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We’ve all grown up with an expression or two seared on our brains. You know what I’m talking about! Expressions like “Haste makes waste,” or “You can’t judge a book by its cover.”

There are a few of those sayings that make sense today when thinking about them in terms of swimming technique. (OK –probably not exactly what your mom was thinking but maybe an easy way to grasp a few really important concepts and remember them when you are in the water.)

So, in no particular order:

1. You snooze, you lose.

I’m going to lay off the science on this one because there are almost 50 years of research – from Doc Counsilman to Ludovic Seifert – that definitively prove that catch-up stroke has no business in a competition pool. Instead, just close your eyes and visualize taking your best freestyle stroke and then holding your arm/hand outstretched until your other hand catches up with it. What just happened? Were you resting for just a moment? Yes. You were! And while you were “snoozing” you were “losing” velocity.  You were also delaying the beginning of your next stroke (creating a gap in propulsion https://swimmingtechnology.com/injury-prevention-rehab/freestyle-arm-entry-stress/ ) while adding stress to your shoulders. If you want to swim fast, you’ll need to go in the opposite direction: start your next stroke before you’ve finished with the first one.  (i.e. begin the pull before you finish the push. The scientific term for this is positive “Index of Coordination” or positive IdC.)

 2. Keep your head up.

Every week – including during Trials – you can find print and video images of swimmers who either are in – or will soon be in- excruciating pain because they have dropped their heads below the plane of their shoulders. (The image below is of butterfly technique.) Why would anyone think this position could be advantageous? Of course it isn’t: it increases drag, causes shoulder impingement, and makes breathing far more difficult.

3. Drop the attitude.

Actually, this one should be drop the altitude. Swimmers who come up this far out of the water on every breathing stroke are doing several technique no-no’s. The near-vertical position increases drag. (As anyone who ever held their hand out of a car window and noticed the resistance difference for a hand held vertically vs horizontally could tell you.) It exaggerates the up and down motion of each stroke – and that excess motion slows you down. (Simple physics tell us that the shortest distance between two points is a straight – not undulating – line. All that up and down adds time to every stroke.) While some vertical motion is inevitable, swimmers who are able to minimize this on both breathing and non-breathing strokes will have a time and energy advantage.

4. Practice makes perfect.

While this may be somebody’s rational for mega yardage, distance actually has very little to do with perfecting technique. UNLESS the swimmer (golfer, runner, tennis player, etc.) is practicing effective technique they might as well be doing any strength/cardio/endurance activity. The practice that makes perfect is focused on a single technique element at a time, is accompanied by immediate feedback and adjustment, and stops when the technique can no longer be maintained at the chosen speed.  (10,000 hours of doggie paddle will not make you a better competitive swimmer!) If you want to improve your stroke, you need to first identify what needs to be adjusted, learn exactly what you need to do to adjust, and practice that adjustment at slow speed until it becomes automatic.  This expression needs to be “Practice perfect to make perfect!”

5. Knowledge is Power.

The first step toward improvement – for anything – is to identify what needs to change. Once we know that, we can begin the work to improve. Swimmers have a number of ways to identify needed technique changes. First and most important, a coach can observe a swimmer and quickly identify needed changes for most of the basics and some of the advanced elements of stroke technique. At first those technique elements may be simple, like perfecting breathing on both sides in freestyle or keeping the water level at the hairline.  At some point, however, every elite swimmer will need ever-smaller and more difficult-to-accomplish adjustments. Those adjustments demand better and more accurate diagnosis tools and expertise. (Underwater video and force analysis are tools that some coaches and scientists are now regularly using.) This is also why it is so dangerous and discouraging to model technique after anyone else. (I personally know a talented high school runner who was sidelined for a significant portion of his junior year after “adjusting” his technique in an attempt to mimic his running idol.)

So, just one question:  when is the best time to take mom’s advice?

Now!

A recent article* by best-selling author, Caroline Criado-Perez, describes a serious gender gap in sport science data: research is based almost exclusively on men.

The article included a short list of things that we do not know regarding sex differences between men and women and their different physiologic responses to exercise. One piece of this grabbed our attention:

 “The general advice for endurance athletes is to carb-load, with at least one expert specifically advising against fat-loading. But it turns out that this standard pre-race advice is based on studies in men. And it does not hold for women. “

The article noted that women would need to eat 34 per cent more calories than they usually would to achieve even 50 per cent of the performance benefit men experience from carb-loading. It went on to suggest that, because women burn more fat than men during endurance exercise, they might be better off fat-loading.

Before suggesting that female swimmers consider pre-race fat loading versus pre-race carbohydrate loading, we thought it best to check with swim coach, author and nutritional expert, Abby Knox. Her thorough response (below) merits a careful read by every female competitive athlete.

*https://www.telegraph.co.uk/womens-sport/2019/04/18/caroline-criado-perez-sports-science-failing-women/

Fat vs carb

Caroline Criado-Perez is absolutely correct in saying that more studies need to be performed on female athletes. In her recent article, Criado-Perez suggested that female endurance athletes might consider fat loading, rather than carb loading before an endurance race. Before considering that, however, it might be helpful to look at what we do know on this topic.

Our bodies burn a mixture of fat and carbs at rest but as the intensity of exercise increases, the body’s preferred fuel source is carbohydrate. If the glycogen stores are low or not available during hard training/racing, the body is forced to burn fat and protein for fuel. However, more oxygen is required to do this which increases the feeling of fatigue and in addition, muscle mass is broken down. Neither of these are desirable for an athlete!

Carbohydrate loading is a key strategy used by many athletes in preparation for endurance events lasting longer than 120 minutes. Carb loading optimizes endurance performance by increasing the body’s glycogen stores (supercompensation) which help to delay time to exhaustion. Athletes consume very high amounts of carbohydrate 24 hours prior to racing which super-compensates muscle glycogen stores to extend the time to exhaustion.

Because most swim races last between about 30 seconds (for a 50m) and 20 minutes (for a 1,500m), it is not necessary for swimmers to carb load before a swim meet. Instead, competitive swimmers should concentrate on eating enough of the right carbs at the right times and on consuming the right snacks between races to maintain their energy levels.

Does carb-loading work for females?

The question that was raised in the article regarding pre-race nutrition was: if women are better fat burners than men, would they be better off eating fat rather than carbs prior to an endurance event? Women will still burn carbohydrate as a preferred fuel source when they are training or racing at higher intensities, but if the intensity is lower, then the ratio of carbs to fat decreases. At lower exercise intensities, if women can burn fat more easily than men, then in theory, glycogen stores should last longer, and their onset of fatigue will be delayed. If women are able to conserve their glycogen stores longer by burning more fat, it means that they do not have to refuel as often as men and they run a lower risk of “hitting the wall” which is devastating for an athlete to experience (extreme fatigue and inability to perform). This may be one of the reasons why there is a smaller percentage time difference between men and women in ultra-endurance events compared to shorter endurance events.

Most studies on the effects of carbohydrate loading and endurance exercise performance have been carried out primarily on male subjects. An early study on female athletes found that women were less responsive to carbohydrate loading compared to men. However, the female subjects consumed less carbohydrate than the men (per kg body weight) and this was not enough to super compensate muscle glycogen stores. Later studies confirmed that when females consumed higher amounts of carbohydrate, they had similar increases in muscle glycogen to males. This suggests that with substantial carbohydrate intake, female athletes can carbohydrate load just as well as male athletes.

Does fat loading work for females?

It has been theorized that because women burn more fat during exercise compared to men, they rely less on carbohydrate compared to men. This is a great physiological advantage for women! This means their muscle glycogen stores should last longer and their onset of fatigue will be delayed compared to men. Female athletes would still use carbohydrate as an energy source during higher intensity bursts, but they may need to refuel less during a race to prevent glycogen depletion. This may explain why there is a smaller percentage difference in times between top level male and females as the length of the race increases.

The bottom line?

For Criado Perez: Science’s failure to understand how women’s bodies react to exercise differently to men’s poses serious health risks. The average male does not equal the average human.

For Knox: Until there are more studies targeting female athletes, we don’t know whether fat loading in female endurance athletes would provide more of a performance benefit to females compared to carb loading. Pre-race carbohydrate (or fat) loading is not required for either male or female competitive swimmers. Swim races are high intensity over a short duration and the body will burn carbohydrate as the preferred, master fuel, regardless of gender.

For STR: We need additional research in swimming on women and not just their male counterparts. We already note significant differences in injury based on specific stroke technique. More work needs to be done on male-female differences in every sport.

Abby Knox is a Registered Dietitian & Sports Nutritionist. She is also a Swim Coach  (Okotoks Mavericks Swimming) and author of Eat Right, Swim Faster. Abby’s course, Nutrition for Training and Competition, can be purchased at https://isca.courselaunch.com/catalog/43.

If you are interested in exploring this topic, Knox provided the list of references below.

REFERENCES

1. Walker JL, Heigenhauser GJF, Hultman E, Spriet LL. Dietary carbohydrate, muscle glycogen content, and endurance performance in well-trained women. J Appl Physiol. 2000;88(6):2151-8.
2. Tarnopolsky MA, Atkinson SA, Phillips SM, MacDougall JD. Carbohydrate loading and metabolism during exercise in men and women. J Appl Physiol. 1995;78(4):1360-8.
3. Tarnopolsky MA, Zawada C, Richmond LB, Carter S, Shearer J, Graham T, et al. Gender differences in carbohydrate loading are related to energy intake. J Appl Physiol. 2001;91(1):225-30.
4. James AP, Lorraine M, Cullen D, Goodman C, Dawson B, Palmer TN, et al. Muscle glycogen supercompensation: absence of a gender-related difference. Eur J Appl Physiol. 2001;85(6):533-8.
5. Paul DR, Mulroy SM, Horner JA, Jacobs KA, Lamb DR. Carbohydrate-loading during the follicular phase of the menstrual cycle: effects on muscle glycogen and exercise performance. Int J Sport Nutr Exerc Metab. 2001;11(4):430-41.
6. Jeukendrup AE, Saris WHM. Fat as a fuel during exercise. In: Berning JR, Steen SN, eds, Nutrition for Sport & Exercise, 2nd ed. Aspen Publishers, 1998.
7. Phinney SD, Bistrian BR, Evans WJ, et al. The human metabolic response to chronic ketosis without caloric restriction: preservation of submaximal exercise capacity with reduced carbohydrate oxidation. Metabolism. 32:769-776, 1983.
8. Lambert EV , Speechly DP, Dennis SC, Noakes TD. Enhanced endurance in trained cyclists during moderate intensity exercise following 2 weeks adaptation to a high fat diet. Eur J Appl Physiol. 69:287-293, 1994.
9. Stellingwerff T, Spriet LL, Watt MJ, et al. Decreased PDH activation and glycogenolysis during exercise following fat adaptation with carbohydrate restoration. Am J Physiol Endocrinol Metab 290: E380-8, 2006. 
10. Burke LM, Kiens B. Fat adaptation for athletic performance: the nail in the coffin? J Appl Physiol. 100: 7-8, 2006.
11. Havemann L, West S, Goedecke JH, et al. Fat adaptation followed by carbohydrate-loading compromises high-intensity spring performance. J Appl Physiol. 100: 194-202, 200

Swimming through injury pain can delay recovery and in many cases may cause more damage. Swimming through conditioning pain, on the other hand, is part of training. Because of these differences, it is critical to identify the cause of shoulder pain.

Characteristics of pain caused by injury are:

• Localized pain that can be pinpointed at the front of the shoulder
• Tenderness in a specific area when gently palpated with the thumb
• A dramatic increase in pain when the arm is lifted overhead and inwardly rotated
• Noticeable restriction in range of motion

Characteristics of pain caused by conditioning are:

• General soreness throughout an entire muscle
• Pain that does not severely increase as the arm is elevated and inwardly rotated
• Little or no restriction in the range of motion

Coming soon: Swimming Without Pain by Rod Havriluk, Ph.D., p.88

Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a possible injury or persistent pain.

When scientific information doesn’t seem useful to coaches or swimmers, they may turn instead to information that is readily accessible, explained in familiar terminology, and which has demonstrated applicability. That information can encourage them to model the fastest swimmers and the most successful teams. For example, the “noticeable” (i.e. obvious) mechanics of an Olympic champion are often modeled. The weakness of this approach is that the characteristic technique elements of a champion are not always effective.

For wholesale adoption of an individual’s traits, a performance must be so outstanding that it’s the equivalent of “teaching a pig to fly” (Brewer, 1976). For example, in a 50 m race a swimmer would have to beat the field by several body lengths to meet this oft used “statistical” standard. Since this race is usually determined by a small fraction of a body length, even the fastest Olympians can’t be classified as “flying pigs.” The danger in modeling a champion who is less than a flying pig, is that his or her success may be due to an attribute such as size, strength, or pain tolerance –  and not technique.

Fortunately for swimmers and coaches alike, science can – and does- reliably determine the relative impact of specific factors on performance. It’s time to apply proven, science-based information — and time to forget about those flying pigs!