A Device for Measuring Reaction Time and Movement Time of a Knee-Extension Movement

1965 ◽  
Vol 36 (3) ◽  
pp. 377-379
Author(s):  
Barry A. Kerr
Keyword(s):  
Reaction Time ◽  
Movement Time ◽  
Knee Extension ◽  
Measuring Reaction Time

Relationship of Reaction Time and Movement Time in a Gross Motor Skill

1973 ◽  
Vol 36 (2) ◽  
pp. 453-454 ◽  
Author(s):  
Richard Groves
Keyword(s):  
Reaction Time ◽  
Motor Skill ◽  
Movement Time ◽  
Gross Motor ◽  
Moment Coefficient ◽  
Relationship Of ◽  
Gross Motor Skill

The purpose of the study was to investigate the independence of reaction time (RT) and movement time (MT) in a gross motor skill, the racing start in swimming. RT and MT were quantified for each S by counting frames of film for five trials. The Pearson product-moment coefficient of –.231 ( p > .05) between means indicated that RT and MT were independent factors.

Effects of Midline Crossing on Reaction Time and Movement Time with Adolescents Classified as Mildly Mentally Retarded

1993 ◽  
Vol 10 (3) ◽  
pp. 269-280 ◽  
Author(s):  
Bobby L. Eason ◽  
Paul R. Surburg
Keyword(s):  
Factor Analysis ◽  
Mental Retardation ◽  
Reaction Time ◽  
Sensory Integration ◽  
Movement Time ◽  
Assessment Process ◽  
Mild Mental Retardation ◽  
Midline Crossing ◽  
Performance Deterioration ◽  
Temporal Assessment

Students with mild mental retardation (MMR) often demonstrate reluctance, confusion, or performance deterioration when required to perform tasks that require looking, reaching, or stepping across the body’s midline. Sensory integration theorists contend that midline crossing is a predictor of bilateral integration. However, in factor analysis studies, very little variance is accounted for by midline crossing data. The present study viewed midline crossing as a function of information processing and utilized a temporal assessment process rather than the usual spatial assessment process. Results indicated that subjects classified as MMR experienced slower choice reaction time (CRT) and movement time (MT) for stimuli placed across the body’s midline. However, higher functioning subjects with MMR performed equally well on CRT for ipsilateral and crosslateral tasks. The data provide evidence for a developmental hypothesis as an explanation for midline crossing problems.

Reduction of Reaction Time Preceding Increased Complexity of Movement

1992 ◽  
Vol 74 (3) ◽  
pp. 819-824 ◽  
Author(s):  
Bruce Etnyre
Keyword(s):  
Reaction Time ◽  
Auditory Stimulus ◽  
Movement Time ◽  
Movement Response ◽  
Initiation Phase ◽  
Response Alternatives

In 1960 Henry and Rogers reported reaction time (RT) increased with increased response complexity while response alternatives were held constant. The purpose of the present study was to observe the effects of RT and movement time (MT) when subjects attempted to separate initiation of a task from the subsequent movement response, 24 subjects performed a ball-striking movement in response to an auditory stimulus. In the experimental condition the subjects were instructed to complete initiation as quickly as possible and then make a separate subsequent movement to strike a ball. It was concluded that subjects could not completely separate the initiation phase from the movement phase of the task but could significantly reduce the RT by focusing on the initiation portion of the task.

Individual Differences in Arm Strength, Speed, Reaction Time, and Three Serial Reaction Time-Movement Time “Programs”

1968 ◽  
Vol 26 (2) ◽  
pp. 651-658 ◽  
Author(s):  
Leon E. Smith
Keyword(s):  
Individual Differences ◽  
Reaction Time ◽  
Motor Performance ◽  
Movement Time ◽  
College Men ◽  
Serial Reaction Time ◽  
Limb Movements ◽  
Serial Reaction ◽  
Arm Strength ◽  
Time Movement

The motor performance of 32 college men was measured on the following tests: arm strength, arm reaction and movement times, arm-and-leg serial reaction and movement times. Specificity of variance of individual differences was found for single, simple, and discrete limb movements and for three programmed series of large RT-MT movements which involved 240 responses.

Movement Amplitude, Pointing Accuracy and Choice-Reaction Time

1976 ◽  
Vol 43 (3) ◽  
pp. 807-812 ◽  
Author(s):  
Andras Semjen ◽  
Jean Requin
Keyword(s):  
Reaction Time ◽  
Linear Relationship ◽  
Choice Reaction Time ◽  
Movement Time ◽  
Movement Amplitude ◽  
Manual Pointing ◽  
Pointing Task ◽  
Pointing Accuracy

Choice reaction time and movement time were measured in a discrete visuo-manual pointing task. Two movement amplitudes (7.5 cm and 30 cm) and two target widths (1.5 cm and 6 cm) were used in all possible combinations. Movement time varied according to movement amplitude and to target width. However, some departure from the linear relationship between movement difficulty and movement time, known as the Fins' law, was observed. Choice RT varied according to movement amplitude, whereas target width influenced choice RT for short-amplitude movements but not for long-amplitude movements. It is concluded that the previously reported relationship between movement difficulty and choice RT primarily results from variations in movement amplitude.

scholarly journals Influence of Chronic Stroke on Functional Arm Reaching: Quantifying Deficits in the Ipsilesional Upper Extremity

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Savitha Subramaniam ◽  
Rini Varghese ◽  
Tanvi Bhatt
Keyword(s):  
Reaction Time ◽  
Upper Extremity ◽  
Movement Time ◽  
Chronic Stroke ◽  
Community Dwelling ◽  
Stroke Survivors ◽  
Initiation Time ◽  
Peak Acceleration ◽  
Movement Initiation ◽  
And Performance

Purpose. The purpose of this study was to quantify ipsilesional upper extremity (UE) stand-reaching performance (kinematics and kinetics) among chronic stroke survivors.Method. Community-dwelling chronic stroke survivors (n=13) and age-similar healthy adults (n=13) performed flexion- and abduction-reaching tasks. Surface EMG and acceleration were sampled using wireless sensors from the prime movers (anterior and middle deltoid) and provided performance-outcome (reaction time, burst duration, movement time, and movement initiation time) and performance-production (peak acceleration) measures and were then evaluated.Results. Individuals with chronic stroke demonstrated significantly reduced performance outcomes (i.e., longer reaction time, burst duration, movement time, and movement initiation time) and performance production ability (i.e., smaller peak acceleration) compared to their healthy counterparts (p< 0.05) for both flexion- and abduction-reaching movements.Conclusion. Our results are suggestive of post-stroke deficits in ipsilesional motor execution during a stand-reaching task. Based on these findings, it is essential to integrate ipsilesional UE training into rehabilitation interventions as this might aid functional reaching activities of daily living and could ultimately help community-dwelling chronic stroke survivors maintain their independent living.

Assessing Midline Crossing Ability in Adults with Spastic Diplegic Cerebral Palsy

2006 ◽  
Vol 23 (4) ◽  
pp. 356-369
Author(s):  
Colleen A. Lewis ◽  
Paul R. Surburg
Keyword(s):  
Cerebral Palsy ◽  
Reaction Time ◽  
Lower Extremity ◽  
Choice Reaction Time ◽  
Movement Time ◽  
Standing Position ◽  
Subsequent Treatment ◽  
Midline Crossing

The purpose of this study was to determine if adults with spastic diplegic cerebral palsy (CP) display midline crossing inhibition (MCI) in the lower extremity as measured by choice reaction time (CRT) and movement time (MT) as compared to participants without disabilities. Midline crossing ability was assessed in the standing position using a protocol developed by Eason and Surburg (1993). Both groups were significantly slower in the contralateral direction as compared to the ipsilateral and midline direction as measured by CRT. Results revealed that adults with CP were significantly slower in CRT and MT tasks as compared to participants without disabilities. Assessment of midline crossing ability may provide useful information related to assessment and subsequent treatment as individuals with CP age.

scholarly journals Flèche versus Lunge as the Optimal Footwork Technique in Fencing

2019 ◽  
Vol 16 (13) ◽  
pp. 2315 ◽  
Author(s):  
Zbigniew Borysiuk ◽  
Natalia Markowska ◽  
Mariusz Konieczny ◽  
Krzysztof Kręcisz ◽  
Monika Błaszczyszyn ◽  
...  
Keyword(s):  
Reaction Time ◽  
Movement Time ◽  
Medial Gastrocnemius ◽  
Ground Reaction Forces ◽  
Vertical Force ◽  
Muscular Tension ◽  
Explosive Force ◽  
Reaction Forces ◽  
Gastrocnemius Muscles ◽  
Sensorimotor Responses

The objective of the study reported in this paper involved identifying the fencing attack (flèche versus lunge) that provides greater effectiveness in a real competition. Two hypotheses are presented in the study. The first hypothesis involves the greater effectiveness of the flèche with regard to bioelectric muscular tension, and the second hypothesis involves the reduction of movement time of the flèche. Therefore, analyses were conducted by the application of EMG (electromyography) signal, ground reaction forces, and parameters representing sensorimotor responses (RT—reaction time and MT—movement time). This study included six world-leading female épée fencers (mean age: 24.6 ± 6.2 years). Throughout the procedure, the subjects performed flèche and lunge touches at the command of the coach based on visual stimuli. The experimental results indicated the greater effectiveness of the flèche compared with the lunge with regard to increases in EMG values (p = 0.027) in the lateral and medial gastrocnemius muscles and decreases in the duration of the movement phase (p = 0.049) and vertical force of the rear leg (p = 0.028). In conclusion, higher levels of EMG and ground reaction forces were generated during the flèche compared with the lunge, which promotes an improvement in the explosive force and contributes to a reduction in the movement phase of the entire offensive action.

Sign in / Sign up

Export Citation Format

Share Document