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Professor Timothy Olds 

Position: Professor Professor Timothy Olds
Division/Portfolio: Division of Health Sciences
School/Unit: School of Health Sciences
Group: SIHR HLS
Campus: City East Campus
Office: C7-41
Telephone: +61 8 830 21411
Fax:
Email: Timothy_dot_Olds_at_unisa_dot_edu_dot_au
URL for Business Card: http://people.unisa.edu.au/Timothy.Olds
(Timothy Olds is currently on leave - last day on leave is Friday, 12 December 2014)


Welcome to my homepage. I hope you find the information you need here. If not, why not send me an email?

"Everything flows"


Links to other sites



Health and Use of Time Group


Teaching interests

  • Statistics and computer applications in human movement
  • Applied exercise physiology
  • Anthropometry
  • Philosophy of human movement
  • Body image
  • Behavioural epidemiology

I teach the following courses

HLTH 3021Resistance Training
HLTH 3016Anthropometry and Body Image


Professional associations

Vice-President for Exercise Science, Australian Association for Exercise and Sports Science (AAESS) 1998-1999

Editor, Kinanthreport, International Society for the Advancement of Kinanthropometry (ISAK) 1997-

To link to the ISAK homepage, click here.

To download the latest Kinanthreport, click here.

Member of Sports Medicine Australia 2004- current

Member of the International Society for Physical Activity and Public Health 2010- current


Qualifications

BA Hon (Syd)- 1977

PhD (Syd)- 1984 Thesis topic: Le temps des signes. Réflexions sur la sémiotique

BSpSc Dist (UNSW)- 1992

PhD (UNSW)- 1997 Thesis topic: Mathematical modeling of cycling performance


Research interests

  • Mathematical modeling of sports performance
  • Anthropometry
  • Evolution of body size and shape
  • Evolution of fitness and fatness in children
  • Children's use of time

Research publications

My publications on Google Scholar

Ten Career Best

Matricciani, L., Olds, T. & Petkov, J. (In Press). In search of lost sleep. Secular trends in the sleep time of school-aged children and adolescents. Sleep Medicine Reviews.

Maher, C. & Olds, T. (2011). Minutes, MET minutes, and METs: unpacking socio-economic gradients in physical activity in adolescents. Journal of Epidemiology and Community Health, 65 (2), 160-165.

Norton, K.I. & Olds, T.S. (2001). Morphological evolution of athletes over the 20th century: causes and consequences. Sports Medicine, 31 9110, 763-783.

Olds, T.S., Maher, C. & Matricciani, L. (2011). Sleep duration or bedtime? Exploring the relationship between sleep habits and weight status and activity patterns. Sleep, 34 (10), 1299-1307.

Olds, T.S., Norton, K.I. & Craig, N.P. (1993). A mathematical model of cycling performance. Journal of Applied Physiology, 75, 730-739.

Olds, T.S., Norton, K.I., Lowe, E.L.A., Reay, F., Olive, S.C. & Ly, S.V. (1995). Modeling road cycling performance. Journal of Applied Physiology, 78 (4), 1596-1611.

Olds, T., Tomkinson, G., Léger, L. & Cazorla, G. (2006). Worldwide variation in the performance of children and adolescents: An analysis of 109 studies of the 20 m shuttle run test in 37 countries. Journal of Sports Sciences, 24 (10), 1025-1038.

Olds, T., Tomkinson, G., Maher, C. & Ferrar, K. (2010). Trends in the prevalence of childhood overweight and obesity in Australia between 1985 and 2008. International Journal of Obesity, 34 (1), 57-66.

Ridley, K. & Olds, T. (2008) Assigning energy costs to activities in children: a review and synthesis. Medicine and Science in Sports and Exercise, 40 (8), 1439-1446.

Tomkinson, G.R., Léger, L., Olds, T. & Cazorla, G. (2003). Secular trends in the fitness of children and adolescents 1980-2000- an analysis of 20 m shuttle runs studies. Sports Medicine, 33 (4), 385-400.

Scholarly Books

Marfell-Jones, M. & Olds, T. (Eds.) (2008). Kinanthropometry X. Routledge: London & New York.

Marfell-Jones, M., Olds, T., Stewart, A. & Carter, J.E.L. (Eds.) (2006). International Standards for Anthropometric Assessment. North-West University: Potchefstroom, RSA.

Marfell-Jones, M., Stewart, A. & Olds, T. (Eds.) (2006). Kinanthropometry IX, Proceedings of the 9th International Conference of the International Society for the Advancement of Kinanthropometry. Routledge: London & New York.

Tomkinson, G. & Olds, T. (Eds.) (2007). Pediatric Fitness: Secular Trends and Geographical Variability. Karger: Basel.

Scholarly Book Chapters

2010

Olds, T. & Maher, C. (2010). Global trends in childhood overweight and obesity in developed countries. In J. O’Dea, & M. Eriksen (Eds.). Childhood Obesity Prevention – International Research, Controversies and Interventions. Oxford University Press: Oxford.

Wilson, A., Dollman, J., Lushington, K., & Olds, T. (2010). Reliability of the 5 minute Psychomotor Vigilance Task in a primary school classroom setting. Behavior Research Methods, 42(3), 754-758.

Stewart, A.D., Benson, P.J., Olds, T., Marfell-Jones, M.J., MacSween, A. & Nevill, A.M. (2010). Self selection of athletes into sports via skeletal ratios. In: D.C. Lieberman (Ed.), Aerobic Exercise and Athletic Performance: Types, Duration and Health Benefits. Nova Science, New York.

Stewart, A., Olds, T. & Nevill, A.M. (2010). Prediction of body mass in elite Caucasian athletes from anthropometric measurements. In P.A. Hume & A.D. Stewart (Eds.), Kinanthropometry XI: 2008 Pre-Olympic Congress Anthropometry Research. Sport Performance Research Institute, Auckland University of Technology: Auckland, pp. 15-9.

2009

Olds, T. (2009). Anthropometry and body image. In R. Eston & T. Reilly (Eds.), Kinanthropometry and Exercise Physiology Laboratory Manual (3rd edition). Routledge: London & New York, pp. 233-49.

Olds, T.S. (2009). Body composition and sports performance. In R.J. Maughan (Ed.), The Olympic Textbook of Science in Sport. Wiley-Blackwell: Oxford, pp. 131-48.

Olds, T.S. & Tomkinson, G.R. (2009). Absolute body size. In T. Ackland (Ed.), Applied Anatomy and Biomechanics. Human Kinetics: Champaign, IL, pp. 29-46.

2008

Fraser, J. & Olds, T. (2008). Revising sizing: modifying clothing templates to match the 3D shape of real women. In M. Marfell-Jones and T. Olds (Eds.), Kinanthropometry X. Routledge: London, pp. 79-96.

Honey, F. & Olds, T. (2008). The Standards Australia sizing system: quantifying the mismatch. In M. Marfell-Jones and T. Olds (Eds.), Kinanthropometry X. Routledge: London, pp. 97-112.

Kupke, T. & Olds, T. (2008). Towards a generalised anthropometric language. In M. Marfell-Jones & T. Olds (Eds.), Kinanthropometry X. Routledge: London, pp. 213-30.

Olds, T., Ross, J., Blanchonette, P. & Stratton, D. (2008). Virtual anthropometry. In M. Marfell-Jones & T. Olds (Eds.), Kinanthropometry X. Routledge: London, pp. 25-38.

Tomkinson, G.R. & Olds, T.S. (2008). Field tests of fitness. In N. Armstrong and W. van Mechelen (Eds.), Paediatric Exercise Science and Medicine (2nd edition). Oxford University Press: Oxford, pp. 109-28.

2007

Dollman, J. & Olds, T. (2007). Distributional changes in the performance of Australian children on tests of cardio-respiratory endurance. In G. Tomkinson & T. Olds (Eds.), Pediatric Fitness. Secular Trends and Geographic Variability. Karger: Basel, pp. 210-25.

Olds, T., Ridley, K. & Tomkinson, G. (2007). Declines in aerobic fitness: are they only due to increasing fatness? In G. Tomkinson & T. Olds (Eds.), Pediatric Fitness. Secular Trends and Geographic Variability. Karger: Basel, pp. 226-40.

Tomkinson, G. & Olds, T. (2007). Secular trends in aerobic fitness test performance of Australasian children and adolescents. In G. Tomkinson & T. Olds (Eds.), Pediatric Fitness. Secular Trends and Geographic Variability. Karger: Basel, pp. 168-82.

Tomkinson, G.R. & Olds, T.S. (2007). Secular changes in aerobic fitness test performance: the global picture. In G. Tomkinson & T. Olds (Eds.), Pediatric Fitness. Secular Trends and Geographic Variability. Karger: Basel, pp. 46-66.

Tomkinson, G., Olds, T. & Borms, J. (2007). Who are the Eurofittest? In G. Tomkinson & T. Olds (Eds.), Pediatric Fitness: Se cular Trends and Geographical Variability. Karger: Basel, pp. 104-28.

2006

Olds, T. & Honey, F. (2006). The use of 3D whole-body laser scanners in anthropometry. In M. Marfell-Jones, T. Olds & A. Stewart (Eds.), Kinanthropometry IX. Routledge: London, pp. 1-14.

Refereed Journal Articles

In Press

Matricciani, L., Olds, T. & Petkov, J. (In Press). In search of lost sleep. Secular trends in the sleep time of school-aged children and adolescents. Sleep Medicine Reviews.

Ferrar, K., Olds, T., & Walters, J. (In Press). All the stereotypes confirmed: Differences in how Australian boys and girls use their time. Health Education & Behavior. Accepted for publication 26/08/2011.

Matricciani, L.A., Olds, T., Blunden, S., & Rigney, G. (In Press). Never enough sleep: a brief history of sleep recommendations for children. Pediatrics. Accepted for publication 10/11/2011.

Roydhouse, J., Allman-Farinelli, M., McGeechan, K., Ferrar, K., & Olds, T. (In Press). An exploratory analysis of active and low energy behaviour in Australian adolescents. Australian Journal of Primary Health Care. Accepted for publication 13/10/2011.

Olds, T., Ferrar, K., Gomersall, S.,R., Maher, C.A., & Walters, J. (In Press). The elasticity of time – associations between physical activity and use of time in adolescents. Health Education & Behavior. Accepted for publication 5/10/2011.

Ferrar, K.E., Olds, T.S., Maher, C.A., & Gomersall, S.r. (In Press). Social inequalities in health-related use of time in Australian adolescents. Australian and NZ Journal of Public Health. Accepted for publication 6 Jan 2012.

Williams, M., Petkov, J., Frith, P., & Olds, T. (In Press). A reduction in the use of volunteered descriptors of air hunger is associated with increased walking distance in people with COPD. Respiratory Care. Accepted for publication 22 Dec 2011.

Wiles, L., Olds, T., Williams, M., & Matricciani, L. (In Press). Sixty-five years of Physical Therapy: bibliometric analysis of research publications from 1945 through 2010. Physical Therapy. Accepted for publication 14 Dec 2011.

Maher, C., Kernot, J., & Olds, T. (In Press). Time use patterns in ambulatory adolescents with cerebral palsy. Child Care Health and Development. Accepted for publication 30 Oct 2011.

2012

Dollman, J., Maher, C., Ridley, K., & Olds, T. (2012). Physical activity and screen time behaviour in metropolitan, regional and rural adolescents: a cross-sectional study of Australians aged 9-16 years. Journal of Science and Medicine in Sport, 15(1), 32-37.

Lewis, L., Williams, M., & Olds, T. (2012). The active cycle of breathing technique: a systematic review and meta-analysis. Respiratory Medicine, 106(2), 155-172.

2011

Long, K., Williams, M., McEvoy, M., Wiles, L., & Olds, T. (2011). Entry-level evidence-based practice training in physiotherapy students; does it change knowledge, attitudes and behaviours? A longitudinal study. Internet Journal of Allied Health Sciences and Practice, 9(3), 1-11.

McEvoy, M.P.,Williams, M.T., Olds, T.S., Lewis, L.K., & Petkov, J. (2011). Evidence-based practice profiles of physiotherapists transitioning into the workforce: a study of two cohorts. BMC Medical Education. 11(1), 100-109.

Lewis, L.K., Williams, M.T., & Olds, T.S. (2011). Development and psychometric testing of an instrument to evaluate cognitive skills of evidence based practice in student health professionals. BMC Medical Education, 11, 77.

Maher, C. & Olds, T. (2011). Minutes, MET minutes, and METs: unpacking socio-economic gradients in physical activity in adolescents. Journal of Epidemiology and Community Health, 65 (2), 160-165.

Matricciani, L., Olds, T., & Williams, M. (2011). A review of evidence for the claim that children are sleeping less than in the past. Sleep, 34 (5), 651-659.

Olds, T., Maher, C., & Matricciani, L. (2011). Sleep duration or bedtime? Exploring the relationship between sleep habits and weight status and activity patterns. Sleep, 34(10), 1299-1307.

Olds, T., Maher, C., Aeberli, I., Bellisle, F., Castebon, K., de Wilde, J., Ellis, L., Hohepa, M., Hywell, D., Lioret, S., Lissner, L., Maddison, R., Mulhall, C. Ogden, Péneau, S., C.L., Shi, Z., Sjöberg, A., Summerbell, C., & Zimmermann, M. (2011). Evidence that the prevalence of childhood overweight is plateauing: data from nine countries. International Journal of Pediatric Obesity, 6(5-6), 342-360.

Olds, T., Maher, C., Ferrar, K., & Schranz, N. (2011). Obese adolescents are less active than their normal weight peers, but wherein lies the difference? Journal of Adolescent Health, 48(2), 189-195.

Olds, T.S., Maher, C.A. & Ridley, K. (2011). The place of physical activity in the time budgets of 10-13 year old Australian children. Journal of Physical Activity and Health, 8 (4), 548-557.

Olds, T., Maher, C., & Matricciani, L. (2011). Sleep duration or bedtime? Exploring the relationship between sleep habits and weight status and activity patterns. Sleep, 34(10), 1299-1307.

Stanley, R., Ridley, K., & Olds, T. (2011). The type and prevalence of activities performed by Australian children during the lunchtime and after school periods Journal of Science and Medicine in Sport, 14(3), 227-232.

Olds, T., Tomkinson, G., Maher, C., & Ferrar, K. (2011). Trends in the prevalence of childhood overweight and obesity in Australia between 1985 and 2008. Response [Letter]. International Journal of Obesity, 35(10), 1332-1333.

Tudor-Locke, C., Craig, C.L., Beets, M.W., Belton, S., Cardon, G.M., Duncan, S., Hatano, Y., Lubans, D.R., Olds, T.S., Raustorp, A., Rowe, D.A., Spence, J.C., Tanaka, S. & Blair, S.N. (2011). How many steps/day are enough? For children and adolescents. International Journal of Behavioral Nutrition and Physical Activity, 8, 78.

Gomersall, S., Olds, T., & Ridley, K. (2011). Development and evaluation of an adult use-of-time instrument with an energy expenditure focus. Journal of Science and Medicine in Sport, 14(2), 143-148.

Foley, LS., Maddison, R., Jiang, Y., Olds, T., & Ridley, K. (2011). It's not just the television: Survey analysis of sedentary behaviour in New Zealand young people. International Journal of Behavioral Nutrition and Physical Activity, 8, art. no 132.

2010

Daniell, N., Olds, T.S. & Tomkinson, G. (2010). The importance of site location in girth measurement. Journal of Sports Sciences, 28 (7), 751-757.

Dollman, J., Olds, T., Esterman, A. & Kupke, T. (2010). Pedometer step guidelines in relation to weight status among 5-16 year old Australians. Pediatric Exercise Science, 22, 288-300.

Ferrar, K., & Olds, T. (2010). Thin adolescents: Who are they? What do they do? Socio-demographic and use-of-time characteristics. Preventive Medicine, 51(3-4), 253-258.

Maher, C., Williams, M., Olds, T. & Lane, A. (2010). An internet-based physical activity intervention for adolescents with cerebral palsy – a randomised controlled trial. Developmental Medicine and Child Neurology, 52 (5), 448-455.

Mathers, M., Canterford, L., Olds, T., Waters, E. & Wake, M. (2010). Pet ownership and adolescent health: cross-sectional population study. Journal of Paediatrics and Child Health, 46 (12), 729-735.

McEvoy, M., Williams, M. & Olds, T. (2010). Development and psychometric testing of a trans-professional evidence based practice profile questionnaire. Medical Teacher, 32 (9), e366-e373.

McEvoy, M., Williams, M. & Olds, T. (2010). Evidence based practice profiles: Differences between allied health professionals. BMC Medical Education, 10 (1), art. 69.

Nevill, A.M., Stewart, A.D., & Olds, T. (2010). A simple explanation for the inverse association between height and waist in men. American Journal of Clinical Nutrition, 92(6), 1535.

Olds, T.S., Blunden, S., Dollman, J. & Maher, C. (2010). Day type and the relationship between weight status and sleep duration in children and adolescents. Australian and NZ Journal of Public Health, 34 (2), 165-71.

Olds, T.S., Blunden, S., Forchino, & Petkov, J. (2010). The relationships between sex, age, geography and time in bed in adolescents: a meta-analysis of data from 23 countries. Sleep Medicine Reviews, 14(6), 371-378.

Olds, T., Maher, C., Blunden, S., & Matricciani, L. (2010). Normative data on the sleep habits of Australian children and adolescents. Sleep, 33(10), 1381-1388.

Olds, T., Maher, C., Ridley, K., & Kittel, D. (2010). Descriptive epidemiology of screen and non-screen sedentary time in adolescents: a cross sectional descriptive study. International Journal of Behavioral Nutrition and Physical Activity, 7, art. 92.

Olds, T., Ridley, K., Dollman, J. & Maher, C. (2010). The validity of a computerised use of time recall, the Multimedia Activity Recall for Children and Adolescents. Pediatric Exercise Science, 22 (1), 34-43.

Olds, T., Tomkinson, G., Maher, C., & Ferrar, K. (2010). Trends in the prevalence of childhood overweight and obesity in Australia between 1985 and 2008. Response [Letter]. International Journal of Obesity, 34, 57-66.

Schranz, N., Tomkinson, G.R., Olds, T.S. & Daniell, N. (2010). Three-dimensional anthropometric analysis: differences between elite Australian rowers and the general population. Journal of Sports Sciences, 28 (5), 459-469.

Stewart, A.D., Benson, P.J., Olds, T., Marfell-Jones, M., MacSween, A. & Nevill, A.M. (2010). Self selection of athletes into sports via skeletal ratios. Journal of Contemporary Athletics, 5(2), 153-167.

Taylor, R.L., Olds, T., Boshoff, K. & Lane, A.E. (2010). Children's conceptualization of the term 'satisfaction': relevance for measuring health outcomes. Child: Care, Health and Development, 36 (5), 663-669.

Wiles, L., Williams, M. & Olds, T. (2010). Evidence base, quantitation and collaboration: three novel indices for bibliometric content analysis. Scientometrics, 85 (1), 317-328.

Williams, M., Cafarella, P., Olds, T., Petkov, J.P. & Frith, P. (2010). Affective descriptors of the sensation of breathlessness are more highly associated with severity of impairment than physical descriptors in people with chronic obstructive pulmonary disease. Chest, 138 (2), 315-322.

Wilson, A., Dollman, J., Lushington, K., & Olds, T. (2010). Reliability of the 5 minute Psychomotor Vigilance Task in a primary school classroom setting. Behavior Research Methods, 42 (3), 754-758.

2009

Mathers, M., Canterford, L., Olds, T., Hesketh, K., Ridley, K. & Wake, M. (2009). Electronic media use and adolescent health and well-being: cross-sectional community study. Academic Pediatrics, 9(5): 307-14.

Olds, T. (2009). One million skinfolds: secular trends in the fatness of young people 1951-2004. European Journal of Clinical Nutrition, 63(8): 934-46.

Olds, T., Dollman, J. & Maher, C. (2009). Adolescent sport in Australia: who, when, where and what? ACHPER Healthy Lifestyles Journal, 56(1): 11-6.

Olds, T., Wake, M., Patton, G., Ridley, K., Waters, E., Williams, J. & Hesketh, K. (2009). How do school-day activity patterns differ with age and sex across adolescence? Journal of Adolescent Health, 44(1): 64-72.

Ridley, K., Olds, T., Hands, B., Larkin, B. & Parker, H. (2009). Intra-individual variation in children’s physical activity patterns: implications for measurement. Journal of Science and Medicine in Sport, 12(5): 568-72.

Tsiros, M.D., Olds, T., Buckley, J., Grimshaw, P., Brennan, L., Walkley, J., Hills, A.P., Howe, P.R.C. & Coates, A.M. (2009). Health-related quality of life in obese children and adolescents. International Journal of Obesity, 33(4): 387-400.

2008

Harten, N., Olds, T. & Dollman, J. (2008). The effects of gender, motor skills and play area on the free play activities of 8 –11 year old school children. Health and Place, 14(3): 386-93.

Maher, C., Olds, T., Williams, M. & Lane, A. (2008). Self-reported quality of life in Australian adolescents with cerebral palsy. Physical & Occupational Therapy in Pediatrics, 28(1): 41-57.

Maher, C., Williams, M. & Olds, T. (2008). The six-minute walk test for children with cerebral palsy. International Journal of Rehabilitation Research, 31(2): 185-8.

Ridley, K., Ainsworth, B. & Olds, T. (2008). Development of a compendium of energy expenditures for youth. International Journal of Behavioral Nutrition and Physical Activity, 5: 45, published online Sep 10 2008.

Ridley, K. & Olds, T. (2008). Assigning energy costs to activities in children: a review and synthesis. Medicine and Science in Sports and Exercise, 40(8): 1439-46.

Williams, M., Cafarella, Olds, T., Petkov, J.P. & Frith, P. (2008). The language of breathlessness differentiates between patients with chronic obstructive pulmonary disease and age-matched adults. Chest, 134(3): 489-96.

2007

Dollman, J., Ridley, K., Olds, T. & Lowe, L. (2007). Trends in the duration of school-day sleep among 10-15 year old South Australians 1985-2004. Acta Paediatrica, 96(7): 1011-4.

Honey, F. & Olds, T. (2007). The Standards Australia sizing system: quantifying the mismatch. Journal of Fashion Marketing and Management, 11(3): 320-31.

Lewis, L., Williams, M. & Olds, T. (2007). Breathing control: short-term mechanical and physiological effects but insufficient evidence to support improvements in clinical outcomes: a systematic review. Australian Journal of Physiotherapy, 53(4): 219-23.

Maher, C., Williams, T., Olds, T. & Lane, A. (2007). Physical and sedentary activity in adolescents with cerebral palsy. Developmental Medicine and Child Neurology, 49(6): 450-7.

O’Connor, H., Olds, T. & Maughan, R. (2007). Physique and performance for track and field events. Journal of Sports Sciences, 25(S1): S49-60.

Olds, T., Ridley, K., Wake, M., Hesketh, K., Waters, E., Patton, G. & Williams, J. (2007). How should activity guidelines for young people be operationalised? International Journal of Behavioral Nutrition and Physical Activity, 4: 43, published online Sep 21 2007.

Olds, T., Ross, J., Blanchonette, P. & Stratton, D. (2007). Fitting the man to the machine: the ADAPT project. Australian Defence Force Journal, 172: 95-102.

Olds, T., Tomkinson, G., & Dollman, J. (2007). Secular trends in the skinfold thicknesses of young people in developed countries. Journal of Human Ecology (special issue), 15: 41-9.

Tomkinson, G.R., Olds, T.S., Kang, S.J. & Kim, D.Y. (2007). Secular trends in the aerobic fitness test performance and Body Mass Index of Korean children and adolescents (1968-2000). International Journal of Sports Medicine, 28(4): 314-20.

2006

Dollman, J. & Olds, T.S. (2006). Secular changes in fatness and fat distribution in Australian children matched for body size. International Journal of Pediatric Obesity, 1(2): 109-13.

Tomkinson, G.R., Hamlin, M.J. & Olds, T.S. (2006). Secular trends in anaerobic test performance in Australasian children and adolescents. Pediatric Exercise Science, 18(3): 314-28.

Nevill, A., Stewart, A., Olds, T. & Holder, R. (2006). The relationship between adiposity and body size reveals the limitations of BMI. American Journal of Physical Anthropology, 129(1): 151-6.

Olds, T.S., Ridley, K. & Dollman, J. (2006). Screenieboppers and extreme screenies: the place of screen time in the time budgets of 10-13 year old Australian children. Australian and New Zealand Journal of Public Health, 30(2): 137-42.

Olds, T., Tomkinson, G., Léger, L. & Cazorla, G. (2006). Worldwide variation in the performance of children and adolescents: an analysis of 109 studies of the 20 m shuttle run test in 37 countries. Journal of Sports Sciences, 24(10): 1025-38.

Ridley, K., Olds, T. & Hill, A. (2006). The Multimedia Activity Recall for Children and Adolescents (MARCA): development and evaluation. International Journal of Behavioral Nutrition and Physical Activity, 3(10), published online May 26 2006.


Expertise for Media Contact

I am able to provide media comment in the following areas of expertise:

Discipline: Exercise Science

  • Body size and shape
  • Children: fitness, fatness and physical activity
  • Body image
  • Mathematical modeling of sports
  • Exercise science

Research Degree Supervisor

Since obtaining my PhD in 1997, I have been involved in research into body image, anthropometry, mathematical modeling of cycling, the evolution of the fitness and fatness of children and sleep and use of time behaviours. I have/have had 17 PhD students to date.

Current Projects:

A randomised controlled trial assessing the effects of a school-based sleep intervention
 Children’s sleep duration has been decreasing in recent decades, and the average Australian child is not getting enough sleep for optimal well-being, health and social function. This study will use a randomised controlled trial to test the effect of a comprehensive sleep intervention delivered in a school setting.
Retirement activity planning: a randomised controlled trial
 Retirement is a life transition where use of time must be reconceptualised. Time use patterns (including time spent in physical activity and sedentary behaviours) are associated with physical and mental health outcomes in this demographic, so the restructuring process offers both risks and opportunities. This study will (a) survey longitudinal changes in patterns of time use, and (b) use a randomised controlled trial to assess the effects of pre-retirement activity exposure and planning on changes in time use and physical and psychosocial well-being.
Testing the Activitystat hypothesis
 Thisstudy will test the “activitystat” hypothesis, the concept that if physical activity in free-living humans is increased in one domain, there will be a compensatory decrease in another, thus maintaining an overall stable level of physical activity and energy expenditure.
The energy cost of children's activities
 This project aims to develop a multimedia activity recall diary for children, and to measure the child-specific energy costs of a wide range of activities.




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