When young male wrestlers do bench press exercises with only 1 minute of rest between sets, they perform fewer repetitions in later sets compared to when they rest for 3 minutes between sets.
Mechanism
Synthesis from 1 study
Doing bench presses with only 1 minute of rest between sets causes waste products to build up in the muscles, making them weaker and slowing down the signals from the brain that tell the muscles to keep working. After three sets, this buildup is too much to overcome, so you can’t do as many reps....
Most probable mechanism
When you do push-ups with very little rest, your muscles build up waste products like lactic acid and hydrogen ions. These make it harder for the muscle fibers to contract strongly and also mess with the signals from your brain telling your muscles to keep going. By the third set, this buildup is worse with only 1 minute of rest, so you can’t push as many times as when you rest longer.
Metabolic byproducts such as hydrogen ions, inorganic phosphate, and lactate accumulate in skeletal muscle during repeated high-intensity contractions.
Accumulated hydrogen ions lower intracellular pH, reducing calcium ion binding to troponin and impairing cross-bridge cycling efficiency in muscle fibers.
Metabolic accumulation activates group III/IV muscle afferents, which inhibit alpha motor neuron output via spinal reflex pathways, reducing motor unit recruitment.
Reduced motor unit recruitment and impaired contractile function combine to decrease the number of repetitions possible in subsequent sets under short rest conditions.
Evidence from Studies
Supporting (1)
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Contradicting (0)
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