Dr Jenna Hollis

Conjoint Lecturer

School of Health Sciences

Career Summary

Biography

Dr Jenna Hollis is investigating the predictors of maternal and child health at the MRC Lifecourse Unit, University of Southampton. The appointment is funded by an international Endeavour Research Fellowship from the Australian Government, funding I secured as chief investigator. This project has initiated an international collaboration between the University of Newcastle (Australia) and MRC Lifecourse Unit, University of Southampton (United Kingdom). We are examining data from the Southampton Women’s Survey (SWS) in the United Kingdom and the Australian Women And Their Children’s Health (WATCH) study. Through both of these cohorts we are investigating the dietary, physical activity and lifestyle risk factors that influence the health of women and their children, leading to feeding difficulties, overweight and obesity, and cardiovascular disease. Our findings will help researchers and health professionals to develop more targeted recommendations and support for expecting mothers during pregnancy, and for mothers and their children postpartum. 


Qualifications

  • Bachelor of Nutrition and Dietetics (Honours), University of Newcastle

Keywords

  • children's health
  • nutrition
  • obesity prevention
  • public health
  • women's health

Fields of Research

Code Description Percentage
111799 Public Health and Health Services not elsewhere classified 100

Professional Experience

UON Appointment

Title Organisation / Department
Casual Academic University of Newcastle
School of Health Sciences
Australia

Academic appointment

Dates Title Organisation / Department
1/11/2015 -  Endeavour Research Fellow

Dr Jenna Hollis is investigating the predictors of maternal and child health at the MRC Lifecourse Unit, University of Southampton. The appointment is funded by an international Endeavour Research Fellowship from the Australian Government, funding she secured as chief investigator. This project has initiated an international collaboration between the University of Newcastle (Australia) and MRC Lifecourse Unit, University of Southampton (United Kingdom). She is examining data from the Southampton Women’s Survey (SWS) in the United Kingdom and the Australian Women And Their Children’s Health (WATCH) study. Through both of these cohorts we are investigating the dietary, physical activity and lifestyle risk factors that influence the health of women and their children, leading to feeding difficulties, overweight and obesity, and cardiovascular disease. Our findings will help researchers and health professionals to develop more targeted recommendations and support for expecting mothers during pregnancy, and for mothers and their children postpartum. 

University Hospital Southampton and the University of Southampton
MRC Lifecourse Epidemiology Unit
United Kingdom
1/10/2014 - 1/11/2015 Research Fellow in Public Health Nutrition

  • Evaluated simplified methods of monitoring the progress of the diet of the population in Scotland against the Eatwell Plate. I was responsible for data entry, statistical analysis, and writing the results in to two papers: i) assessing the validity of the Scottish Collaborative Group Food Frequency Questionnaire in measuring dietary intake in adults, and ii) estimating compliance with plate-based recommendations in adults living in Scotland using short dietary assessment questionnaires.
  • I analysed food purchasing patterns by region and socioeconomic status across Scotland to address the relationship between diet, food availability and affordability. This was conducted using the Kantar Worldpanel Survey of household food purchases linked to the Scottish Neighbourhood Statistics. I assisted with data collation, statistical analysis, and writing the results in to a paper exploring whetheriii) socio-economic disadvantage and region predict compliance to the Scottish Dietary Goals.

University of Aberdeen
Rowett Institute of Nutrition and Health
United Kingdom
1/02/2014 - 1/10/2014 Postdoctoral Researcher

Research and responsibilities:

  • Conducted two systematic reviews and meta-analyses to examine moderate-to-vigorous physical activity levels in i) elementary and ii) secondary school physical education lessons. I developed the systematic review protocols, led the abstract and full text review, conducted risk of bias assessments and data extraction, and drafted the findings in to two manuscripts.
  • Wrote a manuscript reporting the 24-month adiposity outcomes (weight, BMI, BMI z-score) of the ‘Physical Activity for Everyone ‘(PA4E1) RCT. PA4E1 is a multi-component physical activity intervention that aimed to prevent the decline in physical activity in 10 economically disadvantaged secondary school students (n=1150).
  • Liaised with research groups and local schools to coordinate focus groups for PA4E1 intervention students and physical education teachers.
  • Assisted in writing a National Health and Medical Research Council (NHMRC) Partnership Grant Application for a physical activity intervention in secondary schools.

University of Newcastle, Australia
Hunter New England Local Health District Population Health
Australia

Awards

Award

Year Award
2012 Nomination for ANZOS 2012: Elsevier Awards for Best Paper in Obesity Research
ANZOS

Scholarship

Year Award
2012 ANZOS Conference Travel Scholarship
ANZOS
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (13 outputs)

Year Citation Altmetrics Link
2016 Sutherland RL, Campbell EM, Lubans DR, Morgan PJ, Nathan NK, Wolfenden L, et al., 'The Physical Activity 4 Everyone Cluster Randomized Trial: 2-Year Outcomes of a School Physical Activity Intervention Among Adolescents.', Am J Prev Med, 51 195-205 (2016)
DOI 10.1016/j.amepre.2016.02.020
Co-authors Philip Morgan, John Wiggers, David Lubans, Luke Wolfenden, Christopher Oldmeadow
2016 Hollis JL, Williams AJ, Sutherland R, Campbell E, Nathan N, Wolfenden L, et al., 'A systematic review and meta-analysis of moderate-to-vigorous physical activity levels in elementary school physical education lessons', Preventive Medicine, 86 34-54 (2016) [C1]

© 2015 Elsevier Inc.Objective: To examine elementary school students' moderate-to-vigorous physical activity (MVPA) levels during physical education (PE) lessons. Methods: A syst... [more]

© 2015 Elsevier Inc.Objective: To examine elementary school students' moderate-to-vigorous physical activity (MVPA) levels during physical education (PE) lessons. Methods: A systematic search of nine electronic databases was conducted (PROSPERO2014:CRD42014009649). Studies were eligible if they were in English; published between 2005-April 2014; assessed MVPA levels in PE lessons of elementary school children (aged four-12 years); and used an objective MVPA measure. Two reviewers retrieved articles, assessed risk of bias, and performed data extraction. The findings were synthesised using a meta-analysis. Results: The search yielded 5132 articles. Thirteen studies from nine countries met the inclusion criteria. Eight studies measured MVPA through observational measures, five used accelerometry and one used heart rate monitoring. The percentage of PE lesson time spent in MVPA ranged between 11.4-88.5%. Meta-analysis of seven studies (direct observations; 4 accelerometers) found that children spent a mean (95% CI) 44.8 (28.2-61.4)% of PE lesson time in MVPA. When measured using direct observation and accelerometers, children spent 57.6 (47.3-68.2) and 32.6 (5.9-59.3)% of PE lesson time in MVPA, respectively. The review has limitations; the search strategy was restricted to studies in English; theses, dissertations and conference abstracts were excluded; and six studies that provided insufficient data were excluded from the meta-analysis. Conclusion: MVPA levels during elementary school PE lessons do not meet the United States Centre for Disease Control and Prevention and the United Kingdom's Association of Physical Education recommendation (50% of lesson time), but is higher than estimated in the previous review (34.2%). Interventions to increase MVPA in PE lessons are needed.

DOI 10.1016/j.ypmed.2015.11.018
Citations Scopus - 2Web of Science - 2
Co-authors Philip Morgan, John Wiggers, David Lubans, Luke Wolfenden
2016 Morgan PJ, Hollis JL, Young MD, Collins CE, Teixeira PJ, 'Workday Sitting Time and Marital Status: Novel Pretreatment Predictors of Weight Loss in Overweight and Obese Men.', Am J Mens Health, (2016)
DOI 10.1177/1557988316654866
Co-authors Myles Young, Philip Morgan
2016 Hollis JL, Sutherland R, Campbell L, Morgan PJ, Lubans DR, Nathan N, et al., 'Effects of a 'school-based' physical activity intervention on adiposity in adolescents from economically disadvantaged communities: secondary outcomes of the 'Physical Activity 4 Everyone' RCT.', Int J Obes (Lond), 40 1486-1493 (2016)
DOI 10.1038/ijo.2016.107
Citations Scopus - 1
Co-authors John Wiggers, Luke Wolfenden, Philip Morgan, David Lubans, Christopher Oldmeadow
2016 Hollis JL, Crozier SR, Inskip HM, Cooper C, Godfrey KM, Robinson SM, 'Age at introduction of solid foods and feeding difficulties in childhood: findings from the Southampton Women¿s Survey', British Journal of Nutrition, 116 743-750 (2016)
DOI 10.1017/S0007114516002531
2016 Sutherland R, Campbell E, Lubans DR, Morgan PJ, Okely AD, Nathan N, et al., ''Physical activity 4 everyone' school-based intervention to prevent decline in adolescent physical activity levels: 12 month (mid-intervention) report on a cluster randomised trial', British Journal of Sports Medicine, 50 488-495 (2016) [C1]

Background: Adolescence is a recognised period of physical activity decline, particularly among low-income communities. We report the 12-month (midpoint) effects of a 2-year multi... [more]

Background: Adolescence is a recognised period of physical activity decline, particularly among low-income communities. We report the 12-month (midpoint) effects of a 2-year multicomponent physical activity intervention implemented in disadvantaged secondary schools. Methods: A cluster randomised trial was undertaken in 10 secondary schools located in disadvantaged areas in New South Wales, Australia. Students in Grade 7 were recruited, with follow-up in Grade 8. The intervention was guided by socioecological theory and included seven physical activity strategies, and six implementation adoption strategies. The primary outcome was mean minutes of moderate-to-vigorous physical activity (MVPA) per day assessed using Actigraph GT3X accelerometers. Outcome data were analysed using repeated measures linear mixed models. Results: At baseline, 1150 (93%) students participated in the data collection (mean age 12 years, 48% boys) and 1050 (79%) students participated at 12-month follow-up. By the 12-month follow-up, the six implementation adoption strategies had been used to support schools to deliver four of the seven physical activity elements. There was a significant group-by-time interaction for mean minutes of MVPA per day in favour of the intervention group (adjusted difference between groups at follow-up=3.85 min, 95% CI (0.79 to 6.91), p=0.01), including significantly more vigorous physical activity (2.45 min, p=0.01), equating to 27 min more MVPA per week. Summary: At 12-month follow-up, the intervention had reduced the decline in physical activity among adolescents from disadvantaged schools. The intervention may assist students to meet physical activity guidelines.

DOI 10.1136/bjsports-2014-094523
Citations Scopus - 2Web of Science - 1
Co-authors David Lubans, John Wiggers, Philip Morgan, Luke Wolfenden
2015 Hollis JL, Williams LT, Morgan PJ, Collins CE, 'The 40-Something Randomised Controlled Trial improved fruit intake and nutrient density of the diet in mid-age women', Nutrition and Dietetics, (2015) [C1]

© 2015 Dietitians Association of Australia. Aim: The 40-Something Randomised Controlled Trial (RCT) aimed to determine if a 12-month health professional-led intervention could im... [more]

© 2015 Dietitians Association of Australia. Aim: The 40-Something Randomised Controlled Trial (RCT) aimed to determine if a 12-month health professional-led intervention could improve dietary intake and increase physical activity for weight gain prevention in non-obese premenopausal women. Methods: Fifty-four women were randomised to a motivational interviewing intervention (MI) (n = 28; five health professional consultations) or a self-directed intervention (SDI; n = 26; written advice). Weight control behaviours including dietary intake (four-day weighed food record) and physical activity (pedometer steps; minutes spent in light, moderate and vigorous activity; sitting time) were measured at baseline, and at 3 and 12 months. Participants completed a questionnaire containing demographic questions, Short Form 36 and the International Physical Activity Questionnaire at baseline and 12 months. Linear mixed model analyses adjusting for baseline and 3-month behaviour, covariates and interactions were used to test for between-group differences. Results: At 12 months, the MI group had diets significantly more nutrient dense in iron (P = 0.01) and potassium (P = 0.04), and consumed more fruits (P = 0.02) than the SDI women. Women who achieved their weight control goals consumed significantly more daily fruit servings (+0.76 servings/day, P = 0.02) and less meat/meat alternatives (-0.34 servings/day, P < 0.01) than women who did not achieve weight control. The lack of changes in physical activity indicates that more emphasis may need to be placed on promoting physical activity. Conclusions: The findings demonstrated the effectiveness of the 40-Something RCT in improving iron and potassium nutrient density and fruit servings per day in women soon to commence menopause.

DOI 10.1111/1747-0080.12215
Citations Scopus - 1Web of Science - 1
Co-authors Clare Collins, Philip Morgan, Lauren Williams
2015 Jones J, Wyse R, Finch M, Lecathelinais C, Wiggers J, Marshall J, et al., 'Effectiveness of an intervention to facilitate the implementation of healthy eating and physical activity policies and practices in childcare services: a randomised controlled trial', IMPLEMENTATION SCIENCE, 10 (2015) [C1]
DOI 10.1186/s13012-015-0340-z
Citations Scopus - 2Web of Science - 2
Co-authors Tara Clinton-Mcharg, Serene Yoong, John Wiggers, Luke Wolfenden, Rebecca Wyse
2014 Williams LT, Hollis JL, Collins CE, Morgan PJ, 'Can a relatively low-intensity intervention by health professionals prevent weight gain in mid-age women? 12-Month outcomes of the 40-Something randomised controlled trial.', Nutrition & diabetes, 4 e116 (2014) [C1]
Citations Scopus - 8Web of Science - 7
Co-authors Lauren Williams, Philip Morgan, Clare Collins
2014 Hollis JL, Williams LT, Young MD, Pollard KT, Collins CE, Morgan PJ, 'Compliance to step count and vegetable serve recommendations mediates weight gain prevention in mid-age, premenopausal women. Findings of the 40-Something RCT.', Appetite, 83 33-41 (2014) [C1]
Citations Scopus - 3Web of Science - 2
Co-authors Myles Young, Lauren Williams, Philip Morgan, Clare Collins
2014 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'Does Motivational Interviewing Align with International Scope of Practice, Professional Competency Standards, and Best Practice Guidelines in Dietetics Practice?', JOURNAL OF THE ACADEMY OF NUTRITION AND DIETETICS, 114 676-687 (2014) [C2]
DOI 10.1016/j.jand.2013.12.023
Citations Scopus - 4Web of Science - 3
Co-authors Lauren Williams, Philip Morgan, Clare Collins
2013 Williams LT, Hollis JL, Collins CE, Morgan PJ, 'The 40-Something randomized controlled trial to prevent weight gain in mid-age women', BMC Public Health, 13 (2013) [C1]
DOI 10.1186/1471-2458-13-1007
Citations Scopus - 4Web of Science - 2
Co-authors Philip Morgan, Clare Collins, Lauren Williams
2012 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'Effectiveness of interventions using Motivational Interviewing for dietary and physical activity modification in adults: A systematic review', The JBI Database of Systematic Reviews and Implementation Reports, 10 S1-S12 (2012) [C3]
Co-authors Clare Collins, Lauren Williams, Philip Morgan
Show 10 more journal articles

Conference (10 outputs)

Year Citation Altmetrics Link
2013 Hollis JL, Williams LT, Collins CE, Morgan PJ, McElduff P, 'Physical activity as a mediator of weight loss in mid­-age women: mediation analysis of the 40-­Something RCT', 2013 Annual Meeting of the International Society for Behavioral Nutrition and Physical Activity (ISBNPA) eProceedings (2013) [E3]
Co-authors Philip Morgan, Lauren Williams, Clare Collins
2013 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'A health professional intervention can increase vigorous physical activity in mid-­age women at 12 months: results from the 40-­Something RCT', 2013 Annual Meeting of the International Society for Behavioral Nutrition and Physical Activity (ISBNPA) eProceedings (2013) [E3]
Co-authors Clare Collins, Lauren Williams, Philip Morgan
2013 Williams L, Hollis J, Collins CE, Morgan PJ, 'Can a relatively low intensity, Motivational Interviewing based intervention prevent weight gain in mid-age women? Outcomes of the 40-Something RCT', Nutrition and Dietetics (2013) [E3]
Co-authors Clare Collins, Philip Morgan
2013 Hollis J, Williams L, Collins CE, Morgan PJ, 'A health professional motivational interviewing intervention is an acceptable and feasible weight gain prevention treatment for mid-age women: process evaluation results from the 40-Something RCT', The Australian New Zealand Obesity Society Annual Scientific Meeting 2013 Abstracts (2013) [E3]
Co-authors Philip Morgan, Lauren Williams, Clare Collins
2012 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'Use of motivational enhancement therapy in a dietitian-led intervention results in decreased energy and fat intake: Behaviour change results from the 40-something RCT', Nutrition & Dietetics: Special Issue: Dietitians Association of Australia 16th International Congress of Dietetics (2012) [E3]
Co-authors Lauren Williams, Clare Collins, Philip Morgan
2012 Williams LT, Palmer MA, Hollis JL, MacDonald-Wicks LK, Baines SK, Hutchesson MJ, Collins CE, 'Systematic review updating the evidence of the effect of diet therapy combined with behavioural and/or psychological therapies compared to diet therapy alone for the treatment of overweight and obesity in adults', Nutrition & Dietetics: Special Issue: Dietitians Association of Australia 16th International Congress of Dietetics (2012) [E3]
Co-authors Melinda Hutchesson, Lauren Williams, Clare Collins, Surinder Baines, Lesley Wicks
2012 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'Effectiveness of interventions using motivational interviewing for physical activity and dietary modification in adults: A systematic review', Obesity Research & Clinical Practice (2012) [E3]
Co-authors Philip Morgan, Lauren Williams, Clare Collins
2011 Williams LT, Hollis JL, McQualter KA, Collins CE, Morgan PJ, 'Can an intervention in mid-age women prevent weight gain associated with menopause? Data from the 40-Something Study', 2011 Annual Meeting of the International Society for Behavioral Nutrition and Physical Activity (ISBNPA) eProceedings (2011) [E3]
Co-authors Philip Morgan, Clare Collins, Lauren Williams
2011 Hollis JL, Williams LT, Collins CE, Morgan PJ, 'The application of motivational interviewing to a weight control intervention for mid age women: The 40-something study', Nutrition and Dietetics: Dietitians Association of Australia 29th National Conference Poster Abstracts (2011) [E3]
Co-authors Lauren Williams, Clare Collins, Philip Morgan
2011 Williams LT, Hollis JL, Collins CE, Morgan PJ, 'Can a weight gain prevention intervention in mid-age women prevent development of metabolic syndrome usually associated with menopause? The 40-something study', Nutrition and Dietetics: Dietitians Association of Australia 29th National Conference Poster Abstracts (2011) [E3]
Co-authors Philip Morgan, Clare Collins, Lauren Williams
Show 7 more conferences
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Grants and Funding

Summary

Number of grants 5
Total funding $127,000

Click on a grant title below to expand the full details for that specific grant.


20151 grants / $23,000

Endeavour Research Fellowship$23,000

Funding body: Australian Government

Funding body Australian Government
Scheme Endeavour Mobility Program
Role Lead
Funding Start 2015
Funding Finish 2016
GNo
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON N

20141 grants / $1,000

Research Higher Degree Completion Scholarship$1,000

Funding body: The University of Newcastle

Funding body The University of Newcastle
Scheme RHD
Role Lead
Funding Start 2014
Funding Finish 2015
GNo
Type Of Funding Internal
Category INTE
UON N

20121 grants / $14,000

Hunter Medical Research Institute Barker Scholarship$14,000

Funding body: Hunter Medical Research Institute (HMRI)

Funding body Hunter Medical Research Institute (HMRI)
Scheme Barker Scholarship
Role Lead
Funding Start 2012
Funding Finish 2013
GNo
Type Of Funding Not Known
Category UNKN
UON N

20111 grants / $5,000

Priority Research Council (PRC) in Physical Activity and Nutrition Seed Grant Funding $5,000

Funding body: Priority Research Centre for Physical Acivity and Nutrition

Funding body Priority Research Centre for Physical Acivity and Nutrition
Scheme Seed Funding
Role Lead
Funding Start 2011
Funding Finish 2012
GNo
Type Of Funding Not Known
Category UNKN
UON N

20101 grants / $84,000

Australian Postgraduate Award $84,000

Funding body: Australian Government

Funding body Australian Government
Scheme PhD Scholarship
Role Lead
Funding Start 2010
Funding Finish 2014
GNo
Type Of Funding Not Known
Category UNKN
UON N
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Research Supervision

Number of supervisions

Completed3
Current0

Past Supervision

Year Level of Study Research Title / Program / Supervisor Type
2016 Masters Do mothers understand the term 'exclusive breastfeeding'? A systematic review
Public Health, University of Aberdeen
Principal Supervisor
2014 Honours Community Placement at Hunter New England Population Health
Nutrition & Dietetics, Hunter New England Population Health
Sole Supervisor
2012 Honours The ability of mid-age women to comply with weight gain prevention recommendations as part of a randomised control trial intervention
Nutrition & Dietetics, The University of Newcastle - Faculty of Health and Medicine
Sole Supervisor
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Research Projects

Contributed to a Massive Open Online Course (MOOC) on Nutrition and Wellbeing developed by the Rowett Institute of Nutrition and Health and University of Aberdeen 2015 - 2016

I developed and presented a segment/lecture on food and nutrition labelling for the Rowett Institute of Nutrition and Health and University of Aberdeen MOOC. The free online course was run over four weeks from 17th August 2015 (and rerun from 18th January 2016) and had 46,562 enrolled participants. I was also engaged in the online forum to generate discussion and answer questions.


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Dr Jenna Hollis

Positions

Conjoint Lecturer
School of Health Sciences
Faculty of Health and Medicine

Casual Academic
School of Health Sciences
Faculty of Health and Medicine

Contact Details

Email jenna.hollis@newcastle.edu.au
Phone (02) 4924 6496
Fax (02) 4924 6490

Office

Room Room 69
Building Hunter New England Local Health District Population Health
Location Wallsend

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