Sports Medicine Bulletin
Aug. 25, 2015

Active Voice: Does Drink Temperature Matter?
By Dallon Lamarche, B.SC., and Glen P. Kenny, Ph.D.
Dallon Lamarche, B.SC. Glen P. Kenny, Ph.D.
Viewpoints presented in SMB commentaries reflect opinions of the authors and do not necessarily reflect positions or policies of ACSM.

Dallon Lamarche is a recent bachelor of science graduate with specialization in human kinetics at the University of Ottawa, Canada. He completed the study highlighted in this commentary at the Human and Environmental Physiology Research Unit as part of his senior year research project requirements under the supervision of Dr. Glen P. Kenny.

Glen P. Kenny is a professor of exercise physiology at the University of Ottawa, holds a university research chair in environmental physiology and is a member of ACSM. His research has been directed at characterizing the physiological control mechanisms governing human temperature regulation during heat stress. An area of special focus in his work is the investigation of the physiological effects of heat stress in subpopulations with conditions rendering them particularly vulnerable to heat injury, such as aging, obesity and diabetes.

This commentary presents Mr. Lamarche’s and Dr. Kenny’s views on the topic related to a study which they and colleagues recently completed. Their research report appears in the June 2015 issue of
Medicine & Science in Sports & Exercise® (MSSE). More

Surgeon General to Issue Historic Call to Action on Walking and Walkable Communities

On Wednesday, September 9, U.S. Surgeon General Vivek Murthy will release a Call to Action on Walking and Walkable Communities. You'll have the opportunity to join the U.S. Department of Health and Human Services for the unveiling of the Surgeon General's Call to Action, via a live webcast. ACSM has been a key partner in the development of the call to action.

Walking is a simple form of physical activity that can be done almost anywhere. Encouraging Americans to add walking to their daily routine has enormous long-term health benefits. Good health is not the only benefit of walking. In fact, there is a broad range of individual and community benefits that accrue when people walk more often and when communities are designed to make walking safe, enjoyable and convenient.

This is a unique opportunity to promote the health benefits of walking and bring about real change. The Call to Action will support and complement your organization's focus to improve health and wellness. To help support and advance the Call to Action, background information and a package of call-to-action resources have been developed and will be shared with members following the official announcement.

The event will be webcast from 10:00 – 11:15 a.m. EDT on September 9. Watch for more in next week’s edition of SMB!More

Sedentary Behavior Conference: "Be the Voice of Movement"

Reducing time spent sitting or being sedentary is currently emerging as an important public health strategy. The Sedentary Behavior Conference — presented by Weimo Zhu, Ph.D., from the University of Illinois and SHAPE America — will focus on critical measurement and research issues, as well as practical concerns in sedentary behavior, health research and practice. ACSM is a key partner of the conference, and many ACSM members will be presenting.

The conference, which will be held October 15-17, 2015 at the University of Illinois, is the ideal forum for exercise science researchers, specialists and practitioners, physical activity epidemiologists, fitness leaders, public health officials, health policymakers, integrative medicine practitioners, health care providers, physical therapists, adapted physical education specialists and more. Proposals for poster sessions at the conference will be accepted until September 15, 2015. Click here to learn more about the conference or to register today.More

Health Care Providers: Take the EIM Pledge

As a health care provider, you have the ability to impact your patients by encouraging them to become more physically active and combat the development of chronic disease and disability. Exercise is Medicine®'s EIM Pledge is designed to empower and assist you in taking specific action steps in helping your patients move toward a healthier lifestyle. Read more from the clinician's perspective about the success of walking programs here.

There are four levels of the EIM Pledge. Please select one or more of the following action steps that you will commit to doing in your health care setting. After making your selection(s), Exercise is Medicine will provide you with basic tools and information that can get you started on your pledge right away!

By taking the EIM Pledge, you are committing to making physical activity a standard part of your disease prevention and treatment plans in your health care setting.More

New Issue of Worksite Health International Now Available

Download the new issue of International Association for Worksite Health Promotion's Worksite Health International to access the following featured articles:

IAWHP's Worksite Health International is IAWHP's official newsletter. For more information on IAWHP, visit www.iawhp.org. More

Concussions Can Occur in All Youth Sports
The New York Times
This article quotes ACSM Fellow Steven P. Broglio.

Recent attention to long-term brain damage linked to multiple concussions among professional football players has prompted a much closer look at how children and adolescents who participate in sports can be protected from similar consequences.

And with good reason. The young brain is especially susceptible to concussion, and sports-related concussions account for more than half of all emergency room visits by children aged 8 through 13, according to the National Athletic Trainers’ Association. A child who suffers a concussion is one and a half times more likely to experience another, and those who have had two concussions have a threefold greater risk of the same injury happening again.

Many parents wonder if it is wise to let their children participate in sports like football and soccer, in which head injuries are most common. Concerns about concussion have been cited as a reason for a decline in enrollment in Pop Warner, the country’s largest youth football program.

At the same time, misconceptions among parents and coaches abound about the seriousness of concussions and how best to prevent them, especially for players who often think they are invincible and say they feel fine so they can get back in the game. Studies have found that more than 50 percent of high school athletes and 70 percent of college athletes failed to report concussions they had sustained while playing football.More

Sweat Not Only Keeps You Safe During a Workout, it Improves Performance
The Washington Post
"No sweat, no glory."

"Sweat is fat crying."

"Good things come to those who sweat."

These are popular mottos among the fitness set. But is there any truth to them? Is sweat really a sign of fitness? Do athletes sweat more?

Yes, so embrace it.

"Sweating is one of the best methods of cooling the body," says Max Prokopy, director of the University of Virginia SPEED Clinic.

Sweat is a byproduct when the body heats up to convert chemical (glucose) energy to work (muscle) energy, Prokopy says. Sweat helps keep the body temperature between 98 and 103 degrees Fahrenheit no matter how intense the workout.

"Performance really starts to suffer at 103," he says. And if you reach 104 degrees you are risking heat exhaustion or worse. More