Water polo is a team sport that has been suffering rule changes aiming for a more attractive game. Our goal was to unveil whether different offensive playing styles or methods were adopted by elite national teams from Eastern Europe and from other world countries after the new rules framework was applied at the 2019 FINA World Championship. Additionally, we questioned whether those rules induced a more dynamic game. A total of 648 offensive sequences from games contested by the top-six ranked national squads were analysed. Descriptive statistics, parametric and nonparametric tests were computed, and the effect size was used. The eastern Europeans were the tallest (t (76) = −4.081; p < 0.001, d = 0.42) and the Hungarians were higher than Italians (p = 0.005, d_z = −0.41). Offensive time length differed between teams (H (5) = 30.50, p < 0.001) with Serbia being the fastest (Mdn = 22 s). In successful attacks without extra time, Italy was quicker than Spain (17.5 vs. 25.0 s; p = 0.031, d_z = −0.36) scoring 30% of their total goals under 20 s, while Australia up to 24% and Croatia, Hungary and Spain ≤ 16.0%. When power-play occurred, the teams’ pass action was different (H (5) = 15.99, p < 0.007), with Italy performing more passes than counterparts, especially Serbia (Mdn = 13 vs. 9, respectively; p= 0.003, d_z = 0.20) and with the exception of Hungary. Through fast play sequences, Italy, Serbia and Australia scored up to 33% of their goals, while Spain, Croatia, and Hungary scored ≤ 15%. The power-play contributed to ≥50% of teams’ goals, except for Spain and Australia (48 and 45%, respectively). Playing styles commonly attributed to Eastern vs. non-Eastern Europeans and other worldwide national teams such as Australia were not confirmed. However, offensive trends were perceived and described for the first time, and some base guidelines were suggested to distinguish the static or positional vs. a more dynamic playing model. Rule changes did not seem to induce the expected effects on game dynamics.

Accelerometer-based wearables offer a cost-effective solution for managing match and training loads in invasion team sports. However, a multitude of acceleration-derived metrics, each employing different algorithms, has led to inconsistent and incomparable outcomes across studies and devices. This article reviews the mathematical procedures underlying whole-body mechanical load metrics, clarifies their conceptual differences, and proposes refinements to enhance standardization. Synthetic data were employed to investigate conceptual differences, while experimental accelerometric data (463 time series) from a set of elite handball training sessions (involving 16 players) were used to implement the corrected equations and analyze statistical relationships. Analysis of synthetic data revealed that derivative-based metrics, such as Jerk Modulus (typically referred to as Player Load) and corrected Accel’Rate (cAccel’Rate), tend to amplify noise compared to acceleration-based metrics, such as universal Dynamic Stress Load (uDSL) and Body Load. Experimental results indicated that when metrics were summed, their values were nearly identical. In time-series comparisons, Jerk Modulus and cAccel’Rate were predictably found to be nearly identical, while Body Load was the most distinct. Acceleration-based metrics are preferable to derivative-based ones. Sports scientists should lead the design and validation of such metrics, ensuring methodological rigor, transparency, and innovation while preventing commercial interests from introducing rebranded variables with undisclosed scaling factors and unclear calculations.

Following the UNESCO guidelines for Quality Physical Education, this participatory action research study aimed to explore the potential of a Community of Practice (CoP) to empower both schoolteacher educators and preservice teachers (PSTs) to become practitioners–researchers in order to achieve inclusive practices in Physical Education (PE). This study involved a partnership between a university in North Portugal and four cooperating schools. CoP participants were six teacher educators and four cooperating teachers (CTs) who work with twelve PSTs in the schools where they developed their teaching practices. Data collection included focus groups with CoP members and PSTs, CoP meetings, and school placement meetings. A thematic inductive–deductive analysis revealed that CTs were actively engaged in the CoP, achieving mutual involvement and a shared repertoire, and making friendships beyond the CoP. Becoming practitioners–researchers made CTs more critical of their teaching and supervisory roles. Supporting PSTs to be practitioners–researchers was challenging, mostly due to PSTs’ lack of content knowledge, which made it difficult to identify the students’ problems in engaging with the proposed activities and how to solve them. Both CTs and PSTs highlighted the value of the CoP in gaining confidence and knowledge to improve their teaching to become more inclusive.

This paper addresses the challenge of assessing relatedness and functional interdependence through connecting passes within invasion games, which may offer valuable pedagogical insights into gameplay for accessibility and inclusiveness. Hence, the purpose of this paper is twofold. Firstly, it presents preliminary work on the methodology for computing open passing lanes and derived metrics, integrating spatiotemporal data analysis with event data. Secondly, using a within-subject design, it investigates how modified handball games influence game play opportunities. Data were collected during handball matches in a pre-teens Physical Education (PE) class with mixed-skill-level teams. Game actions (e.g., passes, receptions, and shots) were manually recorded through systematic observation of video footage, while players’ positional data were captured with ultra-wideband technology. Findings provide evidence that employing a numerical advantage (one player up) enhances overall opportunities for individual attacking actions (i.e., more passing, catching actions, and goal-scoring opportunities) and relational actions (i.e., more open passing lanes) compared to equal numbers. Conversely, equal numbers with individual marking appeared more challenging, as fewer secure passing lanes were observed, and the ball possessor spent more time with the ball before releasing it. The developed approach holds promise for studying designed games to enhance inclusion and learning opportunities for all.

The objective assessment of external physical loads has become promising in better understanding players’ match loads and responses. However, there is a lack of consensus on the metrics used along with limited information on this topic in elite handball. This study investigated differences in conventional and novel external load metrics according to playing positions. Methods: 27 matches of EHF Euro M20 2022 were used, with a total of 711 player match observations recorded. The data series were collected using a local positioning system (LPS) integrated with inertial measurement unit (IMU) devices. Kinematic variables: match-jerk, match-Dynamic Stress Load (match-DSL), distance covered, distance covered at high speed (HSR distance). Despite the lack of handball-specific validation, differences between studied positions were found in all variables. Greater sensibility seems possible based on the match-DSL compared to match-jerk. Accordingly, Backs exhibited the highest match-DSL values. Divergently, the Wings covered more distance at total and high-speed running while showing lower match-DSL relative to the Backs. The Line Players had similar HSR distances to Backs while covering lower total distances. Future studies are needed to explore the validity of the available metrics and arbitrary parameters, as well as comparing those variables with internal-load variables.