Mechanisms that contribute to differences in motor performance between young and old adults

The information capacity of the human motor system in controlling the amplitude of movement.

1992 • 6,231 citations

The information capacity of the human motor system in controlling the amplitude of movement.

1954 • 5,915 citations

Signal-dependent noise determines motor planning

1998 • 2,390 citations

Functional and clinical significance of skeletal muscle architecture

2000 • 1,058 citations

Models of recruitment and rate coding organization in motor-unit pools

1993 • 930 citations

The Fourier approach to the identification of functional coupling between neuronal spike trains

1989 • 869 citations

Skeletal muscle adaptations during early phase of heavy-resistance training in men and women

1994 • 795 citations

Physiological changes in ageing muscles

1973 • 720 citations

A mechanism for increased contractile strength of human pennate muscle in response to strength training: changes in muscle architecture

2001 • 701 citations

The numbers of limb motor neurons in the human lumbosacral cord throughout life

1977 • 574 citations

The frequency content of common synaptic inputs to motoneurones studied during voluntary isometric contraction in man.

1993 • 471 citations

Reduced control of motor output in a human hand muscle of elderly subjects during submaximal contractions

1993 • 466 citations

Motor-Unit Synchronization Increases EMG Amplitude and Decreases Force Steadiness of Simulated Contractions

2000 • 462 citations

Short‐term synchronization of intercostal motoneurone activity.

1976 • 402 citations

Steadiness is reduced and motor unit discharge is more variable in old adults

2000 • 391 citations

Motor unit physiology: Some unresolved issues

2001 • 378 citations

Effects of motor unit losses on strength in older men and women

1993 • 377 citations

Relation between location of a motor unit in the human biceps brachii and its critical firing levels for different tasks

1984 • 344 citations

Cortical drives to human muscle: the Piper and related rhythms

2000 • 337 citations

Noise, information transmission, and force variability.

1999 • 333 citations

Neuronal mechanisms underlying physiological tremor

1978 • 313 citations

Organization of motor output in slow finger movements in man.

1993 • 299 citations

Rhythmicity, synchronization and binding in human and primate motor systems

1998 • 269 citations

On the use and interpretation of cross-correlation measurements in the mammalian central nervous system

1979 • 267 citations

Estimating the strength of common input to human motoneurons from the cross‐correlogram.

1992 • 266 citations

Effects of Aging on Motor-Unit Control Properties

1999 • 251 citations

Older adults are less steady during submaximal isometric contractions with the knee extensor muscles

2002 • 245 citations

Training-related enhancement in the control of motor output in elderly humans

1994 • 237 citations

Motor Unit Synchronization and Neuromuscular Performance

2002 • 230 citations

An electromyographic analysis of compartments in cat lateral gastrocnemius muscle during unrestrained locomotion

1984 • 216 citations

Grasp Force Control in Older Adults

1991 • 207 citations

A Biomechanical Perspective on Spinal Mechanisms of Coordinated Muscular Action: An Architecture Principle

1994 • 204 citations

Low- or High-Intensity Strength Training Partially Restores Impaired Quadriceps Force Accuracy and Steadiness in Aged Adults

2001 • 198 citations

Load-Independent Contributions From Motor-Unit Synchronization to Human Physiological Tremor

1999 • 197 citations

Differences in the activation of m. biceps brachii in the control of slow isotonic movements and isometric contractions

1989 • 189 citations

Human motor-unit recruitment during isometric contractions and repeated dynamic movements

1987 • 189 citations

Experimental Simulation of Cat Electromyogram: Evidence for Algebraic Summation of Motor-Unit Action-Potential Trains

2001 • 186 citations

Differences in coordination of elbow flexor muscles in force tasks and in movement tasks

1990 • 179 citations

On the function of muscle and reflex partitioning

1989 • 179 citations

Proprioceptive coordination of movement sequences: role of velocity and position information

1994 • 173 citations

Coactivation of the antagonist muscle does not covary with steadiness in old adults

2000 • 164 citations

Common Drive in Motor Units of a Synergistic Muscle Pair

2002 • 163 citations

Firing rate of individual motor units in voluntary contraction of abductor digiti minimi muscle in man

1973 • 157 citations

Strength training improves the steadiness of slow lengthening contractions performed by old adults

1999 • 151 citations

Alpha and Gamma Motor Systems

1995 • 144 citations

A study of the muscle force waveform using a population stochastic model of skeletal muscle

1982 • 143 citations

Motor unit synchronisation is enhanced during slow lengthening contractions of a hand muscle

2002 • 133 citations

Anatomical and Functional Investigations on the Articulation of the Human Fingers

1955 • 130 citations

Decrease in human neurones with age

1940 • 126 citations

Old Adults Exhibit Greater Motor Output Variability Than Young Adults Only During Rapid Discrete Isometric Contractions

2001 • 123 citations

A comparison of prehension force control in young and elderly individuals

1996 • 121 citations

Coactivation to Reduce Variability in the Elderly

1998 • 120 citations

Skilled Finger Movement Exercise Improves Hand Function

2001 • 118 citations

Motor-Unit Synchronization Is Not Responsible for Larger Motor-Unit Forces in Old Adults

2000 • 116 citations

Error, stress and the role of neuromotor noise in space oriented behaviour

2000 • 116 citations

Older Adults Use a Unique Strategy to Lift Inertial Loads With the Elbow Flexor Muscles

2000 • 115 citations

Motor control and kinetics during low level concentric and eccentric contractions in man

1996 • 102 citations

Modeling Variability of Force During Isometric Contractions of the Quadriceps Femoris

2002 • 102 citations

Controlling the Statistics of Action: Obstacle Avoidance

2002 • 98 citations

Strength training can improve steadiness in persons with essential tremor

2000 • 97 citations

Discharge pattern of human motor units during dynamic concentric and eccentric contractions

1998 • 96 citations

Motor-Unit Synchronization Alters Spike-Triggered Average Force in Simulated Contractions

2002 • 95 citations

The significance of grouping of motor unit activity

1962 • 88 citations

Common modulation of motor unit pairs during slow wrist movement in man

1999 • 84 citations

The influence of age on the assessment of motor unit activation in a human hand muscle

1996 • 83 citations

Motor Control of Low-Threshold Motor Units in the Human Trapezius Muscle

2001 • 81 citations

Modification of myo-electric power spectrum in fatigue from 15% maximal voluntary contraction of human elbow flexor muscles, to limit of endurance: reflection of conduction velocity variation and/or centrally mediated mechanisms?

1992 • 78 citations

Age and contraction type influence motor output variability in rapid discrete tasks

2002 • 77 citations

Modulation of synchrony between single motor units during precision grip tasks in humans

2002 • 77 citations

Task-related behaviour of motor units in different regions of the human masseter muscle

1992 • 75 citations

Single motor unit activity in relation to pulsatile motor output in human finger movements

1999 • 75 citations

Effect of task on the degree of synchronization of intrinsic hand muscle motor units in man

1991 • 71 citations

The unilateral and bilateral control of motor unit pairs in the first dorsal interosseous and paraspinal muscles in man

1999 • 64 citations

Spatial differences in fatigue‐associated electromyographic behaviour of the human first dorsal interosseus muscle.

1995 • 61 citations

Muscle Regionalization

1998 • 58 citations

The effect of visual feedback on physiological muscle tremor

1974 • 50 citations

Macro-EMG and motor unit recruitment threshold: differences between the young and the aged

1994 • 48 citations

Nonuniform activation of the agonist muscle does not covary with index finger acceleration in old adults

2002 • 43 citations

Myo-electric signals from two extrinsic hand muscles and force tremor during isometric handgrip

1993 • 42 citations

Tai Chi Practice Reduces Movement Force Variability for Seniors

1999 • 39 citations

The effect of strength training on control of force in older men and women

2002 • 33 citations

The effects of motion on force control abilities

2001 • 29 citations

Fatigue-associated changes in the electromyogram of the human first dorsal interosseous muscle

1999 • 28 citations

Task-dependent differences between mono- and bi-articular heads of the triceps brachii muscle

1994 • 28 citations

Analysis of firing behaviour of human motoneurones within ‘subprimary range’

1999 • 25 citations

On the Relation between Motor-Unit Discharge and Physiological Tremor

1995 • 24 citations

Impulse and Movement Space—Time Variability

1999 • 21 citations

STRENGTH TRAINING DOES NOT IMPROVE THE STEADINESS OF MUSCLE CONTRACTIONS IN THE KNEE EXTENSORS OF OLDER ADULTS

2001 • 8 citations

THE STEADINESS OF ISOMETRIC CONTRACTIONS IS SIMILAR BETWEEN UPPER AND LOWER EXTREMITY MUSCLE GROUPS

2002 • 5 citations