July 17, 2026Wellness

Why Magnesium supplements are crucial in Sports

Studies show that after strenuous physical activity, magnesium stored in the extracellular fluid is transferred to the body tissues where it is urgent

Importance of magnesium supplements in strength training

Magnesium (Mg) is one of the most abundantly found minerals in our body. Almost 50% of Mg is stored in our bones, rest 50% inside the cells, organs while almost less than 1% is found in the bloodstream.

Mg plays a central role in the dominance of neuronal as well as vasomotor activities, including bone formation, neuromuscular transmission, cardiac excitability, muscle contraction as well as glucose metabolism. Based on this intracellular magnesium, the calcium transport system regulates muscle contraction. When an individual is consuming 300mg of magnesium in their diet, the intestines are absorbing almost 120mg and excreting approx. 20 mg which is resulting in a net absorption of 100 mg.

How Magnesium helps in muscle recovery during exercise?

Studies show that after strenuous physical activity, magnesium stored in the extracellular fluid is transferred to the body tissues where it is urgently needed. This Mg reduction in the plasma or serum concentration is directly connected to the concentration of erythrocyte Mg commonly occurring after long term training. This suggests that prolonged exercise increases Mg requirement. Hence sometimes a substantial decrease in the Mg concentration causes hypomagnesemia and is observed after an intense and prolonged exercise whereas short yet intense bouts of exercise could lead to an increase in Mg concentration. Additionally, during exercise hypomagnesemia leads to a significant decrease in glucose levels determining a further decline in performance alongside an increase in lactate accumulation as well as increased muscle soreness. This is an entity of ultrastructural muscle damage which would occur after exercise.

Magnesium increases glucose as well as pyruvate levels in muscles, blood, brain thus decreasing and delaying the accumulation of lactate concentrations in the blood as well as muscle during exercise. Hence, magnesium is important for glucose homeostasis thus enhancing and increasing performance.

Moreover, if the serum Mg levels fall between normal ranges it is possible to feel pangs of muscle pain after intense exercise due to an intracellular magnesium deficiency. During strenuous exercises certain decrease in Mg levels would inhibit calcium release from the sarcoplasmic reticulum causing muscle soreness. Thus, it is important for physically active individuals as well as sport specialists in paying attention to magnesium supplements.

Apart from magnesium vitamin D also plays an important role in calcium homeostasis avoiding accumulation of lactic acid in muscles

Vitamin D and Magnesium are closely linked in the following ways:

• Vitamin D helps in magnesium absorption

• Magnesium is vital for Vitamin D synthesis, transport and activation

Magnesium’s role in skeletal muscle metabolism

Magnesium plays an important role in skeletal muscle health. Nutritional intake of Magnesium helps in regulating the balance between free radicals aiding anti-oxidant production with certain benefits for muscle tissue. Positive effects of the magnesium supplementation in athletes is the promotion of skeletal muscle function recovery after exercise induced fatigue as well as muscle soreness, thus fostering post exercising recovery. Also, known for its anti-inflammatory properties, it is helpful for exercise induced damage helping in post exercise recovery. It has been found that increasing the magnesium intake by 10-20% above any recommended dose two hours before exercise is beneficial for active individuals (Maria Grazia Tarsitano et al.).

Research evidence on the effect of Magnesium supplementation.

• Mg supplements help in complete muscle recovery especially for people involved in strenuous exercises. This is further dependent on factors like timing and dosage. Previous studies focused on magnesium supplementation shows its role in obesity, movement disorders as well as Ducchenne muscular dystrophy. Based on the effects of Mg supplements Steward et al have found that Mg supplementation mitigates exercise induced stress. This study has investigated the effects of 500 mg of MgO and stearate in capsule for 7 consecutive days on sports person on a low magnesium diet. The results have indicated beneficial effects on the blood glucose levels as well as muscle soreness in days where they have shown strenuous exercise (Steward et al., 2019).

• According to another study, magnesium supplementation helps in modulating glucose metabolism as well as inflammation which influences exercise performance as well as recovery. It shows that Mg supplementation has reduced the IL-6 response, enhancing recovery of blood glucose along with muscle soreness seen after strenuous exercise (Ana et al., 2023).

• Another double blinded between-group study based on the effects of magnesium supplementation shows that muscle soreness have been significantly reduced, alongside improved perceived recovery after magnesium supplementation alongside acute rating of perceived exertion and improved perceived recovery Mg supplementation compared to the placebo (Reno et al.).

• Further studies have shown that a positive association between magnesium, muscle recovery as well muscle performance is seen each of which play key roles in all sports improving the following

o Grip strength

o Lower leg- power

o Knee extension torque – indicator of quadriceps strength

o Ankle extension torque – corelates with balance stability

o Rotation

o Jumping performance

o Maximal isometric trunk flexion increasing core strength

Why is magnesium supplementation essential for sports enthusiasts?

Although proper nutrition is important for athletes to increase their performance during training and competitions, athletes still face nutrient deficiencies despite adequate nutrition. Vitamin D and Magnesium both are essential nutrients which play important roles in the performance, recovery as well as overall health in an athlete.

Vitamin D is important for the following roles in a sports enthusiast:

• Bone health – helping in calcium absorption, preventing stress fractures

• Muscle function- Preventing weakness and injury

• Respiratory health- reduces respiratory health

The magnesium requirement for a healthy adult is estimated to be 300-400 mg/day but evidence suggests that athletes might have higher magnesium needs as compared to sedentary persons.

Thus it can be concluded that magnesium helps in improving performance in athletes and sports enthusiasts aiding in muscle recovery working with calcium to avoid lactic acid accumulation or muscle cramps after rigorous exercise.

References

Carolina, Ana, et al. “The Integral Role of Magnesium in Muscle Integrity and Aging: A Comprehensive Review.” Nutrients, vol. 15, no. 24, 16 Dec. 2023, pp. 5127–5127, 10.3390/nu15245127.
Maria Grazia Tarsitano, et al. “Effects of Magnesium Supplementation on Muscle Soreness in Different Type of Physical Activities: A Systematic Review.” Journal of Translational Medicine, vol. 22, no. 1, 5 July 2024, 10.1186/s12967-024-05434-x.
Reno, Alyssum M., et al. “Effects of Magnesium Supplementation on Muscle Soreness and Performance.” Journal of Strength and Conditioning Research, vol. 36, no. 8, 1 Oct. 2020, https://pubmed.ncbi.nlm.nih.gov/33009349/, 10.1519/JSC.0000000000003827. Accessed 17 July 2026.
Steward, Charles James, et al. “One Week of Magnesium Supplementation Lowers IL-6, Muscle Soreness and Increases Post-Exercise Blood Glucose in Response to Downhill Running.” European Journal of Applied Physiology, vol. 119, no. 11–12, 17 Oct. 2019, pp. 2617–2627, 10.1007/s00421-019-04238-y.