Jim McKenna

Annual age-grouping and athlete development: a meta-analytical review of relative age effects in sport.

Annual age-grouping is a common organizational strategy in sport. However, such a strategy appears to promote relative age effects (RAEs). RAEs refer both to the immediate participation and long-term attainment constraints in sport, occurring as a result of chronological age and associated physical (e.g. height) differences as well as selection practices in annual age-grouped cohorts. This article represents the first meta-analytical review of RAEs, aimed to collectively determine (i) the overall prevalence and strength of RAEs across and within sports, and (ii) identify moderator variables. A total of 38 studies, spanning 1984–2007, containing 253 independent samples across 14 sports and 16 countries were re-examined and included in a single analysis using odds ratios and random effects procedures for combining study estimates. Overall results identified consistent prevalence of RAEs, but with small effect sizes. Effect size increased linearly with relative age differences. Follow-up analyses identified age category, skill level and sport context as moderators of RAE magnitude. Sports context involving adolescent (aged 15–18 years) males, at the representative (i.e. regional and national) level in highly popular sports appear most at risk to RAE inequalities. Researchers need to understand the mechanisms by which RAEs magnify and subside, as well as confirm whether RAEs exist in female and more culturally diverse contexts. To reduce and eliminate this social inequality from influencing athletes’ experiences, especially within developmental periods, direct policy, organizational and practitioner intervention is required.

Do walking strategies to increase physical activity reduce reported sitting in workplaces: a randomized control trial

BackgroundInterventions designed to increase workplace physical activity may not automatically reduce high volumes of sitting, a behaviour independently linked to chronic diseases such as obesity and type II diabetes. This study compared the impact two different walking strategies had on step counts and reported sitting times.MethodsParticipants were white-collar university employees (n = 179; age 41.3 ± 10.1 years; 141 women), who volunteered and undertook a standardised ten-week intervention at three sites. Pre-intervention step counts (Yamax SW-200) and self-reported sitting times were measured over five consecutive workdays. Using pre-intervention step counts, employees at each site were randomly allocated to a control group (n = 60; maintain normal behaviour), a route-based walking group (n = 60; at least 10 minutes sustained walking each workday) or an incidental walking group (n = 59; walking in workday tasks). Workday step counts and reported sitting times were re-assessed at the beginning, mid- and endpoint of intervention and group mean± SD steps/day and reported sitting times for pre-intervention and intervention measurement points compared using a mixed factorial ANOVA; paired sample-t-tests were used for follow-up, simple effect analyses.ResultsA significant interactive effect (F = 3.5; p < 0.003) was found between group and step counts. Daily steps for controls decreased over the intervention period (-391 steps/day) and increased for route (968 steps/day; t = 3.9, p < 0.000) and incidental (699 steps/day; t = 2.5, p < 0.014) groups. There were no significant changes for reported sitting times, but average values did decrease relative to the control (routes group = 7 minutes/day; incidental group = 15 minutes/day). Reductions were most evident for the incidental group in the first week of intervention, where reported sitting decreased by an average of 21 minutes/day (t = 1.9; p < 0.057).ConclusionCompared to controls, both route and incidental walking increased physical activity in white-collar employees. Our data suggests that workplace walking, particularly through incidental movement, also has the potential to decrease employee sitting times, but there is a need for on-going research using concurrent and objective measures of sitting, standing and walking.

Stressors and affective states among professional rugby union players

The purpose of the present study was to examine (a) the sources of sport and non‐sport stress and their associated symptoms on rest days, training days, and match days and (b) the temporal aspects of sources and symptoms of stress and affective states. Professional male rugby union players (n=16) completed the Daily Analysis of Life Demands in Athletes (DALDA) and the Activation Deactivation Adjective Check List (AD ACL) for 28 days. On match days players reported that few stressors were “worse than normal.” Most stressors were “worse than normal” on training days followed by rest days and more stressors were “worse than normal” on the day after a match than on match days. Further, players reported an unpleasant, low activation state across the three analysis days, suggesting they were in an overtrained state. The findings of this study demonstrate that professional rugby players experience negative affect and a multitude of sport and non‐sport stressors. Early detection of stressors and negative affective states could help prevent symptoms of overtraining and burnout and facilitate optimal training and sporting performance. Coaches and practitioners are encouraged to integrate the DALDA and AD ACL in their training and performance monitoring regimes.

Processes associated with participation and adherence to a 12-month exercise programme for adults aged 70 and older

This study investigated the processes associated with the engagement of adults aged 70 years and older in a 12-month long research-based structured exercise programme. A sample of 21 participants (Mean age (SD) 75.8 (3.9); 14 females) and six exercise class leaders or researchers involved in the programme participated in individual semi-structured interviews. Transcripts were analysed with the principles of interpretive qualitative analysis. Our findings suggest that a programme that runs locally, provides individual attention/tailoring, delivers meaningful benefits, offers a staged approach to efficacy building, creates a sense of ownership, and provides intergenerational support and opportunities for social interaction, facilitates exercise engagement in later life.

Optimizing lifestyles for men regarded as ‘hard-to-reach’ through top-flight football/soccer clubs

This study assessed the effect of a 12-week behavioural intervention delivered in and by English Premier League football/soccer clubs, and its influence on lifestyle behaviours, in men typically regarded as hard-to-reach. One hundred and thirty men aged 18 years or older engaging in the programme self-reported data on optimal lifestyle behaviours (OLBs) (physical activity, diet, smoking and alcohol consumption) at pre- and post-intervention. Logistic regression models were used to predict the likelihood of OLBs post-intervention. Healthy behaviours were uncommon at baseline, yet at 12 weeks, 19% (n = 24) of men displayed positive change in one behaviour and 67% (n = 87) had changed ≥2. A combination of improving diet (odds ratio [OR] = 2.76; 95% confidence interval [CI] = 1.65-4.63) and being employed (OR = 4.90, CI = 1.46-16.5) significantly increased the likelihood of reporting ≥150 min of physical activity per week. Increased physical activity significantly increased the likelihood of self-reporting a healthy diet (OR = 2.32, CI = 1.36-3.95). This study shows that a 12-week behavioural intervention can reach and engage a proportion of at risk men. Further, among such men, the intervention helped to stabilize and improve several of the most important lifestyle behaviours that impact mortality and morbidity.

Cost effectiveness of interventions to improve moderate physical-activity: A study in nine UK sites

Objective: With growing concerns to establish the value for returns on public health investment, there is a need to identify cost-effective physical activity interventions. This study measured change in moderate physical activity (MPA) in seven community-based intervention types, costs and cost-effectiveness of the interventions, and possible explanations for cost variation. Design: Between 2004 and 2006, pre- and post-intervention assessments identified demographics and MPA levels, and quarterly interviews with intervention managers identified key implementation costs. Setting: Nine sites across the UK. Method: MPA was collected using self-report measures. MPA categories (sedentary, lightly, moderately, highly active) were assigned at pre- and post-intervention. Differences between pre- and post-intervention scores identified MPA change (median metabolic equivalent (MET)-minutes/week) in completers. Cost, attendance and activity data were combined to estimate the average monthly implementation cost, cost per participant attending interventions, and the cost per completer improving MPA category. An economic model was built to estimate the cost per Quality Adjusted Life Year (QALY) gained and potential savings to the National Health Service (NHS). Results: Demographics (n = 984) show that those who engaged with the interventions were predominantly white, British older females. In completers (N = 1,051), 37.9 per cent improved at least one MPA category. The cost per completer improving MPA category ranged from c£260 to c£2,786 (N = 1000). The cost per QALY gained from intervention types ranged from c£47 to c£509, which was below the £20,000 threshold implicit in National Institute for Health and Clinical Excellence (NICE) decisions. Future cost savings to the NHS per intervention participant ranged from c£769 to c£4,891. In the case of each of the interventions, this saving per participant exceeds the implementation cost per participant, which ranged from c£55 to c£3,420 (N = 6940). Conclusions: MPA interventions are cost-effective.

Enduring injustice: a case study of retirement from professional rugby union

Garth Armstrong (pseudonym) agreed to participate based on a pre-existing ‘career-guidance-and-support’ relationship with the researcher, to explore the realities of career transition. An account-making approach was used over the last eight months of his professional rugby-playing career (termination) and for a further ten months into his next career (transition). For Garth, retirement was premature, contested and unjust—he felt the moral outrage of being kicked out and of becoming excluded from his own athletic past. Garth regarded himself as embodying the values of a (proper) ‘rugby man’, which were unmatched by those central to making him retire. Being central to the club and modelling idealized behaviours contrasted with still not being offered a replacement contract, meaning that his retirement represented a strong sense of betrayal. This was compounded by then being offered a contract extension, but only with reduced terms. Even after 18 months, support is continuing with retirement still being discussed.

Patterns of Impact Resulting from a ‘Sit Less, Move More’ Web-Based Program in Sedentary Office Employees

Purpose Encouraging office workers to ‘sit less and move more’ encompasses two public health priorities. However, there is little evidence on the effectiveness of workplace interventions for reducing sitting, even less about the longer term effects of such interventions and still less on dual-focused interventions. This study assessed the short and mid-term impacts of a workplace web-based intervention (Walk@WorkSpain, W@WS; 2010-11) on self-reported sitting time, step counts and physical risk factors (waist circumference, BMI, blood pressure) for chronic disease. Methods Employees at six Spanish university campuses (n=264; 42±10 years; 171 female) were randomly assigned by worksite and campus to an Intervention (used W@WS; n=129; 87 female) or a Comparison group (maintained normal behavior; n=135; 84 female). This phased, 19-week program aimed to decrease occupational sitting time through increased incidental movement and short walks. A linear mixed model assessed changes in outcome measures between the baseline, ramping (8 weeks), maintenance (11 weeks) and follow-up (two months) phases for Intervention versus Comparison groups. Results A significant 2 (group) × 2 (program phases) interaction was found for self-reported occupational sitting (F[3]=7.97, p=0.046), daily step counts (F[3]=15.68, p=0.0013) and waist circumference (F[3]=11.67, p=0.0086). The Intervention group decreased minutes of daily occupational sitting while also increasing step counts from baseline (446±126; 8,862±2,475) through ramping (+425±120; 9,345±2,435), maintenance (+422±123; 9,638±3,131) and follow-up (+414±129; 9,786±3,205). In the Comparison group, compared to baseline (404±106), sitting time remained unchanged through ramping and maintenance, but decreased at follow-up (-388±120), while step counts diminished across all phases. The Intervention group significantly reduced waist circumference by 2.1cms from baseline to follow-up while the Comparison group reduced waist circumference by 1.3cms over the same period. Conclusions W@WS is a feasible and effective evidence-based intervention that can be successfully deployed with sedentary employees to elicit sustained changes on “sitting less and moving more”.

Obese young people's accounts of intervention impact

OBJECTIVE To uncover in-depth qualitative accounts of intervention impact from obese young people during a period of lifestyle change after attending a residential weight-loss camp. METHODS An innovative, progressively focused process of (1) single end-of-stay interviews, (2) interviews repeated in the home environment at 3 months and (3) 9 months. Comprehensive data were collected from five information-rich cases who contributed at each stage. Verbatim transcripts were analysed to identify issues associated with camp impact. RESULTS Reporting positive in-camp experiences, there were also anxieties about returning home and successfully translating knowledge and behaviors into longer term strategies. Inductive analysis suggested cognitive ambiguity in relation to positive camp impact. This developed and intensified over the 9 months of post-camp experience, despite the help of supportive others. CONCLUSION Young people described a positive post-camp impact that continued into the home environment. Unexpectedly, though it was also an ambiguous experience. Cognitive ambiguity created behavioral conflict which undermined motivation for sustained healthy living. PRACTICE IMPLICATIONS These unique accounts enable service providers to better understand post-camp experiences and use them to work with young people towards more positive outcomes. Even after intensive and successful intervention young people may still require ongoing support for continued lifestyle change.

Exercising at work and self‐reported work performance

Purpose – The purpose of this paper is to address the interplay of workplace exercising on self‐reported workplace performance.Design/methodology/approach – A mixed methods design combined a randomised cross‐over trial with concurrent focus groups. Three workplaces (two private companies, one public service organisation) were purposefully selected for their provision of on‐site exercise facilities, size (>250 employees) and large proportion of sedentary occupations. Two mood diary questionnaires were distributed to employees exercising on‐site only. Order of questionnaire completion was randomised: self‐selected exercise‐day (ExD) or no‐exercise day (NExD) first. Exercise specifics (duration, intensity, mode) and ExD mood (pre‐/post‐exercise) were recorded. On NExD, mood was measured early and late in the working day. A 15‐item work performance grid was completed at day‐ends. Three on‐site focus groups were held concurrently to explore performance‐related topics.Findings – Among 201 volunteer respondents ...