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Nancy Byl, PhD, PT

TitleProfessor Emeritus
SchoolUCSF School of Medicine
DepartmentPhysical Therapy
Address1675 Owens Street
San Francisco CA 94158
Phone415-514-4816
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    Collapse Biography 
    Collapse Education and Training
    University of California, San FranciscoB.S.1963 Graduate Division (Physical Therapy)

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    Collapse Publications
    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.
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    1. Byl N, Zhang W, Coo S, Tomizuka M. Clinical impact of gait training enhanced with visual kinematic biofeedback: Patients with Parkinson's disease and patients stable post stroke. Neuropsychologia. 2015 Dec; 79(Pt B):332-43. PMID: 25912760.
      View in: PubMed
    2. Tsu AP, Abrams GM, Byl NN. Poststroke upper limb recovery. Semin Neurol. 2014 Nov; 34(5):485-95. PMID: 25520020.
      View in: PubMed
    3. Simkins M, Jacobs AB, Byl N, Rosen J. Stroke-induced synergistic phase shifting and its possible implications for recovery mechanisms. Exp Brain Res. 2014 Nov; 232(11):3489-99. PMID: 25034222.
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    4. Hinkley LB, Sekihara K, Owen JP, Westlake KP, Byl NN, Nagarajan SS. Complex-value coherence mapping reveals novel abnormal resting-state functional connectivity networks in task-specific focal hand dystonia. Front Neurol. 2013; 4:149. PMID: 24133480; PMCID: PMC3794296.
    5. Smoot B, Boyd BS, Byl N, Dodd M. Mechanosensitivity in the upper extremity following breast cancer treatment. J Hand Ther. 2014 Jan-Mar; 27(1):4-11. PMID: 24084387; PMCID: PMC3903181.
    6. Ganguly K, Byl NN, Abrams GM. Neurorehabilitation: motor recovery after stroke as an example. Ann Neurol. 2013 Sep; 74(3):373-81. PMID: 25813243.
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    7. Katz M, Byl NN, San Luciano M, Ostrem JL. Focal task-specific lower extremity dystonia associated with intense repetitive exercise: a case series. Parkinsonism Relat Disord. 2013 Nov; 19(11):1033-8. PMID: 23932354.
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    8. Byl NN, Abrams GM, Pitsch E, Fedulow I, Kim H, Simkins M, Nagarajan S, Rosen J. Chronic stroke survivors achieve comparable outcomes following virtual task specific repetitive training guided by a wearable robotic orthosis (UL-EXO7) and actual task specific repetitive training guided by a physical therapist. J Hand Ther. 2013 Oct-Dec; 26(4):343-52; quiz 352. PMID: 23911077.
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    9. Simkins M, Kim H, Abrams G, Byl N, Rosen J. Robotic unilateral and bilateral upper-limb movement training for stroke survivors afflicted by chronic hemiparesis. IEEE Int Conf Rehabil Robot. 2013 Jun; 2013:6650506. PMID: 24187321.
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    10. Westlake KP, Byl NN. Neural plasticity and implications for hand rehabilitation after neurological insult. J Hand Ther. 2013 Apr-Jun; 26(2):87-92; quiz 93. PMID: 23391829.
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    11. Simkins M, Fedulow I, Kim H, Abrams G, Byl N, Rosen J. Robotic Rehabilitation Game Design for Chronic Stroke. Games Health J. 2012 Dec; 1(6):422-30. PMID: 26192059.
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    12. Hinkley LB, Dolberg R, Honma S, Findlay A, Byl NN, Nagarajan SS. Aberrant Oscillatory Activity during Simple Movement in Task-Specific Focal Hand Dystonia. Front Neurol. 2012; 3:165. PMID: 23226140; PMCID: PMC3508423.
    13. Kim H, Miller LM, Fedulow I, Simkins M, Abrams GM, Byl N, Rosen J. Kinematic data analysis for post-stroke patients following bilateral versus unilateral rehabilitation with an upper limb wearable robotic system. IEEE Trans Neural Syst Rehabil Eng. 2013 Mar; 21(2):153-64. PMID: 22855233.
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    14. Byl NN. Mobility training using a bionic knee orthosis in patients in a post-stroke chronic state: a case series. J Med Case Rep. 2012; 6:216. PMID: 22823961; PMCID: PMC3411435.
    15. Westlake KP, Hinkley LB, Bucci M, Guggisberg AG, Byl N, Findlay AM, Henry RG, Nagarajan SS. Resting state a-band functional connectivity and recovery after stroke. Exp Neurol. 2012 Sep; 237(1):160-9. PMID: 22750324; PMCID: PMC3646713.
    16. Kim H, Miller LM, Byl N, Abrams GM, Rosen J. Redundancy resolution of the human arm and an upper limb exoskeleton. IEEE Trans Biomed Eng. 2012 Jun; 59(6):1770-9. PMID: 22510944.
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    17. Byl NN. Diagnosis and management of focal hand dystonia in a rheumatology practice. Curr Opin Rheumatol. 2012 Mar; 24(2):222-31. PMID: 22273716.
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    18. Dolberg R, Hinkley LB, Honma S, Zhu Z, Findlay AM, Byl NN, Nagarajan SS. Amplitude and timing of somatosensory cortex activity in task-specific focal hand dystonia. Clin Neurophysiol. 2011 Dec; 122(12):2441-51. PMID: 21802357; PMCID: PMC3327722.
    19. Bae J, Kong K, Byl N, Tomizuka M. A mobile gait monitoring system for abnormal gait diagnosis and rehabilitation: a pilot study for Parkinson disease patients. J Biomech Eng. 2011 Apr; 133(4):041005. PMID: 21428679.
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    20. Eisner MD, Iribarren C, Blanc PD, Yelin EH, Ackerson L, Byl N, Omachi TA, Sidney S, Katz PP. Development of disability in chronic obstructive pulmonary disease: beyond lung function. Thorax. 2011 Feb; 66(2):108-14. PMID: 21047868; PMCID: PMC3111223.
    21. Gorman SL, Radtka S, Melnick ME, Abrams GM, Byl NN. Development and validation of the Function In Sitting Test in adults with acute stroke. J Neurol Phys Ther. 2010 Sep; 34(3):150-60. PMID: 20716989.
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    22. Smoot B, Wong J, Cooper B, Wanek L, Topp K, Byl N, Dodd M. Upper extremity impairments in women with or without lymphedema following breast cancer treatment. J Cancer Surviv. 2010 Jun; 4(2):167-78. PMID: 20373044; PMCID: PMC2882040.
    23. Coq JO, Barr AE, Strata F, Russier M, Kietrys DM, Merzenich MM, Byl NN, Barbe MF. Peripheral and central changes combine to induce motor behavioral deficits in a moderate repetition task. Exp Neurol. 2009 Dec; 220(2):234-45. PMID: 19686738; PMCID: PMC2783426.
    24. Lui AJ, Byl NN. A systematic review of the effect of moderate intensity exercise on function and disease progression in amyotrophic lateral sclerosis. J Neurol Phys Ther. 2009 Jun; 33(2):68-87. PMID: 19556916.
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    25. McKenzie AL, Goldman S, Barrango C, Shrime M, Wong T, Byl N. Differences in physical characteristics and response to rehabilitation for patients with hand dystonia: musicians' cramp compared to writers' cramp. J Hand Ther. 2009 Apr-Jun; 22(2):172-81; quiz 182. PMID: 19389604.
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    26. Byl NN. Focal hand dystonia: a historical perspective from a clinician scholar. J Hand Ther. 2009 Apr-Jun; 22(2):105-8. PMID: 19285831.
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    27. Byl NN, Archer ES, McKenzie A. Focal hand dystonia: effectiveness of a home program of fitness and learning-based sensorimotor and memory training. J Hand Ther. 2009 Apr-Jun; 22(2):183-97; quiz 198. PMID: 19285832.
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    28. Hinkley LB, Webster RL, Byl NN, Nagarajan SS. Neuroimaging characteristics of patients with focal hand dystonia. J Hand Ther. 2009 Apr-Jun; 22(2):125-34; quiz 135. PMID: 19217255.
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    29. Byl NN, Pitsch EA, Abrams GM. Functional outcomes can vary by dose: learning-based sensorimotor training for patients stable poststroke. Neurorehabil Neural Repair. 2008 Sep-Oct; 22(5):494-504. PMID: 18780884.
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    30. Eisner MD, Blanc PD, Yelin EH, Sidney S, Katz PP, Ackerson L, Lathon P, Tolstykh I, Omachi T, Byl N, Iribarren C. COPD as a systemic disease: impact on physical functional limitations. Am J Med. 2008 Sep; 121(9):789-96. PMID: 18724969; PMCID: PMC2548403.
    31. Eisner MD, Iribarren C, Yelin EH, Sidney S, Katz PP, Ackerson L, Lathon P, Tolstykh I, Omachi T, Byl N, Blanc PD. Pulmonary function and the risk of functional limitation in chronic obstructive pulmonary disease. Am J Epidemiol. 2008 May 1; 167(9):1090-101. PMID: 18343879; PMCID: PMC2610529.
    32. Ryerson S, Byl NN, Brown DA, Wong RA, Hidler JM. Altered trunk position sense and its relation to balance functions in people post-stroke. J Neurol Phys Ther. 2008 Mar; 32(1):14-20. PMID: 18463551.
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    33. Coq JO, Strata F, Russier M, Safadi FF, Merzenich MM, Byl NN, Barbe MF. Impact of neonatal asphyxia and hind limb immobilization on musculoskeletal tissues and S1 map organization: implications for cerebral palsy. Exp Neurol. 2008 Mar; 210(1):95-108. PMID: 18061167.
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    34. Wampler MA, Topp KS, Miaskowski C, Byl NN, Rugo HS, Hamel K. Quantitative and clinical description of postural instability in women with breast cancer treated with taxane chemotherapy. Arch Phys Med Rehabil. 2007 Aug; 88(8):1002-8. PMID: 17678662.
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    35. Byl NN. Learning-based animal models: task-specific focal hand dystonia. ILAR J. 2007; 48(4):411-31. PMID: 17712226.
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    36. Estilaei SK, Byl NN. An evidence-based review of magnetic resonance angiography for diagnosing arterial thoracic outlet syndrome. J Hand Ther. 2006 Oct-Dec; 19(4):410-9; quiz 420. PMID: 17056401.
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    37. Mehling WE, Hamel KA, Acree M, Byl N, Hecht FM. Randomized, controlled trial of breath therapy for patients with chronic low-back pain. Altern Ther Health Med. 2005 Jul-Aug; 11(4):44-52. PMID: 16053121.
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    38. Byl NN. Focal hand dystonia may result from aberrant neuroplasticity. Adv Neurol. 2004; 94:19-28. PMID: 14509650.
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    39. Strata F, Coq JO, Byl N, Merzenich MM. Effects of sensorimotor restriction and anoxia on gait and motor cortex organization: implications for a rodent model of cerebral palsy. Neuroscience. 2004; 129(1):141-56. PMID: 15489037.
      View in: PubMed
    40. Byl NN. What can we learn from animal models of focal hand dystonia? Rev Neurol (Paris). 2003 Oct; 159(10 Pt 1):857-73. PMID: 14615674.
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    41. Byl NN, Nagajaran S, McKenzie AL. Effect of sensory discrimination training on structure and function in patients with focal hand dystonia: a case series. Arch Phys Med Rehabil. 2003 Oct; 84(10):1505-14. PMID: 14586919.
      View in: PubMed
    42. McKenzie AL, Nagarajan SS, Roberts TP, Merzenich MM, Byl NN. Somatosensory representation of the digits and clinical performance in patients with focal hand dystonia. Am J Phys Med Rehabil. 2003 Oct; 82(10):737-49. PMID: 14508403.
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    43. Byl N, Roderick J, Mohamed O, Hanny M, Kotler J, Smith A, Tang M, Abrams G. Effectiveness of sensory and motor rehabilitation of the upper limb following the principles of neuroplasticity: patients stable poststroke. Neurorehabil Neural Repair. 2003 Sep; 17(3):176-91. PMID: 14503438.
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    44. Byl C, Puttlitz C, Byl N, Lotz J, Topp K. Strain in the median and ulnar nerves during upper-extremity positioning. J Hand Surg Am. 2002 Nov; 27(6):1032-40. PMID: 12457354.
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    45. Byl N, Leano J, Cheney LK. The Byl-Cheney-Boczai Sensory Discriminator: reliability, validity, and responsiveness for testing stereognosis. J Hand Ther. 2002 Oct-Dec; 15(4):315-30. PMID: 12449346.
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    46. Blake DT, Byl NN, Merzenich MM. Representation of the hand in the cerebral cortex. Behav Brain Res. 2002 Sep 20; 135(1-2):179-84. PMID: 12356448.
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    47. Franklin B, Bonzheim K, Warren J, Haapaniemi S, Byl N, Gordon N. Effects of a contemporary, exercise-based rehabilitation and cardiovascular risk-reduction program on coronary patients with abnormal baseline risk factors. Chest. 2002 Jul; 122(1):338-43. PMID: 12114378.
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    48. Blake DT, Byl NN, Cheung S, Bedenbaugh P, Nagarajan S, Lamb M, Merzenich M. Sensory representation abnormalities that parallel focal hand dystonia in a primate model. Somatosens Mot Res. 2002; 19(4):347-57. PMID: 12590836; PMCID: PMC2826977.
    49. Byl NN, Nagarajan SS, Merzenich MM, Roberts T, McKenzie A. Correlation of clinical neuromusculoskeletal and central somatosensory performance: variability in controls and patients with severe and mild focal hand dystonia. Neural Plast. 2002; 9(3):177-203. PMID: 12757370; PMCID: PMC2565401.
    50. Byl NN, McKenzie A. Treatment effectiveness for patients with a history of repetitive hand use and focal hand dystonia: a planned, prospective follow-up study. J Hand Ther. 2000 Oct-Dec; 13(4):289-301. PMID: 11129254.
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    51. Byl NN, McKenzie A, Nagarajan SS. Differences in somatosensory hand organization in a healthy flutist and a flutist with focal hand dystonia: a case report. J Hand Ther. 2000 Oct-Dec; 13(4):302-9. PMID: 11129255.
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    52. Lenz FA, Byl NN. Reorganization in the cutaneous core of the human thalamic principal somatic sensory nucleus (Ventral caudal) in patients with dystonia. J Neurophysiol. 1999 Dec; 82(6):3204-12. PMID: 10601454.
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    53. Byl NN, Kohlhase W, Engel G. Functional limitation immediately after cast immobilization and closed reduction of distal radius fractures: preliminary report. J Hand Ther. 1999 Jul-Sep; 12(3):201-11. PMID: 10459528.
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    54. Topp KS, Byl NN. Movement dysfunction following repetitive hand opening and closing: anatomical analysis in Owl monkeys. Mov Disord. 1999 Mar; 14(2):295-306. PMID: 10091624.
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    55. Nagarajan SS, Blake DT, Wright BA, Byl N, Merzenich MM. Practice-related improvements in somatosensory interval discrimination are temporally specific but generalize across skin location, hemisphere, and modality. J Neurosci. 1998 Feb 15; 18(4):1559-70. PMID: 9454861.
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    56. Ochs CW, Bradley RJ, Katholi CR, Byl NN, Brown VM, Jones LL, Shohet JS. Symptoms of patients with myasthenia gravis receiving treatment. J Med. 1998; 29(1-2):1-12. PMID: 9704288.
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    57. Spengler F, Roberts TP, Poeppel D, Byl N, Wang X, Rowley HA, Merzenich MM. Learning transfer and neuronal plasticity in humans trained in tactile discrimination. Neurosci Lett. 1997 Sep 5; 232(3):151-4. PMID: 9310302.
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    58. Byl NN, Holland S, Jurek A, Hu SS. Postural imbalance and vibratory sensitivity in patients with idiopathic scoliosis: implications for treatment. J Orthop Sports Phys Ther. 1997 Aug; 26(2):60-8. PMID: 9243403.
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    59. Jobst EE, Melnick ME, Byl NN, Dowling GA, Aminoff MJ. Sensory perception in Parkinson disease. Arch Neurol. 1997 Apr; 54(4):450-4. PMID: 9109747.
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    60. Byl NN, Melnick M. The neural consequences of repetition: clinical implications of a learning hypothesis. J Hand Ther. 1997 Apr-Jun; 10(2):160-74. PMID: 9188035.
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    61. Byl NN, Merzenich MM, Cheung S, Bedenbaugh P, Nagarajan SS, Jenkins WM. A primate model for studying focal dystonia and repetitive strain injury: effects on the primary somatosensory cortex. Phys Ther. 1997 Mar; 77(3):269-84. PMID: 9062569.
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    62. Byl NN, Merzenich MM, Jenkins WM. A primate genesis model of focal dystonia and repetitive strain injury: I. Learning-induced dedifferentiation of the representation of the hand in the primary somatosensory cortex in adult monkeys. Neurology. 1996 Aug; 47(2):508-20. PMID: 8757029.
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    63. Byl N, Wilson F, Merzenich M, Melnick M, Scott P, Oakes A, McKenzie A. Sensory dysfunction associated with repetitive strain injuries of tendinitis and focal hand dystonia: a comparative study. J Orthop Sports Phys Ther. 1996 Apr; 23(4):234-44. PMID: 8775368.
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    64. Merzenich M, Wright B, Jenkins W, Xerri C, Byl N, Miller S, Tallal P. Cortical plasticity underlying perceptual, motor, and cognitive skill development: implications for neurorehabilitation. Cold Spring Harb Symp Quant Biol. 1996; 61:1-8. PMID: 9246429.
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    65. Byl N, Hamati D, Melnick M, Wilson F, McKenzie A. The sensory consequences of repetitive strain injury in musicians: focal dystonia of the hand. J Back Musculoskelet Rehabil. 1996 Jan 1; 7(1):27-39. PMID: 24572553.
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    66. Byl NN. The use of ultrasound as an enhancer for transcutaneous drug delivery: phonophoresis. Phys Ther. 1995 Jun; 75(6):539-53. PMID: 7770499.
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    67. Friedlander AL, Genant HK, Sadowsky S, Byl NN, Gl├╝er CC. A two-year program of aerobics and weight training enhances bone mineral density of young women. J Bone Miner Res. 1995 Apr; 10(4):574-85. PMID: 7610928.
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    68. Byl NN, McKenzie AL, West JM, Whitney JD, Hunt TK, Hopf HW, Scheuenstuhl H. Pulsed microamperage stimulation: a controlled study of healing of surgically induced wounds in Yucatan pigs. Phys Ther. 1994 Mar; 74(3):201-13; discussion 213-8. PMID: 8115454.
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    69. Byl NN, McKenzie A, Wong T, West J, Hunt TK. Incisional wound healing: a controlled study of low and high dose ultrasound. J Orthop Sports Phys Ther. 1993 Nov; 18(5):619-28. PMID: 8268965.
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    70. Byl NN, McKenzie A, Halliday B, Wong T, O'Connell J. The effects of phonophoresis with corticosteroids: a controlled pilot study. J Orthop Sports Phys Ther. 1993 Nov; 18(5):590-600. PMID: 8268961.
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    71. Byl NN, Gray JM. Complex balance reactions in different sensory conditions: adolescents with and without idiopathic scoliosis. J Orthop Res. 1993 Mar; 11(2):215-27. PMID: 8483034.
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    72. Byl N, McKenzie AL, West JM, Whitney JD, Hunt TK, Scheuenstuhl HA. Low-dose ultrasound effects on wound healing: a controlled study with Yucatan pigs. Arch Phys Med Rehabil. 1992 Jul; 73(7):656-64. PMID: 1622322.
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    73. Grady D, Halloran B, Cummings S, Leveille S, Wells L, Black D, Byl N. 1,25-Dihydroxyvitamin D3 and muscle strength in the elderly: a randomized controlled trial. J Clin Endocrinol Metab. 1991 Nov; 73(5):1111-7. PMID: 1939527.
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    74. Friedlander AL, Block JE, Byl NN, Stubbs HA, Sadowsky HS, Genant HK. Isokinetic limb and trunk muscle performance testing: short-term reliability. J Orthop Sports Phys Ther. 1991; 14(5):220-4. PMID: 18796815.
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    75. Byl N, Byl FM, Rosenthal JH. Interaction of spatial perception, vestibular function, and exercise in young school age boys with learning disabilities. Percept Mot Skills. 1989 Jun; 68(3 Pt 1):727-38. PMID: 2787498.
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    76. Byl NN, Richards S, Asturias J. Intrarater and interrater reliability of strength measurements of the biceps and deltoid using a hand held dynamometer. J Orthop Sports Phys Ther. 1988; 9(12):395-8. PMID: 18796982.
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    77. Dienst ER, Byl N. Evaluation of an educational program in health care teams. J Community Health. 1981; 6(4):282-98. PMID: 7328194.
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    78. Byl N. Teaching the concepts of rehabilitation in a primary care setting. Arch Phys Med Rehabil. 1979 May; 60(5):230-6. PMID: 454116.
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    79. Byl N, Sykes B. Work and health problems: an approach to management for the professional and the community. Community Health (Bristol). 1978 Feb; 9(3):149-58. PMID: 630835.
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    80. Byl N, Clever LH. Stable chronic disease: a behavioral model. J Am Geriatr Soc. 1977 Sep; 25(9):408-14. PMID: 893911.
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    81. Brodsky CM, Byl N. Treatment of work-related health problems in a work clinic. Hosp Community Psychiatry. 1976 Feb; 27(2):116-20. PMID: 767242.
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