Eman Azizi

Title(s)Associate Professor, Ecology & Evolutionary Biology
SchoolSchool of Biological Sciences
Address5236 McGaugh Hall
Zot 2525
Irvine CA 92697
Phone(949) 824-7414
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    1. Linking in vivo muscle dynamics to in situ force-length and force-velocity reveals that guinea fowl lateral gastrocnemius operates at shorter than optimal lengths. J Exp Biol. 2024 Jun 14. Schwaner MJ, Mayfield DL, Azizi E, Daley MA. PMID: 38873800.
      View in: PubMed   Mentions:    Fields:    
    2. The interaction of in vivo muscle operating lengths and passive stiffness in rat hindlimbs. J Exp Biol. 2024 Mar 01; 227(5). Horner AM, Azizi E, Roberts TJ. PMID: 38353270; PMCID: PMC10984277.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    3. Viscoelastic materials are most energy efficient when loaded and unloaded at equal rates. J R Soc Interface. 2024 01; 21(210):20230527. Tsai L, Navarro P, Wu S, Levinson T, Mendoza E, Janneke Schwaner M, Daley MA, Azizi E, Ilton M. PMID: 38290561; PMCID: PMC10827427.
      View in: PubMed   Mentions:    Fields:    
    4. Architectural gear ratio depends on actuator spacing in a physical model of pennate muscle. Bioinspir Biomim. 2024 Jan 24; 19(2). Sleboda DA, Roberts TJ, Azizi E. PMID: 38176106; PMCID: PMC10876153.
      View in: PubMed   Mentions:    Fields:    Translation:Cells
    5. Modulation of limb mechanics in alligators moving across varying grades. J Exp Biol. 2023 11 15; 226(22). Arias AA, Azizi E. PMID: 37930362.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    6. Linking in vivo muscle dynamics to in situ force-length and force-velocity reveals that guinea fowl lateral gastrocnemius operates at shorter than optimal lengths. bioRxiv. 2023 Oct 16. Schwaner MJ, Mayfield DL, Azizi E, Daley MA. PMID: 37905058; PMCID: PMC10614737.
      View in: PubMed   Mentions:
    7. The effects of temperature on elastic energy storage and release in a system with a dynamic mechanical advantage latch. J Exp Biol. 2023 10 01; 226(19). Mendoza E, Martinez M, Olberding JP, Azizi E. PMID: 37727106; PMCID: PMC10617612.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    8. Adapting small jumping robots to compliant environments. J R Soc Interface. 2023 03; 20(200):20220778. Divi S, Reynaga C, Azizi E, Bergbreiter S. PMID: 36854379; PMCID: PMC9974292.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    9. Hindlimb muscle spindles inform preparatory forelimb coordination prior to landing in toads. J Exp Biol. 2023 01 15; 226(2). Duman A, Azizi E. PMID: 36576050; PMCID: PMC10086541.
      View in: PubMed   Mentions: 1     Fields:    Translation:AnimalsCells
    10. Spring and latch dynamics can act as control pathways in ultrafast systems. Bioinspir Biomim. 2023 01 11; 18(2). Hyun NP, Olberding JP, De A, Divi S, Liang X, Thomas E, St Pierre R, Steinhardt E, Jorge J, Longo SJ, Cox S, Mendoza E, Sutton GP, Azizi E, Crosby AJ, Bergbreiter S, Wood RJ, Patek SN. PMID: 36595244.
      View in: PubMed   Mentions: 1     Fields:    
    11. Tuned muscle and spring properties increase elastic energy storage. J Exp Biol. 2021 12 15; 224(24). Mendoza E, Azizi E. PMID: 34821932; PMCID: PMC10658917.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    12. Corrigendum to: Why do Large Animals Never Actuate Their Jumps with Latch Mediated Springs? Because They can Jump Higher Without Them. Integr Comp Biol. 2020 12 16; 60(6):1567. Sutton GP, Mendoza E, Azizi E, Longo SJ, Olberding JP, Ilton M, Patek SN. PMID: 31665305; PMCID: PMC7742958.
      View in: PubMed   Mentions:    Fields:    
    13. Fatigue resistant jaw muscles facilitate long-lasting courtship behaviour in the southern alligator lizard (Elgaria multicarinata). Proc Biol Sci. 2020 09 30; 287(1935):20201578. Nguyen A, Balaban JP, Azizi E, Talmadge RJ, Lappin AK. PMID: 32962547; PMCID: PMC7542809.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    14. Modeling the Determinants of Mechanical Advantage During Jumping: Consequences for Spring- and Muscle-Driven Movement. Integr Comp Biol. 2019 12 01; 59(6):1515-1524. Olberding JP, Deban SM, Rosario MV, Azizi E. PMID: 31397849.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    15. Why do Large Animals Never Actuate Their Jumps with Latch-Mediated Springs? Because They can Jump Higher Without Them. Integr Comp Biol. 2019 12 01; 59(6):1609-1618. Sutton GP, Mendoza E, Azizi E, Longo SJ, Olberding JP, Ilton M, Patek SN. PMID: 31399734; PMCID: PMC6907395.
      View in: PubMed   Mentions: 20     Fields:    Translation:Animals
    16. Compliant Substrates Disrupt Elastic Energy Storage in Jumping Tree Frogs. Integr Comp Biol. 2019 12 01; 59(6):1535-1545. Reynaga CM, Eaton CE, Strong GA, Azizi E. PMID: 31141102.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    17. The Multi-Scale, Three-Dimensional Nature of Skeletal Muscle Contraction. Physiology (Bethesda). 2019 11 01; 34(6):402-408. Roberts TJ, Eng CM, Sleboda DA, Holt NC, Brainerd EL, Stover KK, Marsh RL, Azizi E. PMID: 31577172; PMCID: PMC7002870.
      View in: PubMed   Mentions: 18     Fields:    Translation:HumansAnimals
    18. The high speed radular prey strike of a fish-hunting cone snail. Curr Biol. 2019 08 19; 29(16):R788-R789. Schulz JR, Jan I, Sangha G, Azizi E. PMID: 31430472.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    19. Beyond power amplification: latch-mediated spring actuation is an emerging framework for the study of diverse elastic systems. J Exp Biol. 2019 08 09; 222(Pt 15). Longo SJ, Cox SM, Azizi E, Ilton M, Olberding JP, St Pierre R, Patek SN. PMID: 31399509.
      View in: PubMed   Mentions: 41     Fields:    Translation:Animals
    20. Structural Determinants of Muscle Gearing During Dynamic Contractions. Integr Comp Biol. 2018 08 01; 58(2):207-218. Eng CM, Azizi E, Roberts TJ. PMID: 29889236; PMCID: PMC6104701.
      View in: PubMed   Mentions: 28     Fields:    Translation:HumansAnimals
    21. Morphological and kinematic specializations of walking frogs. J Exp Zool A Ecol Integr Physiol. 2018 02; 329(2):87-98. Reynaga CM, Astley HC, Azizi E. PMID: 29851278.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    22. The principles of cascading power limits in small, fast biological and engineered systems. Science. 2018 04 27; 360(6387). Ilton M, Bhamla MS, Ma X, Cox SM, Fitchett LL, Kim Y, Koh JS, Krishnamurthy D, Kuo CY, Temel FZ, Crosby AJ, Prakash M, Sutton GP, Wood RJ, Azizi E, Bergbreiter S, Patek SN. PMID: 29700237.
      View in: PubMed   Mentions: 54     Fields:    
    23. Lowering metabolic rate mitigates muscle atrophy in western fence lizards. J Exp Biol. 2017 08 01; 220(Pt 15):2748-2756. Balaban J, Azizi E. PMID: 28507191.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    24. Resistance to radial expansion limits muscle strain and work. Biomech Model Mechanobiol. 2017 Oct; 16(5):1633-1643. Azizi E, Deslauriers AR, Holt NC, Eaton CE. PMID: 28432448; PMCID: PMC5889119.
      View in: PubMed   Mentions: 35     Fields:    Translation:Animals
    25. Modeling age-related changes in muscle-tendon dynamics during cyclical contractions in the rat gastrocnemius. J Appl Physiol (1985). 2016 10 01; 121(4):1004-1012. Danos N, Holt NC, Sawicki GS, Azizi E. PMID: 27493196; PMCID: PMC5142310.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    26. Determinants of aponeurosis shape change during muscle contraction. J Biomech. 2016 06 14; 49(9):1812-1817. Arellano CJ, Gidmark NJ, Konow N, Azizi E, Roberts TJ. PMID: 27155748; PMCID: PMC4885790.
      View in: PubMed   Mentions: 14     Fields:    Translation:Animals
    27. Stuck in gear: age-related loss of variable gearing in skeletal muscle. J Exp Biol. 2016 Apr; 219(Pt 7):998-1003. Holt NC, Danos N, Roberts TJ, Azizi E. PMID: 27030778; PMCID: PMC4852693.
      View in: PubMed   Mentions: 33     Fields:    Translation:AnimalsCells
    28. The effect of activation level on muscle function during locomotion: are optimal lengths and velocities always used? Proc Biol Sci. 2016 Jan 27; 283(1823). Holt NC, Azizi E. PMID: 26817770; PMCID: PMC4795037.
      View in: PubMed   Mentions: 12     Fields:    Translation:Animals
    29. Timing matters: tuning the mechanics of a muscle-tendon unit by adjusting stimulation phase during cyclic contractions. J Exp Biol. 2015 Oct; 218(Pt 19):3150-9. Sawicki GS, Robertson BD, Azizi E, Roberts TJ. PMID: 26232413; PMCID: PMC4631775.
      View in: PubMed   Mentions: 24     Fields:    Translation:Animals
    30. Passive stiffness of hindlimb muscles in anurans with distinct locomotor specializations. Zoology (Jena). 2015 Aug; 118(4):239-47. Danos N, Azizi E. PMID: 26006308.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    31. Reduce torques and stick the landing: limb posture during landing in toads. J Exp Biol. 2014 Oct 15; 217(Pt 20):3742-7. Azizi E, Larson NP, Abbott EM, Danos N. PMID: 25320271.
      View in: PubMed   Mentions: 5     Fields:    Translation:Animals
    32. What drives activation-dependent shifts in the force-length curve? Biol Lett. 2014 Sep; 10(9). Holt NC, Azizi E. PMID: 25252838; PMCID: PMC4190969.
      View in: PubMed   Mentions: 18     Fields:    Translation:Animals
    33. Regional heterogeneity in muscle fiber strain: the role of fiber architecture. Front Physiol. 2014; 5:303. Azizi E, Deslauriers AR. PMID: 25161626; PMCID: PMC4129366.
      View in: PubMed   Mentions: 20  
    34. Biomechanics and control of landing in toads. Integr Comp Biol. 2014 Dec; 54(6):1136-47. Gillis G, Ekstrom L, Azizi E. PMID: 24876195.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    35. Locomotor function shapes the passive mechanical properties and operating lengths of muscle. Proc Biol Sci. 2014 May 22; 281(1783):20132914. Azizi E. PMID: 24718759; PMCID: PMC3996596.
      View in: PubMed   Mentions: 20     Fields:    Translation:Animals
    36. Geared up to stretch: pennate muscle behavior during active lengthening. J Exp Biol. 2014 Feb 01; 217(Pt 3):376-81. Azizi E, Roberts TJ. PMID: 24477610; PMCID: PMC4008126.
      View in: PubMed   Mentions: 31     Fields:    Translation:Animals
    37. Chasing maximal performance: a cautionary tale from the celebrated jumping frogs of Calaveras County. J Exp Biol. 2013 Nov 01; 216(Pt 21):3947-53. Astley HC, Abbott EM, Azizi E, Marsh RL, Roberts TJ. PMID: 24133149.
      View in: PubMed   Mentions: 16     Fields:    Translation:Animals
    38. Variable gearing in a biologically inspired pneumatic actuator array. Bioinspir Biomim. 2013 Jun; 8(2):026002. Azizi E, Roberts TJ. PMID: 23462288; PMCID: PMC3983985.
      View in: PubMed   Mentions: 5     Fields:    Translation:HumansAnimalsCells
    39. Anticipatory motor patterns limit muscle stretch during landing in toads. Biol Lett. 2013 Feb 23; 9(1):20121045. Azizi E, Abbott EM. PMID: 23256184; PMCID: PMC3565527.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
    40. Muscle power attenuation by tendon during energy dissipation. Proc Biol Sci. 2012 Mar 22; 279(1731):1108-13. Konow N, Azizi E, Roberts TJ. PMID: 21957134; PMCID: PMC3267137.
      View in: PubMed   Mentions: 48     Fields:    Translation:Animals
    41. The weak link: do muscle properties determine locomotor performance in frogs? Philos Trans R Soc Lond B Biol Sci. 2011 May 27; 366(1570):1488-95. Roberts TJ, Abbott EM, Azizi E. PMID: 21502120; PMCID: PMC3130445.
      View in: PubMed   Mentions: 18     Fields:    Translation:Animals
    42. Flexible mechanisms: the diverse roles of biological springs in vertebrate movement. J Exp Biol. 2011 Feb 01; 214(Pt 3):353-61. Roberts TJ, Azizi E. PMID: 21228194; PMCID: PMC3020146.
      View in: PubMed   Mentions: 103     Fields:    Translation:HumansAnimalsCells
    43. The series-elastic shock absorber: tendons attenuate muscle power during eccentric actions. J Appl Physiol (1985). 2010 Aug; 109(2):396-404. Roberts TJ, Azizi E. PMID: 20507964; PMCID: PMC2928602.
      View in: PubMed   Mentions: 41     Fields:    Translation:Animals
    44. Muscle performance during frog jumping: influence of elasticity on muscle operating lengths. Proc Biol Sci. 2010 May 22; 277(1687):1523-30. Azizi E, Roberts TJ. PMID: 20106852; PMCID: PMC2871832.
      View in: PubMed   Mentions: 50     Fields:    Translation:Animals
    45. Biaxial strain and variable stiffness in aponeuroses. J Physiol. 2009 Sep 01; 587(Pt 17):4309-18. Azizi E, Roberts TJ. PMID: 19596897; PMCID: PMC2754367.
      View in: PubMed   Mentions: 51     Fields:    Translation:Animals
    46. Mechanical properties of the gastrocnemius aponeurosis in wild turkeys. Integr Comp Biol. 2009 Jul; 49(1):51-8. Azizi E, Halenda GM, Roberts TJ. PMID: 21120110; PMCID: PMC2994030.
      View in: PubMed   Mentions: 21     Fields:    
    47. Variable gearing in pennate muscles. Proc Natl Acad Sci U S A. 2008 Feb 05; 105(5):1745-50. Azizi E, Brainerd EL, Roberts TJ. PMID: 18230734; PMCID: PMC2234215.
      View in: PubMed   Mentions: 139     Fields:    Translation:AnimalsCells
    48. Uniform strain in broad muscles: active and passive effects of the twisted tendon of the spotted ratfish Hydrolagus colliei. J Exp Biol. 2007 Oct; 210(Pt 19):3395-406. Dean MN, Azizi E, Summers AP. PMID: 17872993.
      View in: PubMed   Mentions: 7     Fields:    Translation:Animals
    49. Vertebral function during tadpole locomotion. Zoology (Jena). 2007; 110(4):290-7. Azizi E, Landberg T, Wassersug RJ. PMID: 17611090.
      View in: PubMed   Mentions: 4     Fields:    Translation:Animals
    50. Architectural gear ratio and muscle fiber strain homogeneity in segmented musculature. J Exp Zool A Ecol Genet Physiol. 2007 Mar 01; 307(3):145-55. Azizi E, Brainerd EL. PMID: 17397068.
      View in: PubMed   Mentions: 13     Fields:    Translation:AnimalsCells
    51. Muscle fiber angle, segment bulging and architectural gear ratio in segmented musculature. J Exp Biol. 2005 Sep; 208(Pt 17):3249-61. Brainerd EL, Azizi E. PMID: 16109887.
      View in: PubMed   Mentions: 53     Fields:    Translation:AnimalsCells
    52. Patterns of axial and appendicular movements during aquatic walking in the salamander Siren lacertina. Zoology (Jena). 2004; 107(2):111-20. Azizi E, Horton JM. PMID: 16351932.
      View in: PubMed   Mentions: 6     Fields:    
    53. Convergent evolution of the head retraction escape response in elongate fishes and amphibians. Zoology (Jena). 2004; 107(3):205-17. Ward AB, Azizi E. PMID: 16351939.
      View in: PubMed   Mentions: 7     Fields:    
    54. The hydrodynamics of locomotion at intermediate Reynolds numbers: undulatory swimming in ascidian larvae (Botrylloides sp.). J Exp Biol. 2003 Jan; 206(Pt 2):327-43. McHenry MJ, Azizi E, Strother JA. PMID: 12477902.
      View in: PubMed   Mentions: 6     Fields:    Translation:Animals
    55. Morphology and mechanics of myosepta in a swimming salamander (Siren lacertina). Comp Biochem Physiol A Mol Integr Physiol. 2002 Dec; 133(4):967-78. Azizi E, Gillis GB, Brainerd EL. PMID: 12485686.
      View in: PubMed   Mentions: 10     Fields:    Translation:AnimalsCells
    56. Effects of metamorphosis on the aquatic escape response of the two-lined salamander (Eurycea bislineata). J Exp Biol. 2002 Mar; 205(Pt 6):841-9. Azizi E, Landberg T. PMID: 11914392.
      View in: PubMed   Mentions: 9     Fields:    Translation:Animals
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