ERIC Number: ED217032
Record Type: RIE
Publication Date: 1982-Mar
Reference Count: 0
The Effects of Increasing Mass on the Variability of Movement & Segmental Movement Times.
Byrne, Connell M. J.; And Others
The effects of increasing the load of materials to be moved on rapid movement of these materials were measured using two dependent variables. The first analysis involved overall mean movement time (MT) and segmental movement times. The second analysis dealt with movement time variability evidenced by within subject MT and segmental MT standard deviations. The subjects, six male and six female undergraduate students, completed 60 trials with a linear slide apparatus using six load conditions: zero, two, four, six, eight, and ten kilograms. The measurement interval was 48 centimeters. For both movement time and movement time variability, significant main effects by sex were found. The results indicated that, when movement time increased, the resultant variability of movement time remained constant. Findings were at odds with other research in the area, leading to speculation that an explanation may be obtained from a biomechanical approach. It is concluded that increases in MT, but not necessarily in segmental MT standard deviations, can be expected for submaximal force movements. (FG)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the American Alliance for Health, Physical Education, Recreation and Dance (Houston, TX, April, 1982). Best copy available.