John EA Bertram, Ph.D. - Publications

Cell Biology and Anatomy University of Calgary, Calgary, Alberta, Canada 
Comparative Biomechanics

88 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2021 Schroeder RT, Croft JL, Bertram JEA. Evaluating the energetics of entrainment in a human-machine coupled oscillator system. Scientific Reports. 11: 15804. PMID 34349146 DOI: 10.1038/s41598-021-95047-x  1
2019 Schroeder RT, Bertram JEA, Son Nguyen V, Vinh Hac V, Croft JL. Load carrying with flexible bamboo poles: optimization of a coupled oscillator system. The Journal of Experimental Biology. 222. PMID 31801848 DOI: 10.1242/jeb.203760  1
2019 Polet DT, Bertram JEA. An inelastic quadrupedal model discovers four-beat walking, two-beat running, and pseudo-elastic actuation as energetically optimal. Plos Computational Biology. 15: e1007444. PMID 31751339 DOI: 10.1371/journal.pcbi.1007444  1
2019 Croft JL, Bertram JEA. 'Mini-interval gait' switching: understanding the positive implications of a novel training regime. Journal of Exercise Rehabilitation. 15: 351-357. PMID 31316926 DOI: 10.12965/jer.1938186.093  1
2019 Croft JL, Schroeder RT, Bertram JEA. The Landscape of Movement Control in Locomotion: Cost, Strategy, and Solution. Frontiers in Psychology. 10: 716. PMID 31024381 DOI: 10.3389/fpsyg.2019.00716  1
2018 Croft JL, Schroeder RT, Bertram JEA. Determinants of optimal leg use strategy: horizontal to vertical transition in the parkour wall climb. The Journal of Experimental Biology. PMID 30446542 DOI: 10.1242/jeb.190983  1
2018 Polet DT, Schroeder RT, Bertram JEA. Correction: Reducing gravity takes the bounce out of running (doi:10.1242/jeb.162024). The Journal of Experimental Biology. 221. PMID 30201657 DOI: 10.1242/jeb.191445  1
2018 Kim J, Bertram JEA. Compliant walking appears metabolically advantageous at extreme step lengths. Gait & Posture. 64: 84-89. PMID 29883939 DOI: 10.1016/j.gaitpost.2018.05.020  0.76
2018 Schroeder RT, Croft JL, Ngo GD, Bertram JEA. Properties of traditional bamboo carrying poles have implications for user interactions. Plos One. 13: e0196208. PMID 29746480 DOI: 10.1371/journal.pone.0196208  1
2017 Polet DT, Schroeder RT, Bertram JEA. Reducing gravity takes the bounce out of running. The Journal of Experimental Biology. PMID 29217625 DOI: 10.1242/jeb.162024  1
2017 Croft JL, Bertram JEA. Affordance Boundaries Are Defined by Dynamic Capabilities of Parkour Athletes in Dropping from Various Heights. Frontiers in Psychology. 8: 1571. PMID 28979219 DOI: 10.3389/fpsyg.2017.01571  1
2017 Gutmann AK, Bertram JEA. Metabolic cost of human hopping. The Journal of Experimental Biology. 220: 1654-1662. PMID 28468814 DOI: 10.1242/jeb.150284  1
2017 Croft JL, Schroeder RT, Bertram JE. The goal of locomotion: Separating the fundamental task from the mechanisms that accomplish it. Psychonomic Bulletin & Review. PMID 28092079 DOI: 10.3758/s13423-016-1222-3  1
2016 Gutmann AK, Bertram JE. The apparently contradictory energetics of hopping and running: the counter-intuitive effect of constraints resolves the paradox. The Journal of Experimental Biology. PMID 27875261 DOI: 10.1242/jeb.144832  1
2016 Hobbs SJ, Bertram JE, Clayton HM. An exploration of the influence of diagonal dissociation and moderate changes in speed on locomotor parameters in trotting horses. Peerj. 4: e2190. PMID 27413640 DOI: 10.7717/peerj.2190  0.01
2015 Bertram JE. Locomotion: Why We Walk the Way We Walk. Current Biology : Cb. 25: R795-7. PMID 26394100 DOI: 10.1016/j.cub.2015.08.035  0.01
2014 Butcher MT, Bertram JE, Syme DA, Hermanson JW, Chase PB. Frequency dependence of power and its implications for contractile function of muscle fibers from the digital flexors of horses. Physiological Reports. 2. PMID 25293602 DOI: 10.14814/Phy2.12174  1
2014 Bertram JE, Gutmann A, Randev J, Hulliger M. Domestic cat walking parallels human constrained optimization: optimization strategies and the comparison of normal and sensory deficient individuals. Human Movement Science. 36: 154-66. PMID 24974156 DOI: 10.1016/J.Humov.2014.05.008  1
2014 Freed PE, Bertram JE, McLaughlin DE. Using lecture capture: a qualitative study of nursing faculty's experience. Nurse Education Today. 34: 598-602. PMID 23856239 DOI: 10.1016/j.nedt.2013.06.021  1
2013 Bertram JE, Narendorf SC, McMillen JC. Pioneering the psychiatric nurse role in foster care. Archives of Psychiatric Nursing. 27: 285-92. PMID 24238008 DOI: 10.1016/J.Apnu.2013.09.003  1
2013 Bertram JE. Gait as solution, but what is the problem? Exploring cost, economy and compromise in locomotion. Veterinary Journal (London, England : 1997). 198: e3-8. PMID 24149060 DOI: 10.1016/j.tvjl.2013.09.025  0.01
2013 Lee DV, Comanescu TN, Butcher MT, Bertram JE. A comparative collision-based analysis of human gait. Proceedings. Biological Sciences / the Royal Society. 280: 20131779. PMID 24089334 DOI: 10.1098/Rspb.2013.1779  1
2013 Matyas JR, Gutmann A, Randev J, Hurtig M, Bertram JE. Intra-articular anaesthesia mitigates established pain in experimental osteoarthritis: a preliminary study of gait impulse redistribution as a biomarker of analgesia pharmacodynamics. Osteoarthritis and Cartilage / Oars, Osteoarthritis Research Society. 21: 1365-73. PMID 23973151 DOI: 10.1016/J.Joca.2013.06.017  1
2013 Bertram JE, Prebeau-Menezes L, Szarko MJ. Gait characteristics over the course of a race in recreational marathon competitors. Research Quarterly For Exercise and Sport. 84: 6-15. PMID 23611003 DOI: 10.1080/02701367.2013.762259  0.01
2013 Gutmann AK, Bertram JE. Constrained optimization of metabolic cost in human hopping. Experimental Physiology. 98: 1178-89. PMID 23538463 DOI: 10.1113/expphysiol.2012.069880  1
2013 Bertram JE, Hasaneini SJ. Neglected losses and key costs: tracking the energetics of walking and running. The Journal of Experimental Biology. 216: 933-8. PMID 23447662 DOI: 10.1242/jeb.078543  0.01
2012 Bertram JE, Orwin KH, Clough TJ, Condron LM, Sherlock RR, O'Callaghan M. Effect of soil moisture and bovine urine on microbial stress Pedobiologia. 55: 211-218. DOI: 10.1016/j.pedobi.2012.03.004  1
2011 Lee DV, Bertram JE, Anttonen JT, Ros IG, Harris SL, Biewener AA. A collisional perspective on quadrupedal gait dynamics. Journal of the Royal Society, Interface / the Royal Society. 8: 1480-6. PMID 21471189 DOI: 10.1098/Rsif.2011.0019  1
2010 Szarko M, Muldrew K, Bertram JE. Freeze-thaw treatment effects on the dynamic mechanical properties of articular cartilage. Bmc Musculoskeletal Disorders. 11: 231. PMID 20932309 DOI: 10.1186/1471-2474-11-231  1
2010 Butcher MT, Chase PB, Hermanson JW, Clark AN, Brunet NM, Bertram JE. Contractile properties of muscle fibers from the deep and superficial digital flexors of horses. American Journal of Physiology. Regulatory, Integrative and Comparative Physiology. 299: R996-R1005. PMID 20702801 DOI: 10.1152/Ajpregu.00510.2009  1
2010 Ciough TJ, Bertram JE, Ray JL, Condron LM, O'Callaghan M, Sherlock RR, Wells NS. Unweathered wood biochar impact on nitrous oxide emissions from a bovine-urine-amended pasture soil Soil Science Society of America Journal. 74: 852-860. DOI: 10.2136/sssaj2009.0185  1
2010 Orwin KH, Bertram JE, Clough TJ, Condron LM, Sherlock RR, O'Callaghan M, Ray J, Baird DB. Impact of bovine urine deposition on soil microbial activity, biomass, and community structure Applied Soil Ecology. 44: 89-100. DOI: 10.1016/j.apsoil.2009.10.004  1
2009 Bertram JE, Gutmann A. Motions of the running horse and cheetah revisited: fundamental mechanics of the transverse and rotary gallop. Journal of the Royal Society, Interface / the Royal Society. 6: 549-59. PMID 18854295 DOI: 10.1098/Rsif.2008.0328  1
2009 Butcher MT, Hermanson JW, Ducharme NG, Mitchell LM, Soderholm LV, Bertram JE. Contractile behavior of the forelimb digital flexors during steady-state locomotion in horses (Equus caballus): an initial test of muscle architectural hypotheses about in vivo function. Comparative Biochemistry and Physiology. Part a, Molecular & Integrative Physiology. 152: 100-14. PMID 18835360 DOI: 10.1016/J.Cbpa.2008.09.007  1
2009 Bertram JE, Clough TJ, Sherlock RR, Condron LM, O'Callaghan M, Wells NS, Ray JL. Hippuric acid and benzoic acid inhibition of urine derived N2 O emissions from soil Global Change Biology. 15: 2067-2077. DOI: 10.1111/j.1365-2486.2008.01779.x  1
2009 Orwin KH, Bertram JE, Clough TJ, Condron LM, Sherlock RR, O'Callaghan M. Short-term consequences of spatial heterogeneity in soil nitrogen concentrations caused by urine patches of different sizes Applied Soil Ecology. 42: 271-278. DOI: 10.1016/j.apsoil.2009.05.002  1
2008 Cooper RC, Prebeau-Menezes LM, Butcher MT, Bertram JE. Step length and required friction in walking. Gait & Posture. 27: 547-51. PMID 17703942 DOI: 10.1016/j.gaitpost.2007.07.004  1
2007 Butcher MT, Hermanson JW, Ducharme NG, Mitchell LM, Soderholm LV, Bertram JE. Superficial digital flexor tendon lesions in racehorses as a sequela to muscle fatigue: a preliminary study. Equine Veterinary Journal. 39: 540-5. PMID 18065313 DOI: 10.2746/042516407X212475  1
2007 Bertram JE. How animals move: studies in the mechanics of the tetrapod skeleton. The Journal of Experimental Biology. 210: 2401-2. PMID 17601942 DOI: 10.1242/jeb.000687  0.01
2007 Heravi M, Bertram JE. A novel resource model for underprivileged health support: Community Medical Outreach. Rural and Remote Health. 7: 668. PMID 17313302  1
2006 Butcher MT, Bertram JE, Benzuidenhout AJ. Collateral ligaments of the distal sesamoid bone in the digit of Equus: re-evaluating midstance function. Journal of Morphology. 267: 1177-85. PMID 16830334 DOI: 10.1002/jmor.10464  1
2006 Gutmann AK, Jacobi B, Butcher MT, Bertram JE. Constrained optimization in human running. The Journal of Experimental Biology. 209: 622-32. PMID 16449557 DOI: 10.1242/Jeb.02010  1
2006 Clough TJ, Bertram JE, Sherlock RR, Leonard RL, Nowicki BL. Comparison of measured and EF5-r-derived N2O fluxes from a spring-fed river Global Change Biology. 12: 477-488. DOI: 10.1111/j.1365-2486.2005.01092.x  1
2005 Ruina A, Bertram JE, Srinivasan M. A collisional model of the energetic cost of support work qualitatively explains leg sequencing in walking and galloping, pseudo-elastic leg behavior in running and the walk-to-run transition. Journal of Theoretical Biology. 237: 170-92. PMID 15961114 DOI: 10.1016/J.Jtbi.2005.04.004  1
2005 Riskin DK, Bertram JE, Hermanson JW. Testing the hindlimb-strength hypothesis: non-aerial locomotion by Chiroptera is not constrained by the dimensions of the femur or tibia. The Journal of Experimental Biology. 208: 1309-19. PMID 15781891 DOI: 10.1242/Jeb.01522  1
2005 Bertram JE. Constrained optimization in human walking: cost minimization and gait plasticity. The Journal of Experimental Biology. 208: 979-91. PMID 15767300 DOI: 10.1242/jeb.01498  0.01
2004 Bertram JE. New perspectives on brachiation mechanics. American Journal of Physical Anthropology. 100-17. PMID 15605388 DOI: 10.1002/ajpa.20156  1
2003 Usherwood JR, Bertram JE. Gait transition cost in humans. European Journal of Applied Physiology. 90: 647-50. PMID 14564525 DOI: 10.1007/s00421-003-0980-6  1
2003 Todhunter RJ, Bertram JE, Smith S, Farese JP, Williams AJ, Manocchia A, Erb HN, Dykes NL, Burton-Wurster NI, Lust G. Effect of dorsal hip loading, sedation, and general anesthesia on the dorsolateral subluxation score in dogs. Veterinary Surgery : Vs. 32: 196-205. PMID 12784195 DOI: 10.1053/Jvet.2003.50035  1
2003 Usherwood JR, Bertram JE. Understanding brachiation: insight from a collisional perspective. The Journal of Experimental Biology. 206: 1631-42. PMID 12682095  1
2003 Usherwood JR, Larson SG, Bertram JE. Mechanisms of force and power production in unsteady ricochetal brachiation. American Journal of Physical Anthropology. 120: 364-72. PMID 12627531 DOI: 10.1002/ajpa.10133  1
2002 Bertram JE, D'Antonio P, Pardo J, Lee DV. Pace length effects in human walking: "groucho" gaits revisited. Journal of Motor Behavior. 34: 309-18. PMID 19260181 DOI: 10.1080/00222890209601949  1
2002 Dahlgren LA, van der Meulen MC, Bertram JE, Starrak GS, Nixon AJ. Insulin-like growth factor-I improves cellular and molecular aspects of healing in a collagenase-induced model of flexor tendinitis. Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society. 20: 910-9. PMID 12382953 DOI: 10.1016/S0736-0266(02)00009-8  1
2002 Bertram JE. Hypothesis testing as a laboratory exercise: a simple analysis of human walking, with a physiological surprise. Advances in Physiology Education. 26: 110-9. PMID 12031943  0.01
2002 Gellman KS, Bertram JE, Hermanson JW. Morphology, histochemistry, and function of epaxial cervical musculature in the horse (Equus caballus). Journal of Morphology. 251: 182-94. PMID 11748702 DOI: 10.1002/Jmor.1082  1
2001 Haussler KK, Bertram JE, Gellman K, Hermanson JW. Segmental in vivo vertebral kinematics at the walk, trot and canter: a preliminary study. Equine Veterinary Journal. Supplement. 160-4. PMID 11721560 DOI: 10.1111/J.2042-3306.2001.Tb05381.X  1
2001 Bertram JE, Chang YH. Mechanical energy oscillations of two brachiation gaits: measurement and simulation. American Journal of Physical Anthropology. 115: 319-26. PMID 11471130 DOI: 10.1002/Ajpa.1088  1
2001 Bertram JE, Ruina A. Multiple walking speed-frequency relations are predicted by constrained optimization. Journal of Theoretical Biology. 209: 445-53. PMID 11319893 DOI: 10.1006/Jtbi.2001.2279  1
2000 Cullinane DM, Bertram JE. The mechanical behaviour of a novel mammalian intervertebral joint. Journal of Anatomy. 197: 627-34. PMID 11197536  1
2000 Erickson JD, Lee DV, Bertram JE. Fourier analysis of acetabular shape in native American Arikara populations before and after acquisition of horses. American Journal of Physical Anthropology. 113: 473-80. PMID 11102882 DOI: 10.1002/1096-8644(200012)113:4<473::Aid-Ajpa3>3.0.Co;2-5  1
2000 Chang YH, Bertram JE, Lee DV. External forces and torques generated by the brachiating white-handed gibbon (Hylobates lar). American Journal of Physical Anthropology. 113: 201-16. PMID 11002205 DOI: 10.1002/1096-8644(200010)113:2<201::Aid-Ajpa5>3.0.Co;2-S  1
2000 Bertram JE, Lee DV, Case HN, Todhunter RJ. Comparison of the trotting gaits of Labrador Retrievers and Greyhounds. American Journal of Veterinary Research. 61: 832-8. PMID 10895909 DOI: 10.2460/Ajvr.2000.61.832  1
1999 Zippel KC, Glor RE, Bertram JEA. On caudal prehensility and phylogenetic constraint in lizards: The influence of ancestral anatomy on function in Corucia and Furcifer. Journal of Morphology. 239: 143-155. PMID 29847883 DOI: 10.1002/(Sici)1097-4687(199902)239:2<143::Aid-Jmor3>3.0.Co;2-O  0.2
1999 Jiang C, Pitt RE, Bertram JE, Aneshansley DJ. Fractal-based image texture analysis of trabecular bone architecture. Medical & Biological Engineering & Computing. 37: 413-8. PMID 10696694  0.01
1999 Lee DV, Bertram JE, Todhunter RJ. Acceleration and balance in trotting dogs. The Journal of Experimental Biology. 202: 3565-73. PMID 10574733  1
1999 Bertram JE, Ruina A, Cannon CE, Chang YH, Coleman MJ. A point-mass model of gibbon locomotion. The Journal of Experimental Biology. 202: 2609-17. PMID 10482720  1
1999 Hardie RJ, Bertram JE, Todhunter RJ, Trotter EJ. Biomechanical comparison of two plating techniques for fixation of acetabular osteotomies in dogs. Veterinary Surgery : Vs. 28: 148-53. PMID 10338159  1
1998 Bertram JE, Polevoy Y, Cullinane DM. Mechanics of avian fibrous periosteum: tensile and adhesion properties during growth. Bone. 22: 669-75. PMID 9626407  1
1997 Chang YH, Bertram JE, Ruina A. A dynamic force and moment analysis system for brachiation. The Journal of Experimental Biology. 200: 3013-20. PMID 9359890  1
1997 Schutt WA, Altenbach JS, Chang YH, Cullinane DM, Hermanson JW, Muradali F, Bertram JE. The dynamics of flight-initiating jumps in the common vampire bat Desmodus rotundus. The Journal of Experimental Biology. 200: 3003-12. PMID 9359889  1
1997 Bertram JE, Greenberg LS, Miyake T, Hall BK. Paralysis and long bone growth in the chick: growth shape trajectories of the pelvic limb. Growth, Development, and Aging : Gda. 61: 51-60. PMID 9348471  0.01
1997 Andrews C, Bertram JE. Mechanical work as a determinant of prey-handling behavior in the tokay gecko (Gekko gecko). Physiological Zoology. 70: 193-201. PMID 9231392  0.01
1997 Farquhar T, Bertram J, Todhunter RJ, Burton-Wurster N, Lust G. Variations in composition of cartilage from the shoulder joints of young adult dogs at risk for developing canine hip dysplasia Journal of the American Veterinary Medical Association. 210: 1483-1485. PMID 9154202  1
1996 Farquhar T, Xia Y, Mann K, Bertram J, Burton-Wurster N, Jelinski L, Lust G. Swelling and fibronectin accumulation in articular cartilage explants after cyclical impact Journal of Orthopaedic Research. 14: 417-423. PMID 8676255 DOI: 10.1002/Jor.1100140312  1
1994 Biewener AA, Bertram JE. Structural response of growing bone to exercise and disuse. Journal of Applied Physiology (Bethesda, Md. : 1985). 76: 946-55. PMID 8175610 DOI: 10.1152/Jappl.1994.76.2.946  1
1993 Biewener AA, Bertram JE. Skeletal strain patterns in relation to exercise training during growth. The Journal of Experimental Biology. 185: 51-69. PMID 8294852  1
1991 Bertram JE, Swartz SM. The 'law of bone transformation': a case of crying Wolff? Biological Reviews of the Cambridge Philosophical Society. 66: 245-73. PMID 1932466 DOI: 10.1111/J.1469-185X.1991.Tb01142.X  1
1990 Bertram JE, Biewener AA. Differential scaling of the long bones in the terrestrial carnivora and other mammals. Journal of Morphology. 204: 157-69. PMID 2348461 DOI: 10.1002/Jmor.1052040205  1
1989 Swartz SM, Bertram JE, Biewener AA. Telemetered in vivo strain analysis of locomotor mechanics of brachiating gibbons. Nature. 342: 270-2. PMID 2812025 DOI: 10.1038/342270A0  1
1988 Bertram JE, Biewener AA. Bone curvature: sacrificing strength for load predictability? Journal of Theoretical Biology. 131: 75-92. PMID 3419194 DOI: 10.1016/S0022-5193(88)80122-X  1
1987 Bertram JE, Gosline JM. Functional design of horse hoof keratin: the modulation of mechanical properties through hydration effects. The Journal of Experimental Biology. 130: 121-36. PMID 2442283  1
1986 Biewener AA, Swartz SM, Bertram JE. Bone modeling during growth: dynamic strain equilibrium in the chick tibiotarsus. Calcified Tissue International. 39: 390-5. PMID 3100003 DOI: 10.1007/Bf02555177  1
1986 Bertram JE, Gosline JM. Fracture toughness design in horse hoof keratin. The Journal of Experimental Biology. 125: 29-47. PMID 2428912  1
1959 Bertram JE, Sarachik PE. Stability of circuits with randomly time-varying parameters Ire Transactions On Circuit Theory. 6: 260-270. DOI: 10.1109/TCT.1959.1086610  1
1959 Kalman RE, Bertram JE. General approach to control theory based on the methods of lyapunov Ire Transactions On Automatic Control. 4: 20. DOI: 10.1109/TAC.1959.1104901  1
1959 Kalman RE, Bertram JE. Control system analysis and design via the second method of lyapunov: (I) continuous-time systems (II) discrete time systems Ire Transactions On Automatic Control. 4: 112. DOI: 10.1109/TAC.1959.1104895  1
1959 Bertram JE, Sarachik PE. On optimal computer control Ire Transactions On Automatic Control. 4: 111. DOI: 10.1109/TAC.1959.1104883  1
1959 Kalman RE, Bertram JE. A unified approach to the theory of sampling systems Journal of the Franklin Institute. 267: 405-436.  1
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