Massage Science and Mythology The trouble with studying massage Massage can be studied: Do people who are sick or broken get better when massaged?
Exercise-associated muscle cramps are defined as painful spasms and involuntary contractions of the skeletal muscles that occur during or immediately post-exercise To many of you, cramping is not news.
It has been a topic of great debate for decades, especially in the endurance community.
How do we prevent them? Rid ourselves of them for good? Most of us have experienced mild to even debilitating cramps at some point in time, and there is nothing fun about being stuck mid-race trying to decide if crawling is a legitimate option.
In short, cramping sucks and despite our long affair with EAMC, we are not much closer to fully understanding their etiology—where they come from. If anything, our new understanding of EAMC is that they are complicated and likely stem from multiple compounding factors that make any one treatment or preventative technique unlikely to work for everyone, every time.
Since the early s, study after study 2, 3, 4, 8, 9 emerged looking at hydration status and blood-electrolyte concentrations primarily sodium and potassium in endurance athletes post-competition and over and over again, there was no significant difference in the hydration status or blood-electrolyte concentration of athletes who cramped and athletes who did not cramp.
Examples of this data are shown in the graphs below comparing dehydration status and sodium intake across crampers and non-crampers in a long ultramarathon. Moreover, dehydration and electrolyte imbalances are system-wide issues and therefore should cause system-wide muscle cramping and not localized problems Most EAMC primarily occur in asymmetry—one calf cramps.
What this means is that we should not eliminate dehydration and electrolyte imbalances entirely from the EAMC playing field. Left Dehydration has often been tracked by percent body weight lost during exercise. In these graphs, you can see that there is little to no difference in percent body weight lost and if the participants were cramping or not over the course locations noted in kilometers of a k race.
Right Sodium supplements have long been used as a means of hopefully preventing cramping during ultra-endurance events. You can see that there is very little difference in the amount of sodium ingested per hour and if the participant cramped during the race. Images from Hoffman, M.
These studies suddenly opened up the door to new theories and possibilities. This theory suggests that EAMC are a combination of several factors coalescing in a perfect storm to over excite your alpha motor neurons resulting in, you guessed it, cramping.
Alpha motor neurons are the largest neurons in your spinal cord and they are responsible for delivering the message for skeletal-muscle contractions and movement.
The factors looked at most keenly are variables leading to heightened fatigue state such as: You can see how these variables build off each other in the chart below These factors could also explain why EAMC seem to come on more in the heat where muscles are fatigued earlier at the same work load, and why athletes with a history of previous cramping are most likely to experience cramping in the future 5.To control movement, the brain has to integrate proprioceptive information from a variety of mechanoreceptors.
The role of proprioception in daily activities, exercise, and sports has been extensively investigated, using different techniques, yet the proprioceptive mechanisms underlying human movement control are still unclear. Rope Jumping for Injury Rehabilitation. Rope jumping has always been a great tool for rehabilitation because it involves synchronizing and combining many movements for .
The gross anatomy of a muscle is the most important indicator of its role in the body. There is an important distinction seen between pennate muscles and other muscles. In most muscles, all the fibers are oriented in the same direction, running in a line from the origin to the insertion.
ABSTRACTStretching, either prior to exercise or at the end, or both, is typically carried out by all individuals undertaking sporting activity whether they be elite or recreational athletes.
The many forms of stretching available to the athlete, either passive or active, have long been thought to improve performance, decrease injury and generally be advantageous to the athlete.
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Sometimes I get backlogged, sometimes my E-mail crashes, and sometimes my literature search software crashes. A number of medical reviews have indicated that exercise has a marked and persistent antidepressant effect in humans, an effect believed to be mediated through enhanced BDNF signaling in the brain.
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