Eva D'HOndt

Young people worldwide are affected by two main health-related issues: physical inactivity and drowning accidents. Encouraging participation in aquatic physical activities in a safe way could address this dual concern. Aligning theoretical frameworks of physical literacy and water competencies could empower young people with key skills to engage safely and sustainably in aquatic environments. The aim of this theoretical paper is to provide a philosophical, ontological, and epistemological rationale for merging these two frameworks into a new concept: aquatic literacy. The multidimensional concept is presented and describes the intertwined physical, psychosocial, and cognitive domains, which provide a means to empower young people to safely enjoy aquatic opportunities and achieve individual health benefits. This new concept needs supportive empirical data, such as the level of individuals in each domain of aquatic literacy, to be a strong framework for guiding aquatic educators and stakeholders to better engage and protect people worldwide.

Motor competence (MC) development from an early age is crucial for fostering healthy developmental trajectories. However, recent evidence suggests a secular decline in MC from age three onward, whereas the status of MC in children under 3 years is scarcely documented. This pilot study assessed MC of Flemish toddlers relative to the benchmarks of the Peabody Developmental Motor Scales-Second Edition and evaluated the effectiveness of a 20-week intervention targeting locomotion, stationary skills, and object manipulation. A nonrandomized controlled trial was conducted in 12 Flemish daycare centers, with 104 toddlers (intervention: n = 54, control: n = 50; mean age = 19.9 ± 3.0 months). At baseline, results showed a significant leftward shift in MC profiles ( p < .001, Cramér’s V = .236) with fewer toddlers classified as above average or superior compared with the Peabody Developmental Motor Scales-Second Edition reference values. Regardless of toddlers’ sex, the intervention significantly improved locomotion ( p = .025; ) and stationary skills ( p = .007; ) but not object manipulation. Given the high daycare attendance rate in Flanders (>70%), these settings offer a valuable opportunity to foster MC development. However, interventions must be feasible, sustainable, and aligned with daycare practices to ensure long-term impact.

The Pictorial Scale of Perceived Water Competence is a tool used to measure self-perception of water competence in children aged from 5 to 8. The aim of this study was to translate the tool into Portuguese and to evaluate the face validity in 120 children ages from 5 to 8 years from Portugal. Individual interviews were conducted with children to assess familiarity with the 17 Pictorial Scale of Perceived Water Competence aquatic skills and their ability to sequence the scale correctly and logically. Familiarity with aquatic skills (88.2%) and ability to sequence (95.0%) and to logically explain the sequence (97.0%) were high. Nevertheless, these scores were lower ( p < .05) in the children aged 5. In addition, a dependency relationship between children’s familiarity, sequencing, and comprehension of skills with previous aquatic experience was observed when controlled by age—in favor of more experienced children ( p < .05). The Portuguese version of the Pictorial Scale of Perceived Water Competence is well adapted tool for children aged 5–8 years with aquatic experiences and shows very-high level of skill familiarity and good ability to sequence and justify skill progression. However, younger children and those with no previous aquatic experience may have less familiarity and understanding of aquatic skills.

Background: The presence of inter-limb asymmetry in the human body has traditionally been perceived to be detrimental for athletic performance. However, a systematic review addressing and comprehensively assessing the association of asymmetry between the lower limbs and middle- and long-distance running performance-related metrics is currently lacking. Objective: The main purpose of this systematic review was to examine the relationship between lower inter-limb asymmetry and determinants of running performance in healthy middle- and long-distance runners. The secondary objective was to identify possible avenues for further research in this area. Methods: PubMed, Web of Science and SPORTDiscus were systematically searched for studies investigating the relationship between lower inter-limb asymmetry and (determinants of) running performance in healthy and injury-free middle- and long-distance runners. The quality of studies eligible for inclusion was assessed using the Downs and Black Quality Index Tool. Results: Out of 4817 articles screened, 8 studies were included in this review which assessed the association between functional, morphological, kinematic and kinetic asymmetry and running performance-related metrics. The quality score of the included research varied between 5/10 and 9/10. Our results revealed mixed findings, showing both significant negative (n = 16) and positive (n = 1) associations as well as no significant associations (n = 30) between inter-limb asymmetry and running performance-related metrics. Conclusions: A high heterogeneity across study methods and outcomes was apparent, making it difficult to draw a straightforward conclusion. Our results indicate that the majority of metrics of functional, morphological, kinematic and kinetic inter-limb asymmetry are negatively or not associated with running performance (and/or its determinants). Thus, a more extensive high-quality body of research using standardised asymmetry magnitude metrics is essential to determine whether, and to what extent asymmetry between the lower limbs could affect middle- and long-distance running performance. Future studies should establish potential trade-off values to help practitioners develop evidence-based training programs. Key Points: In the majority of the metrics, the magnitude of lower inter-limb asymmetry was negatively or not associated with middle- and long-distance running performance. Coaches, athletes and researchers should be attentive of the task, time- and metric-specificity as well as the inter- and intra- individual variability of magnitude outcomes, when assessing inter-limb asymmetries.

In its recent development, the Pictorial Scale of Perceived Water Competence (PSPWC) showed good face and construct validity. However, additional reliability and validity research is needed, including test-retest reliability and a demonstration of the relationship between PSPWEC test scores and actual water competence. Toward that aim, we administered the PSPWC to 124 children, aged 5–8 years. We repeated this test administration after one week for a subset of 55 children to determine its test-retest reliability, and the remaining 69 children also performed the fully aligned Actual Aquatic Skills Test (AAST) in an indoor swimming pool to provide data for our investigation of the relationship between PSPWC scores and actual water competence. We found good test-retest reliability, both at the global level (ICC = 0.81, n = 55) and at the level of individual skills (Weighted kappa coefficients from 0.58 to 0.90), with no significant differences between these two test scores. We also found a moderate positive relationship between PSPWC and AAST total scores ( r = .64, n = 69), with no significant difference between total scores of actual and perceived water competencies. Children overestimated their competence in three specific skills: the back star, swimming on the front, and diving in deep water. While these results underline specific situations in which children’s higher self-perceptions of their water competence are a risk factor for their water safety, these data confirm that the PSPWC is reliable for measuring children’s perceived competencies in aquatic education and drowning prevention, and there is further support for its validity through a moderate correlation with actual water competencies.

The Pictorial Scale of Perceived Water Competence (PSPWC) has been recently de-veloped and the first psychometric studies confirmed good face and construct validi-ty. Additional research is needed for the ongoing validation, including test-retest reliability and the relationship with actual water competence. For that aim the PSPWC was administered to 124 children, aged from 5 to 8 years. A subtotal of 55 children repeated the PSPWC procedure one week later for test-retest reliability, while the other 69 children performed the fully aligned Actual Aquatic Skills Test (AAST) in an indoor swimming pool in order to investigate the relationship with actual water competence. The results revealed good test-retest reliability, both at the global level (ICC = 0.81, n = 55) and at individual skill level (Weighted kappa coef-ficients from 0.58 to 0.90 ), without any significant difference between the two test occasions. The relationship between PSPWC and AAST total scores was moder-ate (r = 64, n = 69) and there was no significant difference between total scores of actual and perceived water competencies. However, children overestimated their competence in three specific skills: the back star, swimming on the front and diving in deep water. These results underline specific situations in which a higher self-perception of one’s actual water competence level is a risk factor which could have consequences on children’s water safety. These results confirm that the PSPWC is reliable and opens new research perspectives for aquatic education and drowning prevention.

Background: Evidence on the factors influencing physical activity (PA) and sedentary behavior (SB) in middle-aged and older adults taking care of their grandchild(ren) is limited, even though this knowledge seems imperative when considering the unique relationship between grandparents and their grandchild(ren) as well as the rising popularity of intergenerational interventions targeting these energy-expenditure related behaviors. Therefore, this explorative qualitative study aimed to identify the determinants of PA and SB levels among Flemish caregiving grandparents in the presence of their grandchild(ren) aged between 0–5 years.Methods: Six online focus group discussions were conducted via Microsoft Teams, all of which were audio- and videotaped with permission granted by the participating grandparents. In total, nine caregiving grandfathers and 28 caregiving grandmothers (overall mean age = 60.9 ± 4.1y) participated in this study. An inductive content analysis approach was used to derive subcategories, categories and themes from the verbatim transcribed data using NVivo R1.Results: Caregiving grandparents’ levels of PA and SB were both influenced by personal determinants (e.g., physical health, grandparental perceptions and responsibilities), interpersonal determinants (e.g., characteristics of the grandchild(ren), such as age-related physical/motor development and family interaction), and environmental determinants (e.g., weather and seasonal circumstances). PA levels of caregiving grandparents were further affected by additional personal determinants (e.g., age of the grandparent, planning and location) and interpersonal determinants (e.g., characteristics of the grandchild(ren), such as new experiences of the grandchild(ren)). Additionally, some personal determinants (e.g., perception of educational value) and interpersonal determinants (e.g., characteristics of the grandchild(ren), such as age-related cognitive development and health of the grandchild(ren)) were strictly mentioned to influence caregiving grandparents’ SB.Conclusions: Acknowledging the unique relationship between grandparents and their grandchild(ren), the current study identified specific factors determining grandparents’ PA and SB levels during the provision of grandchild care. Besides, it turned out of importance to take the interplay between the different determinants into account. Especially, for those grandparents with older grandchild(ren), within the studied 0–5 years age range, more attention should be paid to grandchild characteristics as part of the interpersonal determinants when setting up interventions to improve levels of PA and SB in caregiving grandparents.

An international group of experts have developed a pictorial tool to measure perceived water competence for children aged from 5 to 8 years old: the Pictorial Scale of Perceived Water Competence (PSPWC). The aim of the present study was to verify the validity of this tool. In the first part of the study, 120 children were interviewed to investigate face validity of the PSPWC to ensure that all pictorial items were understandable. In the second part of the study, 13 scientific and/or pedagogical international experts were invited to assess the tool’s content validity via an online survey. Face validity results revealed that children were able to understand and sequence correctly the aquatic situations in 92% of the cases. The average Content Validity Index (CVI) of the PSPWC ranged from 0.88 to 0.95, showing acceptable content validity. Feedback from experts and children resulted in a major improvement of the “exit water” situation and minor improvements concerning some other items. Experts confirmed that the PSPWC was globally appropriate for different countries and cultures, except for the situation “water entry by slide” which was not considered usual practice in some countries. The PSPWC opens up to new fields of research; useful both for the prevention of drowning and for the support of children’s aquatic education.

Bio-electrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) are methods to estimate human body composition. This study aimed to compare sex-specific outcomes for estimating segmental and whole-body composition in 83 healthy participants (21.9 ± 1.5 years, 56% men) using Inbody S10 BIA and Norland Elite DXA devices. One-way repeated measures ANOVAs showed significantly lower whole-body fat% and whole-body fat mass values alongside higher whole-body lean mass values resulting from BIA when compared to DXA (both sexes: p < 0.001). In men, whole-body bone mineral content was significantly higher using BIA against DXA (p < 0.001). Regardless of sex, no significant BIA versus DXA difference was found in arm fat mass (men: p = 0.180, women: p = 0.233), whereas significantly lower leg fat mass values were found with BIA versus DXA (both sexes: p < 0.001). Additionally, significantly higher arm lean mass (both sexes: p < 0.001) and leg lean mass (only women: p < 0.001) were found in BIA versus DXA. Moderate to very strong positive associations (p < 0.05) between BIA and DXA outcome measures were found, except for arm fat mass (men: p = 0.904, women: p = 0.130) and leg fat mass (only men: p = 0.845). This study highlights (sex-dependent) differences in corresponding test outcomes between BIA and DXA both at the segmental and whole-body level.

As children’s actual aquatic skills are important for the prevention of drowning as well as their engagement in lifelong aquatic physical activity, researchers and practitioners should be able to assess this vital concept accurately and reliably. Therefore, this study aimed to investigate the inter-rater and intra-rater reliability of the Actual Aquatic Skills Test (AAST), consisting of 17 different test items for the assessment of young children’s motor competence in the water. Six raters received a training and evaluation session on scoring the AAST, after which five of them assessed four test videos (of various children (n = 38) performing the test items) twice, with one to two weeks in between (i.e., test and re-test). Inter-rater and intra-rater reliability were determined per test video and for the different AAST test items across videos using Gwet’s Agreement Coefficient 2 (Gwet’s AC2). The Gwet’s AC2 for inter-rater reliability at the test varied from 0.414 to 1.000, indicating a moderate to perfect agreement between raters. For intra-rater reliability, it ranged from 0.628 to 1.000, demonstrating a good to perfect agreement between test and re-test scoring. In conclusion, the AAST is a promising tool to reliably assess young children’s actual aquatic skills in an indoor swimming pool.