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Electromyographic Comparison Of A Stability Ball Crunch With A Traditional Crunch, Eric Sternlicht, Stuart Rugg, Larissa Fujii, Keri Tomomitsu, Matt Seki
Electromyographic Comparison Of A Stability Ball Crunch With A Traditional Crunch, Eric Sternlicht, Stuart Rugg, Larissa Fujii, Keri Tomomitsu, Matt Seki
Stuart Rugg
The purpose of this study was to compare abdominal muscle activity while performing a crunch on a stability ball with a traditional crunch. Forty-one healthy adults (23 men and 18 women) participated in the study. The subjects performed the crunch with the ball in 2 positions, 1 with the ball at the level of the inferior angles of the scapula (SB-high) and 1 with the ball at the level of the lower lumbar region of the back (SB-low). Surface electromyography was recorded from the upper and lower portions of the rectus abdominis and the external oblique during each repetition. Electromyography …
Exercise-Mediated Regulation Of Hsp70 Gene Expression Following Exercise Training, C.W. Melling, David Thorp, Kevin Milne, Matthew Krause, Earl Noble
Exercise-Mediated Regulation Of Hsp70 Gene Expression Following Exercise Training, C.W. Melling, David Thorp, Kevin Milne, Matthew Krause, Earl Noble
Jamie Melling
An issue central to understanding the biological benefits associated with regular exercise training is to elucidate the intracellular mechanisms governing exercise-conferred cardioprotection. Heat shock proteins (HSPs), most notably the inducible 70-kDa HSP family member Hsp70, are believed to participate in the protection of the myocardium during cardiovascular stress. Following acute exercise, activation of PKA mediates the suppression of an intermediary protein kinase, ERK1/2, which phosphorylates and suppresses the activation of the heat shock transcription factor 1 (HSF1). However, following exercise training, ERK1/2 has been reported to regulate the transcriptional activation of several genes involved in cell growth and proliferation and …