Meeting Abstract 46-2  Tuesday, Jan. 5 10:45  Baseline CORT, what is it good for? Differences in stress responsiveness influence and obscure ‘baseline’ corticosterone values collected within 3 minutes of capture SMALL, TW*; SCHOECH, SJ; Univ. of Memphis; Univ. of Memphis twsmall@memphis.edu Plasma glucocorticoid (CORT) levels collected within 3 min of capture/handling are commonly believed to reflect pre-stressor […]

Meeting Abstract 45-4  Tuesday, Jan. 5 08:45  The effect of activation level on in vivo muscle lengths and velocities: do fibers always operate at their optima? HOLT, NC*; AZIZI, E; UC Irvine; UC Irvine natalie.c.holt@gmail.com Skeletal muscle fibers can only generate high forces and powers over a narrow range of lengths and velocities. Many morphological and physiological […]

Meeting Abstract 45-2  Tuesday, Jan. 5 08:15  Temperature dependence of muscle work is determined by load OLBERDING, J.P.*; DEBAN, S.M.; University of South Florida, Tampa; University of South Florida, Tampa jpolberding@mail.usf.edu The temperature dependence of muscle work has implications for whole-organism performance in behaviors involving muscle-powered movements in variable-temperature environments. Behaviors using elastic energy-storage mechanisms are thermally […]

Meeting Abstract 45-1  Tuesday, Jan. 5 08:00  Stretch shortening cycle protocols demonstrate the difference in eccentric properties of EDL and soleus muscles from wild type and mdm mice. HESSEL, AL*; NISHIKAWA, KC; Northern Arizona University, Flagstaff AZ alh385@nau.edu https://alhlabbench.wordpress.com/tag/salamanders/ During animal movement, muscle length oscillations are common. We used a stretch-shortening cycle (SSC) protocol that stimulated muscles […]

Meeting Abstract 45-3  Tuesday, Jan. 5 08:30  Skeletal muscle architecture determines propensity for muscle damage during eccentric contractions ABBOTT, E.M.*; AIKHIONBARE, I.; AZIZI, E.; Univ. of California, Irvine abbotte@uci.edu Skeletal muscles not only accelerate our bodies during movement, they also play a crucial role in deceleration. During decelerating tasks, such as landing and braking, muscles are stretched […]

Meeting Abstract 45-7  Tuesday, Jan. 5 09:30  Muscle Dynamics During Level and Incline Hopping MCGOWAN, C.P.; University of Idaho cpmcgowan@uidaho.edu http://www.webpages.uidaho.edu/McGowanLab/ Bouncing gaits such as running, trotting and hopping are believed to be efficient because they enable animals to utilize elastic energy storage and recovery, much like a bouncing ball. However not all bipedal hoppers have compliant […]

Meeting Abstract 45-6  Tuesday, Jan. 5 09:15  Effects of aging and exercise on musculoskeletal performance in two genetic strains of the house mouse, Mus musculus domesticus BEECHKO, A/N*; GHOSSEIN, N; HORNER, A; GARLAND, T; AZIZI, M; California State University, San Bernardino; California State University, San Bernardino; California State University, San Bernardino; University of California, Riverside; University of […]

Meeting Abstract 45-5  Tuesday, Jan. 5 09:00  Does aponeurosis influence the relationship between muscle gearing and force? ENG, CM*; ROBERTS, TJ; Brown University; Brown University carolyn_eng@brown.edu Muscle shape changes in pennate muscles affect the force and speed of contraction because they influence the gear ratio through which muscle fibers transmit force and speed to the whole muscle. […]

Meeting Abstract 44-1  Tuesday, Jan. 5 08:00  Xenacoelomorpha is the sister group to Nephrozoa CANNON, J.T.; VELLUTINI, B.C.; SMITH III, J.; RONQUIST, F.; JONDELIUS, U.; HEJNOL, A.*; Naturhistoriska Riksmuseet, Stockholm; Sars International Centre for Marine Molecular Biology, Bergen; Winthrop University, South Carolina; Naturhistoriska Riksmuseet, Stockholm; Naturhistoriska Riksmuseet, Stockholm; Sars International Centre for Marine Molecular Biology, Bergen andreas.hejnol@uib.no […]

Meeting Abstract 44-2  Tuesday, Jan. 5 08:15  Tracing the origin of nephridia by characterizing excretion related gene complement in Xenacoelomorpha. ANDRIKOU, C.*; RUIZ-SANTIESTEBAN, A.J.; HEJNOL, A.; Sars International Centre for Marine Molecular Biology, Bergen; Sars International Centre for Marine Molecular Biology, Bergen; Sars International Centre for Marine Molecular Biology, Bergen carmen.andrikou@uib.no Excretion is the process of eliminating […]