The Influence of Motivational Behaviours and Goal Profiles on Positive Youth Development

Positive Youth Development (PYD) research has started to shift focus onto how different internal factors such as temperament, dispositions, and/or personality characteristics could influence levels of PYD for youth participating is organized sport. The purpose of this study is to examine how different goal profiles, specifically categorized by diverse levels of task and ego orientation, can influence levels of PYD in an organized youth sport setting. One hundred youth sport participants (mean age = 16.8) completed the short form Youth Experiences Survey for Sport (short form YES-S; Sullivan et al., 2013) to measure PYD, as well as the Task and Ego Orientation in Sport Questionnaire (TEOSQ; Duba 1989) to assess each athlete’s goal profile. A TwoStep Cluster Analysis was used to classify each individual’s personal goal profile into 3 statistically different cluster groupings. Results indicated significant interaction between the PYD outcome factor of Initiative vs. Clusters [F(2,95)= 10.86, p < 0.001, p2= 0.19] as well as Goal Setting vs. Clusters [F(2,95)= 3.95, p < 0.05, p2= 0.08]. Post-hoc analyses provided results that suggest that those athletes who are more task oriented have fostered more positive outcomes from sport, therefore having more goal setting skills and initiative.

Effects of Plyometric and Resistance Training on Muscle Strength and Neuromuscular Function in Young Adolescent Soccer Players

This study examined the effect of 8-weeks of resistance (RT) and plyometric (PLYO) training on maximal strength, power and jump performance compared with no added training (CON), in young male soccer players. Forty-one 11-13 year-old soccer players were divided into three groups (RT, PLYO, CON). All participants completed 5 isometric knee extensions at 90° and 5 isokinetic knee extensions at 240°/s pre- and post-training. Peak torque (PT), peak rate of torque development (pRTD), electromechanical-day (EMD), rate of muscle activation (Q30), muscle cross-sectional area (mCSA) and jump performance were examined. Both RT and PLYO resulted in significant (p < 0.05) increases in PT, pRTD and jump performance. RT resulted in significantly greater increases in both isometric and isokinetic PT, while PLYO resulted in significantly greater increases in isometric pRTD and jump performance compared with CON (p < 0.05). Q30 increased to a greater extent in PLYO (20%) compared with RT (5%) and CON (-5%) (p = 0.1). In conclusion, 8-weeks of RT and PLYO resulted in significant improvements in muscle strength and jump performance. RT appears to be more effective at eliciting increases in maximal strength while PLYO appears to enhance explosive strength, mediated by possible increases in the rate of muscle activation.