NCT02902315

Antioxidants Combined With Cryotherapy on Inflammatory Response After Resistance Exercise in Untrained Volunteers

Vitamins C and E Combined With Cryotherapy on the Pain, Oxidative Stress and Inflammatory Response After Resistance Exercise Session in Untrained Volunteers

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 26 (actual)
• Sponsor: Universidade Federal de Santa Maria · Academic / Other
• Sex: Male
• Age: 20 Years – 35 Years
• Healthy volunteers: Accepted

Summary

Acutely resistance exercise induces inflammatory responses and leukocytosis arising of oxidative stress, that clinically manifested by pain and/or delayed onset muscle soreness (DOMS). Beginners in resistance exercise programs are more vulnerable to the effects of oxidative stress as they exhibit lower antioxidant capacity, greater lipid peroxidation and present increased perception of pain after exercises that may lead to abandonment the exercises practice. Vitamins C and E are exogenous antioxidants which are able to prevent damages caused by oxidative stress. Cryotherapy decreases temperature and reduced generation of reactive oxygen species. The aim of the present research are to investigate the effects of the concomitant of vitamins and of cryotherapy on leukocytosis, inflammatory markers, oxidative stress parameters and pain in untrained individuals submitted to a resistance exercise session.

Detailed description

The regular practice of physical exercises promotes anti-inflammatory effects, which reduces the mortality from all causes, especially by cardiovascular diseases. On the other hand, physical exercise induces acute inflammatory responses. Acute resistance exercises provoke mechanical and metabolic stress which may vary depending on the intensity, specificity, volume and workload. During these exercises, reactive oxygen and nitrogen species (RONS) are formed and, when its production exceeds the antioxidant enzymatic capacity (Superoxide dismutase, Catalase and Glutathione peroxidase) and non-enzymatic capacity (vitamins A, C, E and uric acid) results in oxidation of cell constituents. This state of oxidative stress promotes one inflammatory response, activation and mobilization of circulating white blood cells and induce a transitory leukocytosis, that are observed during and immediately after resistance exercises. The local neutrophilia induces the amplification of inflammatory response by feedback resulting in activation and/or mobilization of the more white blood cells. This sequence of physiological events leads to muscular remodeling although, during such process, occur functional insufficiency and the sensation of pain and/or delayed onset muscular soreness (DOMS), which deserves special attention, once may lead to interruption or abandonment of exercises, especially concerning beginners in this practice. Numerous preventive approaches have been studied intending to minimize the inflammatory response caused by resistance exercises, including the supplementation with vitamins C (ascorbic acid) and E (alfa-tocopherol). These vitamins are exogenous antioxidants which are able to prevent damages caused by RONS and consequently attenuate the oxidative damage induced by resistance exercises. Cryotherapy is defined as the therapeutic application of any substance that removes heat from the body, thus lowering the temperature of tissues. Immersion in cold water (≤ 15ºC) is a common method of heat reduction. Cryotherapy attenuates microvascular dysfunction, and decreases temperature, metabolism and oxygen demand in the electron transport chain. As a consequence, lower amounts of RONS are produced less damage was caused to adjacent molecules. The aim of the present research are to investigate the effects of the concomitant supplementation of vitamins (C and E) and cryotherapy (immersion in water at 15ºC) on leukocytosis, inflammatory markers, oxidative stress parameters and pain in untrained individuals submitted to a resistance exercise session.

Conditions

• Inflammation
• Oxidative Stress
• Pain

Interventions

Type	Name	Description
OTHER	Cryotherapy	The intervention will consist of the application of hypothermia by immersion of the lower limbs of water on individuals to 15ºC for a period of 10 minutes immediately after the exercise protocol.
OTHER	Vitamins C and E	The session of resistance exercises with intervention will be based on the supplementation with vitamin C (1000 mg) and vitamin E (800 IU) by oral intake (100mL of water) 40 minutes before basal blood collection.
OTHER	Vitamins C and E associated with cryotherapy	The session of resistance exercises with intervention will be based on the supplementation with vitamin C (1000 mg) and vitamin E (800 IU) by oral intake (100mL of water) 40 minutes before basal blood collection. The intervention will consist of the application of hypothermia by immersion of the lower limbs of water on individuals to 15ºC for a period of 10 minutes immediately after the exercise protocol.
OTHER	Placebo	The volunteers from placebo exercise session will receive two pills (containing wheat flour) and the remaining procedures were conserved.

Timeline

• Start date: 2017-01-04
• Primary completion: 2017-07-10
• Completion: 2017-07-12
• First posted: 2016-09-15
• Last updated: 2017-07-17

Locations

1 site across 1 country: Brazil