Robert J. Gregor, Ph.D. - Publications

Affiliations: 
1976 Biomechanics and Physiology Pennsylvania State University, State College, PA, United States 

76 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
2012 Childers WL, Perell-Gerson KL, Gregor RJ. Measurement of motion between the residual limb and the prosthetic socket during cycling Journal of Prosthetics and Orthotics. 24: 19-24. DOI: 10.1097/Jpo.0B013E31824362E5  0.316
2011 Childers WL, Gregor RJ. Effectiveness of force production in persons with unilateral transtibial amputation during cycling Prosthetics and Orthotics International. 35: 373-378. PMID 21998095 DOI: 10.1177/0309364611423129  0.38
2011 Childers WL, Kistenberg RS, Gregor RJ. Pedaling asymmetries in cyclists with unilateral transtibial amputation: Effect of prosthetic foot stiffness Journal of Applied Biomechanics. 27: 314-321. PMID 21896953 DOI: 10.1123/Jab.27.4.314  0.357
2011 Prilutsky BI, Maas H, Bulgakova M, Hodson-Tole EF, Gregor RJ. Short-term motor compensations to denervation of feline soleus and lateral gastrocnemius result in preservation of ankle mechanical output during locomotion. Cells, Tissues, Organs. 193: 310-24. PMID 21411965 DOI: 10.1159/000323678  0.467
2010 Maas H, Gregor RJ, Hodson-Tole EF, Farrell BJ, English AW, Prilutsky BI. Locomotor changes in length and EMG activity of feline medial gastrocnemius muscle following paralysis of two synergists. Experimental Brain Research. 203: 681-92. PMID 20458472 DOI: 10.1007/s00221-010-2279-2  0.344
2009 Childers WL, Kistenberg RS, Gregor RJ. The biomechanics of cycling with a transtibial amputation: Recommendations for prosthetic design and direction for future research Prosthetics and Orthotics International. 33: 256-271. PMID 19658015 DOI: 10.1080/03093640903067234  0.32
2009 Maas H, Gregor RJ, Hodson-Tole EF, Farrell BJ, Prilutsky BI. Distinct muscle fascicle length changes in feline medial gastrocnemius and soleus muscles during slope walking. Journal of Applied Physiology (Bethesda, Md. : 1985). 106: 1169-80. PMID 19164776 DOI: 10.1152/Japplphysiol.01306.2007  0.423
2009 Childers WL, Hodson-Tole EF, Gregor RJ. Activation Changes In The Gastrocnemius Muscle: Adaptation To A New Functional Role Following Amputation.: 1077 Medicine and Science in Sports and Exercise. 41: 168. DOI: 10.1249/01.Mss.0000354161.24516.91  0.337
2009 Hodson-Tole EF, Gregor RJ, Maas H, Farrell BJ, Prilutsky BI. Patterns of motor unit recruitment in feline ankle extensor muscles during different motor tasks Comparative Biochemistry and Physiology Part a: Molecular & Integrative Physiology. 153: S124. DOI: 10.1016/J.Cbpa.2009.04.205  0.34
2007 Lay AN, Hass CJ, Gregor RJ. The effects of sloped surfaces on locomotion: backward walking as a perturbation. Journal of Biomechanics. 40: 3050-5. PMID 17433332 DOI: 10.1016/J.Jbiomech.2007.02.004  0.443
2007 Maas H, Prilutsky BI, Nichols TR, Gregor RJ. The effects of self-reinnervation of cat medial and lateral gastrocnemius muscles on hindlimb kinematics in slope walking. Experimental Brain Research. 181: 377-93. PMID 17406860 DOI: 10.1007/S00221-007-0938-8  0.302
2007 Lay AN, Hass CJ, Richard Nichols T, Gregor RJ. The effects of sloped surfaces on locomotion: an electromyographic analysis. Journal of Biomechanics. 40: 1276-85. PMID 16872616 DOI: 10.1016/J.Jbiomech.2006.05.023  0.348
2006 Gregor RJ, Smith DW, Prilutsky BI. Mechanics of slope walking in the cat: quantification of muscle load, length change, and ankle extensor EMG patterns. Journal of Neurophysiology. 95: 1397-409. PMID 16207777 DOI: 10.1152/Jn.01300.2004  0.485
2006 Lay AN, Hass CJ, Gregor RJ. The effects of sloped surfaces on locomotion: a kinematic and kinetic analysis. Journal of Biomechanics. 39: 1621-8. PMID 15990102 DOI: 10.1016/J.Jbiomech.2005.05.005  0.411
2005 Lay AN, Hass CJ, Smith DW, Gregor RJ. Characterization of a system for studying human gait during slope walking. Journal of Applied Biomechanics. 21: 153-66. PMID 16082016 DOI: 10.1123/Jab.21.2.153  0.347
2005 Prilutsky BI, Sirota MG, Gregor RJ, Beloozerova IN. Quantification of motor cortex activity and full-body biomechanics during unconstrained locomotion. Journal of Neurophysiology. 94: 2959-69. PMID 15888524 DOI: 10.1152/Jn.00704.2004  0.304
2003 Waddell DE, Wyvill C, Gregor RJ. Upper Extremity Kinetics in Poultry Processing: A Comparison Between Two Different Cutting Tasks Journal of Applied Biomechanics. 19: 169-177. DOI: 10.1123/Jab.19.2.169  0.323
2003 Hass CJ, Waddell DE, Smith DW, Juncos JL, Wolf SL, Gregor RJ. PARKINSON??S DISEASE AFFECTS LOWER EXTREMITY JOINT MOMENTS DURING GAIT Medicine & Science in Sports & Exercise. 35: S128. DOI: 10.1097/00005768-200305001-00705  0.301
2002 Gregor SM, Perell KL, Rushatakankovit S, Miyamoto E, Muffoletto R, Gregor RJ. Lower extremity general muscle moment patterns in healthy individuals during recumbent cycling. Clinical Biomechanics (Bristol, Avon). 17: 123-9. PMID 11832262 DOI: 10.1016/S0268-0033(01)00112-7  0.4
2001 Perell KL, Gregor RJ, Scremin AME. Muscle-Strength and Gait-Speed Changes after Bicycle Exercise in Participants with Unilateral CVA Journal of Aging and Physical Activity. 9: 386-397. DOI: 10.1123/Japa.9.4.386  0.427
2001 Gregor RJ, Smith JL, Smith DW, Oliver A, Prilutsky BI. Hindlimb Kinetics and Neural Control during Slope Walking in the Cat: Unexpected Findings Journal of Applied Biomechanics. 17: 277-286. DOI: 10.1123/Jab.17.4.277  0.47
2001 Gregor RJ, Smith JL, Smith DW, Oliver A, Prilutsky BI. Hindlimb kinetics and neural control during slope walking in the cat: Unexpected findings Journal of Applied Biomechanics. 17: 277-286.  0.377
2000 Perell KL, Gregor RJ, Scremin AME. Bicycle Pedal Kinetics Following Force Symmetry Feedback Training in Subjects with Unilateral Cerebrovascular Accident Journal of Applied Biomechanics. 16: 124-141. DOI: 10.1123/Jab.16.2.124  0.348
1999 Wolf SL, Gregor RJ. Exploring Unique Applications of Kinetic Analyses to Movement in Older Adults Journal of Applied Biomechanics. 15: 75-83. DOI: 10.1123/Jab.15.1.75  0.307
1998 Prilutsky BI, Isaka T, Albrecht AM, Gregor RJ. Is coordination of two-joint leg muscles during load lifting consistent with the strategy of minimum fatigue? Journal of Biomechanics. 31: 1025-1034. PMID 9880059 DOI: 10.1016/S0021-9290(98)00116-X  0.464
1998 Prilutsky BI, Gregor RJ, Ryan MM. Coordination of two-joint rectus femoris and hamstrings during the swing phase of human walking and running Experimental Brain Research. 120: 479-486. PMID 9655233 DOI: 10.1007/S002210050421  0.416
1998 Isaka T, Gregor RJ, Kawamura S. Derivation of Reasonable Lifting Movement from Techniques Utilized in Skilled Weightlifter. Transactions of the Japan Society of Mechanical Engineers. C. 64: 2429-2436. DOI: 10.1299/Kikaic.64.2429  0.44
1998 Perell KL, Gregor RJ, Scremin AME. Lower Limb Cycling Mechanics in Subjects with Unilateral Cerebrovascular Accidents Journal of Applied Biomechanics. 14: 158-179. DOI: 10.1123/Jab.14.2.158  0.402
1997 Prilutsky BI, Gregor RJ. Strategy of Coordination of Two- and One-Joint Leg Muscles in Controlling an External Force Motor Control. 1: 92-116. DOI: 10.1123/Mcj.1.1.92  0.451
1997 Prilutsky BI, Gregor RJ. Strategy of coordination of two- and one-joint leg muscles in controlling an external force Motor Control. 1: 92-116.  0.356
1995 Wheeler JB, Gregor RJ, Broker JP. The Effect of Clipless Float Design on Shoe/Pedal interface Kinetics and Overuse Knee injuries during Cycling Journal of Applied Biomechanics. 11: 119-141. DOI: 10.1123/Jab.11.2.119  0.329
1994 Gregor RJ, Wheeler JB. Biomechanical factors associated with shoe/pedal interfaces. Implications for injury Sports Medicine. 17: 117-131. PMID 8171222 DOI: 10.2165/00007256-199417020-00004  0.334
1994 Gregor RJ, Abelew TA. Tendon force measurements and movement control: a review. Medicine and Science in Sports and Exercise. 26: 1359-1372. DOI: 10.1249/00005768-199411000-00011  0.43
1994 Broker JP, Gregor RJ. Mechanical energy management in cycling: source relations and energy expenditure. Medicine and Science in Sports and Exercise. 26: 64-74. DOI: 10.1249/00005768-199401000-00012  0.323
1994 Antti M, Komi PV, Korjus T, Navarro E, Gregor RJ. Body Segment Contributions to Javelin Throwing during Final Thrust Phases Journal of Applied Biomechanics. 10: 166-177. DOI: 10.1123/Jab.10.2.166  0.302
1993 Fowler EG, Gregor RJ, Hodgson JA, Roy RR. Relationship between ankle muscle and joint kinetics during the stance phase of locomotion in the cat. Journal of Biomechanics. 26: 465-83. PMID 8478350 DOI: 10.1016/0021-9290(93)90010-C  0.471
1993 Perell KL, Gregor RJ, Buford JA, Smith JL. Adaptive control for backward quadrupedal walking. IV. Hindlimb kinetics during stance and swing Journal of Neurophysiology. 70: 2226-2240. PMID 8120579 DOI: 10.1152/Jn.1993.70.6.2226  0.328
1993 Broker JP, Gregor RJ, Schmidt RA. Extrinsic Feedback and the Learning of Kinetic Patterns in Cycling Journal of Applied Biomechanics. 9: 111-123. DOI: 10.1123/Jab.9.2.111  0.317
1992 Mero A, Komi PV, Gregor RJ. Biomechanics of sprint running. A review. Sports Medicine (Auckland, N.Z.). 13: 376-92. PMID 1615256 DOI: 10.2165/00007256-199213060-00002  0.327
1992 Garhammer J, Gregor R. Propulsion Forces as a Function of Intensity for Weightlifting and Vertical Jumping Journal of Strength and Conditioning Research. 6: 129-134. DOI: 10.1519/1533-4287(1992)006<0129:Pfaafo>2.3.Co;2  0.319
1992 Kazuo F, Gregor RJ, Broker JP. Instantaneous Joint Power At Hip, Knee And Ankle Joint During Maximum Pedalling: 764 Medicine and Science in Sports and Exercise. 24. DOI: 10.1249/00005768-199205001-00765  0.323
1992 Wheeler JB, Gregor RJ, Broker JP. A Dual Piezoelectric Bicycle Pedal with Multiple Shoe/Pedal Interface Compatibility International Journal of Sport Biomechanics. 8: 251-258. DOI: 10.1123/Ijsb.8.3.251  0.359
1992 Ryan MM, Gregor RJ. EMG profiles of lower extremity muscles during cycling at constant workload and cadence Journal of Electromyography and Kinesiology. 2: 69-80. DOI: 10.1016/1050-6411(92)90018-E  0.42
1992 Kazuo F, Gregor RJ, Broker JP. Joint torque/velocity profiles in the human lower extremity during maximum pedalling and single joint concentric and eccentric actions Journal of Biomechanics. 25: 694. DOI: 10.1016/0021-9290(92)90299-G  0.344
1991 Gregor RJ, Komi PV, Browning RC, Järvinen M. A comparison of the triceps surae and residual muscle moments at the ankle during cycling. Journal of Biomechanics. 24: 287-97. PMID 2050705 DOI: 10.1016/0021-9290(91)90347-P  0.458
1991 Whiting WC, Gregor RJ, Halushka M. Body Segment and Release Parameter Contributions to New-Rules Javelin Throwing International Journal of Sport Biomechanics. 7: 111-124. DOI: 10.1123/Ijsb.7.2.111  0.313
1991 Tjoe J, Gregor R, Perell K, Roy R. A comparison of the forces produced by the lateral and medial heads of the gastrocnemius in the cat across a continuum of postural and movement demands Journal of Biomechanics. 24: 267. DOI: 10.1016/0021-9290(91)90278-U  0.372
1991 Perell K, Gregor R, Tjoe J, Roy R. Kinetic analysis of load sharing between ankle extensors of the cat hindlimb during walking and jumping Journal of Biomechanics. 24: 240. DOI: 10.1016/0021-9290(91)90195-S  0.346
1991 Fowler E, Gregor R, Hodgson J, Roy R. Relationships among ankle muscle moments and joint kinetics during the stance phase of locomotion in the cat Journal of Biomechanics. 24: 239. DOI: 10.1016/0021-9290(91)90194-R  0.412
1990 Rugg SG, Gregor RJ, Mandelbaum BR, Chiu L. In vivo moment arm calculations at the ankle using magnetic resonance imaging (MRI) Journal of Biomechanics. 23: 495-501. PMID 2373722 DOI: 10.1016/0021-9290(90)90305-M  0.312
1990 Lovely RG, Gregor RJ, Roy RR, Edgerton VR. Weight-bearing hindlimb stepping in treadmill-exercised adult spinal cats Brain Research. 514: 206-218. PMID 2357538 DOI: 10.1016/0006-8993(90)91417-F  0.367
1990 Broker JP, Gregor RJ. A Dual Piezoelectric Element Force Pedal for Kinetic Analysis of Cycling International Journal of Sport Biomechanics. 6: 394-403. DOI: 10.1123/Ijsb.6.4.394  0.34
1989 Pierotti DJ, Roy RR, Gregor RJ, Reggie Edgerton V. Electromyographic activity of cat hindlimb flexors and extensors during locomotion at varying speeds and inclines Brain Research. 481: 57-66. PMID 2706467 DOI: 10.1016/0006-8993(89)90485-X  0.435
1989 Fowler E, Gregor R, Hodgson J, Roy R, Broker J. The contribution of individual muscles to the ankle moment produced in the cat hindlimb Journal of Biomechanics. 22: 1011. DOI: 10.1016/0021-9290(89)90242-X  0.399
1988 Whiting WC, Gregor RJ, Finerman GA. Kinematic analysis of human upper extremity movements in boxing American Journal of Sports Medicine. 16: 130-136. PMID 3377096 DOI: 10.1177/036354658801600207  0.352
1988 Fowler EG, Gregor RJ, Roy RR. Differential kinetics of fast and slow ankle extensors during the paw-shake in the cat Experimental Neurology. 99: 219-224. PMID 3335241 DOI: 10.1016/0014-4886(88)90141-0  0.431
1988 Clarys JP, Cabri J, Gregor RJ. The muscle activity paradox during circular rhythmic leg movements Journal of Sports Sciences. 6: 229-237. PMID 3221426 DOI: 10.1080/02640418808729812  0.334
1988 Gregor RJ, Roy RR, Whiting WC, Lovely RG, Hodgson JA, Edgerton VR. Mechanical output of the cat soleus during treadmill locomotion: in vivo vs in situ characteristics. Journal of Biomechanics. 21: 721-32. PMID 3182876 DOI: 10.1016/0021-9290(88)90281-3  0.465
1988 Browning RC, Gregor RJ, Broker JP, Whiting WC. Effects of seat height changes on joint force and moment patterns in experienced cyclists Journal of Biomechanics. 21: 871. DOI: 10.1016/0021-9290(88)90078-4  0.379
1988 Ryan M, Gregor RJ, Hodgson JA. Neural patterning of lower extremity muscle during cycling at a constant load Journal of Biomechanics. 21: 854. DOI: 10.1016/0021-9290(88)90026-7  0.385
1987 Gregor RJ, Komi PV, Järvinen M. Achilles tendon forces during cycling. International Journal of Sports Medicine. 8: 9-14. PMID 3583522  0.344
1986 Gregor R, Roy R, Whiting W, Lovely R, Hodgson J, Edgerton V. Motor output of the cat soleus muscle: In-vivo vs in-situ characteristics Journal of Neuroscience Methods. 17: 188. DOI: 10.1016/0165-0270(86)90080-4  0.362
1985 Gregor RJ, Cavanagh PR, LaFortune M. Knee flexor moments during propulsion in cycling--a creative solution to Lombard's Paradox. Journal of Biomechanics. 18: 307-16. PMID 4008501 DOI: 10.1016/0021-9290(85)90286-6  0.455
1984 Sherif MH, Gregor RJ, Lyman J. Phasic relations in 90 degree abduction-adduction of the arm: the ARIMA representation. Journal of Biomechanics. 17: 215-24. PMID 6736058 DOI: 10.1016/0021-9290(84)90012-5  0.381
1984 Whiting WC, Gregor RJ, Roy RR, Edgerton VR. A technique for estimating mechanical work of individual muscles in the cat during treadmill locomotion Journal of Biomechanics. 17: 685-694. PMID 6501328 DOI: 10.1016/0021-9290(84)90122-2  0.441
1983 McKinley PA, Smith JL, Gregor RJ. Responses of Elbow Extensors to Landing Forces During Jump Downs in Cats Experimental Brain Research. 49: 218. PMID 6832259 DOI: 10.1007/Bf00238582  0.339
1983 Sherif MH, Gregor RJ, Liu LM, Roy RR, Hager CL. Correlation of myoelectric activity and muscle force during selected cat treadmill locomotion. Journal of Biomechanics. 16: 691-701. PMID 6643541 DOI: 10.1016/0021-9290(83)90079-9  0.398
1982 Whiting WC, Gregor RJ, Roy RR. 3-D ESTIMATES OF MUSCLE LENGTH CHANGES DURING CAT LOCOMOTION Medicine & Science in Sports & Exercise. 14: 144. DOI: 10.1249/00005768-198202000-00203  0.328
1981 Gregor RJ, Edgerton VR, Rozenek R, Castleman KR. Skeletal muscle properties and performance in elite female track athletes European Journal of Applied Physiology and Occupational Physiology. 47: 355-364. PMID 6460614 DOI: 10.1007/Bf02332963  0.4
1981 Gregor RJ, Hager CL, Roy RR, Whiting WC. IN VIVO FORCE VELOCITY CHARACTERISTICS OF FAST ANKLE EXTENSORS IN THE CAT HINDLIMS Medicine & Science in Sports & Exercise. 13: 128. DOI: 10.1249/00005768-198101320-00295  0.363
1981 Whiting WC, Gregor RJ, Roy RR, Hager CL. MUSCLE FORCE PRODUCTION DURING PAW SHAKES IN THE CAT HINDLIMS Medicine & Science in Sports & Exercise. 13: 128. DOI: 10.1249/00005768-198101320-00294  0.395
1981 Shapiro DC, Zernicke RF, Gregor RJ, Diestel JD. Evidence for generalized motor programs using gait pattern analysis Journal of Motor Behavior. 13: 33-47. DOI: 10.1080/00222895.1981.10735235  0.352
1981 Gregor R, Hager C, Roy R. In vivo muscle forces during unrestrained locomotion Journal of Biomechanics. 14: 489. DOI: 10.1016/0021-9290(81)90115-9  0.418
1980 Kinolik Z, Garhammer J, Gregor RJ. Kinetic and kinematic factors involved in the execution of front aerial somersaults. Medicine and Science in Sports and Exercise. 12: 352-356. DOI: 10.1249/00005768-198012050-00009  0.374
1979 Gregor RJ, Edgerton VR, Perrine JJ, Campion DS, DeBus C. Torque-velocity relationships and muscle fiber composition in elite female athletes. Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology. 47: 388-92. PMID 468696 DOI: 10.1152/Jappl.1979.47.2.388  0.342
1975 Cavanagh PR, Gregor RJ. Knee joint torque during the swing phase of normal treadmill walking. Journal of Biomechanics. 8: 337-44. PMID 1184605 DOI: 10.1016/0021-9290(75)90086-X  0.303
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