Exercise is a challenge for our body’s homeostasis. As such, athletic performance and training require an elevated level of cellular responsiveness and adaptation. Considering this, micronutrients are essential regulators of energy production, repair, and muscle upkeep. Nutritional supplementation in athletes may potentiate tissue repair, support the immune system, and modulate oxidative stress and inflammation. These benefits mentioned above can support athletic performance if applied correctly while considering cellular and genetic responses to exercise.
Table of Contents
Genetic expression and recovery
IL6 and IL6R
One crucial part of an exercise and athletic performance is recovery. The genetic expression of specific SNPs and their association with exercise recovery has been studied elsewhere. Gene codes for pro-inflammatory cytokines and their receptor have a tight association with an exercise-induced mechanical load. Also, they are both crucial markers for inflammation and elevated CRP levels. In the specific case of IL6, the C allele has a stronger association with elevated CRP. On the other hand, a C allele in the IL6R gene would result in muscular fatigue and prolonged recovery after exercise.
Â C- reactive protein is one of the most common inflammatory markers; however, it is also a key player in activating the innate immune system. CRP is the gene encoding for this protein. When a patient has the G allele, it may be linked to higher CRP levels and inflammation. In the athletic context, this allele reflects in the requisition of longer recovery times.Â
An athlete with an A allele in this encoding gene can have an acute inflammatory reaction after an intense training session. TNFA is a potent pro-inflammatory cytokine with a tight correlation with elevated CRP levels after exercise.Â
Consistent training is linked to inducing oxidative stress, tis is due to a temporary redox balance towards a more oxidized state. Continuous skeletal muscle cell activation requires increased oxygen consumption, as well as elevated levels of reactive oxygen species (ROS) and reactive nitrogen species (RNS). This reaction takes a toll on the antioxidant defenses, resulting in oxidative damage of proteins and DNA. Nevertheless, our body can balance this reaction by upregulating the antioxidant enzymatic systems, including superoxide dismutase (SOD) and catalase (CAT).
The duration, mode, and intensity of exercise can vary greatly and affect athletes differently. Nutritional status, age, gender, genetics, and fitness levels interact to determine an individual’s athletic performance and endurance. SOD2 is the encoding gene for the SOD antioxidant enzyme. In the athletic complex, SOD is crucial to minimize muscular fatigue and modulates mitochondrial oxidative stress. The literature shows that an individual with a C allele is prone to have higher levels of oxidative stress after intense exercise.
This gene encodes Nitric Oxide Synthase (NOS), an enzyme family catalyzing Nitric Oxide (NO) production. As a cellular signaling molecule, NO modulates vascular tone, insulin secretion, and peristalsis. The critical role of NO in athletic performance is its regulatory properties on blood vessel constriction and resistance. Genetic research shows that those athletes with a T allele have an increased concentration of free radicals and oxidative stress.
Exploding your potential and identifying weaknesses is the main purpose of DNA testing. Indeed, the effectiveness of training and sporting performance is affected by key genetic areas. The DNA profile technology helps to improve the training strategy, nutritional supplementation, and recovery techniques that will support the athletic performance of our patient.
Nutritional Supplementation and Genetic Expression
Micronutrients such as Vitamin C and D and active nutritional compounds like glutathione, thiols, metallothioneins, and lipoid acid work with the enzymatic systems CAT, SOD, and GPX. As the training load increases oxidative stress in a sports context, nutritional supplementation becomes essential for the athlete’s recovery. Knowing the athlete’s genotype, specific training, and baseline oxidative stress markers has become a noticeable topic in the research literature. In addition, this information has brought light to the benefits of proper nutritional supplementation in those athletes with genotypes associated with higher oxidative stress levels.
In 2020, an investigation was performed to observe the changes in the genetic expression of elite handball players before and after an 8-week multivitamin/ mineral supplementation. This study compared 13 elite handball players to 13 sedentary controls. Furthermore, their genetic profile was measured at baseline, after an 8-week supplementation and 8-weeks after the absence of supplementation. The results show that elite players had upregulation of those genes encoding for anti-inflammatory and antioxidant enzymes after an 8-week supplementation. However, at baseline, these players showed increased levels of inflammatory genes such as IL6 and IL6-R.
Another study performed in Waterpolo players measured the oxidative stress effects on athletes before and after acute intense exercise. This study reported the genotypes of 28 players (SOD2 A16V, CAT âˆ’844 G>A, and GPx-1 rs1800668 C>T). This study shows a significant decrease in antioxidant enzyme activity, blood antioxidant potential, and a thiol depletion after exercise. Also, those players with CAT âˆ’844 GA or GPx1 CT genotype had increased derivates of reactive oxygen metabolites and elevated levels of GPx and CAT posterior to exercise.
The depleted antioxidant enzymes need to recover with the help of vitamins, active nutritional compounds, and minerals. Indeed, nutritional supplementation is essential for an athlete’s recovery. The information provided by DNA testing is a magnificent tool to recognize the different genotypes interfering with the athletic endurance of our patients. Carrying one of these alleles does not mean poor performance. It means that the athlete may need a tailored recovery program, with proper nutritional supplementation, to improve results and promote wellbeing. – Ana Paola RodrÃguez Arciniega, MS
Vecchio, Mercurio et al. “The Oxidative Stress Response in Elite Water Polo Players: Effects of Genetic Background.”Â BioMed research internationalÂ vol. 2017 (2017): 7019694. doi:10.1155/2017/7019694
Molina-LÃ³pez, Jorge et al. “Effect of 8-week of dietary micronutrient supplementation on gene expression in elite handball athletes.”Â PloS oneÂ vol. 15,5 e0232237. 1 May. 2020, doi:10.1371/journal.pone.0232237
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Dr. Alex Jimenez DC, MSACP, CCST, IFMCP*, CIFM*, CTG*
Licensed in Texas & New Mexico
The information herein on "Athletes: Nutritional Supplementation and its effect on Genetic Expression" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.
Our information scope is limited to Chiropractic, musculoskeletal, physical medicines, wellness, contributing etiological viscerosomatic disturbances within clinical presentations, associated somatovisceral reflex clinical dynamics, subluxation complexes, sensitive health issues, and/or functional medicine articles, topics, and discussions.
We provide and present clinical collaboration with specialists from various disciplines. Each specialist is governed by their professional scope of practice and their jurisdiction of licensure. We use functional health & wellness protocols to treat and support care for the injuries or disorders of the musculoskeletal system.
Our videos, posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate to and directly or indirectly support our clinical scope of practice.*
Our office has reasonably attempted to provide supportive citations and has identified the relevant research study or studies supporting our posts. We provide copies of supporting research studies available to regulatory boards and the public upon request.
We understand that we cover matters that require an additional explanation of how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez, DC, or contact us at 915-850-0900.
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Dr. Alex Jimenez DC, MSACP, RN* CIFM*, IFMCP*, ATN*, CCST
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