Showing posts with label lifestyle. Show all posts
Showing posts with label lifestyle. Show all posts

Monday, 30 March 2015

Sleep cycles affect athletic performance

 
Sleep cycles affect athletic performance
Athletic performance can vary over the course of the day by up to 26%, depending on the athlete’s circadian rhythm, according to research published in the journal Current Biology. The study illustrates how important it is for athletes to be aware of their sleep cycle and leave time to adjust when travelling to another country to compete.

Circadian rhythms are internal cycles of around 24 hours that regulate various behavioural and physiological systems in the body. Different systems peak at different times of day so some people naturally prefer to be active earlier, while others are happier being active later. Sleep scientists call this your circadian phenotype.
“The key finding from this paper is that your circadian phenotype is important in determining the best time of performance for you,” said Shantha Rajaratnam, professor in psychology and sleep researcher at Monash University.
Professor Rajaratnam added that circadian types were partly influenced by the way we’re genetically wired, and partly by lifestyle and behavioural habits. In particular, our light-dark exposure plays an important role.
 
In the study, 20 athletes of similar age and fitness levels were selected to take part in a cardiovascular endurance test at six different times of the day. The participants represented the population levels of early (28%), intermediate (48%) and late (24%) circadian types.
 
Early phenotypes performed best in the earlier tests, followed by intermediates, and the late types peaked in the evening. Early and intermediate types had a 7% to 10% variation in their physical performance over the course of the day, but late types varied by up to 26%.
The study found the biggest factor in predicting performance was the time since when your body would naturally wake up.
Sports coaches seem to be realising the competitive edge that might be gained by working with athletes' circadian rhythm.
 
Professor Leon Lack from Flinders University worked with the Socceroos in the lead up to the 2006 World Cup. Flying in from their last game in South America, the team had only a few days to adjust for their evening qualifying match in Sydney in 2005. Dr Lack consulted with the team’s doctor to create a sleeping and light exposure plan for the players to expedite this process.
The Australian team went on to win in a memorable penalty shootout, with several saves made by Australian goalie, Mark Schwarzer.
“The team doctor discussed this with me afterwards and said that Mark Schwarzer was probably the most conscientious about keeping to the routine,” Professor Lack said.
 
Craig Duncan, senior lecturer at Australian Catholic University, is currently working with the national soccer team as the head of sport science for the Asian Cup.
“In every team I work with, we monitor sleep. It is very important and along with a balanced nutritional regime it is the foundation of recovery,” Dr Duncan said. “If players were having sleep issues, adjustments could be made to enhance the sleep quality and quantity.”
Disruptions to sleep affect the internal body clock. According to Professor Rajaratnam, the general consensus for adjusting to a new timezone is around one day per hour of time difference, although that can be achieved faster with increased light exposure at the appropriate times of day and light avoidance at other times.
 
For would-be athletes who struggle to make it to training in the morning, the key is adjusting activity and light exposure.
“If you are a definite evening type,” explained Professor Rajaratnam, “in theory you may be able to become more of a morning type by increasing the light exposure in the morning and minimising light exposure in the evening. This remains to be studied.”
This article was originally published on The Conversation. Read the original article.
 
Are you looking after YOUR sleep cycle?


Wednesday, 25 March 2015

Vegan Athletes: Performance and the Protein Myth

When you tell someone that you’re vegan, you’ll most likely be asked, “Where do you get your protein?” You’ll hear it a lot, actually. In their defence, most people really just don’t know because they are conditioned to think that meat = protein, and that plants do not. First things first, protein is not a food, it’s a nutrient. Meaning, there’s not only one definable food source of protein, like meat, just as dairy-based milk isn’t the only source of calcium. Those attitudes about our sources of nutrition are a clear reflection of the very basic, and biased, education we’ve been taught about nutrition and our food.

vegan athlete
 

Understanding Protein

Protein is made up of 20 amino acids that form by linking together. We can naturally produce 11 amino acids from chemicals already in our body, and these are called non-essential amino acids. The remaining 9 amino acids must be consumed in the foods we eat, and are called essential amino acids.
General guidelines suggest we consume 0.8 grams of protein for every kilogram we weigh (approximately 0.36 grams of protein per pound).
Athletes, however, will usually require more protein to match the needs of your muscles due to activity, and to aid in recovery. As an athlete, you will probably need more protein than someone who isn’t active because your lifestyle requires more from your muscles through training and recovery. Aim to consume approximately 1.3 – 1.8 grams of protein per kilogram you weigh.
High vegan protein foods are:
  • Tofu*
  • Edamame*
  • Tempeh*
  • Quinoa*
  • Seitan
  • Lentils
  • Black Beans
  • Kidney Beans
  • Chickpeas
  • Brown Rice
  • Oatmeal
  • Whole Grains
  • Buckwheat*
  • Amaranth*
  • Almonds
  • Cashews
  • Green Peas
  • Amaranth*
  • Almonds
  • Cashews
  • Green Peas
  • Leafy Greens
  • Chia Seeds*
  • Hemp Seeds*
  • Flax Seeds
  • Bean Sprouts
  • Nutritional Yeast
  • Spirulina*
  • Unsweetened Organic Soy Milk*

* food options that have all 9 essential amino acids
That is a great list of healthy proteins, and has excellent choices for vegan athletes! Some don’t contain all 9 essential amino acids, and that’s OK. Just eat a variety of these foods each day (and weekly) and your body will readily absorb and utilize all the essential amino acids they contain.
Some great combinations of foods that provide all 9 amino acids are:
  • beans and brown rice
  • peanut butter on whole grain bread
  • oatmeal with sliced almonds
  • pasta and green peas
  • lentils and nuts or seeds
  • chickpea “tuna” sandwiches on whole grain bread
 

Building (and Maintaining) Muscle

It’s important to realize that if you want to build muscle mass, you may need to eat more! The vegan diet will supply you with all the nutrients and protein your muscles need to grow, but since plant based whole foods are typically lower in calories, you may need to eat more to get enough caloric intake to build mass. Some new vegans say they are always hungry or lack energy, but that usually is directly due to them simply not eating enough. Our bodies thrive on plant based whole foods, so eat up!
Fuel your body on a regular schedule, approximately every 3-4 hours. This will allow your body to know that food is coming on a consistent basis, and it will therefore be less likely to store your food as fat. If you don’t eat regularly or skip meals a lot, your body will go into survival mode, and store the calories it gets.
Eat 2-3 hours before activity. This will allow you to eat a well balanced, energy boosting meal, while giving your body the time needed to digest enough and be ready for activity without feeling sluggish, full, or having stomach cramping.
Vegan athlete pioneer, bodybuilder, and the macronutrient breakdown for an active person might be:
70% of calories from carbohydrates
20% coming from protein
10% coming from fats
While the macronutrient breakdown for a bodybuilder, or someone focused specifically on building muscle, might be:
50% of calories from carbohydrates
30% coming from protein
20% coming from fats
Every person is different though, so trial and error is an expected part of the process for all athletes, not just vegans.

Performance

vegan athlete

What to Eat Before Activity

Keep your pre-workout meals simple and unprocessed. Your body will thrive best on plant based whole foods. Stay away from packaged, processed items, white breads and pastas, refined sugars, and salty or fried foods. Make sure to choose foods that your body (and performance) will thrive on, such as raw vegetables and fruits (cucumbers, mushrooms, spinach, bananas, dates, watermelon, grapes, and oranges), quinoa, beans, lentils, organic tofu or tempeh, and hydrated chia seeds.
Some of my common go-to foods (in different combinations) before training are beans, chickpeas, lentils, raw mushrooms, raw cucumbers, raw spinach, organic tofu or tempeh, brown rice, quinoa, steamed veggies, hummus, and a small amount of avocado.
Staying hydrated is also important for performance, recovery, and overall health, so make drinking water a priority.

The Role of Proper Recovery

The 30-60 minutes after activity is a critical window of time when you’re body is seeking the proper nutrients to begin the muscle repair process. Refuel with foods that are a 4:1 ratio, which is 4 grams of carbohydrates for every 1 gram of protein. Foods that are easy and quick to digest are key during this short window of time, and include tofu, smoothies, protein shakes, beans, lentils, and fruits.
Replenish lost electrolytes with alkaline foods to counter the acidic environment your body experiences after activity. Some great alkaline foods are leafy greens, kale, spinach, broccoli, peas, beets, lemons, watermelon, banana, pear, sweet potato, quinoa, tofu, chlorella, flax seed oil, and brown rice or wild rice.

Ensure You’re Getting Essential Minerals and Vitamins

When it comes down to it, when you feel your best you can truly get the best results for your efforts. Prioritizing your overall health is key because you’ll have the energy and focus needed to do what it takes reach your athletic goals and build your strong body. Below are just a few nutrients to be aware of.

Iron

Vegan or not, iron is important for all athletes because intense activity strips the body of small amounts of iron. Without proper iron in your diet, you can experience low energy and a general lethargic feeling.
There are two types of iron: heme (animal-based) and non-heme (plant-based). Non-heme iron may be absorbed at a lower rate, so just eat iron-rich foods along with foods that contain Vitamin C, and this will boost your ability to absorb iron. Coffee and tea can inhibit your ability to absorb iron, so try to avoid consuming these within an hour (before or after) of eating.
The approximate RDI intake of iron for active vegans is 18-33mg for women, and 11-14mg for men.
Some great sources of iron are dark leafy greens, quinoa, tofu, tempeh, lentils, beans, pumpkin seeds, oatmeal, grains, molasses, tomato sauce, broccoli, and fortified cereals.

Calcium

When we have an intense training session, we lose calcium through our sweat. Calcium is not only required for strong bones, but also needed for muscle contraction. Without it, we can experience muscle cramping.
The general recommended daily intake of calcium is 1000mg – 1300mg.
Some great sources of calcium are spinach, broccoli, bok choy, kale, almonds, edamame, flax seeds, tofu, fortified non-dairy milks, and kidney beans

Potassium

Another mineral that’s lost when we sweat, potassium is responsible for automatic muscle contractions and regulating overall body water. It’s also classified as an electrolyte, and is something that needs to be replenished after activity.
The general guideline suggests approximately 4.7gram each day.
Some great sources of potassium are bananas, oranges, dried apricots, potatoes, kale, and avocados.

Zinc

Zinc plays a role in muscle growth and repair, energy production, and keeping the immune system strong. Athletes should ensure they are getting zinc in their diet because it helps repair the micro tears in muscles after strenuous activity.
According to Jack Norris, RD, the recommended intake of Zinc is 11mg for men and 8mg for women.
Some great sources of Zinc are tofu, beans, chickpeas, lentils, beets, peanuts, and oatmeal.

B12

Getting enough vitamin B12 is a concern for vegans and non-vegans alike, especially for those 50 years and older. If you’re deficient, you can experience tiredness, weakness, easy bruising, nervous system damage, or anemia.
The general daily recommended intake of B12 for adults is 2.4 micrograms.
There are excellent sources of B12 for vegans, like fortified cereals, fortified non-dairy milks, Nutritional Yeast and of course, supplements are a great reliable, convenient option.
RELATED: Do Vegans Need to Take a B12 Supplement?
 
DID YOU KNOW? B12 IS FOUND IN MICROORGANISMS, PRIMARILY BACTERIA, IN WATER OR SOIL. THE ONLY REASON ANIMALS ARE A “SOURCE OF B12” IS BECAUSE THEY ARE EATING FORTIFIED FOOD AND/OR SOIL CONTAINING THESE MICROORGANISMS. SO, EATING MEAT IS NOT THE ONLY “NATURAL” WAY TO OBTAIN B12, AS SOME PEOPLE WILL CLAIM. THOSE WHO EAT MEAT ARE SUPPLEMENTING THEIR B12 TOO; THEY JUST CHOOSE TO DO SO VIA THE ANIMAL THAT HAS INGESTED IT FIRST.

Healthy Fats

I advocate for eating a high carbohydrate, low fat, and moderate protein diet. It’s essential that we eat some fats, and the healthiest sources are avocado, nuts, flax seeds, and almond/peanut butter.

The Plant Powered Difference

I consider myself an example of how being vegan improves performance. Over my 20+ years as a competitive athlete, from gymnastics to travel hockey to martial arts, I can compare and gauge the difference between my pre-vegan and vegan performances. I have more energy now than I did 10 years ago, my injuries heal faster, and as a female training with younger guys at my dojo, I not only keep up, but many times I can keep going and exceed their energy levels. It’s a great bonus to choosing a compassionate lifestyle!

Article source: http://www.yourdailyvegan.com/2015/03/17/vegan-athletes-performance-and-protein/
Photo Source: www.yourdailyvegan.com


"Any vegan athletes out there"