Search Results

You are looking at 101 - 110 of 1,798 items for :

Clear All
Restricted access

Scott J. Strath, Ann M. Swartz, Sarah J. Parker, Nora E. Miller, Elizabeth K. Grimm and Susan E. Cashin

Background:

Increasing physical activity (PA) levels in older adults represents an important public health challenge. The purpose of this study was to evaluate the feasibility of combining individualized motivational messaging with pedometer walking step targets to increase PA in previously inactive and insufficiently active older adults.

Methods:

In this 12-week intervention study older adults were randomized to 1 of 4 study arms: Group 1—control; Group 2—pedometer 10,000 step goal; Group 3—pedometer step goal plus individualized motivational feedback; or Group 4—everything in Group 3 augmented with biweekly telephone feedback.

Results:

81 participants were randomized into the study, 61 participants completed the study with an average age of 63.8 ± 6.0 years. Group 1 did not differ in accumulated steps/day following the 12-week intervention compared with participants in Group 2. Participants in Groups 3 and 4 took on average 2159 (P < .001) and 2488 (P < .001) more steps/day, respectively, than those in Group 1 after the 12-week intervention.

Conclusion:

In this 12-week pilot randomized control trial, a pedometer feedback intervention partnered with individually matched motivational messaging was an effective intervention strategy to significantly increase PA behavior in previously inactive and insufficiently active older adults.

Restricted access

David Sherwood, Keith Lohse and Alice Healy

Many research studies have shown the advantage of directing the focus of attention (FOA) externally as opposed to internally. However, it is not clear how the availability of concurrent visual feedback might impact attentional processes as the FOA is shifted between internal, external, relevant, and irrelevant sources of attention. The current experiment varied the FOA by asking the participants to judge joint angles (internal-relevant), respiration (internal-irrelevant), dart release angle (external-relevant), and tone loudness (external-irrelevant) at dart release in which task-intrinsic concurrent visual feedback was available or not. Spatial errors and trial-to-trial variability in the outcome were reduced when vision was available. Spatial errors were greater during internal judgments compared with external judgments particularly when vision was not available and when making judgments about task-relevant factors. A focus on irrelevant factors generally did not affect performance compared with relevant factors. These findings suggest that availability of concurrent visual feedback modulates focus of attention effects in motor control.

Restricted access

Tom Sharpe, Hosung So, Hasan Mavi and Seth Brown

Based on sequential behavior analysis (SBA) approaches to clinical practice activities (Sharpe, Lounsbery, & Bahls, 1997) and on results from school-university collaboration approaches to teacher education (Sharpe, Lounsbery, Golden, & Deibler, 1999), this study analyzed the effects of different supervisory personnel and practice-teaching settings on the relative effectiveness of SBA feedback and goal-setting practices. Teaching performances of two matched groups of undergraduates (N = 4) were observed. An A-B-A-C multiple baseline design with a treatment reversal across participants was used. The B-phase consisted of school-based practice teaching, the C-phase consisted of peer-based practice teaching, and the multiple baseline represented the differing times in which the same SBA feedback treatment was administered. Results demonstrated substantial improvement in select teacher and student practices in the school-based setting but a limited effect in the peer-based setting. Participant response data provided additional support for school-based activities. This study endorses a collaborative field-based approach to teacher education and contradicts the literature in nonsupport.

Restricted access

Barbara B. Brown and Carol M. Werner

Background:

Accelerometer output feedback might enable assessment of recall biases for moderate bouts by obese and nonobese individuals; accelerometry might also help residents recall destinations for moderate-intensity walking bouts.

Methods:

Adult residents’ 1-week accelerometer-measured physical activity and obesity status were measured before and after a new rail stop opened (n = 51 Time 1; n = 47 Time 2). Participants recalled the week’s walking bouts, described them as brisk (moderate) or not, and reported a rail stop destination or not.

Results:

At the end of the week, we provided accelerometry output to residents as a prompt. Recall of activity intensity was accurate for about 60% of bouts. Nonobese participants had more moderate bouts and more “stealth exercise” —moderate bouts recalled as not brisk—than did obese individuals. Obese participants had more overestimates—recalling light bouts as brisk walks—than did nonobese individuals. Compared with unprompted recall, accelerometry-prompted recalls allowed residents to describe where significantly more moderate bouts of activity occurred.

Conclusion:

Coupling accelerometry feedback with self-report improves research by measuring the duration, intensity, and destination of walking bouts. Recall errors and different patterns of errors by obese and nonobese individuals underscore the importance of validation by accelerometry.

Restricted access

Victor H. Mancini, Elizabeth K. Clark and Deborah A. Wuest

Both the short- and long-term effects of systematic supervisory feedback (SSF) using CAFIAS on the behaviors of a field hockey coach and her team were examined. The investigation was divided into four phases. During Phase I the coach was videotaped five times to provide baseline data. In Phase II the coach was videotaped nine times and was provided with SSF. At the conclusion of the intervention, five practices were videotaped for Phase III. One year later, in Phase IV, the coach was again videotaped for five practices. Descriptive statistics were calculated and comparisons were made between the behaviors exhibited in Phases I and III as well as Phases III and IV. Praise and information increased, and directions and criticism decreased from Phases I and III. These changes were evident 1 year later. This investigation demonstrates that even the behaviors of an experienced coach can be altered using SSF and that these changes can be sustained over time.

Restricted access

B. Ann Boyce

This field-based study investigated the effect of an instructional strategy with two schedules of augmented knowledge-of-performance (KP) feedback on skill acquisition of a selected shooting task. Students enrolled in university rifle classes (N=135) were randomly assigned to one of three conditions: (a) instructional strategy (IS) with KP feedback after every trial, (b) IS with summary KP feedback, and (c) no IS with no KP feedback. Data collection consisted of (a) a pretest phase (one set of five trials) and (b) an acquisition phase (four sets of five trials). Instructional integrity was maintained during data collection so that students were treated as class participants. The findings indicated that (a) the presence of the instructional strategy in conjunction with the two feedback schedules appeared to positively effect the overall shooting performance as compared to no strategy/no KP, (b) the effects of the two KP schedules did not statistically differ from one another, and (c) the significant effect for trials indicated that as shooting practice progressed subjects in all three conditions appeared to improve.

Restricted access

Tracy L. Pellett and Joyce M. Harrison

This study examined low- and high-skilled students’ (N = 68) immediate practice success in response to a teacher’s specific, congruent, and corrective feedback for different tasks (extension, refinement, and application). Data were gathered from an introductory 11-day volleyball unit taught to female seventh and eighth graders (two intact classes) by a physical education specialist. Practice success immediately after teacher feedback was characterized by significant improvement in performance by both ability groups for extension, refinement, and application tasks for the pass and refinement and application tasks for the set.

Restricted access

Lawrence E. M. Grierson, Claudia Gonzalez and Digby Elliott

This study was designed to examine the importance of vision to corrective processes associated with a mechanical perturbation to the limb during goal-directed aiming. With a hand held stylus, under vision and no vision conditions, performers reached to a target represented by the intersection of perpendicular lines. The stylus was connected to an air compressor and engineered such that 80 ms following movement initiation reaches were perturbed by a short air burst either in the direction of, or opposite to, the movement. Spatial position analysis of the limb at early kinematic landmarks revealed that the single direction bursts were successful in advancing and hindering the movement progress. Furthermore, within subject trial-to-trial variability analysis indicated that performers adopted different control strategies for dealing with the perturbations depending on the availability of vision. The present findings suggest that a continuous form of online control is exercised during the early portions of the aiming trajectories. This form of control may be mediated by visual or proprioceptive information.

Restricted access

Michael B. Martin and Mark H. Anshel

Two experiments were conducted to examine the effect of self-monitoring (SM) strategies on motor performance of varied difficulty. In a pilot test, participants’ perceptions of task difficulty agreed with performance on the easy task. Participants perceived the hard task to be significantly more difficult than indicated by the performance scores and perceived the easy task to be significantly less difficult than their performance on the complex task (p < .05). In the subsequent experiment, subjects performed 90 trials on either the difficult or easy motor task using either positive self-monitoring (PSM), negative self-monitoring (NSM), or no self-monitoring. MANOVAs indicated that PSM resulted in superior performance in comparison to NSM across trials while performing the difficult task (p < .05). In the easy task, PSM was inferior to NSM on motor performance across trials (p < .01). Further results also indicated that negative affect significantly decreased for PSM performing the difficult task, and for NSM performing the easy task.

Restricted access

David Kahan

This case study of a student teacher (ST) and her cooperating teacher (CT) employed an AB1B2A reversal design over an entire high-school-level student teaching practicum to determine the effect of a two-way, bug-in-the-ear radio device on dyadic intralesson communication characteristics, participant role satisfaction with the device, and attitude toward using the device and additional equipment. Likert-scale, postlesson questionnaires measured participant satisfaction with their roles, the communication, and equipment. An exit interview was conducted to obtain explanations for data trends. Intralesson communication was characterized by its short duration (M = 15.8 s) and low rate (M = 0.25 communications/min). It was predominantly CT-initiated, management oriented, neutral, and specific. And it was balanced between descriptive, prescriptive, and interrogative comments. Analysis of exit interviews revealed three themes to explain characteristics of and responses to communication, and the devices used to elicit it: CT/ST interpersonal and professional compatibility, role clarity, and commitment to perceived role function. The radio device/intervention did not differentiate communication characteristics from baseline or reversal phases; however, participants identified it as a discrete and immediate communication tool that promoted ST “with-it-ness” and autonomy.