One of the most important aspects of athletic development we emphasize is something we call - The Other 23.
You train for approximately 1-hour a day and then for the other 23 hours of the day what do you do? Think about that for a second. That's 23 hours of away from training and 1 hour training - In the grand scheme of things, what do you think is more important?
No doubt training is of utmost importance, but if you aren’t taking care of the hours spent away from training you are definitely short changing your results.
You can't out train or out work a poor lifestyle
The truth is, you get better between training sessions, not during them. Training elicits a stress on your body and you become better by adapting to those stresses. Training provides the stimulus for awesome results, BUT to fully maximize those results you need to take care of the other 23-hours you are not at BBA.
What does this mean?
Nutrition - Eating tons of lean proteins, vegetables, and fruits at every meal
Rest - Getting AT LEAST 8-hours of sleep per night - Plus consider a 20-40 minute nap
Taking 10-minutes everyday to spend on your body
Stretching, Mobility, Self Massage (foam rolling)
Hot-Cold Showers, Cold Baths, Epsom Salt Baths
Being Active (Not watching TV/playing video games all day)
Drinking plenty of water - 1/2 your BW in ounces
Breathing Drills/Meditation - Tap into your parasympathetic nervous system and down regulate
It’s during The Other 23 that you will truly see the biggest results. These hours are the difference between the good and great. It's the difference between the serious and non-serious. It's also the most underutilized aspect of most athletes lives.
If athletes, or really anybody for that matter, would just take control of 80% of this Other 23, they would see tremendous improvements in all areas of their performance and health.
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At Building Better Athletes, we got our start working with primarily baseball athletes, in particular pitchers. About half of our population is baseball athletes, we work as the Sports Performance Specialists for an area University pitching staff, and we regularly consult with baseball teams/clubs on proper development and care of baseball athletes.
For anybody who has worked intensively with baseball athletes knows the unique demands baseball presents and conversely how specific and specialized the training for these athletes needs to be. You can definitely mess up a baseball player by performing wrong things in the weight room. The interplay and intricacy of throwing/pitching and hitting is very detailed and throwing un-needed stresses or quarks into the interplay is a recipe for disaster.
It's always interesting to see athletes comes to us, whether it be HS or college, and they describe their previous or even current training program to us, and literally it could be considered negligence on behalf of the coach/team. Many of the things we see, especially depending on the quality of coaching, are probably doing more harm than good and setting many of their athletes up for failure or injury.
Then we ask if their is any individualization in the program or if the coach has ever seen you with your shirt off and evaluated your glenoid-humeral movements, thoracic spine movement, or rib cage/lumbar spine relationship to overhead movement. To this day, we've never had an athlete tell us yes to either one of those questions and it's funny because this information should be directly used to what the training program should look like.
If an athlete has a depressed scapula, then things like deadlifts, farmer walks, Olympic lifts, and cueing down and back are all wrong. If an athlete has valgus sign at the elbow, then things like Snatch's, Jerk's, barbell Back Squat, and most OH lifting should be avoided. If an athlete presents anterior tilt and protraction of their scapula, then benching is a big no-no. The list goes on and on, yet we never see a HS and even many college programs take any of this into consideration, and it's no wonder their athletes are searching elsewhere because they don't see actual on-field performance enhancement or they got hurt.
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We work with a lot of HS athletes preparing for that transition to college and it's always a fun and stressful time for these athletes as they look for a place to spend the next chapter of their life.
I remember going through the recruiting process and thinking what the hell am I going to do? How can I tell the difference between all these schools?
When I look back, it's one of those - I wish I knew then, what I know now.
Athletes and parents often go into these situations not really knowing what to look for and this can make the whole process really sticky.
Two months ago, we were lucky enough to have 3 area coaches come in and talk to our athletes about things they can be doing to help their chance to play college ball. It was great opportunity for our athletes to hear directly from these college coaches on what they look for and what athletes should look for when choosing a school.
Below we've compiled some of the most important questions athletes and parents need to know before making this big decision.
Take a look at these and have a plan during these exciting times. It will save a lot of headache and solve some potential problems choosing a school.
Education
- Do they have the academic programs/degree you want?
- Do they have a solid academic support staff in place? Will you have access to tutors?
- What is the team's graduation rate?
- Are there alumni that studied in your degree field and what are they doing now? Can you talk to them?
- What was the team's average GPA?
- Do the coaches oversee and look over your grades or will you be on your own?
- Is their an independent academic standard (aside from the NCAA's) that you need to reach in order to play?
Athletic
- Will you have an opportunity to play right away? If not, are you ok waiting 1, 2, maybe 3 years before playing?
- How would the coaching staff describe their coaching style? Can you see yourself being coach as such?
- Did you meet the strength and conditioning coach? What is his/her approach to training both in-season and off-season? (You’ll be spending a lot of time with this coach)
- Have you watched this team play a game and practice? (Let me tell you, college is a heck of a lot different than HS in both practice and game tempo, intensity, etc)
- Did you meet the assistant or position coaches? They'll often be the ones coaching you far more than the head coach will be.
- Does the coaching staff get out and attend or speak at different conferences to improve at their craft? I can tell you I'd much rather be part of a program that is continually trying to find better more successful ways to coach and plan for me as an athlete and as a team, rather than just be stuck in their ways.
Miscellaneous
- What is a program's track record in terms of injury rates? This is especially important for sports like baseball, soccer, basketball. Are the same injuries occurring every year like ACL, UCL tears? If so, this may mean something is going on that increases risk of these injuries ie over-use, poor training models, dangerous practice habits, etc. You don't want to become one of these statistics, so know if you're a pitcher and every year they have guys having Tommy John Surgery, a red flag needs to go off.
- How tough of an adjustment, socially will it be for you? This is HUGE! You'll be spending the next 4-5 years of your life in this city/community. Will you fit in? Is it too far or too close to home? Is the social environment enough or too much for you?
- Is it public or private? This may seem weird, but there are usually some vast differences between a public vs private university. Most private institutions have some sort of religious background and this may mean mandatory religious education classes, required weekly mass, living on-campus for 2-3 years, no opposite sex in dorm rooms, required class attendance, dry campus, more expensive tuition, etc. Public institutions tend to be more open and allow more freedom than private institutions, but on the same hand they tend to be larger, provide less "intimate" education (larger classes, less hands on advising), and often don't require attendance to class. Overall each option provides different pros and cons, know them.
- How much is tuition? Can you get grants, scholarships, or help paying this? With today's cost of college education, this question needs to be asked. A school may look great and everything, but is it worth paying off 100K for the next 20-years of your life?
Hope this helps all those aspiring athletes gain clarification as they choose their college. Making a great decision at this junction will determine many things in an athletes future. Be sure to leave no stone un-turned and know the details of your decision.
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In case you've been living under a rock this past week, you've heard Derek Jeter retired from the game of baseball. Arguably one of the greatest baseball players of all-time on the best franchise in the history of the MLB.
What's stood out even more than his illustrious career, is him as a person. Jeter has played in the league for 20-years and is considered one of the greatest leaders and class acts in the game. Everybody who has known Jeter has nothing but great things to say about the guy, and in the professional sports world this a feat in itself.
There are things all athletes can learn from the career from Jeter, and below are 3 things athletes should take notice too.
(Photo Credit: Giantbomb.com)
1. Consistency
Jeter is a model of consistency and a guy that plays day in and day out, not to mention he plays what is considered to be the leader of the defense - Shortstop. Overall, Jeter played for 20-years with a career batting average of .310, hit 260 homeruns, drove in 1311 runs, and scored 1923 times.
Check this out, in his first full season he hit .314, had 10 homeruns, 78 RBI's, and scored 104 runs. In his 18th full season he hit .316, 15 homeruns, 58 RBI's, and scored 99 runs. Not only that, in his 19 full years in the bigs, he played in 145 or more games in 16/19 seasons. If that's not a model of consistency, I don't know what is. Jeter has also said that he's within 5lbs of the weight he was during his rookie season, meaning he's a guy that takes care of his body and the does little things that allow him to be great.
Half the battle is showing up, day in and day out, and putting your best effort on the field and Jeter did that. He played through pain, played when he was tired and beat up, and played when he didn't feel his best. He didn't make excuses, he showed up and performed, this is admirable and something all athletes should take note.
2. Let His Game Speak
If there is one thing all competitors say about Jeter is he respected the game and played it the right way. He wasn't cocky, didn't try to show anybody up, played hard, played with respect, and played the game the right way.
He didn't talk about himself or try to subtract from other players/teams; he let his game speak for itself. It's a breath of fresh air to hear this as all you ever hear today is players talking about themselves or trying to tear down another player. It's great to have confidence, but these kind of antics are over the top and don't win you over any admirers.
Jeter let his game do the talking and his game did the most talking when the game is on the line. He has been given the nickname, "Mr. Clutch" for good reason. Just think about his last week - He ended his final game at Yankee Stadium with a walk off RBI to win the game. Then he ended his final career at-bat with a hit. All great players step-up when the game is on the line, and Jeter did this as well as any.
Walk the walk, don't talk the talk.
3. Humble
The guy is going to be a 1st ballot Hall of Famer, was Rookie of the Year, been a All-Star 14-times, won 5 Gold Gloves, won 5 Silver Sluggers, was MVP of both the World Series and All-Star game, and was a World Champion 5 times. If anybody is in a situation to be cocky, it's Jeter, yet you never hear anything.
The guy goes about his business, avoids negative headlines, and play the game the right way. He's humble, down to earth, and respectful of the game and it's history. If you haven't seen this commercial of Jeter, it's a must see. Plus it's got ole Franky Sinatra music leading it, so it's even more awesome!
Take note athletes - Be humble, be consistent, and let your game speak for itself.
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Overhead actions dominate many sports; everything from pitchers, quarterbacks, volleyball players, tennis, swimming, to handball players, they all have huge requirements for OH actions. With all of these actions, the major goal is to increase the velocity of the implement used - we want to increase throwing velocity, throwing distance, serving power, stroke power, and spiking power - Overall we want to increase the high stinky cheddar!
Well how do you improve OH power and velocity?
Previous research has reported that high-velocity throwing begins at the lower body (1). OH power is driven through leg/hip movements and this power progresses up through the torso/core, to the shoulder and finally through the arm where it gets put to work on the given implement. A stronger and more stable lumbopelvic-hip complex contributes to higher rotational velocity (3).
Roach and Liebermann indicated that 90% of the work for throwing power is generated at the hips (1).
Yes, 90%!
Look at anybody who thrives in an OH sport and they'll have a solid lower half.
It makes you wonder why we see all these special devices, bands, and weighted balls designed to improve throwing velocity, when the reality is that the best way to improve throwing velocity is to improve your lower half. Trying to increase throwing velocity by focusing on strengthening the shoulder or arm is akin to putting new tires on a car - it will look good and give some performance benefits but if the engine isn't there, it really doesn't matter.
We love to use med balls and some of the devices mentioned above to develop and cement the rotational sequencing, but it's important to understand they are just a small tool and are not as effective for increasing throwing power as strength training.
In fact a study from way back in 1994 showed this; medicine ball training alone had a neutral effect on throwing velocity, while a strength training group produced a significant increase in pitching velocity (4). This is not to say strengthening the shoulder or the use of certain devices isn't warranted, they have a time and place, but they shouldn't be the vocal point in training programs and unfortunately that's exactly what we often see in many OH training programs.
As many can attest, we feel the best approach is a combination of different tools, but first and foremost is a good base of strength. With this base is place, the other tools can be more effective and transfer to sport to greater degree.
What's even more interesting about developing the lower body is that Lehman et al found that power in the frontal plane (lateral movements) correlated most to throwing velocity; more so than vertical jump, sprinting speed, and vertical med ball power (2).
What's this all mean?
It means that throwing velocity is specific and training demands needs to follow suit. Traditional squat, deadlift, clean, snatch, and bench alone don't cut it. Training elements need to be in place to focus on frontal plane movements and developing power in this manner.
When I first read this study a year ago, I decided to study many of my athletes on these same tests. Specifically, I evaluated unilateral lateral jump and throwing velocity. After compiling 25 samples, I found the same result - those athletes with the longest lateral jump, threw the hardest. The graph below shows the obvious trend; you not only need great power and strength in the lower body and hips, but it also has to be specific to lateral movements.
First and foremost, get strong and powerful, especially in the frontal and transverse plane. This means applying many of the tools used below. If you haven't seen some of these or performed drills in this manner, then you're short-changing your ability to throw that high stinky cheese. Take a look.
Finally in terms of OH training, we really hammer away at hip and pelvis stability and control. Burkhart et al demonstrated that poor gluteus medius
strength and control can effect "up the stream" and place increased stress on the shoulder. These researchers reported that approximately 44% of athletes presented
with SLAP (superior labral anterior-posterior) tears also exhibited
gluteus medius weakness (5). Another interesting study showed that pitchers showed lower glute and hip strength/control compared to position players (6). This may contribute to explain why pitchers tend to have greater occurrence of arm injury when volume is equated.
Weak glutes and hips will not only effect leg drive and force put through the body, but it also effects position and mechanics through different OH movements. When we look at pitchers, during balance point, if the hip on the grounded leg sinks or sags it will effect the whole delivery. We need a strong and stable base in this hip and this means working on glute medius strength through band walks, clams, or side lying leg raises. We also like to work this stability in the specific manner it is seen in many OH athletes, demonstrated by the drill below. The band forces the abductors to be highly active to stabilize this position.
Bring in the Closer
With all the OH athletes we work with, increasing OH power is key and when athletes go through our program that emphasized frontal plane movements, they can tell the difference. A big squat and deadlift is great, but if that doesn't specifically transfer to lateral and rotational movement, then it's all for not. We get great feedback from our athletes who feel the transfer of strength, power, and speed during OH movements because of our approach.
So if you want to throw cheddar, get strong laterally and see the results!
Go Get 'Em!
References
1. Roach and Liebermann. Upper body contributions to power generation during rapid, overhand throwing in humans. Journal of Experimental Biology, 2014
2. Lehman, G et al. Correlation of Throwing Velocity to the Results of Lower-Body Field Tests in Male College Baseball Players. Journal of Strength & Conditioning Research: April 2013 - Volume 27 - Issue 4 - p 902-908
3. Saeterbakken, A et al. Effect of Core Stability Training on Throwing Velocity in Female Handball Players. Journal of Strength & Conditioning Research:
March 2011 - Volume 25 - Issue 3 - pp 712-718
4. Newton, R; McEvoy, K. Baseball Throwing Velocity: A Comparison of Medicine Ball Training and Weight Training. Journal of Strength & Conditioning Research: August 1994
5. Burkhart SS, Morgan CD, Kibler WB. Shoulder injuries in overhead athletes. The “dead arm” revisited. Clin Sports Med2000;19(1):125-158.
6. Laudner, Kevin G., et al. "Functional hip characteristics of baseball pitchers and position players." The American journal of sports medicine 38.2 (2010): 383-387.
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Sleep! I absolutely love to sleep, but unfortunately I'm in the wrong field with daily wake-up calls at 5:00am, but Sundays are the 1-day I get to play catch-up on some good sleep. So it's only fitting that I write this on a Sunday morning after a good night of rest.
For athletes, sleep might be the most powerful tool you have for increasing performance. It's also one of the easiest aspects to improve but often very under-managed. It's very UNcommon to hear of an athlete we work with get to bed before 10pm, yet alone 11pm or midnight.
This is discouraging considering the impact quality sleep can have on athletes, especially those in high school or below. The role sleep plays in energy levels, recovering from training, focus, attention, hormonal levels, and combating fatigue is clear. Serious athletes have serious schedules, from training, to practice, to school, to games, to individual instruction, etc and this takes a major toll on the body. The main weapon athletes have to balance this effort and make sure it turns into success on the field and in the classroom, is sleep!
There is growing evidence that sleep duration and lack of sleep affect the onset of metabolic syndrome, obesity and type II diabetes, particularly via their association with increased body weight, glucose intolerance and high blood pressure (1).
Not only that but researchers have shown that sleep extension (adding on average of 110-minutes a night) increased shooting accuracy, decreased reaction times, decreased fatigue scales, and improved ratings of physical and mental ratings during practices and games in basketball players (2).
These
Collegiate Basketball players increased their sleeping patterns to around 10-hours a night and in return saw their free throw percentage increase by 9% and 3-point shooting percentage by 9.2%! That's a lot of points to be had by a player and a team, and can mean the difference in the outcome of many games!
When I talk to athletes athletes the common response is that it's not a big deal to lose sleep and it doesn't effect their playing ability. But research tends to feel otherwise, and just 1.5 hours of sleep loss can decrease insulin sensitivity, decrease leptin concentrations, and can acutely decrease body weight, but chronically increase body weight (1).
In plain terms, decreased insulin sensitivity means insulin levels remain elevated for longer periods of time due to the lack of ability to get glucose in muscle tissues, ie not what we want. Leptin is known to suppress appetite, so a lack of leptin can lead to increased hunger and appetite which may lead to weight gain. This effect can be seen as studies appear to point to a relationship between lack of sleep and higher body mass index and fat percentage (3).
Literature is growing to show a clear relationship between lack of sleep and different potential health and performance problems.
"In summary, inadequate sleep, in both quality
and quantity, should be regarded as a plausible risk factor for the
development of obesity and type 2 diabetes. In addition to other health
promotion measures, a good night's sleep should be seen as a critical
health component by clinicians in the prevention and treatment of
obesity and type 2 diabetes." (3)
Overall sleep deprivation can effect the following
Reduce Testosterone levels
Reduce Ability to Recover
Increase Stress
Increase Appetite
Increase Risk of Obesity
Increase Risk of Type 2 Diabetes
Decrease School, Athletic, and Work Performance
Tips For A Better Night of Sleep
Pitch Black - A huge hormone that helps control the whole sleep-wake cycle is melatonin. Melatonin is greatly influenced by light; darkness increases melatonin production while light reduces melatonin levels. At night we want complete darkness to help stimulate melatonin production which will aid in quality sleep. So try to keep your room at dark as possible.
Cool - Most sleep better in cool climates. Try to keep your room around 65 degrees, whether this be with a fan or open windows. Too hot or too cold a temperature, as we've all experienced, can effect quality of sleep.
No Electronics - This goes hand in hand with keeping your room as dark as possible. Electronics stimulate the body and suppress melatonin. They actually keep you awake and it takes longer for the body to reach deep sleep with these in the background. So shut off all electronics 30-minutes before heading to bed! Even better is to eliminate as many electronics as possible from your room. Keep your computer, Ipad, Ipod, cell phone, etc out of your room at night.
Develop a Routine - Getting into a routine or ritual before bed helps the body wind-down and get used to a pattern of sleep. This can mean anything to anybody; whatever works for you, go for it. Many like reading, writing, stretching, a hot bath, meditation, or listening to music. The body starts to learn this routine, and knows when these activities start that it's their cue to wind-down and get ready for sleep.
Eat and Drink The Right Things - Avoid eating big meals, caffeine, and alcohol too close to bed time (90-120min). These things can effect your ability to fall asleep and the quality of your sleep.
Now get those zzz's!
Go Get 'Em!
References
1. Robertson, Russell-Jones, Umpleby and Dijk. Effects of three weeks of mild sleep restriction implemented in the home environment on multiple metabolic and endocrine markers in healthy young men. Metabolism Clinical And Experimental, 2013
2. Cheri, Mah; Kenneth, Mah; Kezirian, Eric; William, Dement. The effects of sleep extension on the athletic performance of collegiate basketball players. Sleep, July 1, 2011. 34(7), 943-950.
3. Jessica, McNeil; Eric, Doucet; Jean-Phillippe, Chaput. Inadequate sleep as a contributor to obesity and type 2 diabetes. Canadian Journal of Diabetes. Volume 37, Issue 2, Pages 103-108. April 2013
It's been a while since we've posted an article on here, but it's been a very busy summer here with the opening of our new facility so that's our excuse and we're sticking to it. Now that school is back in action, we'll be putting out content on a more regular basis, so hold on to your butts!
Our goal is to put out 2-articles each week, with one being a research breakdown and one being something a little more fun. We've also gotten a few requests for article topics, which we will write about, so if you have a request, leave a comment or email us and we'll touch upon your request.
Research in Kettlebells
In our training we use kettlebell's quite a bit and it has slowly turned into one our favorite methods to teach the hip hinge and develop power.
In literature, the amount of quality research on kettlebell's is small. There have been a few studies looking at the effect of KB's on strength and power (1-5) and the results of these studies have shown that KB training elicit similar results as traditional training and may have a stronger effect on the development on power over absolute strength.
When breaking down these research studies, it is clear there are some obvious drawbacks on the methods used. In all the studies reviewed, you will only find one with the use of a KB over 16kg (6). For anybody with experience in KB's knows this is a very light weight, and considering this light of a weight could stimulate such positive results, it makes you wonder what effects a heavier KB would have.
Many of our youth athletes have the strength, control, and efficiency to use a 16kg KB, so for these studies to use this light of a weight with fully mature subjects is questionable.
I've seen seen athletes swing KB's of 70-100+lbs with no problem whatsoever. This weight is 2-4 times more than the amount these studies use, and it would be very interesting to see the effects on strength and power with the use of these heavier bells.
Kettlebell Mechanics
We teach the KB swing as a hinge, not a squat. We often explain it as a dynamic RDL rather than a dynamic squat. When the swing is performed in this manner, high levels of posterior chain activation take place to control the rapid eccentric movement and greater emphasis on the stretch-shortening cycle takes place.
The mechanics of the swing also place greater emphasis on the medial hamstring group (semitendinosus) than the lateral group (bicep femoris) (7). This is interesting because sprinting uses similar muscle patterns and places greater emphasis on the medial hamstrings (8). This may give reason to the KB swing being a great exercise to train the medial hamstrings in a similar manner seen in sprinting.
The hip hinge swing also has a much higher proportion of horizontal forces compared to squats and jump squats (6). This is a unique dimension of the KB Swing that can't be matched by traditional squats, deadlifts, or Olympic movements. The swing takes hip extension through a fuller range of motion and the path of the bell differs from traditional barbell movements. This may also be interesting for athletes because recent research is showing the application of horizontal forces increases greater than vertical forces when accelerating to top-end speed (9).
Finally the impulses seen during the KB swing are huge (6). Impulse is force x time, and this means the KB swing elicits of ton of force in a small amount of time. This is important because the ultimate goal of athletic preparation is to produce higher forces is shorter times; this outcome is what leads to faster running speeds, higher jumping, increased power, quicker change of direction, and ultimately better performance.
There have been many who have claimed the benefit of KB swings on back pain and rehabilitation. The exact reasons for these potential mechanisms are not known, but research by McGill et al (10) have shed some light onto some potential reasons.
The KB swing elicited compression forces peaking at 3195N and shear forces peaking at 461N, both seen at the bottom of the swing. The low amount of shear forces is considered to be desirable and less strenuous on the spine. The KB Swing also takes the spine through varying degrees of flexion and extension, and this movement is considered good for the spine. As the saying goes, motion is lotion. Recommendations
Everybody uses Kettlebell's differently and places different emphasis on them. Like anything, they aren't an end all be all, but they can serve a purpose.
We at BBA do not program Olympic Lifts, for various reasons which we will touch upon in a future article, and KB Swings are part of our power development tool box we use instead of Olympic lifting. I feel strongly as research continues to take place, we'll see the benefits of heavy KB swings being very similar to Olympic cleans and snatches, and in our opinion, with less the risk and learning curve.
We stick to mostly KB Swings at our facility, and we really like them because of how quickly our athletes tend to pick up on the technique and how well they work at teaching hip hinging. It's very rare to have an athlete NOT pick up and learn the technique after just a few sets of practice and specific cueing and coaching assistance. We can get groups of athletes up and running with KB Swings the very same day we implement them, while it may take weeks and tons of time to teach a group of athletes to perform a "simple" hang clean. This is a major reason we like them so much.
With our swings, we program them in a variety of different methods. We use them for power development, which we will program heavier swings or band assisted swings. We also use them help teach and cement the hip hinge pattern. For this we use lighter weights and coach assistance to help push the correct path. Finally we use them as conditioning or specific metabolic work. We love to use them with specific work to rest ratio's and hammer away at them during GPP or hypertrophy phases. The added bonus is the emphasis it places on the posterior chain compared to many other conditioning methods.
Finally like we touched upon, we teach a hip hinge type of swing and have the bell only travel up to chin level. The American Swing popularized by Crossfit, in which the bell travels above the head is something you will never see at our facility. In all honesty, this methods serves no benefit and only brings with it potential consequences.
Take a look at these swings and you'll likely see large amounts of lumbar extension, rib expansion, forward head position, and the fact that many are not suited for this type of loaded shoulder flexion. Not to mention the effect this position has on the downward movement. It's not uncommon to have the bell come down and all herky jerky and put massive strain on the shoulder and spine. All in all, avoid the American Swing and stick to chin level.
Go Get 'Em!
References
1. Jay K, Frisch D, Hansen K, Zebis MK, Andersen CH,
Mortensen OS, Andersen LL. Kettlebell training for musculoskeletal and
cardiovascular health: A randomized controlled trial. Scand J Work,
Environ Health 37: 196–203, 2011.
2.
Jay K, Jakobsen MD, Sundstrup E, Skotte JH, Jørgensen MB, Andersen CH,
Pedersen MT, Andersen LL. Effects of kettlebell training on postural
coordination and jump performance: A randomized controlled trial. J
Strength Cond Res 27: 1202–1209, 2013.
3.
Lake JP, Lauder MA. Kettlebell swing training improves maximal and
explosive strength. J Strength Cond Res 26: 2228–2233, 2012.
4.
Manocchia P, Spierer DK, Lufkin AK, Minichiello J, Castro J.
Transference of kettlebell training to strength, power and endurance. J
Strength Cond Res 27: 477–484, 2013.
5. Otto WH III, Coburn JW, Brown LE, Spiering BA. Effects of
weightlifting vs. kettlebell training on vertical jump, strength, and
body composition. J Strength Cond Res 26: 1199–1202, 2012.
6. Lake JP, Lauder MA. Mechanical demands of kettlebell swing exercise. J Strength Cond Res 26: 3209–3216, 2012.
7. Zebis MK, Skotte J, Andersen CH, Mortensen P, Petersen HH, Viskær TC,
Jensen TL, Bencke J, Andersen LL. Kettlebell swing targets
semitendinosus and supine leg curl targets biceps femoris: An EMG study
with rehabilitation implications. Br J Sports Med 2012.
8. Jönhagen S, Ericson MO, Nemeth G, Eriksson E. Amplitude and timing of
electromyographic activity during sprinting. Scand J Med Sci Sports 6:
15–21, 2007.
9. Randell AD, Cronin JB, Keogh JW, Gill ND. Transference of
strength and power adaptation to sports performance-horizontal and
vertical force production. Strength Conditioning J 32: 100–106, 2010.
10. McGill SM, Marshall LW. Kettlebell swing, snatch, and bottoms-up carry:
Back and hip muscle activation, motion, and low back loads. J Strength
Cond Res 26: 16–27, 2012.
