Active, healthy medical students are more likely to prescribe physical activity to patients, according to research presented at a meeting of the American College of Sports Medicine.
A research team assessed objective markers of cardiometabolic health, including cardiorespiratory fitness and attitudes on physical activity counseling, in 577 freshman medical students in Colombia from 2005 to 2010. Students’ health and fitness were measured by waist circumference, body mass index, fasting glucose levels and lipid profiles, in addition to the 20-meter shuttle run test.
Attitudes toward physical activity counseling were gauged through students’ answers to “How relevant do you think it will be in your future medical practice to counsel your patients on physical activity?” and “I will have the ability to counsel my patients more credibly and effectively if I am physically active.” Read more »
*This blog post was originally published at ACP Internist*
This post was contributed by guest blogger, Edward Ahn, M.D.
The head coach of a Division 1 champion women’s sports team brought her baby daughter in to me for evaluation of her flat head at the recommendation of her pediatrician.
While I was examining her baby, I started to say, “Well, I’ll tell you what she has —
She quickly interrupted, “Is it bad?”
I looked up to see fear written on this tough coach’s face. I was struck by how this benign condition can cause apprehension in so many parents.
Often, pediatric neurosurgeons like me or plastic surgeons are asked to assess babies with a flat head, also known as positional plagiocephaly. Usually, parents have developed a fair amount of anxiety, often with the underlying fear that their baby will need surgery or the brain will grow abnormally. These fears are not warranted. Read more »
I’m a physician trained in sports medicine, and a chronic back pain sufferer. I first injured my back in 2001 when lifting a heavy bag and trying to sling it onto my shoulder. The pain was so severe that I couldn’t get off the floor for three days. I eventually ended up in the ER with an “unremarkable” MRI. The cause of my pain was never explained — all I knew is that I hadn’t herniated any disks.
Years later my back pain still flares up occasionally, and I’ve never really understood how to prevent it or treat it effectively. This has been very embarrassing for me, since I’m supposed to be an expert in this field. But today I finally got some insight into the real cause of my pain — not from a physician or physical therapist, but from a yoga instructor. Read more »
It has been proven than there is tremendous variation in the practice of medicine across the United States. The Dartmouth data (Wennberg et al) has documented the differences in how medical resources are used and how different physicians practice medicine, depending upon where they live. The Dartmouth studies are mainly focused on cost and outcomes and make the case that improved quality is often inversely related to the cost of care. More (expensive) care is not necessarily better care.
Now that I am recovering from a total joint replacement, I am amazed to see the differences in how physicians, doing the same surgery, treat the patient. Total knee replacement (TKA) is one of the most common orthopedic procedures done today. Despite this, the patient cannot expect the same post op care. Read more »
For this week’s CBS Doc Dot Com segment, I thought I’d cover something completely non-controversial: what can weekend warriors learn from elite athletes? But I’m starting to believe that in this era of evidence-based medicine, nothing may be truly knowable. I went to the studios of the world famous Ballet Hispanico in New York City and spoke to athletic trainer Megan Richardson. She took me through the motions, emphasizing the importance of warming up and stretching in preventing injury. It sounded good and it felt good. But proving in the medical literature that it’s effective is another thing. An online search quickly produced multiple conflicting reports and advice: stretching definitely works, stretching definitely doesn’t work; stretching only works if you do it my way. Click here for a sampling:
My friend and CBS colleague, Richard Schlesinger, offered his solution. ”I get around it by neither stretching nor exercising.” Had I listened to Richard, my blog post would have ended right here. But I figured I needed at least one more paragraph so I contacted a true expert on the subject, Ian Shrier MD, PhD, a specialist in sports medicine and Associate Professor at McGill University. He has a PhD in physiology and is Past-President, Canadian Academy of Sport Medicine. He’s not a huge fan of stretching right before exercise.
“First, the stretching, whether with or without warmup, does not improve performance. It makes you run slower, jump not as high, and makes you weaker.” And “stretching definitely can hurt people if you overstretch; people do it all the time if they force the stretch.”
He added, “I don’t think it hurts you in general if you do it properly but it doesn’t prevent injury.” He’s more supportive of stretching at other times, including after exercise, saying, “Regular stretching at other times is beneficial. It makes you stronger, jump higher, etc, and there are three studies suggesting it reduces injuries as well, although the results were only significant in one.” He adds that “stretching is analgesic; it allows you to put your muscle through a wider range of motion without feeling tension. And that may be why ballerinas say that stretching helps them.” Dr. Shrier spells out his take on the subject in detail in a chapter called
“Does stretching help prevent injuries?”
For me, Dr. Shrier’s most interesting advice, especially for weekend warriors, was about the importance of warming up. He explained that muscles need energy to function properly. Energy is mainly produced inside of cells in structures called mitochondria. When you are resting, your mitochondria power down. During exercise, it takes awhile for the cell to rev up the enzymes needed for breaking down fat and carbohydrates for fuel and for using oxygen to make energy from that fuel. If you start running at full speed without warming up, your body will produce lactic acid. Lactic acid can impair muscle function for awhile, preventing you from sprinting efficiently at the end of the race.
So Dr. Shrier suggests gradually warming up. He estimated it takes about 3 to 5 minutes to efficiently go from one level of exercise to the next – for example, going from rest to a ten minute mile or going from a ten minute mile to a seven minute mile. If you go for a jog, “you walk, then jog slowly, and then pick it up. Elite marathoners might go for a fifteen to twenty minute jog before they run a marathon. That allows them to run faster at the beginning of the race. They run the second half of the marathon faster than the first.”
In summary – and I suspect that I am the first person today to tell you this – don’t outpace your mitochondria.
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I’m a physician trained in sports medicine, and a chronic back pain sufferer. I 
