For professional baseball players, the majority of training occurs in-season while balancing the physical workload of games, practice, and team travel. Spring Training begins early in the year (February-March) and is followed by a 140-162 game regular season lasting through September or later (The 2010 World Series ended on November 1st). It is also not uncommon for players to participate in Winter Leagues in the Dominican Republic, Venezuela, or Arizona during the off-season months. So, given the limited time for physical preparation during the off-season and the high baseball workload throughout the year, how should coaches go about avoiding muscle soreness in players from in-season strength and conditioning work? A simple answer is that coaches must use caution towards high-volume types of training while promoting a variety of fatigue-reducing recovery strategies (i.e. SMFR, contrast bathing, massage, nutrition, and rest). Possessing a better understanding of muscle soreness is helpful in providing guidance to players who do not wish to perform resistance training in fear of becoming sore.
The muscle soreness occurring 24-72 hours following unaccustomed training is referred to by exercise professionals as DOMS (Delayed Onset Muscle Soreness). Symptoms of DOMS may include compromised running mechanics, decreased functional range of motion or stiffness, and reductions in strength and power. Of importance to coaches, baseball performance may be negatively affected by excessive muscle pain, leading to compromised movement patterns in throwing, running, and hitting. A risk of muscle injury in tissues surrounding the prime movers (major muscle groups) is of increased concern from altered baseball mechanics.
It is important to realize that the negative effects of DOMS are temporary, and that the damage to the muscle from training (i.e. overstretching) occurs within the muscle cells (at the level of the myofibril) and not in the muscle tissue as a whole. From a medical perspective, a muscle tearing injury (occurring in an entire muscle) would result in a less pliable, scarring over of the affected tissue (i.e. scar tissue). This is NOT the same tearing of muscle tissue which results in DOMS. The term “micro-tears” is often used to describe the displacement, or tearing, of the myofibril proteins (actin, myosin, troponin, and tropomyosin) which serve as cogs to contract our muscles. Micro-tears are believed to promote muscle growth and gains in strength, leading to the notion that DOMS may be a natural part of the early strength building process.
The most effective method of preventing DOMS is to avoid unaccustomed training through a consistent routine. The complete replacement of myofilament proteins naturally occurs every 7-15 days within muscle cells, allowing for relatively quick recovery and adaptation from exercise induced stress. A consistent training approach which considers the overall workload of professional baseball players (i.e. games, practices, travel, nutrition, and sleep) will allow for the players to gradually improve muscular fitness to achieve a higher training level. A workload of 1-2 strength or power sessions per week in-season is a good starting point to avoid overtraining. Workouts can be divided into lower and upper body days as needed.
Key Points For In-Season Training:
DOMS is most common with strenuous initial training sessions after prolonged inactivity – Perform a consistent routine and do not add new exercise movements in-season.
DOMS is caused by the eccentric, or lowering, portion of exercise movements –
Avoid performing “negatives” or exercises with strenuous deceleration components.
DOMS symptoms temporarily lessen after a warm-up which promotes blood flow –
Recommend that players perform a general cardiovascular warm-up before all activity.
DOMS can negatively impact players physical and psychological performance –
Be cautious in overloading players too soon to avoid poor performance on the field.
Eric McMahon, MEd, CSCS
Minor League Strength and Conditioning Coach
Texas Rangers
Showing posts with label muscle injury. Show all posts
Showing posts with label muscle injury. Show all posts
Monday, March 7, 2011
Sunday, April 18, 2010
Let’s Get to the Core of the Problem
Well, it’s been a little while since our last installment on the BaseballStrengthCoaching.com blog site. I apologize for that. With the initiation of the baseball season, I have been striving to settle in to a routine, adapt to the rigors of travel, and adjust to the day-to-day grind that is the game of baseball. But, that’s a topic for another time.
What I want to talk about this week is the dreaded Oblique Muscle Strain. Baseball is a rotational sport. Everything players do from swinging the bat, pitching the ball, or fielding a ball in the hole, involves a rotary movement at the hips, torso, or shoulder complex. The oblique muscles are the responsible for creating this torso rotation pattern. In recent years, many major league players, both position player and pitcher alike, have been sidelined by injury to this muscle.
In my opinion, these injuries occur for several reasons. First, have you ever followed a hitter around for a day and counted exactly how many total swings he performs? Let’s look at an example of a typical day. Player A shows up to the ballpark and goes to the hitting cage for early work. He may perform up to 30-40 repetitions attempting “lock in his swing”. Then, later in the day, Player A participates in the daily team batting practice which consists of up to 15-20 minutes of a group of 4 hitters. Each hitter may perform another 40+ repetitions. During the game, he takes another 5-10 swings while in the on-deck circle. This time, often with an additional weight on the bat. And finally, he averages 5 at-bats per game. And just for argument, let’s say that he takes 4 swings per at-bat for an additional 20 repetitions.
40 + 40 + 10 + 20 = 110 swings per day
110 swings per day. And, that doesn’t even take into account the number of rotational movements that are performed with his throwing activities. Add these numbers up over the course of an entire season and the rotational repetition volume is astounding. High volume can lead to fatigue. With fatigue comes changes in movement patterns. Changes in movement patterns equal abnormal muscle firing patterns.
The second reason I think these injuries occur is a result of a neuromuscular “misfire” and is directly related to the type of core training that we traditionally perform. During the hitting and throwing motions there is a period of loading (potential energy) and unloading (kinetic energy). As the pitch is being delivered the hitter performs a slight countermovement to “load” his swing and harness energy. As the ball gets closer to the plate, he begins to initiate his swing and “unload” his energy through the bat to the ball. It is at the point of switching from loading to unloading that these oblique injuries occur. In terms of plyometric training we call it the “amoritization phase”. And ideally, the switch should be as quick as possible in order to maximize the benefits of the stretch-shortening cycle and create the optimal resulting concentric force. Traditionally, players and coaches emphasize standard crunches, concentric med ball rotations, and possibly even medicine ball throwing exercises to improve overall core / trunk force production. However, when an athlete is not trained to harness energy and quickly change direction to release that energy. He lacks the neuromuscular conditioning to execute the fine-tuned pattern of load-stabilize-unload. When this lack of programming is coupled with the fatigue and abnormal muscular recruitment I mentioned earlier, the potential for injury increases.
Finally, “it’s all in the hips”. Hip mobility is a key factor. Athletes must have adequate flexibility and range of motion in the pelvis and hips to allow for complete torso rotation. When he lacks mobility in the hips, greater stresses are transmitted up through the spine creating greater needs of the abdominal musculature. Greater requirements result again in abnormal muscle recruitment patterns and can potentially lead to injury.
Prevention programs of these oblique and abdominal muscle injuries should emphasize the following points:
1. Monitor swing volume and tailor activities accordingly. Emphasize quality over quantity.
2. Core strengthening programs should focus on stabilization, eccentric loading, and the quick switch from load to unload. (Of course a good baseline strength level should be present before progressing to this type of training.)
3. Attention should be placed on hip mobility.
David Yeager, ATC, CSCS
Co-Founder, BaseballStrengthCoaching.com
What I want to talk about this week is the dreaded Oblique Muscle Strain. Baseball is a rotational sport. Everything players do from swinging the bat, pitching the ball, or fielding a ball in the hole, involves a rotary movement at the hips, torso, or shoulder complex. The oblique muscles are the responsible for creating this torso rotation pattern. In recent years, many major league players, both position player and pitcher alike, have been sidelined by injury to this muscle.
In my opinion, these injuries occur for several reasons. First, have you ever followed a hitter around for a day and counted exactly how many total swings he performs? Let’s look at an example of a typical day. Player A shows up to the ballpark and goes to the hitting cage for early work. He may perform up to 30-40 repetitions attempting “lock in his swing”. Then, later in the day, Player A participates in the daily team batting practice which consists of up to 15-20 minutes of a group of 4 hitters. Each hitter may perform another 40+ repetitions. During the game, he takes another 5-10 swings while in the on-deck circle. This time, often with an additional weight on the bat. And finally, he averages 5 at-bats per game. And just for argument, let’s say that he takes 4 swings per at-bat for an additional 20 repetitions.
40 + 40 + 10 + 20 = 110 swings per day
110 swings per day. And, that doesn’t even take into account the number of rotational movements that are performed with his throwing activities. Add these numbers up over the course of an entire season and the rotational repetition volume is astounding. High volume can lead to fatigue. With fatigue comes changes in movement patterns. Changes in movement patterns equal abnormal muscle firing patterns.
The second reason I think these injuries occur is a result of a neuromuscular “misfire” and is directly related to the type of core training that we traditionally perform. During the hitting and throwing motions there is a period of loading (potential energy) and unloading (kinetic energy). As the pitch is being delivered the hitter performs a slight countermovement to “load” his swing and harness energy. As the ball gets closer to the plate, he begins to initiate his swing and “unload” his energy through the bat to the ball. It is at the point of switching from loading to unloading that these oblique injuries occur. In terms of plyometric training we call it the “amoritization phase”. And ideally, the switch should be as quick as possible in order to maximize the benefits of the stretch-shortening cycle and create the optimal resulting concentric force. Traditionally, players and coaches emphasize standard crunches, concentric med ball rotations, and possibly even medicine ball throwing exercises to improve overall core / trunk force production. However, when an athlete is not trained to harness energy and quickly change direction to release that energy. He lacks the neuromuscular conditioning to execute the fine-tuned pattern of load-stabilize-unload. When this lack of programming is coupled with the fatigue and abnormal muscular recruitment I mentioned earlier, the potential for injury increases.
Finally, “it’s all in the hips”. Hip mobility is a key factor. Athletes must have adequate flexibility and range of motion in the pelvis and hips to allow for complete torso rotation. When he lacks mobility in the hips, greater stresses are transmitted up through the spine creating greater needs of the abdominal musculature. Greater requirements result again in abnormal muscle recruitment patterns and can potentially lead to injury.
Prevention programs of these oblique and abdominal muscle injuries should emphasize the following points:
1. Monitor swing volume and tailor activities accordingly. Emphasize quality over quantity.
2. Core strengthening programs should focus on stabilization, eccentric loading, and the quick switch from load to unload. (Of course a good baseline strength level should be present before progressing to this type of training.)
3. Attention should be placed on hip mobility.
David Yeager, ATC, CSCS
Co-Founder, BaseballStrengthCoaching.com
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