The motor unit. Anatomy and physiology.

Abstract:

:The physiological and anatomical properties of mammalian motor units are discussed, and the results of human and animal studies are compared. A physiological organization of motor units based on the mechanical properties of their associated muscle units is examined. It is concluded that such an organizing principle has broad universal application in both animal and human studies. An anatomical organization of muscle units by their association with their physiological properties and the histochemical profile of their muscle fibers is also considered. The anatomical organizing principle also has broad-ranging applicability. The organization of muscle units according to muscle architecture and innervation patterns is described and its potential applicability to considerations of muscle structure and function is discussed. It is concluded that a number of gaps in our knowledge of muscle unit organization have been identified, especially among human studies, but the potential to fill these gaps rapidly is great.

journal_name

Phys Ther

journal_title

Physical therapy

authors

English AW,Wolf SL

doi

10.1093/ptj/62.12.1763

subject

Has Abstract

pub_date

1982-12-01 00:00:00

pages

1763-72

issue

12

eissn

0031-9023

issn

1538-6724

journal_volume

62

pub_type

杂志文章,评审
  • Instructional style preferences: physical therapy faculty members in the United States.

    abstract::The purpose of this study was to describe the instructional styles of physical therapy faculty in basic professional programs in the United States in the academic year 1977-78. The Instructional Styles Inventory of Canfield and Canfield was used to test 311 respondents (61% of the total basic preparation faculty membe...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/60.10.1277

    authors: Payton OD,Hueter AE,McDonald M,Hirt S

    更新日期:1980-10-01 00:00:00

  • Comparison of the effects of exercise in water and on land on the rehabilitation of patients with intra-articular anterior cruciate ligament reconstructions.

    abstract:BACKGROUND AND PURPOSE:Exercises in water have been shown to be effective for improving strength and passive range of motion (PROM). Traditional rehabilitation following intra-articular anterior cruciate ligament (ACL) reconstruction has taken place on land. This study was designed to compare the effects of exercises i...

    journal_title:Physical therapy

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1093/ptj/74.8.710

    authors: Tovin BJ,Wolf SL,Greenfield BH,Crouse J,Woodfin BA

    更新日期:1994-08-01 00:00:00

  • The role of U.S. military physical therapists during recent combat campaigns.

    abstract::U.S. military physical therapists have a proud history of providing medical care during operational deployments ranging from war to complex humanitarian emergencies. Regardless of austerity of environment or intensity of hostility, U.S. military physical therapists serve as autonomous providers, evaluating and treatin...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.2522/ptj.20120136

    authors: Moore JH,Goffar SL,Teyhen DS,Pendergrass TL,Childs JD,Ficke JR

    更新日期:2013-09-01 00:00:00

  • Diabetes and associated risk factors in patients referred for physical therapy in a national primary care electronic medical record database.

    abstract:OBJECTIVE:The prevalence of diabetes (type 2) in the general population has increased dramatically over the last decade, yet patients with diabetes are rarely referred for physical therapy management of their condition. The majority of patients referred for outpatient physical therapy have musculoskeletal-related condi...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.2522/ptj.20080129

    authors: Kirkness CS,Marcus RL,Lastayo PC,Asche CV,Fritz JM

    更新日期:2008-11-01 00:00:00

  • Electromyographic activity of selected leg musculature in subjects with normal and chronically sprained ankles performing on a BAPS board.

    abstract::The purpose of this study was to evaluate the magnitude and temporal features of tibialis anterior, peroneus longus, and gastrocnemius muscle activity during exercises performed on a Biomechanical Ankle Platform System (BAPS) board by subjects with normal and chronically sprained ankles. Fourteen participants in each ...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/71.7.514

    authors: Soderberg GL,Cook TM,Rider SC,Stephenitch BL

    更新日期:1991-07-01 00:00:00

  • The Patient-Specific Functional Scale: measurement properties in patients with knee dysfunction.

    abstract:BACKGROUND AND PURPOSE:Assessing disability is important, and numerous interviewer-assisted and self-report questionnaires are used to accomplish this task. These questionnaires can be classified as being generic, condition or disease specific, or patient specific. The purpose of this study was to determine test-retest...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/77.8.820

    authors: Chatman AB,Hyams SP,Neel JM,Binkley JM,Stratford PW,Schomberg A,Stabler M

    更新日期:1997-08-01 00:00:00

  • Effect of quadriceps femoris muscle stretch on knee extension torque.

    abstract::Peak and angle specific knee extension torques produced after a quadriceps femoris muscle stretch and after a 15-second rest were compared to determine the effect of stretch on knee extension torque. Twenty healthy subjects performed eight maximum voluntary knee extensions at 90 degrees/sec under each condition. Altho...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/65.3.312

    authors: Bohannon RW,Gibson DF

    更新日期:1985-03-01 00:00:00

  • Analysis of rotation accompanying shoulder flexion.

    abstract::For effective rehabilitation of the shoulder, physical therapists must have correct knowledge of shoulder motion. Reports conflict on whether medial or lateral rotation of the humerus accompanies shoulder flexion. The purpose of this study was to determine the relationship between flexion and rotation at the glenohume...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/64.8.1214

    authors: Blakely RL,Palmer ML

    更新日期:1984-08-01 00:00:00

  • Interrater reliability of the extended ICF core set for stroke applied by physical therapists.

    abstract:BACKGROUND AND PURPOSE:The World Health Organization's International Classification of Functioning, Disability and Health (ICF) is gaining recognition in physical therapy. The Extended ICF Core Set for Stroke is a practical tool that represents a selection of categories from the whole classification and can be used alo...

    journal_title:Physical therapy

    pub_type: 临床试验,杂志文章

    doi:10.2522/ptj.20070211

    authors: Starrost K,Geyh S,Trautwein A,Grunow J,Ceballos-Baumann A,Prosiegel M,Stucki G,Cieza A

    更新日期:2008-07-01 00:00:00

  • Rehabilitation for balance and ambulation in a patient with attention impairment due to intracranial hemorrhage.

    abstract:BACKGROUND AND PURPOSE:The purpose of this case report is to describe physical therapy to improve the balance and ambulation of a 16-year-old patient with attention impairment following intracranial hemorrhage. CASE DESCRIPTION:The patient initially had frequent losses of balance, especially in distracting environment...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:

    authors: Tappan RS

    更新日期:2002-05-01 00:00:00

  • An exercise and education program improves well-being of new mothers: a randomized controlled trial.

    abstract:OBJECTIVE:The purpose of this study was to evaluate the effect of a physical therapy exercise and health care education program on the psychological well-being of new mothers. DESIGN:This was a randomized controlled trial. PARTICIPANTS:Primiparous and multiparous English-speaking women ready for discharge from The An...

    journal_title:Physical therapy

    pub_type: 杂志文章,随机对照试验

    doi:10.2522/ptj.20090139

    authors: Norman E,Sherburn M,Osborne RH,Galea MP

    更新日期:2010-03-01 00:00:00

  • Relative decreases in knee extension torque with increased knee extension velocities in stroke patients with hemiparesis.

    abstract::I examined the isokinetic knee extension torque (KET) produced by the paretic and nonparetic lower limbs of 27 stroke patients, with hemiparesis, at knee extension velocities (KEVs) of 30 degrees, 60 degrees, 120 degrees, and 180 degrees/sec. The purpose of this study was to determine whether the relative decreases in...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/67.8.1218

    authors: Bohannon RW

    更新日期:1987-08-01 00:00:00

  • Biomechanics in clinical practice.

    abstract::Evidence from dynamic biomechanical analyses of physical activities has greatly expanded our knowledge about the mechanical bases for human movement function with potential implications for further understanding movement dysfunction. The purpose of this review is to relate these findings to present knowledge about the...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/64.12.1860

    authors: Deusinger RH

    更新日期:1984-12-01 00:00:00

  • Association between characteristics of locomotion and accomplishment of life habits in children with cerebral palsy.

    abstract:BACKGROUND AND PURPOSE:"Handicap situation" is defined in the literature as "a disruption in the accomplishment of a person's life habits (activities of daily living and social roles)." The purpose of this study was to determine the strength of association between various types of locomotion and the accomplishment of l...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/78.5.458

    authors: Lepage C,Noreau L,Bernard PM

    更新日期:1998-05-01 00:00:00

  • Electrode placements for transcutaneous electrical nerve stimulation.

    abstract::Even though transcutaneous electrical nerve stimulation is gaining increasing acceptance as a noninvasive method of pain modulation, many professionals have not been adequately instructed in the many techniques involved in electrode placement. Alternative methods are presented that can be used when more commonly used ...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/58.12.1455

    authors: Mannheimer JS

    更新日期:1978-12-01 00:00:00

  • Relationship between functional electrical stimulation duty cycle and fatigue in wrist extensor muscles of patients with hemiparesis.

    abstract::The purpose of this study was to investigate, in a sample of patients with hemiparesis secondary to cerebrovascular accident, the relationship between the ratio of stimulus on time to off time and muscle fatigue using a commercial electrical stimulation unit. An experimental model was used to test the hypothesis that ...

    journal_title:Physical therapy

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1093/ptj/68.1.51

    authors: Packman-Braun R

    更新日期:1988-01-01 00:00:00

  • Sex differences in career expectations of physical therapist students.

    abstract:BACKGROUND AND PURPOSE:There are some sex differences in the career activities of physical therapists. The purpose of this study was to determine whether these sex differences are reflected in the career expectations of physical therapist students. SUBJECTS:Participants were 919 physical therapist students. METHODS:F...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.2522/ptj.20060285

    authors: Johanson MA

    更新日期:2007-09-01 00:00:00

  • Management of falls in community-dwelling older adults: clinical guidance statement from the Academy of Geriatric Physical Therapy of the American Physical Therapy Association.

    abstract:BACKGROUND:Falls in older adults are a major public health concern due to high prevalence, impact on health outcomes and quality of life, and treatment costs. Physical therapists can play a major role in reducing fall risk for older adults; however, existing clinical practice guidelines (CPGs) related to fall preventio...

    journal_title:Physical therapy

    pub_type: 杂志文章,实务指引

    doi:10.2522/ptj.20140415

    authors: Avin KG,Hanke TA,Kirk-Sanchez N,McDonough CM,Shubert TE,Hardage J,Hartley G,Academy of Geriatric Physical Therapy of the American Physical Therapy Association.

    更新日期:2015-06-01 00:00:00

  • Reliability, Validity, and Minimal Detectable Change of Four-Step Stair Climb Power Test in Community-Dwelling Older Adults.

    abstract:Background:Stair climb power is an important clinical measure of lower-extremity power. The stair climb power test (SCPT) was validated by requiring individuals to climb a full flight of stairs. A 4-step SCPT (4SCPT) would be more clinically feasible and easier to perform, yet its reliability and validity are unknown. ...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/pzx039

    authors: Ni M,Brown LG,Lawler D,Bean JF

    更新日期:2017-07-01 00:00:00

  • Determinants of function after total knee arthroplasty.

    abstract:BACKGROUND AND PURPOSE:Decreasing hospital stays for patients with total knee arthroplasties (TKAs) have a direct effect on rehabilitation. The identification of modifiable determinants of postsurgical functional status would help physical therapists plan for discharge from hospitals. The purpose of this study was to i...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:

    authors: Jones CA,Voaklander DC,Suarez-Alma ME

    更新日期:2003-08-01 00:00:00

  • Anatomy of the hand.

    abstract::The anatomy of the hand is efficiently organized to carry out a variety of complex tasks. These tasks require a combination of intricate movements and finely controlled force production. The shape of the bony anatomy in conjunction with the arrangement of soft tissues contributes to the complex kinesiology of the hand...

    journal_title:Physical therapy

    pub_type: 杂志文章,评审

    doi:10.1093/ptj/69.12.1007

    authors: Moran CA

    更新日期:1989-12-01 00:00:00

  • Low Back Pain--Related Disability in Parkinson Disease: Impact on Functional Mobility, Physical Activity, and Quality of Life.

    abstract:BACKGROUND:People with Parkinson disease (PD) frequently experience low back pain (LBP), yet the impact of LBP on functional mobility, physical activity, and quality of life (QOL) has not been described in PD. OBJECTIVE:The objectives of this study were to describe body positions and functional activities associated w...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/pzz094

    authors: Duncan RP,Van Dillen LR,Garbutt JM,Earhart GM,Perlmutter JS

    更新日期:2019-10-28 00:00:00

  • Serial Casting of the Ankle and Knee in a Child With Vascular Anomaly of the Calf Musculature: A Case Report.

    abstract:BACKGROUND AND PURPOSE:Contracture and toe-walking in children due to vascular anomaly of the calf musculature is rarely described, and there is limited evidence regarding treatment. The purpose of this case is to describe the novel use of serial casting, combining the knee and ankle, to reduce contracture in a child w...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/pzz147

    authors: Peyton C

    更新日期:2020-02-07 00:00:00

  • Central pattern generation of locomotion: a review of the evidence.

    abstract::Neural networks in the spinal cord, referred to as "central pattern generators" (CPGs), are capable of producing rhythmic movements, such as swimming, walking, and hopping, even when isolated from the brain and sensory inputs. This article reviews the evidence for CPGs governing locomotion and addresses other factors,...

    journal_title:Physical therapy

    pub_type: 杂志文章,评审

    doi:10.1093/ptj/82.1.69

    authors: MacKay-Lyons M

    更新日期:2002-01-01 00:00:00

  • Effects of assistive devices on cardiorespiratory demands in older adults.

    abstract:BACKGROUND AND PURPOSE:The purpose of this study was to quantify and compare cardiorespiratory demands imposed during unassisted ambulation and ambulation with various assistive devices in older adults. SUBJECTS:Ten volunteers (3 male, 7 female) who were not dependent on assistive devices for ambulation, with a mean a...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/76.12.1313

    authors: Foley MP,Prax B,Crowell R,Boone T

    更新日期:1996-12-01 00:00:00

  • The relationships among knee extensor torques produced during maximal voluntary contractions under various test conditions.

    abstract:BACKGROUND AND PURPOSE:The purpose of this study was to describe the relationships among measurements of torque produced during selected maximal voluntary contractions of the quadriceps femoris muscles. SUBJECTS:Twenty nondisabled women, ranging in age from 21 to 33 years (X = 25, SD = 3.5), volunteered to participate...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/74.7.674

    authors: Kues JM,Rothstein JM,Lamb RL

    更新日期:1994-07-01 00:00:00

  • Minimal Clinically Important Differences for Measures of Pain, Lung Function, Fatigue, and Functionality in Spinal Cord Injury.

    abstract:OBJECTIVE:The objective of this study was to determine the MCIDs for the numerical pain rating scale (NPRS), peak cough flow (PCF), peak expiratory flow (PEF), fatigue severity scale (FSS), and London chest activities of daily living scale (LCADL) in patients with SCI after rehabilitation. METHODS:Inpatients with SCI ...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/pzaa210

    authors: Sobreira M,Almeida MP,Gomes A,Lucas M,Oliveira A,Marques A

    更新日期:2020-12-17 00:00:00

  • Association of pain and physical dependency with depression in physically ill middle-aged and elderly persons.

    abstract::To investigate the relationship of pain and physical dependency to depression, the authors conducted a panel survey of 133 middle-aged and elderly persons with recent exacerbations of various physical illnesses. Of the original 133 subjects, 114 participated in two in-depth personal interviews conducted about three mo...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:

    authors: Williams AK,Schulz R

    更新日期:1988-08-01 00:00:00

  • Development of a test of motor-planning ability.

    abstract::Two hundred ten children ranging in age from 6 to 12 years were tested on a battery of items involving motor-planning ability. The most significant items from the original battery were selected through statistical analysis. From this selection, a brief and easy-to-administer test battery was devised that does not requ...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.1093/ptj/60.9.1129

    authors: Cornish SV

    更新日期:1980-09-01 00:00:00

  • Application of Intervention Mapping to the Development of a Complex Physical Therapist Intervention.

    abstract:BACKGROUND:Physical therapist interventions, such as those designed to change physical activity behavior, are often complex and multifaceted. In order to facilitate rigorous evaluation and implementation of these complex interventions into clinical practice, the development process must be comprehensive, systematic, an...

    journal_title:Physical therapy

    pub_type: 杂志文章

    doi:10.2522/ptj.20150387

    authors: Jones TM,Dear BF,Hush JM,Titov N,Dean CM

    更新日期:2016-12-01 00:00:00