Post-Workout Protein

Physical activity is an important part of a healthy lifestyle. Getting enough cardio and strength training throughout the week can lower your risk for certain diseases and even lift your mood (AHA, 2015). Currently, the American Heart Association recommends that adults participate in a minimum of 150 minutes of moderate physical activity or 75 minutes of intense physical activity each week. But just going to the gym is not enough. Nutrition plays a critical role in making sure your body is getting all the benefits of physical activity. You need to fuel your body before and replenish your body after working out. Getting enough protein after a workout helps your body build muscle, in turn aiding in weight loss by increasing your basal metabolic rate. 

2017-02-18 00.00.00-12_preview.jpeg

Why is protein important after a workout?  Following a difficult session of either weight training or aerobic exercise, your body is likely to break down protein faster than it builds it if you do not consume protein to help counteract this effect (Beck, 2015). Eating protein after a workout creates a better balance by helping your body build muscle. Aside from increasing muscle mass, benefits of post-workout protein include improvement in physical performance and a decrease in recovery time (Stark, 2012).

How much protein do I need? How much protein your body needs depends on your body weight, activity level and type of activity (Phillips, 2007). The Recommended Dietary Allowance for protein for non-athlete adults over 18 years of age is approximately 56 grams per day for males and 46 grams per day for females ("Dietary Reference Intakes: Macronutrients"). This is calculated using a value of 0.8 grams of protein per kilogram of body weight per day (g/kg/d). However, newer research suggests that this recommendation has been set too low. Athletes may need more protein than this depending on how often they exercise and the type of exercise they perform (Phillips, 2007). The recommended intake levels for protein for adults participating in different types of physical activity are as follows (Phillips, 2007)*:

·       Endurance athletes: 1.2 to 1.4 g/kg/d

·       Weight-training athletes: 1.6 to 1.7 g/kg/d

*Recommended intake levels for athletes are based on the needs of male athletes. Limited data are currently available for female athletes.

It is important to keep in mind that eating more protein than your body needs is not likely to provide any additional benefit. Also, be sure to avoid substituting protein for other energy yielding nutrients your body needs, such as carbohydrates and fats (Phillips, 2007). In fact, post-workout carbs are equally important as post-workout protein, with the recommended ratio being 1:3 for protein: carbohydrates. Though high-quality protein foods are always a good option, I personally prefer to consume a protein shake plus a piece of fruit within 30 minutes post-workout. If you are interested in trying protein shakes for the first time, feel free to contact me for a recommendation on what type of protein powder to purchase!

Sources:

American Heart Association Recommendations for Physical Activity in Adults. (2015, August 17). Retrieved October 5, 2015, fromhttp://www.heart.org/HEARTORG/GettingHealthy/PhysicalActivity/FitnessBasics/American-Heart-Association-Recommendations-for-Physical-Activity-in-Adults_UCM_307976_Article.jsp

Beck K, Thomson J, Swift R, Hurst P. Role of nutrition in performance enhancement and postexercise recovery. J Sports Med. 2015; 6:259-267.

Dietary Reference Intakes: Macronutrients. (n.d.). Retrieved November 19, 2015, from https://iom.nationalacademies.org/~/media/Files/Activity Files/Nutrition/DRIs/DRI_Macronutrients.pdf

Phillips S, Moore D, Tang J. A Critical Examination of Dietary Protein Requirements, Benefits, and Excesses in Athletes. Intl J Sport Nutr and Exer Metab. 2007;17:S58-S76.

Stark M, Lukaszuk J, Prawitz A, Salacinski A. (2012). Protein timing and its effects on muscular hypertrophy and strength in individuals engaged in weight-training. J Int Soc Sports Nutr Journal of the International Society of Sports Nutrition, 9(1), 54. DOI: 10.1186/1550-2783-9-54