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Purpose: When healthy children/adolescents are potential stem cell donors to a sibling, ethical questions arise due to reduced autonomy and dependency on their family. This study aimed to explore the experiences of children/ adolescents in Sweden who donated stem cells to a severely ill sibling. Method: Semi-structured interviews were conducted with thirteen donors, aged 6-17 years at the time of the donation, all with surviving siblings. The interviews were transcribed verbatim and analysed using qualitative content analysis. Result: The main category in this study was The presumed 'choice' when a sibling is ill. The experience included being Proud without an actual choice, highlights that the donors were proud to contribute, and perceptions of a request without a choice. Focusing on the ill sibling and the outcomes reveals that they were worried and protected the sibling, and downplayed the importance of their own effort. They experienced a Need of support and information, which derived from receiving information without communication about what they really needed to know, but also the importance of support through play and talk. Conclusion: The donation involves the young donor in the care, implying an opportunity to bring the family back together. They have no real choice, when their sibling is ill and the lack of information about possible alternatives indicate that there was no option to decline. There is also a need to focus on the experiences of young donors whose siblings died after the transplantation.

Understanding differences in locomotor and collision characteristics between phases of play can help rugby league coaches develop training prescription. There are no data currently available describing these differences at the elite international level. The aim of our study was to determine the differences in average speed (m∙min−1), high-speed running (>5.5 m∙s−1) per minute and collision frequencies per minute (n∙min−1) between attack and defence during the 2017 Rugby League World Cup (RLWC). Methods: Microtechnology data were collected from 24 male professional rugby league players from the same international squad across six matches of the RLWC. Data were then subject to exclusion criteria and stratified into forwards (n = 9) and backs (n = 7) before being analysed with linear mixed-effects models. Results: When comparing attack with defence, forwards and backs had substantially slower average speeds (effect size [ES]; ±90% confidence limits: −2.31; ±0.31 and −1.17; ±0.25) and substantially greater high-speed distance per minute (1.61; ±0.59 and 4.41; ±1.19). Forwards completed substantially more collisions per minute when defending (2.75; ±0.32) whilst backs completed substantially more when attacking (0.63; ±0.70). There was greater within- and between-player variability for collision frequency (coefficient of variation [CV] range; 25–28%) and high-speed distance (18–33%) per minute when compared to average speed (6–12%). Conclusions: There are distinct differences in locomotor and collision characteristics when attacking and defending during international rugby league match-play, yet the variability of high-speed running and collisions per minute is large. These data may be useful to plan or evaluate training practices.