Effects of sequential bouts of resistance exercise on androgen receptor expression

Article Abstract:

Three sequential bouts of heavy-resistance exercise on serum total testosterone (TST), sex hormone-binding globulin (SHBG) and free androgen index (FAI), skeletal muscle androgen receptor (AR) mRNA and protein expression, and myofibrillar protein content are examined. These sequential bouts of heavy resistance exercise increases serum TST and are effective at up-regulating androgen receptor mRNA and protein expression that appears to correspond to subsequent increases in myofibrillar protein.

Testosterone, Hormones, Sex, Sex hormones

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Quantitative histology and MGF gene expression in rats following SSC exercise in vivo

Article Abstract:

The effect of muscle length on changes in mechano-growth factor gene expression and quantitative morphometry in rat skeletal muscle during stretch-shortening cycles (SSC) in vivo were investigated . Results strongly indicate that exposure to SSC at longer muscle lengths result in greater morphometric indices of inflammation and degeneration than SSC conducted at shorter muscle lengths or isometric contractions.

Risk factors, Inflammation, Histology, Pathological, Pathological histology, Degeneration (Pathology)

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Milk ingestion stimulates net muscle protein synthesis following resistance exercise

Article Abstract:

A study determines the response of net muscle protein balance following resistance exercise to ingestion of nutrients as components of milk. Findings indicate ingestion of milk following resistance exercise results in phenylalanine and threonine uptake, representative of net muscle protein synthesis, suggesting that whole milk might have increased utilization of available amino acids for protein synthesis.

Muscle proteins, Physiological absorption, Absorption (Physiology)

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