Rabu, 14 Desember 2011

The bodyweight option.....

You will recall that in the past I have interviewed the authors of Body By Science - Doug McGuff and John Little.

Over on Mark Sisson's blog Doug has a guest post on the Body By Science approach to exercise - Setting Yourself Up to Win: A Body By Science Approach

It is a good introduction to the principles of proper exercise, but the reason I am posting this here is jsut to draw attention to his bodyweight training option.  I hoep Mark and Doug do not mind me copying it here:

If you cannot go to a commercial gym, you can get started with simple free-hand exercises that I will describe to you now.


Chin up: This can be done with a chin-up bar that mounts in a door jam, on a sturdy tree branch or rafter board or playground equipment. If you are not strong enough to do chins, you can set the bar height so you can assist with your legs. If this will not work, simply do them negative only by jumping or climbing to the finished position and lowering yourself as slowly as possible.


Pushups: If you are too weak to perform strict marine pushups, do them from your knees. If you are too weak to do them from your knees, then do only the lowering portion, lowering as slowly as possible. If you are strong enough to do classic pushups, do them with a few modifications. First is slow movement. Start the first inch very gradually, taking 3 seconds to move the first inch and then keep smooth movement going. Divide the movement in halves. Do the first half (bottom position to elbows bent at 90 degrees) until complete fatigue. After you have exhausted the bottom half, do the top half until complete fatigue (elbows from 90 degrees to almost complete extension).


Squat: Start first by doing a static wall squat. Place your back against a wall and descend to a seated position where your hip joint and knee joint are both at 90 degrees. Hold this position for as long as possible. You are done when you start to slide down and cannot hold the 90 degree position any longer. Once you are worn out on the static, do a deep knee bend but with the movement divided in half. Do the first half until fatigue (from hips and knees at 90 degrees/thighs parallel to floor, up to the halfway up point where knees are about 45 degrees). Once you canʼt do the bottom half any more, then do the top half of the movement until you canʼt go on. Remember to not straighten your legs completely, but to turn back around when your knees get to about 15 degrees.


Static Lateral Raise: This movement is done using a door frame. Stand with your feet just outside the door frame and bend slightly forward at the waist. Place the backs of your open hands in the opening of the door frame with your elbows slightly bent. You should be positioned like you are going to a lateral raise with dumbbells. With your hands in the door frame, begin to slowly and smoothly press laterally against the frame. Gradually build up to a 50% effort and keep up a 50% effort for 30 seconds. After 30 seconds, gradually ramp your effort up to 75% effort and continue for another 30 seconds. After this 30 seconds is up, gradually ramp your effort to 100% and continue for a final 30 seconds. When you first start you will think “this is silly”. However, by the end you will realize that this is probably tougher than anything you could do on a weight machine.
The timed static contraction for the lateral raise at the end is a killer.  Superb stuff.

Running Gait and injury

Here is a study which looked at treating a common running injury - Chronic exertional compartment syndrome (CECS) - by getting runners to modify their running technique, moving to a forefoot strike.   Although there were only 2 in the study it seemed to fix the injury.  The entire paper is here.

Here is the abstract for you.

EFFECTS OF FOREFOOT RUNNING ON CHRONIC EXERTIONAL COMPARTMENT SYNDROME: A CASE SERIES.

INTRODUCTION:
Chronic exertional compartment syndrome (CECS) is a condition that occurs almost exclusively with running whereby exercise increases intramuscular pressure compromising circulation, prohibiting muscular function, and causing pain in the lower leg. Currently, a lack of evidence exists for the effective conservative management of CECS. Altering running mechanics by adopting forefoot running as opposed to heel striking may assist in the treatment of CECS, specifically with anterior compartment symptoms.
CASE DESCRIPTION:
The purpose of this case series is to describe the outcomes for subjects with CECS through a systematic conservative treatment model focused on forefoot running. Subject one was a 21 y/o female with a 4 year history of CECS and subject two was a 21 y/o male, 7 months status-post two-compartment right leg fasciotomy with a return of symptoms and a new onset of symptoms on the contralateral side.
OUTCOME:
Both subjects modified their running technique over a period of six weeks. Kinematic and kinetic analysis revealed increased step rate while step length, impulse, and peak vertical ground reaction forces decreased. In addition, leg intracompartmental pressures decreased from pre-training to post-training. Within 6 weeks of intervention subjects increased their running distance and speed absent of symptoms of CECS. Follow-up questionnaires were completed by the subjects at 7 months following intervention; subject one reported running distances up to 12.87 km pain-free and subject two reported running 6.44 km pain-free consistently 3 times a week.
DISCUSSION:
This case series describes a potentially beneficial conservative management approach to CECS in the form of forefoot running instruction. Further research in this area is warranted to further explore the benefits of adopting a forefoot running technique for CECS as well as other musculoskeletal overuse complaints.


Selasa, 13 Desember 2011

Muscle Anatomy

I am getting addicted to the Khan Academy.  Their stuff on biology is amazing.

Stretching is pants

Bill is always recommending that I look at Paul Ingrahm's material.  I don't know why but I've only just now checked him out.  Thanks Bill

Here is Paul on stretching and the ITB band, both things that I've mentioned here recently!

Check out his site:  Save Yourself

Managing your fears

My magpie mind came across this study today as I was scanning the various feeds that I look at to spot stuff for this blog.  Psychology is fascinating to me, particularly how we relate in social situations.  I suppose some of that relates to that booklet I pointed to the other day on human combative behaviour, where two different modes of attack were presented - the predator and the alpha male.

Today I saw this article reported, which is of a study of MMA fighters, the impact fear has on them and how they handle it.   The whole article is available here:  Managing Emotional Manhood: Fighting and Fostering Fear in Mixed Martial Arts Here is the abstract:

Based on two years of fieldwork and over 100 interviews, we analyze mixed martial arts fighters’ fears, how they managed them, and how they adopted intimidating personas to evoke fear in opponents. We conceptualize this process as “managing emotional manhood,” which refers to emotion management that signifies, in the dramaturgical sense, masculine selves. Our study aims to deepen our understanding of how men’s emotion work is gendered and, more generally, to bring together two lines of research: studies of gendered emotion management and studies of emotional identity work. We further propose that managing emotional manhood is a dynamic and trans-situational process that can be explored in diverse settings.

It is a really interesting study and definitely worth reading through over a cup of coffee.  What I find interesting is the analysis of how the men in the study handle that fear and how the authors extrapolate those methods into other circumstances.

The methods that they pull out from the fighters can all be applied in everyday life.  Some of it reads like pop psychology but the reality from which they extract these methods does lend some credance to it all.  The methods: scripting, framing, othering.  It also talks about how fighters foster fear in their opponents - winning fights before they start. 

The end of the study is interesting:

Putting on a convincing manhood act requires more than using language and the body; it also requires emotion work. By suppressing fear, empathy, pain, and shame and evoking confidence and pride, males signify their alleged possession of masculine selves. Such emotion work may thus create an emotional orientation that primes men to subordinate and harm others. And by signifying masculine selves through evoking fear and shame in others, such men are likely to more easily secure others’ deference and accrue rewards and status. Managing emotional manhood, whether it occurs in a locker room or boardroom, at home or the Oval Office, likely plays a key role in maintain- ing unequal social arrangements.
 The same processes that are used in the cage can be used in the rest of life.....It is also useful to think through how  methods could be used in everyday life to handle fear in lots of situations.

Senin, 12 Desember 2011

Another week....another study on intervals

Well, another week and another study on the benefits of interval training.  This time it is Gibala's team again (they have done other work on intervals in the past e.g. this)  from  McMaster University in Ontario. The news story is here

Each session involved pedaling on a stationary bike for 10 repetitions of 60 seconds apiece at about 90 percent of maximal heart rate, interspersed with 60 seconds of rest, capped by a short warm-up and cool-down. Each entire exercise session lasted 25 minutes of which only 10 minutes was spent performing vigorous intensity exercise

The muscle biopsies revealed higher amounts of mitochondrial proteins, suggesting that the high-intensity, low-volume training increased the numbers of muscle cell power generators, a marker of improved metabolic health. Although the training regimen didn't decrease body mass in any of the participants, it did increase the maximal workload that each was able to achieve on the stationary bike and decreased heart rate during exercise, markers of improved fitness.

Again this is both exciting and frustrating.  Yes, short bursts of intense exercise have big impacts on mitochondrial biogenesis, insulin sensitivity and VO2 Max.....so for me I am excited that adding some sprints to my day can have a big benefit.  But as Alex Hutchison has pointed out recently in relation to a similar study how many people are likely to be motivated enough to find time even for this minimal exercise?

The abstract is here and the whole study is available here.

Low-volume high-intensity interval training reduces hyperglycemia and increases muscle mitochondrial capacity in patients with type 2 diabetes

Low-volume high-intensity interval training (HIT) is emerging as a time-efficient exercise strategy for improving health and fitness. This form of exercise has not been tested in type 2 diabetes and thus we examined the effects of low-volume HIT on glucose regulation and skeletal muscle metabolic capacity in patients with type 2 diabetes. Eight patients with type 2 diabetes (63±8 yr, BMI 32±6 kg/m2, HbA1C 6.9±0.7%) volunteered to participate in this study. Participants performed six sessions of HIT (10 x 60 s cycling bouts eliciting ~90% maximal heart rate, interspersed with 60 s rest) over 2 wk. Before training and from ~48-72 h after the last training bout, glucose regulation was assessed using 24-h continuous glucose monitoring under standardized dietary conditions. Markers of skeletal muscle metabolic capacity were measured in biopsy samples (vastus lateralis) before and after (72 h) training. Average 24-h blood glucose concentration was reduced after training (7.6±1.0 vs 6.6±0.7 mmol/L) as were the sum of the 3-h postprandial areas under the glucose curve for breakfast, lunch and dinner (both p<0.05). Training increased muscle mitochondrial capacity as evidenced by higher citrate synthase maximal activity (~20%) and protein content of Complex II 70 kDa subunit (~37%), Complex III Core 2 protein (~51%), and Complex IV subunit IV (~68%, all p<0.05). Mitofusin 2 (~71%) and GLUT4 (~369%) protein content were also higher after training (both p<0.05). Our findings indicate that low-volume HIT can rapidly improve glucose control and induce adaptations in skeletal muscle that are linked to improved metabolic health in patients with type 2 diabetes.

Minggu, 11 Desember 2011

The One Joint Rule

Kelly gave me a shout out on his blog the other day.  I've already said that I didn't deserve to be on that list, but it is nice to be mentioned.

 It’s a pretty powerful statement that a brilliant Scot (Conditioning Research) and a guy with an Iphone and an obsession with performance (me) are on the same list as the NYT, and WSJ?  Crazy.

If you don't know Kelly here he is talking about the importance of maintaining proper posture in movement.