Recent Submissions

  • The effect of movement variability on putting proficiency during the golf putting stroke

    Richardson, Ashley K; Mitchell, Andrew C.S.; Hughes, Gerwyn T.G.; Abertay University; University of Bedfordshire; University of San Francisco (SAGE Publications Inc., 2018-04-04)
    Movement variability has been considered important to execute an effective golf swing yet is comparatively unexplored regarding the golf putt. Movement variability could potentially be important considering the small margins of error between a successful and a missed putt. The aim of this study was to assess whether variability of body segment rotations influence putting performance (ball kinematic measures). Eight golfers (handicap range 0–10) performed a 3.2 m level putt wearing retro-reflective markers which were tracked using a three-dimensional motion analysis system sampling at 120 Hz. Ball roll kinematics were recorded using Quintic Ball Roll launch monitor. Movement (segment) variability was calculated based on a scalene ellipsoid volume concept and correlated with the coefficient of variation of ball kinematics. Statistical analysis showed no significant relationships between segment variability and putting proficiency. One significant relationship was identified between left forearm variability and horizontal launch angle, but this did not result in deficits in putting success. Results show that performance variability in the backswing and downswing is not related to putting proficiency or the majority of ball roll measures. Differing strategies may exist where certain golfers may have more fluid movement patterns thereby effectively utilising variability of movement. Therefore, golf instructors should consider movement variability when coaching the golf putt.
  • Acute effects of a loaded warm-up protocol on change of direction speed in professional badminton players

    Maloney, Sean J.; Turner, Anthony; Miller, Stuart; ; University of Bedfordshire; Middlesex University (Human Kinetics Publishers Inc., 2014-10-31)
    It has previously been shown that a loaded warm-up may improve power performances. We examined the acute effects of loaded dynamic warm-up on change of direction speed (CODS), which had not been previously investigated. Eight elite badminton players participated in three sessions during which they performed vertical countermovement jump and CODS tests before and after undertaking the dynamic warm-up. The three warm-up conditions involved wearing a weighted vest (a) equivalent to 5% body mass, (b) equivalent to 10% body mass, and (c) a control where a weighted vest was not worn. Vertical jump and CODS performances were then tested at 15 seconds and 2, 4, and 6 minutes post warm-up. Vertical jump and CODS significantly improved following all warm-up conditions (P < .05). Post warm-up vertical jump performance was not different between conditions (P = .430). Post warm-up CODS was significantly faster following the 5% (P = .02) and 10% (P < .001) loaded conditions compared with the control condition. In addition, peak CODS test performances, independent of recovery time, were faster than the control condition following the 10% loaded condition (P = .012). In conclusion, the current study demonstrates that a loaded warm-up augmented CODS, but not vertical jump performance, in elite badminton players.
  • Determinants of club head speed in PGA professional golfers

    Lewis, Adam L,; Ward, Nicholas; Bishop, Chris; Maloney, Sean J.; Turner, Anthony; ; Sandy Lodge golf club; England Golf; Middlesex University; University of Bedfordshire (NSCA National Strength and Conditioning Association, 2016-08-31)
    Turner, AN. Determinants of club head speed in PGA professional golfers. J Strength Cond Res 30(8): 2266-2270, 2016 - Club head speed (CHS) has been significantly correlated with golf performance, but only in amateurs. The purpose of this study therefore, was to investigate the relationship between field-based measures of strength and power with CHS in Professional Golfers Association (PGA) professional golfers, and further determine differences between age groups. A correlation design was used to test relationships between squat jump (SJ), seated medicine ball throw (SMBT), rotational medicine ball throw (RMBT), and CHS. Twenty participants volunteered to take part in the study (age, 31.95 ± 8.7 years; height, 182.75 ± 6.88 cm; mass, 90.47 ± 15.6 kg). Intraclass correlation coefficients reported high reliability for performance variables (r 0.85-0.95). Significant correlations (p < 0.01) were found between CHS and SJ (r 0.817) and SMBT (r 0.706), but not RMBT (r 0.572). A stepwise linear regression analysis identified that SJ and SMBT explained 74% of the variance in CHS. When dividing the sample based on age, professionals <30 years (n 10; 25.6 ± 2.9 years) displayed significantly (p ≤ 0.05) higher CHS and SJ height compared with professionals >30 (n 10; 39.7 ± 5.5 years). Correlations to CHS for <30 were significant for SJ (r 0.801) and SMBT (r 0.643), but nonsignificant for RMBT. Those >30 had significant correlations to CHS not only in SMBT (r 0.881) and SJ (r 0.729), but also in RMBT (r 0.642). The results of this study suggest that SJ and SMBT have the largest contribution to CHS in PGA professional golfers. When comparing age groups, it appears that younger golfers (<30 years) utilize more leg strength whereas older golfers (>30 years) utilize more upper body strength. Results suggest that strength-based leg exercises and power-based chest exercises may improve CHS in professional golfers.
  • Within-season distribution of external training and racing workload in professional male road cyclists

    Metcalfe, Alan J.; Menaspà, Paolo; Villerius, Vincent; Quod, Marc; Peiffer, Jeremiah J.; Govus, Andrew; Abbiss, Chris R. (Human Kinetics, 2017-04-30)
    To describe the within-season external workloads of professional male road cyclists for optimal training prescription. Training and racing of 4 international competitive professional male cyclists (age 24 ± 2 y, body mass 77.6 ± 1.5 kg) were monitored for 12 mo before the world team-time-trial championships. Three within-season phases leading up to the team-time-trial world championships on September 20, 2015, were defined as phase 1 (Oct-Jan), phase 2 (Feb-May), and phase 3 (June-Sept). Distance and time were compared between training and racing days and over each of the various phases. Times spent in absolute (<100, 100-300, 400-500, >500 W) and relative (0-1.9, 2.0-4.9, 5.0-7.9, >8 W/kg) power zones were also compared for the whole season and between phases 1-3. Total distance (3859 ± 959 vs 10911 ± 620 km) and time (240.5 ± 37.5 vs 337.5 ± 26 h) were lower (P < .01) in phase 1 than phase 2. Total distance decreased (P < .01) from phase 2 to phase 3 (10911 ± 620 vs 8411 ± 1399 km, respectively). Mean absolute (236 ± 12.1 vs 197 ± 3 W) and relative (3.1 ± 0 vs 2.5 ± 0 W/kg) power output were higher (P < .05) during racing than training, respectively. Volume and intensity differed between training and racing over each of 3 distinct within-season phases.
  • How effective is community physical activity promotion in areas of deprivation for inactive adults with cardiovascular disease risk and/or mental health concerns? Study protocol for a pragmatic observational evaluation of the 'Active Herts' physical activity programme

    Howlett, Neil; Jones, Andy; Bain, Lucy; Chater, Angel M.; University of Bedfordshire; University of Hertfordshire; University of East Anglia; University College London (BMJ Publishing Group, 2017-11-25)
    Introduction There is a high prevalence of inactive adults in the UK, and many suffer from conditions such as cardiovascular disease (CVD) or poor mental health. These coexist more frequently in areas of higher socioeconomic deprivation. There is a need to test the effectiveness, acceptability and sustainability of physical activity programmes. Active Herts uses novel evidence-based behaviour change techniques to target physical inactivity. Methods and analysis Active Herts is a community physical activity programme for inactive adults aged 16+ with one or more risk factors for CVD and/or a mild to moderate mental health condition. This evaluation will follow a mixed-methods longitudinal (baseline, and 3-month, 6-month and 12-month follow-ups) design. Pragmatic considerations mean delivery of the programme differs by locality. In two areas programme users will receive a behaviour change technique booklet, regular consultations, a booster phone call, motivational text messages and signposting to 12 weeks of exercise classes. In another two areas programme users will also receive 12 weeks of free tailored exercise classes, with optional exercise 'buddies' available. An outcome evaluation will assess changes in physical activity as the primary outcome, and sporting participation, sitting, well-being, psychological capability and reflective motivation as secondary outcomes. A process evaluation will explore the views of stakeholders, delivery staff and programme leads. Economic evaluation will examine the programme costs against the benefits gained in terms of reduced risk of morbidity. Ethics and dissemination This study was been approved by the Faculty of Medicine and Health Sciences Research Ethics Committee at the University of East Anglia. Informed written consent will be obtained from programme users in the evaluation. Results will be published in peer-reviewed journals, presented at conferences, and shared through the study website and local community outlets. Trial registration number ClinicalTrials.gov ID number: NCT03153098.
  • Are physical activity interventions for healthy inactive adults effective in promoting behavior change and maintenance, and which behavior change techniques are effective? A systematic review and meta-analysis

    Howlett, Neil; Trivedi, Daksha; Troop, Nicholas A.; Chater, Angel M.; University of Bedfordshire; University College London; University of Hertfordshire (Oxford University Press, 2018-02-28)
    Physical inactivity and sedentary behavior relate to poor health outcomes independently. Healthy inactive adults are a key target population for prevention. This systematic review and meta-analysis aimed to evaluate the effectiveness of physical activity and/or sedentary behavior interventions, measured postintervention (behavior change) and at follow-up (behavior change maintenance), to identify behavior change techniques (BCT) within, and report on fidelity. Included studies were randomized controlled trials, targeting healthy inactive adults, aiming to change physical activity and/or sedentary behavior, with a minimum postintervention follow-up of 6 months, using 16 databases from 1990. Two reviewers independently coded risk of bias, the “Template for Intervention Description and Replication” (TIDieR) checklist, and BCTs. Twenty-six studies were included; 16 pooled for meta-analysis. Physical activity interventions were effective at changing behavior (d = 0.32, 95% confidence intervals = 0.16–0.48, n = 2,346) and maintaining behavior change after 6 months or more (d = 0.21, 95% confidence intervals = 0.12–0.30, n = 2,190). Sedentary behavior interventions (n = 2) were not effective. At postintervention, physical activity intervention effectiveness was associated with the BCTs “Biofeedback,” “Demonstration of the behavior,” “Behavior practice/rehearsal,” and “Graded tasks.” At follow-up, effectiveness was associated with using “Action planning,” “Instruction on how to perform the behavior,” “Prompts/ cues,” “Behavior practice/rehearsal,” “Graded tasks,” and “Self-reward.” Fidelity was only documented in one study. Good evidence was found for behavior change maintenance effects in healthy inactive adults, and underlying BCTs. This review provides translational evidence to improve research, intervention design, and service delivery in physical activity interventions, while highlighting the lack of fidelity measurement.
  • Negative psychological experiences and saliva secretory immunoglobulin A in field hockey players

    Taylor, Ian M.; Turner, James E.; Gleeson, Michael; Hough, John (Taylor and Francis Inc., 2014-11-11)
    Understanding psychological factors that affect immunity in sport might help to reduce infection risk in athletes. The present study examined within-person changes and individual differences in perceived coach control, intentions to drop out, and saliva secretory immunoglobulin A (SIgA). Thirty-two field hockey players completed questionnaires and provided saliva samples over a 2-month period. Within-person increases in individuals’ perceptions of psychological control and intentions to drop out were positively associated with SIgA concentration. Individual differences in control or drop-out intentions were not associated with SIgA. Interventions in athletes to prevent immune disturbances and reduce infection should consider these psychological factors.
  • Blunting of exercise-induced salivary testosterone in elite-level triathletes with a 10-day training camp

    Hough, John; Robertson, Caroline; Gleeson, Michael; (Human Kinetics Publishers Inc., 2015-12-31)
    Purpose: This study examined the influence of 10 days of intensified training on salivary cortisol and testosterone responses to 30-min, high-intensity cycling (55/80) in a group of male elite triathletes. Methods: Seven elite male triathletes (age 19 ± 1 y, VO2max 67.6 ± 4.5 mL · kg-1 · min-1) completed the study. Swim distances increased by 45%. Running and cycling training hours increased by 25% and 229%, respectively. REST-Q questionnaires assessed mood status before, during, and after the training period. Unstimulated saliva samples were collected before, after, and 30 min after a continuous, high-intensity exercise test. Salivary cortisol and testosterone concentrations were assessed. Results: Compared with pretraining, blunted exercise-induced salivary testosterone responses to the posttraining 55/80 were found (P = .004). The absolute response of salivary testosterone concentrations to the 55/80 decreased pretraining to posttraining from 114% to 85%. No changes were found in exercise-induced salivary cortisol concentration responses to the 55/80. REST-Q scores indicated no changes in the participants' psychological stress-recovery levels over the training camp. Conclusions: The blunted exercise-induced salivary testosterone is likely due to decreased testicular testosterone production and/or secretion, possibly attributable to hypothalamic dysfunction or reduced testicular blood flow. REST-Q scores suggest that the triathletes coped well with training-load elevations, which could account for the finding of no change in the exercise-induced salivary cortisol concentration. Overall, these findings suggest that the 55/80 can detect altered exercise-induced salivary testosterone concentrations in an elite athletic population due to increased training stress. However, this alteration occurs independently of a perceived elevation of training stress.
  • The impact of playing in matches while injured on injury surveillance findings in professional football

    Hammond, Lucy E.; Lilley, J.M.; Pope, G.D.; Ribbans, W.J.; (Blackwell Munksgaard, 2013-10-10)
    This study aimed to analyze the frequency, nature, and consequences of footballers playing matches while injured, and to examine the impact on injury surveillance findings. High levels of inter-rater reliability and content validity were established for a tool designed to document players who were already injured at the start of a match. The tool was implemented in three English football teams (a Championship, League 1, and League 2 team) for one season, using a "time loss" definition of injury. One hundred forty-three matches were surveyed, revealing 102 match appearances by players who were already injured. Almost half of all games featured at least one injured player, with episodes of playing with injury occurring more frequently and lasting longer in League 2 players compared with higher level players. No association was observed between the number of injured players starting matches and match outcome [χ2(4, N=143)=3.27, P=0.514]. Fifteen percent of all injury episodes captured were only through prospective documentation of playing while injured. The findings show that both traumatic and overuse injuries are managed by footballers through competitive matches, and have important implications for aiding understanding of the epidemiology of injury in professional football..
  • Examination physical education: adhering to pedagogies of the classroom when coming in from the cold

    Casey, Ashley; O'Donovan, Toni (Routledge, 2013-09-16)
    Background: Green and Thorburn claim that examination physical education now holds a dominant place in both the UK's national discourse and in the lives and careers of many teachers. Despite the move towards the academicisation of physical education and the proliferation of accredited qualifications in a number of countries, both of which have been celebrated by many physical educators, there is little research that investigates the actual process of teaching such courses. Purpose: The purpose of this paper is to explore how pedagogical change in examination physical education using collaborative learning was experienced by, and impacted on, pupils and teachers in one school during a year long, assessed unit of Advanced Subsidiary Level physiology and anatomy that formed part of a wider examination course in physical education. Methodology: The study took place in a comprehensive secondary school in the South East of England. With support from his head of department, a teacher attempted to modify his pedagogical approach away from the didactic approach that dominated his classroom-based teaching of AS Level physical education. Interviews were undertaken with the teacher and the head of department (HoD) both before the start of the course and after the exam results were published. Additionally, each student (n = 5) was interviewed and a wiki (which had been set up as a platform for collaborative learning within the group) was analysed for content and usage. The interviews were transcribed verbatim and each was independently analysed by the researchers. Data were subject to inductive analysis and constant comparison and key themes were drawn from this process. Findings: The paper examines the concerns about performance and engagement of pupils with AS physical education and interrogates the teachers' beliefs about the underpinning pedagogical issues in the teaching of this course. The teachers' expressed concern about the pedagogical knowledge and subject matter content knowledge for anatomy and physiology units. The process of changing the traditional teaching styles adopted for this unit is explored from both teacher and pupil perspectives. Finally, we consider the impact of the pedagogical changes on teachers, pupils and examination results.
  • The effect of different environmental conditions on the decision-making performance of soccer goal line officials

    Watkins, Samuel L.; Castle, Paul C.; Mauger, Alexis R.; Sculthorpe, Nicholas; Fitch, Natalie; Aldous, Jeffrey William Frederick; Brewer, John; Midgley, Adrian W.; Taylor, Lee (Taylor and Francis Inc., 2014-10-08)
    Goal line officials (GLO) are exposed to extreme environmental conditions when employed to officiate in professional European soccer cup competitions. The present study aimed to investigate the effect of such environments on GLO decision-making ability. Thirteen male participants were exposed to three conditions: cold (-5°C, 50% relative humidity (RH)); temperate (18°C, 50% RH); and hot (30°C, 50% RH) for 90 min per condition, with a 15 min half-time break after 45 min. Decision-making ability was assessed throughout the 90 min exposure. Core and skin temperatures were recorded throughout. Decision making was improved during exposure to the temperate condition when compared with the cold (mean difference = 12.5%; 95% CI = 1.1%, 23.9%; P = 0.031). Regression analysis indicated that as skin temperature increases so does decision-making ability. Exposure to cold conditions diminished the decision-making ability of GLO.
  • Effect of tyrosine ingestion on cognitive and physical performance utilising an intermittent soccer performance test (iSPT) in a warm environment

    Coull, Nicole; Watkins, Samuel L.; Aldous, Jeffrey William Frederick; Warren, Lee K.; Chrismas, Bryna C.; Dascombe, Ben; Mauger, Alexis R.; Abt, Grant; Taylor, Lee (Springer, 2014-10-19)
    Abstract Purpose The aim of this study was to investigate the effect of tyrosine (TYR) ingestion on cognitive and physical performance during soccer-specific exercise in a warm environment. Methods Eight male soccer players completed an individualised 90 min soccer-simulation intermittent soccer performance test (iSPT), on a non-motorised treadmill, on two occasions, within an environmental chamber (25 °C, 40 % RH). Participants ingested tyrosine (TYR; 250 mL sugar free drink plus 150 mg kg body mass−1 TYR) at both 5 h and 1 h pre-exercise or a placebo control (PLA; 250 mL sugar free drink only) in a double-blind, randomised, crossover design. Cognitive performance (vigilance and dual-task) and perceived readiness to invest physical effort (RTIPE) and mental effort (RTIME) were assessed: pre-exercise, half-time, end of half-time and immediately post-exercise. Physical performance was assessed using the total distance covered in both halves of iSPT. Results Positive vigilance responses (HIT) were significantly higher (12.6 ± 1.7 vs 11.5 ± 2.4, p = 0.015) with negative responses (MISS) significantly lower (2.4 ± 1.8 vs 3.5 ± 2.4, p = 0.013) in TYR compared to PLA. RTIME scores were significantly higher in the TYR trial when compared to PLA (6.7 ± 1.2 vs 5.9 ± 1.2, p = 0.039). TYR had no significant (p > 0.05) influence on any other cognitive or physical performance measure. Conclusion The results show that TYR ingestion is associated with improved vigilance and RTIME when exposed to individualised soccer-specific exercise (iSPT) in a warm environment. This suggests that increasing the availability of TYR may improve cognitive function during exposure to exercise-heat stress.
  • Ballistic exercise as a pre-activation stimulus: a review of the literature and practical applications

    Maloney, Sean J.; Turner, Anthony; Fletcher, Iain M.; (Springer International Publishing, 2014-06-19)
    Post-activation potentiation (PAP) refers to the acute enhancement of muscular function as a direct result of its contractile history. Protocols designed to elicit PAP have commonly employed heavy resistance exercise (HRE) as the pre-activation stimulus; however, a growing body of research suggests that low-load ballistic exercises (BE) may also provide an effective stimulus. The ability to elicit PAP without the need for heavy equipment would make it easier to utilise prior to competition. It is hypothesised that BE can induce PAP given the high recruitment of type II muscle fibres associated with its performance. The literature has reported augmentations in power performance typically ranging from 2 to 5 %. The performance effects of BE are modulated by loading, recovery and physical characteristics. Jumps performed with an additional loading, such as depth jumps or weighted jumps, appear to be the most effective activities for inducing PAP. Whilst the impact of recovery duration on subsequent performance requires further research, durations of 1–6 min have been prescribed successfully in multiple instances. The effect of strength and sex on the PAP response to BE is not yet clear. Direct comparisons of BE and HRE, to date, suggest a tendency for HRE protocols to be more effective; future research should consider that these strategies must be optimised in different ways. The role of acute augmentations in lower limb stiffness is proposed as an additional mechanism that may further explain the PAP response following BE. In summary, BE demonstrates the potential to enhance performance in power tasks such as jumps and sprints. This review provides the reader with some practical recommendations for the application of BE as a pre-activation stimulus.
  • Why is our PE teacher education curriculum white? a collaborative self-study of teaching about ‘race’ in PETE programmes

    Hill, Joanne; Walton-Fisette, Jennifer L. (Routledge, 2019-06-04)
    Why is my curriculum white? is a student-led movement that has questioned the centrality of white perspectives in higher education. Originating in the United Kingdom (UK) with an event and film produced by students at University College London (UCLTV, 2014, https://youtu.be/Dscx4h2l-Pk,), the movement suggests that white theorists and viewpoints have been privileged over Black and Minority Ethnic (BME) or postcolonial scholars. They raise concerns that a white focused curriculum has a universalising effect, making white-specific theories appear to speak about all human experience. According to this movement, if universities are to be as inclusive as they claim, they are challenged to develop curricula that reflect this, as opposed to focusing on diversity, which has tended to be framed in relation to the numbers of BME staff and students and celebrated as a proxy for equality (Archer, 2007; Husain, 2015; Pilkington, 2016). Higher education institutions (HEIs) are not neutral, but reproduce implicit perspectives on reading lists, the sequencing of issues, and consistent messages (Cochran-Smith, 2000). We could also add, how students’ needs are addressed, and how these needs are dealt with, as well as HEIs’ expectations of (BME and disadvantaged) students’ engagement and success. We propose that explicit and hidden curricular material and delivery may contribute to maintaining the status quo, thus racial inequalities; and despite equal opportunity attempts (such as the Widening Participation agenda in the UK), BME students are less likely to be awarded 2:1/1st degrees compared to their white peers; they have higher rates of underachievement, drop out, exclusion, unemployment, and incarceration (Lander, 2016; Pilkington, 2016).
  • Gender, age and physical activity representation in children's colouring books (Representación del género, la edad y la actividad física en libros para colorear infantiles)

    Martínez Bello, Vladimir; Hill, Joanne; ; Universidad de Valencia; University of Bedfordshire (Revistas Universidad de León, 2020-06-24)
    Despite publishing houses recognizing the importance of ensuring equal representation of all people in curricular materials and scholars also noting their importance in teaching children gendered behaviours, it is still common to find stereotypically gendered non-coeducational curriculum materials in the international market. The aim of this study is to determine the representation of female and male characters in the illustrations of six colouring books published in the United Kingdom entitled “Books for Girls” and “Books for Boys”. A quantitative content analysis, and a supporting qualitative discourse analysis were carried out. This paper examines the effect of constructing gender difference in children’s colouring books. Gender bias in early childhood education poses the risk of perpetuating a manifestation of inequality.
  • Randomised controlled feasibility study of the MyHealthAvatar-Diabetes smartphone app for reducing prolonged sitting time in Type 2 diabetes mellitus

    Bailey, Daniel Paul; Mugridge, Lucie; Dong, Feng; Zhang, Xu; Chater, Angel M.; Brunel University; University of Bedfordshire; University of Strathclyde (MDPI, 2020-06-19)
    This study evaluated the feasibility and acceptability of a self-regulation smartphone app for reducing prolonged sitting in people with Type 2 diabetes mellitus (T2DM). This was a two-arm, randomised, controlled feasibility trial. The intervention group used the MyHealthAvatar-Diabetes smartphone app for 8 weeks. The app uses a number of behaviour change techniques aimed at reducing and breaking up sitting time. Eligibility, recruitment, retention, and completion rates for the outcomes (sitting, standing, stepping, and health-related measures) assessed trial feasibility. Interviews with participants explored intervention acceptability. Participants with T2DM were randomised to the control (n = 10) and intervention groups (n = 10). Recruitment and retention rates were 71% and 90%, respectively. The remaining participants provided 100% of data for the study measures. The MyHealthAvatar-Diabetes app was viewed as acceptable for reducing and breaking up sitting time. There were preliminary improvements in the number of breaks in sitting per day, body fat %, glucose tolerance, attitude, intention, planning, wellbeing, and positive and negative affect in favour of the intervention group. In conclusion, the findings indicate that it would be feasible to deliver and evaluate the efficacy of the MyHealthAvatar-Diabetes app for breaking up sitting time and improving health outcomes in a full trial.
  • Effects of exercise, cognitive, and dual-task interventions on cognition in type 2 diabetes mellitus: a systematic review and meta-analysis

    Cooke, Samuel; Pennington, Kyla; Jones, Arwel; Bridle, Christopher; Smith, Mark F.; Curtis, Ffion; (Public Library of Science, 2020-05-14)
    Introduction Previous evidence has shown significant effects of exercise, cognitive and dual-task training for improving cognition in healthy cohorts. The effects of these types of interventions in type 2 diabetes mellitus is unclear. The aim of this research was to systematically review evidence, and estimate the effect, of exercise, cognitive, and dual-task interventions on cognition in type 2 diabetes mellitus. Method Electronic databases including PubMed, EMBASE, CINAHL, PsycINFO, SPORTDiscus, and MEDLINE were searched for ongoing and completed interventional trials investigating the effect of either an exercise, cognitive or dual-task intervention on cognition in type 2 diabetes mellitus. Results Nine trials met the inclusion criteria–one dual-task, two cognitive, and six exercise. Meta-analyses of exercise trials showed no significant effects of exercise on measures of executive function (Stroop task, SMD = -0.31, 95% CI -0.71–0.09, P = 0.13, trail making test part A SMD = 0.28, 95% CI -0.20–0.77 P = 0.25, trail making test part B SMD = -0.15, 95% CI -0.64–0.34 P = 0.54, digit symbol SMD = 0.09, 95% CI -0.39–0.57 P = 0.72), and memory (immediate memory SMD = 0.20, 95% CI -0.28–0.69, P = 0.41 and delayed memory SMD = -0.06, 95% CI -0.55–0.42, P = 0.80). A meta-analysis could not be conducted using cognitive or dual-task data, but individual trials did report a favourable effect of interventions on cognition. Risk of bias was considered moderate to high for the majority of included trials. Conclusions Meta-analyses of exercise trials identified a small effect size (0.31), which whilst not significant warrants further investigation. Larger and more robust trials are needed that report evidence using appropriate reporting guidelines (e.g. CONSORT) to increase confidence in the validity of results.
  • Physical activity for the benefit of mental health outcomes in young people: a focus on parental bereavement

    Chater, Angel M.; Williams, Jane; Shorter, Gillian; Howlett, Neil; University of Bedfordshire; University of Ulster; University of Hertfordshire (BASES, 2020-06-13)
    First published in The Sport and Exercise Scientist, Issue 64, Summer 2020. Published by the British Association of Sport and Exercise Sciences - www.bases.org.uk”
  • Determinants of weekly sitting time: construct validation of an initial COM-B model and comparison of its predictive validity with the Theory of Planned Behaviour

    Howlett, Neil; Schulz, Joerg; Trivedi, Daksha; Troop, Nicholas A.; Chater, Angel M.; University of Hertfordshire; University of Bedfordshire (Taylor & Francis, 2020-05-14)
    Objective: In relation to sitting behaviour, to investigate which theoretical domains best formed the Capability, Opportunity, and Motivation constructs of the COM-B, and compare the predictive validity to the Theory of Planned Behaviour (TPB), taking habit strength into consideration. Design: Using a prospective design, 186 adults completed measures capturing domains from the Theoretical Domains Framework for the three COM-B constructs, and habit strength, which were examined using a formative measurement model. Predictive validity was then compared to the TPB. Main Outcome Measures: Self-reported sitting behaviour. Results: Self-monitoring (behavioural regulation domain) formed Capability; subjective norm (social influences domain) formed Opportunity; intention (intentions domain), positive affect (emotion domain), and perceived behavioural control (beliefs about capabilities domain), formed Motivation. The COM-B strongly predicted sitting behaviour (27% variance explained), with Capability, Opportunity, and habit strength as key drivers. The TPB explained a large amount of variance (23%) in sitting behaviour, with intention and habit strength as key drivers. Conclusions: The behavioural regulation domain of Capability, the social influences domain of Opportunity, and habit strength were important drivers of sitting behaviour, with comparable variance predicted in the COM-B and TPB. Future research should consider this approach to conceptualise the COM-B for specific populations and behaviours.
  • Acute effects of breaking up prolonged sedentary time on cardiovascular disease risk markers in adults with paraplegia

    Bailey, Daniel Paul; Withers, Thomas M.; Goosey-Tolfrey, Victoria L.; Dunstan, David W.; Leicht, Christof A.; Champion, Rachael B.; Charlett, Opie P.; Ferrandino, Louise; (John Wiley and Sons, 2020-04-03)
    Elevated levels of cardiovascular disease (CVD) risk markers are highly prevalent in people with a spinal cord injury (SCI). Breaking up prolonged sedentary time with short, regular bouts of physical activity can reduce postprandial glucose and lipid levels in able-bodied individuals. The effects in people with paraplegia are unknown. The study aims were to examine the acute postprandial glucose (primary aim), lipid, blood pressure, and psychological responses (secondary aims) to breaking up prolonged sedentary time in individuals with paraplegia. This was a randomized crossover design trial. Fourteen participants with paraplegia (age 51 +- 9 years, trunk fat mass 44.3 +- 7.7%) took part in the following two, 5.5-hour conditions: (1) uninterrupted sedentary time (SED), and (2) sedentary time interrupted with 2 minutes of moderate-intensity arm crank ergometer physical activity every 20 minutes (SEDACT). Standardized breakfast and lunch test meals were consumed during each condition. The outcomes were compared between conditions using linear mixed models. Glucose area under the curve (AUC) was significantly lower during the lunch postprandial period in SED-ACT vs SED (incremental AUC 1.9 [95% CI 1.0, 2.7) and 3.0 [2.1, 3.9] mmol/L∙2.5 hour, respectively, P = .015, f = 0.34). There were no differences between conditions for the breakfast or total 5.5 hours postprandial periods (P > .05). Positive affect was higher in SED-ACT than SED (P = .001). Breaking up prolonged sedentary time acutely attenuates lunch postprandial glucose and improves positive affect in people with paraplegia. This may have clinical relevance for reducing CVD risk and improving psychological well-being in this population.

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