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Purpose To investigate the effects of four office chairs on the postural angles of the lumbopelvic and cervical regions. Research question Which chair(s) produce an ''ideal'' spinal posture? Methods An experimental same subject design was used involving healthy subjects (n = 14) who conducted a typing task whilst sitting on four different office chairs; two ''dynamic'' chairs (Vari-Kneeler and Swopper), and two static chairs (Saddle and Standard Office with back removed). Data collection was via digital photogrammetry, measuring pelvic and lumbar angles, neck angle and head tilt which were then analysed within MatLab. A repeated measures ANOVA with Bonferroni corrections for multiple comparisons was conducted. Results Statistically significant differences were identified for posterior pelvic tilt and lumbar lordosis between the Vari-Kneeler and Swopper chairs (p = 0.006, p = 0.001) and the Vari-Kneeler and Standard Office chairs (p = 0.000, 0.000); and also for neck angle and head tilt between the Vari-Kneeler and Swopper chairs (p = 0.000, p = 0.000), the Vari-Kneeler and Saddle chairs (p = 0.002, p = 0.001), the Standard Office and Swopper chairs (p = 0.000, p = 0.000), and the Standard Office and Saddle chairs (p = 0.005, p = 0.001). This study confirms a within region association between posterior pelvic tilt and lumbar lordosis, and between neck angle and head tilt. It was noted that an ideal lumbopelvic position does not always result in a corresponding ideal cervical position resulting in a spinal alignment mismatch. Conclusion In this study, the most appropriate posture for the lumbopelvic region was produced by the Saddle chair and for the cervical region by both the Saddle and Swopper chairs. No chair consistently produced an ideal posture across all regions, although the Saddle chair created the best posture of those chairs studied. Chair selection should be based on individual need.

This article examines young people's civic participation and the extent to which this is influenced by the family. Although literature on young people's civic participation is abundant, the role of the family in influencing this participation is largely absent. Drawing on survey data collected from 976 young people aged 13-14 in South Wales, we outline the extent and nature of civic participation and how this varies according to relationships with parents and grandparents. Our data show that relationships with mothers and grandparents are particularly important in young people's accounts of their participation, suggesting that family is far more important in developing a propensity for engagement in civil society than is commonly understood.

The study of marginalia has not been widely discussed in social sciences research and occupies a marginal space in terms of methodological legitimacy. We highlight the value of paying attention to the ways in which participants speak back to the researcher. This paper draws on marginalia found in surveys written or drawn by young people in classrooms across South Wales, demonstrating how various notes and marks made spontaneously by participants can tell us something important and worthwhile about how young people engage with research. We position marginalia as a manifestation of complex power dynamics in the research process that illuminate participants' negotiation of complex and multiple subjectivities in the literal margins and between the lines of the survey pages. Whilst the sensitive and rigorous analysis of marginalia is fraught with ethical and methodological challenges, we argue that paying closer attention to marginalia presents an opportunity for deeper engagement with participants when undertaking survey research.