Differential IL 10 serum production between an arm-based and a leg-based maximal resistance test

Area of Science:

• Exercise Physiology
• Sports Science
• Biochemistry

Background:

• Bench press (arm-based) and half-squat (leg-based) exercises differ in muscle mass recruitment.
• Understanding exercise-induced physiological responses is crucial for training optimization.

Purpose of the Study:

• To compare the effects of maximal incremental strength tests via bench press versus half-squat.
• To analyze impacts on myocellular damage, oxidative stress, and inflammatory cytokine response.

Main Methods:

• Ten male athletes underwent incremental strength tests using bench press and half-squat protocols.
• Blood samples were collected pre-test, and at 15 minutes and 24 hours post-test.
• Markers for muscle damage (LDH, CK-MB), sarcomeric damage (α-Actin), lipid peroxidation, and cytokines (IL-6, IL-10, TNFα) were measured.

Main Results:

• Lactate dehydrogenase (LDH) and creatine kinase isoenzyme MB (CK-MB) were significantly higher after bench press compared to half-squat.
• No significant differences were observed in lipid peroxidation or α-Actin levels between the exercises.
• Interleukin-10 (IL-10) levels were elevated post-bench press at 24 hours, indicating a stronger anti-inflammatory response.

Conclusions:

• Arm-based exercises like the bench press may induce more severe muscle damage than leg-based exercises like the half-squat at equivalent workloads.
• Bench press elicits a greater anti-inflammatory response, as evidenced by elevated IL-10 levels, compared to the half-squat.
• These findings highlight distinct physiological adaptations to different exercise modalities, informing training and recovery strategies.