Examining the validity and reliability of the Chinese version of the International Physical Activity Questionnaire, long form (IPAQ-LC)

Objective : To investigate the reliability and the validity of the long format, Chinese version of the International Physical Activity Questionnaire (IPAQ-LC). Design : Cross-sectional study, examining the reliability and validity of the IPAQ-LC compared with a physical activity log (PA-log) and objective accelerometry. Setting : Self-reported physical activity (PA) in Hong Kong adults. Subjects : A total of eighty-three Chinese adults (forty-seven males, thirty-six females) were asked to wear an ActiTrainer accelerometer (MTI-ActiGraph, Fort Walton Beach, FL, USA) for >10 h over 7 d, to complete a PA-log at the end of each day and to complete the IPAQ-LC on day 8. On a sub-sample of twenty-eight adults the IPAQ-LC was also administered on day 11 to assess its reliability. Results : The IPAQ-LC had good test–retest reliability for grouped activities, with intra-class correlation coefficients ranging from 0·74 to 0·97 for vigorous, moderate, walking and total PA, with between-test effect sizes that were small (<0·49). The Spearman correlation coefficients were statistically significant for vigorous PA (r = 0·28), moderate + walking PA (r = 0·27), as well as overall PA (r = 0·35), when compared with the accelerometry-based criterion measures, but none of the IPAQ activity categories correlated significantly with the PA-log. In absolute units, only the IPAQ light and overall PA did not differ significantly from the accelerometry measures, yet overall PA was able to faithfully discriminate between quartiles of PA (P = 0·019) when compared to accelerometry. Conclusions : The IPAQ-LC demonstrated adequate reliability and showed sufficient evidence of validity in assessing overall levels of habitual PA to be used on Hong Kong adults

Gender issues in sport and exercise

Proceedings of the Gender Issues in Sport and Exercise Conference organised by the Centre for Physical Education and Sport, the Physical Education and Sports Science Unit of the University of Hong Kong, and sponsored by the Hong Kong Sports Development Board, Saturday, 25 November 1995, Sports House, Causeway Bay, Hong Kong.published_or_final_versionAppearance and performance: creating a gender based sport ethic in rhythmic gymnastics Johns, David P. Johns, David P. 90Portrayal of sportwoman in selected Hong Kong newspapers Hon, Sze-sze Hon, Sze-sze 89Introduction to the conference Speak, Mike Speak, Mike Macfarlane, Duncan Macfarlane, Duncan viiThe effectof gender-role stereotyping on the choice of sport of secondary school girls in Hong Kong Lo, Hing- yeung, Simon Lo, Hing-yeung, Simon 88Conference contributors vEditor's note Macfarlane, D.J. Macfarlane, D.J. iiParticipation in and attitudes towards sport and physical activity by male and female students entering the University of Hong Kong in 1993-94 Speak, M.A. Speak, M.A. Lindner, K.J. Lindner, K.J. 87Gender issues in sport and exercise Wells, Howard J.C. Wells, Howard J.C. viiiReliability of a questionnaire to investigate differences in habitual physical activity of Hong Kong primary school children - a pilot study MacFarlane, D.J. MacFarlane, D.J. Chan, M.K. Chan, M.K. 86A case study of female students' participation and attitudes towards school physical education and sport as compared with male students in one primary and one secondary school Ching, Wai-kin, Joe Ching, Wai-kin, Joe 85Changing the culture of sport White, Anita White, Anita 21Participation of females in physical activity and sports in ancient China Speak, M.A. Speak, M.A. 83Sports participation in Macau dyring transition period 1999 Wong, Shu-sing, Paul Wong, Shu-sing, Paul 84Introduction to gender issues in Hong Kong Pearson, Veronica Pearson, Veronica 34Inactivity of male & female children McManus, Alison McManus, Alison Armstrong, N. Armstrong, N. 35Gender differences in the experience of anxiety in competitive sport, among Hong Kong elite athletes Leahy, Trisha Leahy, Trisha Cheung, Fanny M. Cheung, Fanny M. 64Gender differences in the experience of anxiety in competitive sport among Hong Kong elite athletes Leahy, Trisha Leahy, Trisha 63Male and female sport participation in Hong Kong Sivan, Atara Sivan, Atara Roberston, Robert W. Roberston, Robert W. 56Promotion of female sport in schools Ip, Hay-wood Ip, Hay-wood 46Why Hong Kong female athletes perform better Chan, Amy Chan, Amy 40University entrants' opinions on gender and sport issues Lindner, K.J. Lindner, K.J. Speak, M.A. Speak, M.A. 82Gender relations in sport Loy, John W. Loy, John W.

Validity of the international physical activity questionnaire short form (IPAQ-SF): A systematic review

<p>Abstract</p> <p>Background</p> <p>The International Physical Activity Questionnaire - Short Form (IPAQ-SF) has been recommended as a cost-effective method to assess physical activity. Several studies validating the IPAQ-SF have been conducted with differing results, but no systematic review of these studies has been reported.</p> <p>Methods</p> <p>The keywords "IPAQ", "validation", and "validity" were searched in PubMed and Scopus. Studies published in English that validated the IPAQ-SF against an objective physical activity measuring device, doubly labeled water, or an objective fitness measure were included.</p> <p>Results</p> <p>Twenty-three validation studies were included in this review. There was a great deal of variability in the methods used across studies, but the results were largely similar. Correlations between the total physical activity level measured by the IPAQ-SF and objective standards ranged from 0.09 to 0.39; none reached the minimal acceptable standard in the literature (0.50 for objective activity measuring devices, 0.40 for fitness measures). Correlations between sections of the IPAQ-SF for vigorous activity or moderate activity level/walking and an objective standard showed even greater variability (-0.18 to 0.76), yet several reached the minimal acceptable standard. Only six studies provided comparisons between physical activity levels derived from the IPAQ-SF and those obtained from objective criterion. In most studies the IPAQ-SF overestimated physical activity level by 36 to 173 percent; one study underestimated by 28 percent.</p> <p>Conclusions</p> <p>The correlation between the IPAQ-SF and objective measures of activity or fitness in the large majority of studies was lower than the acceptable standard. Furthermore, the IPAQ-SF typically overestimated physical activity as measured by objective criterion by an average of 84 percent. Hence, the evidence to support the use of the IPAQ-SF as an indicator of relative or absolute physical activity is weak.</p

Repeatability of self-report measures of physical activity, sedentary and travel behaviour in Hong Kong adolescents for the iHealt(H) and IPEN- adolescent studies

published_or_final_versio

A novel class of CoA-transferase involved in short-chain fatty acid metabolism in butyrate-producing human colonic bacteria

Peer reviewedPublisher PD

Study protocol for "Moving bright, eating smart"- a phase 2 clinical trial on the acceptability and feasibility of a diet and physical activity intervention to prevent recurrence in colorectal cancer survivors

Background: Colorectal cancer is the second most common cancer and cancer-killer in Hong Kong with an&nbsp;alarming increasing incidence in recent years. The latest World Cancer Research Fund report concluded that foods&nbsp;low in fibre, and high in red and processed meat cause colorectal cancer whereas physical activity protects againstcolon cancer. Yet, the influence of these lifestyle factors on cancer outcome is largely unknown even though&nbsp;cancer survivors are eager for lifestyle modifications. Observational studies suggested that low intake of a&nbsp;Western-pattern diet and high physical activity level reduced colorectal cancer mortality. The Theory of PlannedBehaviour and the Health Action Process Approach have guided the design of intervention models targeting a&nbsp;wide range of health-related behaviours.Methods/design: We aim to demonstrate the feasibility of two behavioural interventions intended to improve&nbsp;colorectal cancer outcome and which are designed to increase physical activity level and reduce consumption of a&nbsp;Western-pattern diet. This three year study will be a multicentre, randomised controlled trial in a 2x2 factorialdesign comparing the &ldquo;Moving Bright, Eating Smart&rdquo; (physical activity and diet) programme against usual care.&nbsp;Subjects will be recruited over a 12-month period, undertake intervention for 12 months and followed up for a&nbsp;further 12 months. Baseline, interim and three post-intervention assessments will be conducted.&nbsp;Two hundred and twenty-two colorectal cancer patients who completed curative treatment without evidence of&nbsp;recurrence will be recruited into the study. Primary outcome measure will be whether physical activity and dietary&nbsp;targets are met at the end of the 12-month intervention. Secondary outcome measures include the magnitude andmechanism of behavioural change, the degree and determinants of compliance, and the additional health benefits&nbsp;and side effects of the intervention.Discussion: The results of this study will establish the feasibility of targeting the two behaviours (diet and physical activity) and demonstrate the magnitude of behaviour change. The information will facilitate the design of a further&nbsp;larger phase III randomised controlled trial with colorectal cancer outcome as the study endpoint to determine&nbsp;whether this intervention model would reduce colorectal cancer recurrence and mortality

PROPEL: implementation of an evidence based pelvic floor muscle training intervention for women with pelvic organ prolapse: a realist evaluation and outcomes study protocol

Abstract Background Pelvic Organ Prolapse (POP) is estimated to affect 41%–50% of women aged over 40. Findings from the multi-centre randomised controlled “Pelvic Organ Prolapse PhysiotherapY” (POPPY) trial showed that individualised pelvic floor muscle training (PFMT) was effective in reducing symptoms of prolapse, improved quality of life and showed clear potential to be cost-effective. However, provision of PFMT for prolapse continues to vary across the UK, with limited numbers of women’s health physiotherapists specialising in its delivery. Implementation of this robust evidence from the POPPY trial will require attention to different models of delivery (e.g. staff skill mix) to fit with differing care environments. Methods A Realist Evaluation (RE) of implementation and outcomes of PFMT delivery in contrasting NHS settings will be conducted using multiple case study sites. Involving substantial local stakeholder engagement will permit a detailed exploration of how local sites make decisions on how to deliver PFMT and how these lead to service change. The RE will track how implementation is working; identify what influences outcomes; and, guided by the RE-AIM framework, will collect robust outcomes data. This will require mixed methods data collection and analysis. Qualitative data will be collected at four time-points across each site to understand local contexts and decisions regarding options for intervention delivery and to monitor implementation, uptake, adherence and outcomes. Patient outcome data will be collected at baseline, six months and one year follow-up for 120 women. Primary outcome will be the Pelvic Organ Prolapse Symptom Score (POP-SS). An economic evaluation will assess the costs and benefits associated with different delivery models taking account of further health care resource use by the women. Cost data will be combined with the primary outcome in a cost effectiveness analysis, and the EQ-5D-5L data in a cost utility analysis for each of the different models of delivery. Discussion Study of the implementation of varying models of service delivery of PFMT across contrasting sites combined with outcomes data and a cost effectiveness analysis will provide insight into the implementation and value of different models of PFMT service delivery and the cost benefits to the NHS in the longer term

Physical activity for cancer survivors: meta-analysis of randomised controlled trials

Objective To systematically evaluate the effects of physical activity in adult patients after completion of main treatment related to cancer

Reliability and validity of three questionnaires measuring context-specific sedentary behaviour and associated correlates in adolescents, adults and older adults

BACKGROUND: Reliable and valid measures of total sedentary time, context-specific sedentary behaviour (SB) and its potential correlates are useful for the development of future interventions. The purpose was to examine test-retest reliability and criterion validity of three newly developed questionnaires on total sedentary time, context-specific SB and its potential correlates in adolescents, adults and older adults. METHODS: Reliability and validity was tested in six different samples of Flemish (Belgium) residents. For the reliability study, 20 adolescents, 22 adults and 20 older adults filled out the age-specific SB questionnaire twice. Test-retest reliability was analysed using Kappa coefficients, Intraclass Correlation Coefficients and/or percentage agreement, separately for the three age groups. For the validity study, data were retrieved from 62 adolescents, 33 adults and 33 older adults, with activPAL as criterion measure. Spearman correlations and Bland-Altman plots (or non-parametric approach) were used to analyse criterion validity, separately for the three age groups and for weekday, weekend day and average day. RESULTS: The test-retest reliability for self-reported total sedentary time indicated following values: ICC = 0.37-0.67 in adolescents; ICC = 0.73-0.77 in adults; ICC = 0.68-0.80 in older adults. Item-specific reliability results (e.g. context-specific SB and its potential correlates) showed good-to-excellent reliability in 67.94%, 68.90% and 66.38% of the items in adolescents, adults and older adults respectively. All items belonging to sedentary-related equipment and simultaneous SB showed good reliability. The sections of the questionnaire with lowest reliability were: context-specific SB (adolescents), potential correlates of computer use (adults) and potential correlates of motorized transport (older adults). Spearman correlations between self-reported total sedentary time and the activPAL were different for each age group: rho = 0.02-0.42 (adolescents), rho = 0.06-0.52 (adults), rho = 0.38-0.50 (older adults). Participants over-reported total sedentary time (except for weekend day in older adults) compared to the activPAL, for weekday, weekend day and average day respectively by +57.05%, +46.29%, +53.34% in adolescents; +40.40%, +19.15%, +32.89% in adults; +10.10%, -6.24%, +4.11% in older adults. CONCLUSIONS: The questionnaires showed acceptable test-retest reliability and criterion validity. However, over-reporting of total SB was noticeable in adolescents and adults. Nevertheless, these questionnaires will be useful in getting context-specific information on SB