The second in a two-part series, this infographic explains effect size, significance, and practical application through confidence intervals.

Musculoskeletal injuries are the primary source of disability in the United States military. With the integration of movement screens and the implementation of tactical strength and conditioning facilitators there can be success in reducing the amount of musculoskeletal injuries in the tactical populations.

Occupational police tests described in the literature can serve as indicators of the occupational performance of their employees. In addition, practitioners in charge of police training should develop and employ obstacle courses composed of critical work tasks, as they may be strongly related to tests of aerobic endurance, strength, muscular endurance, and agility.

The purpose of this meta-analysis was to synthesize the literature and provide a robust estimate of the correlations between lower-body, multijoint, isometric and dynamic neuromuscular assessment variables and snatch (SN) and clean and jerk (C&J) performance in competitive weightlifters. A comprehensive search through 3 electronic databases (PubMed, SPORTDiscus, and Web of Science) returned 12 studies that met the inclusion criteria. Meta-analyses were performed on Pearson’s correlations between SN and C&J performance and 15 variables from 5 neuromuscular assessments— countermovement jump (CMJ), squat jump (SJ), isometric midthigh pull (IMTP), back squat (BS), and front squat (FS) one repetition maximum (1RM). The FS and BS 1RM exhibited nearly perfect correlations (r 5 0.93 to 0.94), whereas the IMTP peak force exhibited very large correlations (r 5 0.83 to 0.85). The IMTP force at 250 ms exhibited very large correlations (r 5 0.77 to 0.78), and the CMJ and SJ peak power exhibited very large to nearly perfect correlations (r 5 0.88 to 0.92). These findings illustrate the importance of lower-body maximal and time-limited force-producing capabilities in weightlifters. Moreover, each assessment offers at least one variable that exhibits a correlation of .0.70. Therefore, these assessments may be used to gauge weightlifting performance potential.

Program Design & Implementation for Large Group Training

Program Design & Implementation for Large Group Training

Carmen Colomer, Director of Sport Science for the Philadelphia 76ers National Basketball Association (NBA) team, talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about translating numbers into actions. Topics under discussion include periodizing athlete’s recovery in the NBA and how learning to code can help with data analysis and application. Find Carmen on Twitter: @CarmenColomer1 | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Multidirectional ground reaction forces (GRFs) and jump tests within baseball pitchers provide insight into athletic ability and coordination to produce lower-body force and power. Lower-body power is a biomechanical feature that denotes physiological capacity through dynamic and passive tissue stretch-shortening in transferring energy from the ground through the kinetic chain. Optimized lower-body power may lessen the magnitude of forces on the upper extremity. Insufficient lower-body power may create a greater risk of upper-body injury. Lower-body power and its relationship to ball velocity have been minimally investigated, yet some research points to a correlation between jumping ability and fastball velocity. Because pitching is unilateral, practitioners should consider unilateral jumps to determine the extent of bilateral asymmetry or stride to drive leg differences that can guide training to remediate deficiencies. The purposes of this brief review are to (a) examine factors that influence vertical jump performance among baseball players, (b) examine research on pitching multidirectional GRFs, and (c) examine literature concerning jump performances to baseball pitching performance. Collectively, this review can assist coaches and practitioners in lower-body power testing and training for baseball pitchers.

Planning and designing training programs for a new group of athletes (e.g., a new recruiting class or a new coaching job) can be problematic without a base level understanding of the athletes’ current skill levels. This article describes one system that can be used to determine an athlete's self-confidence on different exercises.