeine and carbohydrates are two of the most reliable performance-boosters out there. So what happens when you combine them? That's what researchers in Taiwan asked in a study just published in the <i>European Journal of Applied Physiology</i> -- …

Interval Training and Trolleyology

Is it safe for 40-year-olds to exercise hard?<p>There's a sub-branch of philosophy called "trolleyology" that deals with moral choices, named for a thought experiment devised in 1967:<p><i>You are walking near a trolley-car track when you notice five people tied to it in a row. The next instant, you see a</i> …

Age and Oxygen Delivery

How quickly can you send oxygen to your muscles?<p>A couple of interesting graphs from a Western University study just published in <i>Medicine & Science in Sports & Exercise</i>. They compared volunteers from three different age groups: young (average age 24), middle-aged (52), and older (66); in each age …

Effect May Exist, Study Says

Something we thought was true could definitely be true. Or not.<p>Making a certain change may slightly reduce your risk for something, a study suggests.<p>The study, out of some university somewhere, followed a certain number of subjects over a period of time. Half the subjects did one thing; the other …

Should You Stretch Before Running?

Stretching results in slower starts, greater effort.<p>A few weeks ago, I took the "anti" side in a lighthearted <i>RW</i> debate about post-run stretching. Turns out stretching is still a hot-button issue that gets people fired up! So with that in mind, here's an interesting new study from researchers in …

Where To Focus Your Attention While Running

New research suggests it's better to monitor your feelings than your form.<p>In 1977 Bill Morgan and Michael Pollock wrote one of the first and most influential papers in sports psychology. They interviewed a group of elite distance runners, asking the runners what they thought about in the heat of …

Exercise During Pregnancy Benefits Mother and Child

Regular exercise leads to adequate gestational weight gain, lower risk of excessive gain.<p>Pretty much everyone knows about the importance of good nutrition and adequate weight gain during pregnancy. Less is known about the potential health risks, to both mother and child, of excessive weight gain. …

Exercise & Weight Loss: As Good For Women As For Men

Women and men lose equivalent amounts of weight and body fat through exercise.<p>The popular literature sometimes tells women that weight-loss is harder for them, especially exercise-induced weight loss. Different reasons are offered: women’s hormones are different, a woman's body “defends” her body …

9 MORE Secrets Runners Won't Tell You

Number 8 will leave you reeling!<p>1. "When I run past your house, I totally peek in the windows!"<p>2. "This one time, when I was working the swing shift, I fell asleep driving home and didn't wake up till I was in my driveway."<p>3. "I have no idea how to pronounce <i>Keflezighi</i>."<p>4. "I sniff my dirty socks …

How Much Exercise Makes You Smartest?

Exercise makes you sharper, but how much is best?<p>You've got a big test or an important meeting coming up, and you want to be at your sharpest. You've heard over and over that even a single bout of exercise can heighten your cognitive abilities. So what exercise, exactly, should you do before the …

What Causes Muscle Pain During Hard Exercise?

Researchers reproduce muscle burn with injection of metabolites.<p>I've raced pretty much every distance between 100 meters and the marathon, and for me the most consistently painful was the 800 meters. Why? That incredible burning sensation in the muscles that we thought of as "going lactic," when …

¿Por qué los dibujos del corazón de Leonardo da Vinci siguen siendo relevantes?

<b>Cuando Leonardo da Vinci diseccionó el corazón de un hombre de 100 años que había muerto recientemente, produjo la primera descripción que se conoce de una enfermedad de las arterias coronarias.</b><p>Más de 500 años después, esta enfermedad es una de las causas más comunes de muerte en el mundo …