Science and Engineering: Innovation, Research, Education and Economics
Science and Engineering in Sports
Science, engineering, sports and athletics
Recommended posts: Regular Exercise Reduces Fatigue - Excercize and Learning - Sports Engineering
September 25, 2008

The Glove - Engineering Coolness

photo of The Glove - core control

Cool invention helps tired players bounce back

The device, called the Glove and invented by two Stanford biologists, is used by the Niners during games and at practice for players’ health. But its applications are far broader: from treating stroke and heart attack victims to allowing soldiers to remain in the field longer under intense heat.

It’s also a proven athletic performance enhancer - billed as better than steroids without any ill effects.

“We use the Glove primarily for health reasons,” said Dan Garza, the 49ers’ medical director. “But outside of sports, it has potential for a lot of exciting things. This technology is a much more effective way of cooling the core temperature than what we would typically do - misting, fanning, cold towels, fluids.”

The Glove works by cooling the body from inside out, rather than conventional approaches that cool from outside in. The device creates an airtight seal around the wrist, pulls blood into the palm of the hand and cools it before returning it to the heart and to overheated muscles and organs. The palm is the ideal place for rapid cooling because blood flow increases to the hands (and feet and face) as body temperature rises.

“These are natural mammalian radiators,” said Dennis Grahn, who invented the device with Stanford colleague Craig Heller.

Cool, you can buy your own for only $2,000 :-) (The Glove used to be called Core Control) High resolution image. Related: Research on Reducing Hamstring Injuries - The Science of the Football Swerve - Randomization in Sports - posts on science and athletics

August 23, 2008

Engineer Uses Gravity

Now Diving: Sir Isaac Newton

On TV, a diver walks out onto a platform. The camera fixes on him. He waits. He leaps. And then — somehow — the camera stays with him as he plunges. In the instant it takes him to break the water’s surface, the picture suddenly cuts to an underwater shot — and we watch in disbelief as the dive culminates in a burst of bubbles.

How do they do it?

Well, there’s a rope. There’s a pulley. And the rope and the pulley work a contraption made out of a pipe. The whole gizmo is based on the brilliant insight that objects fall at the same rate regardless of mass. A Tuscan by the name of Galileo came up with it about 400 years ago; if he were alive, he’d call it cutting edge. And there’s the beauty of it: It’s sophisticated, yes, but only because it’s simple.

Garrett Brown revolutionized the movie business 38 years ago when he invented the Steadicam, a mechanical arm for cameramen that smooths away the jerkiness of hand-held shots. Much later, he came up with the Skycam, which rides a web of wires above the heads of football players. In between, Mr. Brown, 66 years old, got his one-line brief from NBC: “They wanted a camera,” he says, “that stayed with divers, including going underwater with them.”

The falling camera rides a rail on the inside of the pipe. A glass strip runs along the pipe’s full length; the camera takes its picture through the glass. From the diving platform to the water line, the glass is smoky. Below the line, it’s clear, so the camera need not adjust its exposure as it streaks into underwater darkness.

The pipe is caulked. The camera drops through air. “It doesn’t splash into the water,” Mr. Brown said. “That would look horrible.”

The appropriate use of technology is great to see. Applying knowledge well is a key to good engineering.

Related: Using Cameras Monitoring To Aid Conservation Efforts - How Do Wii Game Controllers Work? - Bigger Impact: 15 to 18 mpg or 50 to 100 mpg? - Awesome Cat Cam

August 16, 2008

Dolphin Kick Gives Swimmers Edge

photo of Michael Phelps diving

Dolphin Kick Gives Swimmers Edge

Rajat Mittal, a professor of mechanical and aerospace engineering at the George Washington University, was studying dolphins for the U.S. Navy five years ago. “We were asked to understand how fish swim so efficiently,” Mittal says, “and it seemed like a natural extension to apply this to human swimming.”

They decided to “essentially compare these swimmers to the dolphin, assuming that the dolphin is the ultimate swimmer,” Mittal says. “And the thing that we found is that Michael [Phelps] is able to use his body in a way that is very, very different from the other athletes, and also seems to be much closer to dolphins than we have seen for any other swimmer.”

The dolphin kick first hit Olympic swimming big-time 20 years ago, after Harvard backstroker David Berkoff figured out something fundamental. “It seemed pretty obvious to me that kicking underwater seemed to be a lot faster than swimming on the surface,” Berkoff says.

That’s because there’s turbulence and air on the surface of the water, and they create resistance. The “Berkoff Blastoff,” as it was called, was used at the start and after turns, with long stretches of that underwater undulating kick.

Follow the link for a video of Michael Phelps demonstrating the technique and more interesting details. Photo by A. Dawson shows Michael Phelps diving into the water at the 2008 U.S. Olympic Swimming Trials.

Related: Science of the High Jump - Sports Engineering - Physicist Swimming Revolution - Swimming Robot Aids Researchers

July 24, 2008

Science Based Triathlete

The Making of a Olympian by Arianne Cohen

In a break with training orthodoxy, Potts and his coach have created a regimen called feedback training in which the training plan is reassessed every 24 hours based on the constant monitoring of three variables: wattage (the power Potts’s body produces), cadence (the tempo of his arm and leg movements) and heart rate. No lap times. No mileage. No grand training schedules planned months in advance. Only raw biological data. “My coach and I talk a lot about engines,” Potts says. “In auto racing, you want to put out the highest amount of power with the least amount of fuel. We do the same thing. My heart and lungs are my engine. The goal is to always increase the efficiency of the engine.”

Every night, Doane analyzes his athlete’s response to the day’s training. He’s looking for the best way to expand Potts’s aerobic capacity, power output and lactate threshold, without overtraining. If Doane sees that Potts’s heartbeat has been sluggish—say, beating 140 times per minute while Potts is trying to produce 410 watts—that means his body is struggling to recover from earlier training, so he’ll dial back the intensity of his workouts. If, on the other hand, his heart rate stays in the sweet spot around 165 while he churns through a series of 360- to 400-watt intervals, that means he’s fully recovered and ready to be pushed again. “We’ve created a feedback loop,” Doane says. In other words, Doane subjects Potts to a careful dose of punishment, and Potts’s body tells Doane, through empirical data, what he needs to do next.

Nice article. As it mentions really almost all Olympic athletes today use a great deal of science in their training.

Related: Baseball Pitch Designed in the Lab - Engineering Sports at MIT - Randomization in Sports

June 21, 2008

Physicist Swimming Revolution

A Revolution That Began With a Kick by Amy Shipley:

The answer, they say, cannot lie solely in the latest high-tech swimsuits introduced amid a swirl of controversy this winter, because the world-record smashing began at last year’s world championships — long before the newest of the newfangled apparel came out.

Swimmers, coaches and scientists say it is impossible to pinpoint one explanation. They cite many contributing factors, ranging from professional training groups that have sprouted across the United States to greater access to underwater cameras and other advanced technology.

But some say the most significant breakthrough has been a revival of a swimming maneuver developed more than 70 years ago by one of the physicists who worked on the atomic bomb.

Though utilized for decades, the underwater dolphin kick had not been fully exploited by the swimming mainstream until Olympic megastar Michael Phelps and a few other stars began polishing it — and crushing other swimmers with it — in recent years.

Very interesting and another example of how good ideas are often ignored for a long time.

The underwater dolphin kick attracted the interest of swimming innovators as early as the 1930s. The late Volney C. Wilson explored its possibilities before diving into later work on nuclear fission and the atomic bomb, according to David Schrader, a research professor at Marquette University who is Wilson’s biographer.

Schrader said Wilson, an alternate on the 1932 Olympic water polo team who studied fish propulsion at a Chicago aquarium, claimed to have shown the kick to Johnny Weissmuller, a training mate at the Illinois Athletic Club. “Weissmuller reproduced it perfectly, but was not impressed by it,” said Schrader in a phone interview, recalling a conversation with Wilson.

One of the first swimmers to turn heads with the underwater dolphin kick was David Berkoff, a Harvard graduate who became known for the “Berkoff Blastoff.” In 1988, Berkoff set several world records in the 100 backstroke by dolphin-kicking for 35 meters underwater at the start of the race.

Which goes to show you that you can gain advantages just by using the information that is available - your own innovation is not the only way to get ahead. Just doing a better job of adapting what others learn to your challenges can be very rewarding.

Related: Randomization in Sports - Baseball Pitch Designed in the Lab - Science of the High Jump

June 15, 2008

RoboCup German Open 2008

Video of humanoid robot football (soccer) competition in German, April 2008. They are a bit slow but it sure looks like this is a fun area to watch the improvement of robot engineering.

Related: RoboCup 2006 - The Science of the Football Swerve - Robo-One Grand Championship - Toyota Robots

April 29, 2008

Engineering Sports at MIT

Making sports an exact science by Shira Springer

“It’s all about finding your passion,” said Vasquez, the group leader and a Material Science and Engineering major. “All the guys on the [project] team love sports. It’s more fun than what you typically think of with an MIT research project.

“There are very few sports companies that put value in good engineering, in terms of projects that make engineering sense rather than just marketing sense. When you get to see how your research can actually be used, it’s pretty cool.”

The MIT Sports Innovation program, though, was designed to give undergraduates hands-on research experience away from textbooks and classrooms. Working in a Building 17 laboratory cluttered with experiments, where the hum of the wind tunnel can make conversation difficult, the undergraduates brainstorm and build different components of the test setup.

Inside the laboratory and Aero/Astro hangar, the MIT baseball research project looks like a combination of shop class and horror flick: Power tools, quick-drying cement, PVC pipe, handsaws, and mannequin parts are scattered around.

Related: Baseball Pitch Designed in the Lab - Randomization in Sports - The Science of the Football Swerve - Sports Engineering at MIT (2006)

March 22, 2008

Scientific American Frontiers Webcasts

All shows of the PBS TV show, Scientific American Frontiers are available online. The shows feature Alan Alda exploring a wide range of scientific ideas. Specific information for teachers if provided for each show. Shows include:

  • Going Deep - “In 1977, scientists aboard Alvin were exploring the Galapagos Rift in the Pacific Ocean when they made one of the most important discoveries in modern biology. Hydrothermal vents are underwater volcanoes erupting magma-heated, mineral-rich water out of cracks on the seafloor thousands of feet beneath the surface. Despite the enormous pressure and total darkness, the vents were found to support an astonishing array of animal life.”
  • The Dark Side of the Universe - Dark matter, dark energy and the universe.
  • Natural Born Robots - “The next generation of robots swim like fish, play soccer and even experience emotions.”
  • Science and Sports - “Science enables people to run quicker, climb higher, hit farther, and sail faster in this sports special.”

Related: BBC In Our Time Science Podcast Archive - Curious Cat Science Webcast Directory - Online Science Resources for Teachers - UC-Berkeley Course Videos Online - ScienceLive video archive from Cambridge University

March 17, 2008

NCAA Basketball Challenge 2008

Once again I have created a group on the ESPN NCAA Basketball Tournament Challenge for curiouscat college basketball fans. To participate, go to the curiouscat ESPN group and make your picks.

This year we also have a second challenge, using sportsline, that rewards picking upsets. So those that enjoy the tournament please join the fun. The password for this one is cat

Go Badgers and Go Davidson,

March 2, 2008

Exercise to Reduce Fatigue

Low-Intensity Exercise Edges Out Fatigue — Without Requiring Lots of Sweat

If fatigue hounds your days, a little exercise may shoo it away without leaving you drenched with sweat. So say University of Georgia researchers. In a new study, they report that healthy young adults who say they’re tired all the time got an energy boost from a low-intensity workout plan.

Here’s all it took: three sessions per week of pedaling a stationary bicycle at a mild pace. They didn’t need to train every day, and they didn’t push themselves too far — just far enough to shake their fatigue

As I have said before, I have found exercise reduces fatigue myself.

Related: Treadmill Desks - Another Paper Questions Scientific Paper Accuracy - Regular Aerobic Exercise for a Faster Brain

February 6, 2008

Nature Recreation Declining

Glacier National Park photo by John Hunter

Photo looking north across Lake McDonald from my Village Inn balcony in Glacier National Park, by John Hunter.

Do people still care about nature

Nature recreation worldwide — from camping, hunting and fishing to park visitation — has declined sharply since the 1980s

The study examines data from the United States, Japan and Spain on everything from backpacking to duck hunting…that correlated a decline in visits to U.S. National Parks with an increase in television, video game and Internet use.

The decline in some nature use seems to be accelerating, such as U.S. state park and national forest visits, as well as fishing. Others show a more steady decline, such as U.S. and Japanese national park visits and U.S. Bureau of Public Lands visits. Most reliable long-term per capita visitation measures of nature recreation peaked between 1981 and 1991. They’ve declined about 1.2 percent per year since then, and have declined a total of between 18 percent and 25 percent.

Other research shows that the time children spend in nature — particularly the activities we looked at in this study - determines their environmental awareness as adults. We recently wrote a review paper looking at this phenomenon as well as at the effects of videophilia on childhood development. These effects are substantial and include obesity, attentional disorders, lack of socialization and poor academic performance.

I must say I am surprised by this. My visits to national parks have led me to believe the attendance was increasing but that seems to be wrong. The National Parks Service has a simple web tool to view visits to US national parks by year. Go visit great parks, here are some photos from my trips: Grand Teton National Park, Rocky Mountain National Park, Shenandoah National Park and Grand Canyon National Park.

Related: Regular Exercise Reduces Fatigue - Monarch Butterfly Migration - $500 Million to Reduce Childhood Obesity in USA - Science Opportunities for Students

December 11, 2007

Randomization in Sports

Here is my comment on, The Sun Devil Suggestion System:

My father was a professor (of statistics, chemical engineering… at the University of Wisconsin. I remember one time he wanted the football coach to randomly select the play for certain situations. They would have say 4 plays for 3rd and 3. Instead of making the decision of which to run he thought they should just randomly pick from those 4. The idea was that would eliminate the coaches’ bias which the defense could predict and plan for. The theory was being more unpredictable would lead to more success. They didn’t go for it.

Here is a post on the Freakonomics blog today, Why Don’t Sports Teams Use Randomization? by Ian Ayres:

Levitt and others have tested the degree to which professional tennis and soccer players are successful at playing randomized strategies. But it remains a mystery to me why coaches don’t have random number generators (any laptop would do) to help them pick the next pitch in baseball, or the next play they will call in football.

He then goes on to discuss an equally interesting but different topic faulting coaches for failing to take enough risk in football - in going for a first down on fourth down. That supports my gut instincts. The “conventional wisdom” seems mainly about not “seeming stupid” not the best long term results.

Related: Testing Mixed-Strategy Equilibria When Players Are Heterogeneous: The Case of Penalty Kicks in Soccer - Minimax Play at Wimbledon - Statistics for Experimenters - sports related posts

October 20, 2007

Deer Rescued 1.5 miles Offshore

Bambi Caught 1.5 miles OFFSHORE

They saw what appeared to be a seal with its snout out of the water, but they didn’t think any seals were around their fishing grounds and they kept watching. Soon they realized it was a deer trying desperately to keep afloat - and obviously losing the battle. Fearing the whitetail would get snagged in their lines they cranked in their rigs. Then the deer headed straight for the boat possibly thinking it was a spit of land.

But as it got closer and saw the two fishermen aboard, it had second thoughts. With its nose barely out of the water, it appeared to have been swimming all night, said Campbell. “Since the fish weren’t biting, we thought we’d give it a hand. Bo grew up around cows, was really handy with a bow line and lasooed the deer on the first attempt.”

to the closest beach, Kent Point, where I beached the boat and we carefully unloaded our catch on the sand. We untied him and jumped back.

“Too weak to stand, he just sat there quivering. We picked him up again and put his feet underneath him, but he still couldn’t walk or stand. We left him sitting there looking at us. Before we left, I looked him in the eye and said ‘See you on opening day; payback time.’

See link for photos. Related:The Cat and a Black Bear - Polar Bear Playing with Wolves - Water Buffaloes, Lions and Crocodiles Oh My - The Engineer That Made Your Cat a Photographer

September 1, 2007

Richard Palmer on Engineering and Innovation

Q and A: Richard Palmer interview

Palmer: d3o is a soft, flexible material that combines properties associated with liquids and enables them in solids. Normally the study of mechanics of materials in solids is entirely different to the study of fluids and what I have done is combine the two. The fluid properties that are incorporated in d3o allow it to be stretchable, soft, to flow and to feel comfortable. But in an impact, that fluid turns into an elastomer and everything locks together to dissipate, spread and absorb the impact.

CNN: Can you go into the applications of that?
Palmer:
You can use d3o in sportswear where you want freedom of movement and dexterity but also want some impact absorption. It’s in footwear, headwear, gloves, clothing and boots.

It means people can get on with their sport without being confounded by pieces of bulky, rigid plastic and cumbersome, stiff foams. It’s the difference between Robocop and Spiderman. Robocop is built with protection around him like a shield; d3o is more like Spiderman, where the protection and the athlete are integrated together. It’s a discrete, small and totally unrestricted layer of protection in the areas where you need it that wouldn’t previously have been possible.

CNN: What advice would you give someone who wanted to become an innovator?
Palmer:
Open your eyes to both creative and analytical thinking. Scientists aren’t just boffins; creatives aren’t just mad lunatics. There’s a huge opportunity to dovetail the two. And follow something you believe in.

Related: Entrepreneurial Engineers - What a Computer Game Programmer Needs to Know - Inventor for Hire

August 21, 2007

Regular Aerobic Exercise for a Faster Brain

Lobes of Steel

Scientists have suspected for decades that exercise, particularly regular aerobic exercise, can affect the brain. But they could only speculate as to how. Now an expanding body of research shows that exercise can improve the performance of the brain by boosting memory and cognitive processing speed. Exercise can, in fact, create a stronger, faster brain.

But something else happened as a result of all those workouts: blood flowed at a much higher volume to a part of the brain responsible for neurogenesis. Functional M.R.I.’s showed that a portion of each person’s hippocampus received almost twice the blood volume as it did before. Scientists suspect that the blood pumping into that part of the brain was helping to produce fresh neurons.

The hippocampus plays a large role in how mammals create and process memories; it also plays a role in cognition. If your hippocampus is damaged, you most likely have trouble learning facts and forming new memories. Age plays a factor, too. As you get older, your brain gets smaller, and one of the areas most prone to this shrinkage is the hippocampus. (This can start depressingly early, in your 30’s.) Many neurologists believe that the loss of neurons in the hippocampus may be a primary cause of the cognitive decay associated with aging.

Related: Feed your Newborn Neurons - Can Brain Exercises Prevent Mental Decline? - Excercize and Learning - No Sleep, No New Brain Cells

May 15, 2007

Treadmill Desks

Treadmill desks cut obesity

The participants were able to use the computer while walking without falling or injuring themselves. In fact, they enjoyed it so much, they wanted to keep the walking desks even after the study ended.

Findlay got the idea from Mayo Clinic researcher James Levin, a co-author of the BJSM study who has been touting the benefits of his walking desk for years.

I must admit I like to think this idea would be work, but am a bit skeptical. I did switch to a job a few years back where I really just sat at my desk all day and would get tired. Previously I had walked around a fair amount going to see people… Someone suggested that getting some activity at lunch would help me feel more energized. It worked. If nothing else walk around at lunch.

Well, most of us in the corporate world feel like rats on a treadmill, so we might as well make the figurative literal…

Great comment on the post. Many of the other comments state categorically this cannot work. I wonder why they think they know what will work for everyone? I am skeptical but that is not the same thing as being sure this can’t work - I think being open to testing out ideas (especially ones that already have studies that claim they work) is a good thing. I would love to try it out myself (though given my skepticism I wouldn’t want to pay up to buy the equipment :-) ).

Related: Regular Exercise Reduces Fatigue - Study, The energy expenditure of using a “walk-and-work” desk for office workers with obesity

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