Sports and Energy Drinks Responsible for Irreversible Damage to Teeth Though energy drinks found twice as likely to destroy enamel than sports drinks Featured in For the Media - News Releases, May 2012 Posted on Tuesday, May 01, 2012

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CHICAGO (May 1, 2012)—A recent study published in the May/June 2012 issue of General Dentistry, the peer-reviewed clinical journal of the Academy of General Dentistry, found that an alarming increase in the consumption of sports and energy drinks, especially among adolescents, is causing irreversible damage to teeth—specifically, the high acidity levels in the drinks erode tooth enamel, the glossy outer layer of the tooth.   “Young adults consume these drinks assuming that they will improve their sports performance and energy levels and that they are ‘better’ for them than soda,” says Poonam Jain, BDS, MS, MPH, lead author of the study. “Most of these patients are shocked to learn that these drinks are essentially bathing their teeth with acid.”   Researchers examined the acidity levels in 13 sports drinks and nine energy drinks. They found that the acidity levels can vary between brands of beverages and flavors of the same brand. To test the effect of the acidity levels, the researchers immersed samples of human tooth enamel in each beverage for 15 minutes, followed by immersion in artificial saliva for two hours. This cycle was repeated four times a day for five days, and the samples were stored in fresh artificial saliva at all other times.   “This type of testing simulates the same exposure that a large proportion of American teens and young adults are subjecting their teeth to on a regular basis when they drink one of these beverages every few hours,” says Dr. Jain.   The researchers found that damage to enamel was evident after only five days of exposure to sports or energy drinks, although energy drinks showed a significantly greater potential to damage teeth than sports drinks. In fact, the authors found that energy drinks caused twice as much damage to teeth as sports drinks.   With a reported 30 to 50 percent of U.S. teens consuming energy drinks, and as many as 62 percent consuming at least one sports drink per day, it is important to educate parents and young adults about the downside of these drinks. Damage caused to tooth enamel is irreversible, and without the protection of enamel, teeth become overly sensitive, prone to cavities, and more likely to decay.   “Teens regularly come into my office with these types of symptoms, but they don’t know why,” says AGD spokesperson Jennifer Bone, DDS, MAGD. “We review their diet and snacking habits and then we discuss their consumption of these beverages. They don’t realize that something as seemingly harmless as a sports or energy drink can do a lot of damage to their teeth.”   Dr. Bone recommends that her patients minimize their intake of sports and energy drinks. She also advises them to chew sugar-free gum or rinse the mouth with water following consumption of the drinks. “Both tactics increase saliva flow, which naturally helps to return the acidity levels in the mouth to normal,” she says.   Also, patients should wait at least an hour to brush their teeth after consuming sports and energy drinks. Otherwise, says Dr. Bone, they will be spreading acid onto the tooth surfaces, increasing the erosive action.

Once again , new study supports what I have always advocated an active warmup like drills or running ~5 minutes at 60% effort prior to a workout or run. If you stretch, try after your run.

 Journal of Athletic Training 2012:47(1):5-14
© by the National Athletic Trainers' Association, Inc
www.nata.orgljat
original researCh.
Acute Lower Extremity Running Kinematics
After a Hamstring Stretch
Autumn L. Davis Hammonds, MS, ATC*; Kevin G. Laudner, PhD, ATCt;
Steve McCaw, PhDt; Todd A. McLoda, PhD, ATCt
*Austin Peay State University, Clarksville, TN; tillinois State University, Normal
Context: Limited passive hamstring flexibility might affect
kinematics, performance, and injury risk during running. Preactivity
static straight-leg raise stretching often is used to gain
passive hamstring flexibility.
Objective: To investigate the acute effects of a single session
of passive hamstring stretching on pelvic, hip, and knee
kinematics during the swing phase of running.
Design: Randomized controlled clinical trial.
Setting: Biomechanics research laboratory.
Patients or Other Participants: Thirty-four male (age =
21.2 ± 1.4 years) and female (age = 21.3 ± 2.0 years) recreational
athletes.
Intervention(s): Participants performed treadmill running
pretests and posttests at 70% of their age-predicted maximum
heart rate. Pelvis, hip, and knee joint angles during the swing
phase of 5 consecutive gait cycles were collected using a motion
analysis system. Right and left hamstrings of the intervention
group participants were passively stretched 3 times for 30
seconds in random order immediately after the pretest. Control
group participants performed no stretching or movement between
running sessions.
Main Outcome Measure(s): Six 2-way analyses of variance
to determine joint angle differences between groups at maximum
hip flexion and maximum knee extension with an a level
of .008.
Results: Flexibility increased between pretest and posttest
in all participants (F1,30 = 80.61, P< .001). Anterior pelvic tilt
(F1,30=0.73, P=.40), hip flexion (F1,30=2.44, P=.13), and knee
extension (F1,30=0.06, P=.80) at maximum hip flexion were
similar between groups throughout testing. Anterior pelvic tilt
(F1,30=0.69, P=.41), hip flexion (F1,30=0.23, P=.64), and knee
extension (F1,30 =3.38, P= .62) at maximum knee extension were
similar between groups throughout testing. Men demonstrated
greater anterior pelvic tilt than women at maximum knee extension
(F1,30=13.62, P=.001).
Conclusions: A single session of 3 straight-leg raise hamstring
stretches did not change pelvis, hip, or knee running kinematics.
Key Words: straight-leg raises, flexibility

should you cut out stretching before running?

Does pre-exercise static stretching inhibit maximal muscular performance? New study indicates yes. I have always advocated an active warmup like drills or running ~5 minutes at 60% effort prior to a workout or run. If you stretch, try after your run.

Scand J Med Sci Sports 2012:

Review
Does pre-exercise static stretching inhibit maximal muscular performance? A meta-analytical review L. Simic1, N. Sarabon2, G. Markovic1 1Motor Control and Human Performance Laboratory, School of Kinesiology, University of Zagreb, Zagreb, Croatia, 2Institute for Kinesiology Research, University of Primorska, Science and Research Center, Koper, Slovenia Corresponding author: Goran Markovic, Motor Control and Human Performance Laboratory, School of Kinesiology, University of Zagreb, Horvacanski zavoj 15, 10000 Zagreb, Croatia. Tel: +385 1 3658 606,
Fax: +385 1 3634 146, E-mail: gmarkov@kif.hr Accepted for publication 3 January 2012 We applied a meta-analytical approach to derive a robust estimate of the acute effects of pre-exercise static stretching
(SS) on strength, power, and explosive muscular performance.
A computerized search of articles published between 1966 and December 2010 was performed using PubMed, SCOPUS, and Web of Science databases. A total of 104 studies yielding 61 data points for strength, 12 data points for power, and 57 data points for explosive performance met our inclusion criteria. The pooled estimate of the acute effects of SS on strength, power, and explosive performance, expressed in standardized units as well as in percentages, were -0.10 [95% confidence interval
(CI): -0.15 to -0.04], -0.04 (95% CI: -0.16 to 0.08), and -0.03 (95% CI: -0.07 to 0.01), or -5.4% (95% CI:
-6.6% to -4.2%), -1.9% (95% CI: -4.0% to 0.2%), and -2.0% (95% CI: -2.8% to -1.3%). These effects were not related to subject’s age, gender, or fitness level; however, they were more pronounced in isometric vs dynamic tests, and were related to the total duration of stretch, with the smallest negative acute effects being observed with stretch duration of _45 s. We conclude that the usage of SS as the sole activity during warm-up routine should generally be avoided.

Mercy Wild Run

Mercy Wild run will be held May 5, 2012.

Mercy invites you to be a part of the Mercy Wild Run - Saturday, May 5, 2012!

ABOUT THE EVENT:
The event offers 3 races -
5K Run
10K Run
Kid's Fun Run (children ages 4-10)

RACE DAY SCHEDULE:
6:30 - 7:30 a.m. Registration/Packet Pick-Up at Sunset Zoo Main Entrance
7:45 a.m. 5K/10K Participants at Start for pre-race instructions
8:00 a.m. 5K/10K Runs Begin
8:45 a.m. Face Painting for Kids
9:10 a.m. Kid's Fun Run Begins
9:30 a.m. Awards Ceremony

REGISTRATION:
To register prior to the day of the race, return the 2012 Wild Run Entry Form (PDF) by mail to:
Mercy West Rehab
Attn: Amber Befort
315 Seth Child Road
Manhattan, KS 66502

RACE PACKET PICK-UP:
Packets can be picked up from 5:00 to 8:00 p.m. on Friday, May 4 at Mercy West Rehab - 315 Seth Child Road. Packets will be available for pick-up the morning of the race also.

Saturday, April 21, 2012

Registration for RoyalTracs5K begins at 7:30 AM, Race/Walk Begins at 8:30 AM.

Location: Northeast Community Park/Linear Trail, 680 Knox Lane, Manhattan, Kansas. This is an two loop course around the park. This is a Mixed Trail

- NO SPIKES.

For more information go to http://www.royaltracs5k.com/

Hospital Hill Half Marathon June 5, 2010 Kansas City. See you at the races.

Welcome 2010

If your New Year's resolution is to get in shape, complete a marathon or begin a running program, join the K-State Running Club.