Showing posts with label PhD. Show all posts
Showing posts with label PhD. Show all posts

Wednesday, December 7, 2011

Rx for Pain: Swear, Loud and Often

"S - - T!!!" Admit it, letting loose with an expletive somehow makes you feel better after you accidentally slice your finger or stub your toe. Now that research has confirmed that cursing does indeed reduce the sensation of pain, perhaps we can sometimes give ourselves permission to yell bad words even louder, without worrying about what anyone will think. 

Swear When It Hurts

Richard Stephens, PhD, a lecturer in psychology and the director of the master’s degree program in psychological research methods at Keele University in Staffordshire, England, conducted a study exploring how cursing provides pain relief. It was published in the journal NeuroReport. His study involved a mixed-gender group of university students who were asked to repeat either a curse word or a neutral control word while their hands were submerged in icy water. Researchers found that swearing enabled participants to withstand the uncomfortably icy water for significantly longer. It brought about a measurable reduction in the perception of pain (calibrated with a pain perception questionnaire) and significantly increased heart rate (measured with an electronic heart-rate monitor). 

Dr. Stephens told me that participants were asked to repeat their assigned word over and over again at a consistent pace. "By using the same word over and over, we were attempting to keep conditions consistent," he said. "We looked specifically at pain tolerance and perception. When the study participants swore while experiencing the pain stimulus, they found the cold water less painful." 

Ladies First... 

Women, in particular, experienced a greater drop in pain perception when they were swearing. "We know that swearing evokes certain emotional responses, and that, in general, men tend to swear more than women," Dr. Stephens explained. "We speculated that in people who swear frequently, the emotional response erodes, making it a less effective mechanism in reducing the perception of pain or the ability to tolerate it."
Dr. Stephens also found that swearing was less effective in male participants who had been identified as being predisposed toward catastrophizing pain. For example, he said that if a person is prone to thinking that a small cut on his hand is likely to result in a nasty infection or some other catastrophic outcome, swearing will be less effective as a coping mechanism.
I may not feel particularly proud of myself the next time I bump my head and blurt out a naughty word -- but at least I know there’s science to justify my reaction.

Source(s):

Richard Stephens, PhD, is a lecturer in psychology and the director of the master’s degree program in psychological research methods at Keele University in Staffordshire, England.

Wednesday, January 19, 2011

The Extreme Dangers of Sitting

James A. Levine, MD, PhD

Mayo Clinic


Being a couch potato has long been known to threaten a person’s health. But now researchers are discovering that it’s much more dangerous than previously thought. 

Troubling statistic: Americans spend more than half their waking hours sitting -- primarily watching TV, driving and working at a desk. 

Important new finding: When Australian researchers recently tracked 8,800 men and women (average age 53) for about six years, they found that for every hour of daily TV viewing, risk for death due to cardiovascular disease increased by 18%. For those who watched TV four or more hours daily, risk of dying from cardiovascular disease was 80% higher than for those who reported watching fewer than two hours daily. 

Most surprising: A similar Canadian study of about 17,000 adults found that even among people who are physically fit and have a normal body weight, prolonged sitting, for any reason, was associated with increased health risks, suggesting that sitting for long periods may cancel out some of the health benefits of regular exercise.

THE PROBLEM WITH SITTING

Our bodies are programmed to move. When we spend most of our waking hours sitting, our health suffers in various ways. Examples...

Sluggish central nervous system. Sitting causes your central nervous system to slow down, leading to fatigue. Three weekly sessions of low-intensity exercise, such as walking at a leisurely pace, which stimulates the central nervous system, reduced fatigue by 65% after six weeks, according to one study.

Weakened muscles. Sitting weakens your muscles (especially those that support posture and are used to walk) and stiffens joints, leading to a hunched posture and increased risk for back and joint pain.

Poor fat burning. The walls of your capillaries are lined with lipoprotein lipase, an enzyme that breaks down certain fats in the bloodstream. Sit for a few hours, and these enzymes start switching off. Sit all day, and their activity drops by 50%.

Increased heart risks. Sitting for long periods, even in people with healthy body weight, will have negative effects on blood sugar and blood fat levels, which may contribute to diabetes and heart disease.

THE "NEAT" SOLUTION

Fortunately, the dangers of prolonged sitting can be countered by engaging in simple, low-intensity movement throughout the day. 

Thirty minutes or more of cardiovascular exercise (such as brisk walking, swimming or biking) several days per week is known to help promote good overall health. However, research at the Mayo Clinic has shown that the average American’s biggest health problem is a deficit in activity when formal exercise is not being performed. 

Non-exercise activity thermogenesis (NEAT) is the term that is used for the energy that is expended (calories burned) doing everyday activities. 

While in previous generations our work and recreational activities involved regularly standing up and moving the body’s muscles, today’s world of cars, desk jobs, TVs and computers has reduced our daily NEAT dramatically. 

The solution is to add small amounts of non-exercise-related activity into your daily routine. For example, simply standing up triples your energy expenditure compared with sitting. And since a slow (1 mile per hour) walk triggers more than half the metabolic activity of a brisk (3 mph) walk, a leisurely hour-long stroll burns more calories than an intense 30-minute power walk. 

Interesting: We burn just five calories an hour while sitting and 15 while standing.

TO COUNTERACT SITTING AT HOME

With a little forethought, it’s possible to significantly raise your activity level without stepping foot in a gym. Not surprisingly, watching TV and long hours at the computer are among the biggest traps when you’re at home. To develop your own NEAT lifestyle in your home... 

Stand up and walk around. Do this every time an advertisement comes on the TV. 

Keep a stability ball handy. Since sitting on this kind of large, inflatable ball requires you to shift slightly from side to side to keep your balance, it engages more muscles (especially those in your abdomen and back) than sitting in a regular chair does. Strong abdominal muscles help fight back pain and enhance stability and balance. Stability ball chairs are available from Gaiam (877-989-6321, www.Gaiam.com, $120)... and Isokinetics, Inc. (866-263-0674,www.IsokineticsInc.com, $65). 

Place exercise equipment near your TV. Good choices include a treadmill, stationary bike and/or elliptical trainer. If you watch TV, choose a half-hour show every day and begin using the equipment as the theme music comes on. Continue until the show ends. 

Another option: Try a "mini stepper," a small device with two footpads that lets you step in place against resistance. These machines can be tucked away when not in use. Mini steppers are widely available from such companies as Stamina Products, Inc. (800-375-7520, www.StaminaProducts.com, $40 to $170)... and NordicTrack (www.NordicTrack.com, 888-308-9616, $120). 

Put your computer on an elevated surface, such as a shelf or stand.This way, you can stand while typing or surfing the Web. 

Choose action-oriented video games. If you play video games, opt for an active game (including Wii, which allows you to mimic motions used in sports such as tennis) instead of more sedentary games. 

Engage in "active intimacy." Catch up with your spouse or other family members or friends by talking with them while you stroll around the neighborhood together.

TO COUNTERACT SITTING AT WORK

For a NEAT lifestyle at work... 

Stand up when you answer the phone. If possible, pace near your desk for the duration of the call. 

Schedule "walking meetings." This is ideal when you need to meet with just one or two people and don’t need to take a lot of notes. 

Cut back on phone calls and e-mails to coworkers. When you need to speak to a coworker, walk to his/her work space. Besides getting you out of your chair, this face-to-face communication style has been shown to improve relationships. 

Follow the 10-minute rule. Whenever you’re working at a computer, get up for 10 minutes every hour to stretch your back and legs. Use this time to perform tasks that can be done while standing, such as making phone calls. 

Take the stairs. Avoid the elevator when going to and from your office floor. 

Park your car a distance (half a mile, for example) from your office. If you take mass transit, get off the bus or subway one or two stops before your destination. 

Take a midday walk. Use half your lunch hour for a stroll. 

Use a standing desk. It allows you to stand while working. Ernest Hemingway used such a desk. They are available from such companies as Ergo Desk (800-822-3746, www.ErgoDesk.com)... and Anthro (800-325-3841,www.Anthro.com). 
Cost: About $240 to more than $2,000. 

Even better: Add a treadmill for less than $1,000 to your work space to create a "walking desk." Don’t laugh -- many people who have done this (using it for four to 12 hours daily) have found that their productivity and concentration have improved along with their health.

Bottom Line/Health interviewed James A. Levine, MD, PhD, director of the Non-Exercise Activity Thermogenesis (NEAT) Laboratory at the Mayo Clinic in Rochester, Minnesota. He is coauthor of Move a Little, Lose a Lot (Crown).

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Thursday, April 9, 2009

Use Your Mood to Improve the World

Good health can be both the cause and consequence of being happy. That's why two pioneering scientists wanted to see if they could actually measure how happiness works in groups. What they discovered took everyone by happy surprise -- the happiness of others, even those you don't know, has a direct influence on your happiness.

The coauthor of this novel study on happiness, James Fowler, PhD, told me how the research was done. First his team combed through the records of 5,000 participants in the Framingham Heart Study, many of whom had identified one another as spouses, friends or neighbors. His team established a happiness baseline for these participants by checking their periodic answers to questions regarding their happiness over the past 20 years (1983 to 2003). Then they used a sophisticated statistical analysis tool to create a map of social connections among the initial 5,000 and other participants within the Framingham study. It showed how one person's happiness rippled like a network, creating a cascade of happiness that increased the likelihood of others being happy too.

They discovered that there were various degrees of influence depending on the degree of social connection and that it was quite predictable. For example, within your social network, the happiness of someone with whom you have frequent and regular personal contact, called an immediate social contact (for instance, your spouse or closest nearby friend), increases the likelihood of your happiness by an average of 15%. The happiness of a second-degree contact (for instance, your closest friend's spouse) increases your chances for happiness by 10%, while the happiness of a third-degree contact (your closest friend's friend's friend) increases it by 6%. In other words, your happiness is directly influenced by strangers.

MORE SPECIFIC LEARNINGS FROM THE HAPPINESS STUDY

  • Proximity is key. The closer your happy friends and family live to you, the greater the probability that their happiness will affect you. For example, the happiness of your next door neighbor is more influential than the happiness of a neighbor who lives down the street.
  • More social connections adds to your happiness. The bigger your social network of nearby happy friends and family, the greater the likelihood of your happiness.
  • Unhappy people cluster together in unhappy networks. As the saying goes, misery loves company.
  • Whether or not you were happy in the past and whether your social contacts are happy are more important predictors of happiness than your income, gender or education.
  • Happiness is more powerful than unhappiness. The happiness of a friend increases the probability of your happiness by 9%... while his unhappiness decreases the chances of your happiness by only 7%.
  • It's not fleeting. The impact of another's happiness on your happiness lasts about a year, on average, before fading.

HAPPINESS 2.0: ONLINE SOCIAL NETWORKS

Dr. Fowler and his coauthor Nicholas Christakis, MD, PhD, MPH, are now looking at the question of whether happiness spreads the same way via the Internet, specifically using the Facebook network. They assumed that those who posted smiling pictures of themselves with smiling friends were happy. Since Facebook automatically tags or uploads your photos to those registered as your "friends," they were able to trace the paths of these happy pictures. They found that smiling friends had photos of other smiling friends and so on and so on. (People who didn't smile in their photos, didn't have photos with friends who smiled, who in turn also didn't have photos of smiling friends.) Again -- happiness begets happiness and the same goes for unhappiness. Next they'll study how contagious online happiness turns out to be.

REACH OUT AND TOUCH SOMEONE

Dr. Fowler himself has been moved by his findings. "I think our study shows that the best thing we can do for ourselves is to connect to friends and family," says Dr. Fowler. "I have been personally affected by the study -- I have now seen the evidence that my happiness potentially ripples out and touches the lives of dozens or even hundreds of other people. In this very challenging time, creating a ripple of happiness can result in a tidal wave of change."

Source(s):

James H. Fowler, PhD, professor of political science, University of California-San Diego.


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