The influence of golf shaft torque on clubhead kinematics and ball flight

ABSTRACT

The purpose of this study was to investigate the influence of shaft torque (torsional rigidity) on clubhead kinematics and the resulting flight of the ball. Two driver shafts with disparate levels of torque, but otherwise very similar properties, were tested by 40 right-handed golfers representing a range of abilities. Shaft deflection data as well as grip and clubhead kinematics were collected from 14 swings, with each shaft, for each golfer using an optical motion capture system. Ball flight and additional clubhead kinematics were collected using a Doppler radar launch monitor. At impact, the high torque shaft (HT) was associated with increased delivered loft (P = .028) and a more open face (P < .001) relative to the low torque shaft (LT). This resulted in the HT shaft being associated with a ball finishing position that was further right (P = .002). At the individual level, the change in face angle due solely to shaft deformation was significantly higher for the HT shaft for 25/40 participants. Although shaft twist was not directly measured, it was logically deduced using the collected data that these outcomes were the result of the HT being twisted more open relative to the LT shaft at impact.     

Manager communication and workplace trust: Understanding manager and employee perceptions in the e-world

Today's business environment is populated with individuals who are digitally connected to clients, contractors, managers, and employees. Traditionally, the ways and behaviors of managers had developed and thrived within face-to-face work environments, but as computer-mediated technologies continue to change the boundaries of the business community, permit alternative worksites to increase, and the traditional workday to disappear, the role of the manager has changed. This article focuses on the communication behaviors between managers and their employees, and how these behaviors have changed as digital communication methods have become mainstream within organizations today. The variables of interest are manager communication and workplace trust. The intended outcome is to uncover the expectations that have yet to be agreed upon within the manager–employee e-relationship.     

Social-emotional competence trajectories from a school-based child trauma symptom intervention in a disadvantaged community

Childhood exposure to traumatic experiences and subsequent psychological symptoms increase the risk for lifelong behavioral and mental health problems, including depression diagnoses, reduced adaptive coping strategies, substance abuse, and early death, with negative impacts on children's social development and academic achievement. Social-emotional competence (SEC) is a key component of resilience to trauma exposure, and early deficits predict increased problem behaviors include delinquency and substance use. SEC is a protective factor that moderates the relationship between risks associated with trauma and subsequent outcomes. The current study used a longitudinal experimental design (treatment vs. comparison) to examine outcomes from a trauma-informed initiative in a disadvantaged community with high trauma exposure rates for K-8th grade students (n = 245). The intervention focused on bolstering children's social-emotional skills and resilience while reducing trauma symptoms and improving academic performance through multimodal programming. Hierarchical Linear Modeling indicated significant improvements in SEC from the intervention group, in contrast to the comparison group (B = 3.42, t = 3.04, p < .01), with gender effects indicating females see the greatest benefit (B = 3.52, t = 4.27, p < .01). Results indicated the significance of addressing SEC for children in disadvantaged communities, particularly those indicating a trauma history and resulting symptomology, as well as boys, who indicated reduced treatment effects.     

Positive motivational experience over a three-day outdoor adventure trek in Peru

ABSTRACT

This study investigated the motivational and emotional experience of an experienced outdoor activity participant during a three-day guided adventure trek in Colca Canyon, Peru. The research adopted a qualitative autoethnographic approach which provided unique data in the form of diary entries, experiential diagrams, field notes and email content. An established theoretical model (reversal theory) was used to analyse dynamic psychological states and emotions that occurred in relation to changing circumstances during the trek. Overall, the data indicated increased positive motivational experience over the course of the adventure trek. Achieving trekking goals, experiencing scenery, views and the natural environment, and social interaction with other trekkers, guides and local people were key aspects found to positively influence the subjective outdoor leisure experience. The present autoethnographic study provided an in-depth prospective account of the participant’s increasingly pleasant positive experience as the trek advanced.     

Conceptualizations of Female Empowerment and Enjoyment of Sexualized Characters in Reality Television

This study explores how young women's definitions of empowerment relate to their reception of The Girls Next Door, a popular reality show that documents the life and fun times of Hugh Hefner's three sexy, live-in girlfriends. Specifically, we examine whether young women's general attraction to reality television relates to their endorsement of different views of women and empowerment, how these endorsements relate to the women's own sexual permissiveness, and finally how these views relate to perceptions of The Girls Next Door. Results suggest that reality television preferences relate to greater endorsement of sexual empowerment and traditional feminine roles. However, sexual permissiveness is elevated only when sexual empowerment is endorsed, and perceptions of the show appear to be most positive only when sexual permissiveness is elevated.     

Religious Upbringing: a Rejoinder and Responses

In this symposium Michael Hand presents a rejoinder to criticisms of his ‘Religious Upbringing Reconsidered’ (Journal of Philosophy of Education, 36.4) by Jim Mackenzie, Peter Gardner and Charlene Tan. Defending the idea of the logical possibility of non‐indoctrinatory religious upbringing, he attempts to show that none of their various objections is successful. Mackenzie, Gardner and Tan each offer a response.