Part 2: Resistance Training

Damon McCune, ABD, MS, RDN, LD, Founder of Allied Performance, LLC, Co-Author of The Vertical Diet

For many, there exists some confusion surrounding how to best incorporate resistance training into an endurance training program. There are legitimate concerns for gaining muscle mass:  it’s heavy, it’s energy expensive, too much can reduce mobility, you don’t want to develop overuse injury from the additional training, and it’s not specific to endurance [1-8] … or is it?

There is definitely a bell curve in terms of how much muscle mass an endurance athlete carries and their performance output.  Muscle = Speed … to a point. Too much muscle can slow you down, not enough can prevent you from reaching your personal best time [1-14]. The bottom line is that there will be a “sweet-spot” level of muscle mass for every athlete that will need to be determined on an individual basis with help from a coaching. That optimal level will most likely not be achieved through cardiovascular style training alone, so resistance training is still a very important component of any endurance training strategy. But what does that look like?

How can you incorporate these training strategies for your goals?

  1. Incorporate at least 2 resistance training sessions per week focusing on major muscle groups.
  2. Perform 2-3 sets using a load that only allows you to complete 10-15 full-range repetitions per set.
  3. If possible, separate endurance and resistance training sessions. Prioritize endurance training first if unable to separate.
  4. Consult coaching staff to discuss what approach might be best for your individual situation.

In general terms, there is strong evidence to suggest that athletes should include at least 2 resistance training sessions per week focusing on major muscle groups [15-20]. Ideally, the minimal intensity would be greater than 40% 1 rep max (1RM) [20] and the maximum intensity would be no more than 75% of 1RM [8, 10, 11, 16, 19-22]. I’m not suggesting you rush out and attempt a 1RM to figure out your intensity. The risk for injury is too great so please don’t. In simpler terms, you should be working with enough resistance to perform at least 10, but cannot complete more than 20 repetitions. More does not always mean better, and for most athletes, keeping the repetition range between 10-15 works well. Perform 2-3 sets of 10-15 reps for the major muscle groups at least twice a week and continue with your endurance training [16, 18, 20, 22-27]. Logistically, since the endurance training is the priority, I would suggest performing the resistance training after the endurance training if you are unable to split them apart. Everyone is different and there are many ways to split training. I recommend consulting your coaching staff to determine the best strategy for you.

Now that you’ve demolished your training, you need to replenish. Carbohydrates and quality protein are crucial for maximizing the efforts that you put in while training. Additionally, you will want sources that replenish the micronutrients that were lost in your sweat, including sodium, calcium, and iron among others. Consuming sufficient carbohydrates will replace glycogen and allow for the protein to do what it is intended to do which is repair tissue. That is why you often hear carbohydrates referred to as, “protein sparing”.

The data appears to support a range of 2:1 to 4:1; carbohydrate:protein ratios for post workout recovery [28-36]. That means if you consume 25 grams of high-quality protein, you would aim to consume between 50-100 grams of carbohydrates. Low-fat chocolate milk fits perfectly into this ratio by providing high-quality complete protein, simple carbohydrates, and electrolytes such as calcium and sodium to begin to replace what was lost during activity. If you are trying to maximize glycogen replenishment from carbohydrate, use simple carbohydrate and aim for .7 grams per pound of bodyweight in the first hour following activity and continue to eat 0.35-0.7 gram per pound each hour over the next three hours [34, 37-44].

If you prefer to eat, rather than drink, a meal following activity, that is completely fine. Lean, animal proteins from items such as beef are a nutrient-dense source of nutrients including protein, iron, zinc, and magnesium. White meats like chicken and turkey are great for protein, but you won’t be getting as many micronutrients. That doesn’t mean that you shouldn’t eat them, but it is important to include some quality sources of heme iron in the diet especially if you are an adult woman who is running a lot. The combination of hematuria along with menstruation can put women participating in impact activities at a higher risk for developing anemia.

Having muscular strength can enhance your endurance training performance if incorporated appropriately into training.  Although, just as we discussed in Part 1 of the series, there are many roads to the same destination so you will need to assess what strategy fits best for your needs and goals.

 

References
  1. Abboud, G.J., et al., Effects of load-volume on EPOC after acute bouts of resistance training in resistance-trained men. J Strength Cond Res, 2013. 27(7): p. 1936-41.
  2. Benton, M.J., G.T. Waggener, and P.D. Swan, Effect of Training Status on Oxygen Consumption in Women After Resistance Exercise. J Strength Cond Res, 2016. 30(3): p. 800-6.
  3. Buitrago, S., et al., Physiological and metabolic responses as function of the mechanical load in resistance exercise. Appl Physiol Nutr Metab, 2014. 39(3): p. 345-50.
  4. Burrup, R., et al., Strength training and body composition in middle-age women. J Sports Med Phys Fitness, 2018. 58(1-2): p. 82-91.
  5. Carroll, K.M., et al., Skeletal Muscle Fiber Adaptations Following Resistance Training Using Repetition Maximums or Relative Intensity. Sports, 2019. 7(7): p. 169.
  6. Farinatti, P., A.G. Castinheiras Neto, and P.R. Amorim, Oxygen Consumption and Substrate Utilization During and After Resistance Exercises Performed with Different Muscle Mass. Int J Exerc Sci, 2016. 9(1): p. 77-88.
  7. Greer, B.K., et al., EPOC Comparison Between Isocaloric Bouts of Steady-State Aerobic, Intermittent Aerobic, and Resistance Training. Res Q Exerc Sport, 2015. 86(2): p. 190-5.
  8. Hollings, M., et al., The effect of progressive resistance training on aerobic fitness and strength in adults with coronary heart disease: A systematic review and meta-analysis of randomised controlled trials. Eur J Prev Cardiol, 2017. 24(12): p. 1242-1259.
  9. Gentil, P., et al., Effects of equal-volume resistance training performed one or two times a week in upper body muscle size and strength of untrained young men. J Sports Med Phys Fitness, 2015. 55(3): p. 144-9.
  10. Haun, C.T., et al., Muscle fiber hypertrophy in response to 6 weeks of high-volume resistance training in trained young men is largely attributed to sarcoplasmic hypertrophy. PLoS One, 2019. 14(6): p. e0215267.
  11. Hendrickson, N.R., et al., Combined resistance and endurance training improves physical capacity and performance on tactical occupational tasks. Eur J Appl Physiol, 2010. 109(6): p. 1197-208.
  12. Suarez, D.G., et al., Phase-Specific Changes in Rate of Force Development and Muscle Morphology Throughout a Block Periodized Training Cycle in Weightlifters. Sports (Basel), 2019. 7(6).
  13. Vianna, J.M., et al., Aerobic and Anaerobic Energy During Resistance Exercise at 80% 1RM. J Hum Kinet, 2011. 29a: p. 69-74.
  14. Vikmoen, O., et al., Strength training improves cycling performance, fractional utilization of VO2max and cycling economy in female cyclists. Scand J Med Sci Sports, 2016. 26(4): p. 384-96.
  15. Saeidifard, F., et al., The association of resistance training with mortality: A systematic review and meta-analysis. Eur J Prev Cardiol, 2019: p. 2047487319850718.
  16. Schoenfeld, B.J., et al., Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training: A Systematic Review and Meta-analysis. J Strength Cond Res, 2017. 31(12): p. 3508-3523.
  17. Schoenfeld, B.J., D. Ogborn, and J.W. Krieger, Effects of Resistance Training Frequency on Measures of Muscle Hypertrophy: A Systematic Review and Meta-Analysis. Sports Med, 2016. 46(11): p. 1689-1697.
  18. Schoenfeld, B.J., D. Ogborn, and J.W. Krieger, Dose-response relationship between weekly resistance training volume and increases in muscle mass: A systematic review and meta-analysis. Journal of Sports Sciences, 2017. 35(11): p. 1073-1082.
  19. Schoenfeld, B.J., et al., Longer Interset Rest Periods Enhance Muscle Strength and Hypertrophy in Resistance-Trained Men. J Strength Cond Res, 2016. 30(7): p. 1805-12.
  20. Schoenfeld, B.J., et al., Effects of different volume-equated resistance training loading strategies on muscular adaptations in well-trained men. J Strength Cond Res, 2014. 28(10): p. 2909-18.
  21. Gomes, G.K., et al., High-Frequency Resistance Training Is Not More Effective Than Low-Frequency Resistance Training in Increasing Muscle Mass and Strength in Well-Trained Men. J Strength Cond Res, 2019. 33 Suppl 1: p. S130-s139.
  22. Schoenfeld, B.J., et al., Resistance Training Volume Enhances Muscle Hypertrophy but Not Strength in Trained Men. Med Sci Sports Exerc, 2019. 51(1): p. 94-103.
  23. Burgomaster, K.A., et al., Similar metabolic adaptations during exercise after low volume sprint interval and traditional endurance training in humans. J Physiol, 2008. 586(1): p. 151-60.
  24. Cadore, E.L., et al., Strength and endurance training prescription in healthy and frail elderly. Aging Dis, 2014. 5(3): p. 183-95.
  25. Gonzalez-Mohino, F., et al., The Effects of Interval and Continuous Training on the Oxygen Cost of Running in Recreational Runners: A Systematic Review and Meta-analysis. Sports Med, 2019.
  26. Keogh, A., et al., Prediction Equations for Marathon Performance: A Systematic Review. Int J Sports Physiol Perform, 2019. 14(9): p. 1159-1169.
  27. Menz, V., et al., Functional Vs. Running Low-Volume High-Intensity Interval Training: Effects on VO2max and Muscular Endurance. J Sports Sci Med, 2019. 18(3): p. 497-504.
  28. Hall, A.H., et al., Coingestion of carbohydrate and protein during training reduces training stress and enhances subsequent exercise performance. Appl Physiol Nutr Metab, 2013. 38(6): p. 597-604.
  29. Ivy, J.L., et al., Early postexercise muscle glycogen recovery is enhanced with a carbohydrate-protein supplement. J Appl Physiol (1985), 2002. 93(4): p. 1337-44.
  30. McCartney, D., B. Desbrow, and C. Irwin, Post-exercise Ingestion of Carbohydrate, Protein and Water: A Systematic Review and Meta-analysis for Effects on Subsequent Athletic Performance. Sports Med, 2018. 48(2): p. 379-408.
  31. Naclerio, F., et al., Carbohydrates Alone or Mixing With Beef or Whey Protein Promote Similar Training Outcomes in Resistance Training Males: A Double Blind, Randomized Controlled Clinical Trial. Int J Sport Nutr Exerc Metab, 2017: p. 1-28.
  32. Saunders, M.J., Coingestion of carbohydrate-protein during endurance exercise: influence on performance and recovery. Int J Sport Nutr Exerc Metab, 2007. 17 Suppl: p. S87-103.
  33. Stevenson, E.J., et al., Influence of high-carbohydrate mixed meals with different glycemic indexes on substrate utilization during subsequent exercise in women. Am J Clin Nutr, 2006. 84(2): p. 354-60.
  34. Tanaka, J.A., H. Tanaka, and W. Landis, An assessment of carbohydrate intake in collegiate distance runners. Int J Sport Nutr, 1995. 5(3): p. 206-14.
  35. Valentine, R.J., et al., Influence of carbohydrate-protein beverage on cycling endurance and indices of muscle disruption. Int J Sport Nutr Exerc Metab, 2008. 18(4): p. 363-78.
  36. Wax, B., et al., Effects of Carbohydrate Supplementation on Force Output and Time to Exhaustion During Static Leg Contractions Superimposed with Electromyostimulation. The Journal of Strength & Conditioning Research, 2012. 26(6): p. 1717-1723.
  37. Coyle, E.F., et al., Carbohydrate metabolism during intense exercise when hyperglycemic. J Appl Physiol (1985), 1991. 70(2): p. 834-40.
  38. Fuchs, C.J., J.T. Gonzalez, and L.J.C. van Loon, Fructose co-ingestion to increase carbohydrate availability in athletes. The Journal of Physiology, 2019. 597(14): p. 3549-3560.
  39. Jentjens, R.L. and A.E. Jeukendrup, High rates of exogenous carbohydrate oxidation from a mixture of glucose and fructose ingested during prolonged cycling exercise. Br J Nutr, 2005. 93(4): p. 485-92.
  40. Jentjens, R.L., et al., Oxidation of combined ingestion of glucose and fructose during exercise. J Appl Physiol (1985), 2004. 96(4): p. 1277-84.
  41. Jeukendrup, A.E., Carbohydrate and exercise performance: the role of multiple transportable carbohydrates. Curr Opin Clin Nutr Metab Care, 2010. 13(4): p. 452-7.
  42. Jeukendrup, A.E. and L. Moseley, Multiple transportable carbohydrates enhance gastric emptying and fluid delivery. Scand J Med Sci Sports, 2010. 20(1): p. 112-21.
  43. Reynolds, R.D., et al., Intakes of high fat and high carbohydrate foods by humans increased with exposure to increasing altitude during an expedition to Mt. Everest. J Nutr, 1998. 128(1): p. 50-5.
  44. Wu, C.L., et al., The influence of high-carbohydrate meals with different glycaemic indices on substrate utilisation during subsequent exercise. Br J Nutr, 2003. 90(6): p. 1049-56.

Damon McCune, ABD, MS, RDN, LD

Founder of Allied Performance and Co-Author of The Vertical Diet, Damon McCune is a Ph.D. Candidate in Exercise Physiology and Registered Dietitian. Over the last 15 years, Damon has had extensive experience in program development for some of the top athletes in the world in collaboration with leading medical professionals and researchers. Recently, Damon has served in roles as the Director of the Didactic Program in Nutrition and Dietetics at the University of Nevada, Las Vegas and Coordinator of Performance Nutrition for UNLV Athletics. Damon is also the former President of the Southern Nevada Dietetic Association. In his multifaceted roles, Damon has developed mechanisms to advance exercise science and nutrition education and broaden the reach of that information to optimize health and performance by incorporating simple, sensible, and sustainable training and nutritional techniques into a balanced lifestyle.