Analysis of jump load during a volleyball season in terms of player role

Effects of Plyometric Jump Training on Physical Fitness in Amateur and Professional Volleyball: A Meta-Analysis

“…This should constitute a future line of inquiry as volleyball performance is characterized by both, vertical and horizontal actions with quick displacements (block movements, defenses, attack after reception, etc.) (Sheppard et al, 2007;García de Alcaraz et al, 2017;Garcia-de-Alcaraz et al, 2020). In addition, measures of the effects of PJT (including upper-body drills) on a range of movements related to volleyball performance, including serve precision and velocity (Behringer et al, 2013;Fernandez-Fernandez et al, 2016), could constitute another pathway for a future studies.…”

“…Volleyball is a team sport characterized by intermittent efforts with periods of short duration (i.e., 3-9 s), highintensity activities, interspersed with relatively long periods (i.e., 10-20 s) of recovery (Polglaze and Dawson, 1992). Earlier studies analyzing competition performance have shown that accelerations, decelerations, jumping, ball-striking, and multidirectional locomotions are common movements in volleyball (Sheppard et al, 2007;García de Alcaraz et al, 2017;Garcia-de-Alcaraz et al, 2020). Indeed, although total sprint distance in volleyball players may be lower compared to other team sports (e.g., soccer) (Stolen et al, 2005), a relatively greater portion (i.e., ∼30%) of total movement distance in volleyball is performed while sprinting, particularly linear sprinting (Polglaze and Dawson, 1992).…”

“…In addition, a quick running approach before the jump is also related to a better jump height (Wagner et al, 2009) and greater linear sprinting speed is specked in professional compared to amateur volleyball players (Smith et al, 1992). Moreover, point-scoring actions (e.g., serve, spike, and block) are jump-based, with a typical squad (n∼12) of volleyball players performing ∼120,000 jumps throughout a season (Garcia- de-Alcaraz et al, 2020). According to the principle of training specificity, volleyball players should systematically engage in jump-based exercise programs.…”

“…Although CMJ is a relevant measure of lower-limbs muscle power for volleyball players, sport-specific jump actions in volleyball have not been considered in the previous metaanalysis. Different types of jumps (e.g., spike jump; CMJ with arms; block displacement plus jump), in addition to other actions such as sprinting (e.g., spike running approach), are crucial during competitive matches (Sheppard et al, 2007;García de Alcaraz et al, 2017;Garcia-de-Alcaraz et al, 2020) and are likely to be a more appropriate reflection on volleyball performance than the generic CMJ. Accordingly, a meta-analysis seeking to examine the effects of PJT on those measures of physical fitness is needed.…”

Innovation Research of the"Internet plus" Volleyball Teaching System in the Context of the Information Age

“…On the other hand, the "Internet plus" is a whole, and its profound significance lies in the integration of in traditional industries through the internet [11]. The internet uses network functions such as openness and equal interaction of traditional industries, to change the production and industrial structure of traditional industries through analysis and integration to enhance the driving force of economic growth, thereby improving efficiency and promoting the rapid growth of the national economy [12].The process is shown in Figure 1:…”