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Do testosterone levels respond to heavy resistance exercise?
Previous research has indicated that acute, heavy resistance exercise increases serum Testosterone concentration after a threshold amount of work has been performed (36). In addition, this elevation is seen in the recovery period from the resistance exercise workout(56, 57). Resistance exercise has been shown to stimulate muscle strength and hypertrophy (62, 90), which is in part due to increases in testosterone. Post exercise increases may be due in part to the adaptation of steroid synthesis and / or secretory capacities of the Ley dig cells(56). Another reason for the increase may be a reduced hepatic clearance of testosterone or an alteration of tes-ticular blood flow (91). Hypertrophy resulting from resistance exercise is primarily due to muscular protein accretion (30).
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