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Full-Text Articles in Life Sciences
Can A Spider Web Be Too Sticky? Tensile Mechanics Constrains The Evolution Of Capture Spiral Stickiness In Orb-Weaving Spiders, Todd Blackledge, Ingi Agnarsson
Can A Spider Web Be Too Sticky? Tensile Mechanics Constrains The Evolution Of Capture Spiral Stickiness In Orb-Weaving Spiders, Todd Blackledge, Ingi Agnarsson
Todd A. Blackledge
Orb-weaving spiders rely on sticky capture threads to retain prey long enough to be located and attacked. The evolution of viscid silk is associated with the high diversity of araneoid orb-weaving spiders, in part because it is cheaper to produce than the primitive dry cribellate fibrous adhesive used by deinopoid orb-weaving spiders. Unlike cribellate threads, viscid glue contributes little to the tensile strength of the capture spiral it decorates. However, viscid silk utilizes a unique suspension bridge mechanism, absent in cribellate silk, which increases total stickiness by recruiting the adhesion of multiple glue droplets. Here, we analyze the relationship between …
The Effect Of Detraining On Muscle Strength And Cross-Sectional Area Following Unilateral Resistance Training, Herbert Groeller, John Sampson
The Effect Of Detraining On Muscle Strength And Cross-Sectional Area Following Unilateral Resistance Training, Herbert Groeller, John Sampson
John Sampson
Muscle strength appears well preserved following short periods of detraining, despite a decline in muscle cross-sectional area and muscle activation. PURPOSE: This study determined the effect a 12-week unilateral elbow flexor resistance training regimen followed by 8 weeks of detraining on muscle cross-sectional area, muscle activation, and dynamic and static strength in trained and non-exercising contralateral limbs. METHODS: Ten males volunteered for the investigation and completed a 4-week pre-treatment training period (50-80%1RM) prior to commencing the experimental resistance training regimen. Subjects attended 3 sessions per week over 12 weeks of experimental training wherein they exercised at 85%1RM. Each subjects trained …