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High fish consumption may be associated with lower inflammation, suppressing atherosclerotic CVD (ASCVD). Long sleep duration, as well as short sleep, may contribute to inflammation, thus facilitating ASCVD. This study investigated the overall association between fish consumption, sleep duration and leucocytes count. We conducted a cross-sectional study between April 2019 and March 2020 with a cohort of 8947 apparently healthy participants with no history of ASCVD (average age, 46·9 ± 12·3 years and 59 % males). The average frequency of fish consumption and sleep duration were 2·13 ± 1·26 d/week and 6·0 ± 0·97 h/d. Multivariate linear regression analysis revealed that increased fish consumption was an independent determinant of sleep duration (β = 0·084, P < 0·0001). Additionally, habitual aerobic exercise (β = 0·059, P < 0·0001) or cigarette smoking (β = −0·051, P < 0·0001) and homoeostasis model assessment-insulin resistance (HOMA-IR) (β = −0·039, P = 0·01) were independent determinants of sleep duration. Furthermore, multivariate linear regression analysis identified fish consumption as an independent determinant of leucocytes count (β = −0·091, P < 0·0001). However, a significant U-shaped curve was found between leucocytes count and sleep duration, with 6–7 h of sleep as the low value (P = 0·015). Higher fish consumption may be associated with a lower leucocytes count in the presence of adequate sleep duration and healthy lifestyle behaviors. However, long sleep duration was also related to increased inflammation, even in populations with high fish consumption. Further studies are needed to clarify the causality between these factors.
Nutritional interventions often rely on subjective assessments of energy intake (EI), but these are susceptible to measurement error. To introduce an accelerometer-based intake-balance method for assessing EI using data from a time-restricted eating (TRE) trial. Nineteen participants with overweight/obesity (25–63 years old; 16 females) completed a 12-week intervention (NCT03129581) in a control group (unrestricted feeding; n 8) or TRE group (n 11). At the start and end of the intervention, body composition was assessed by dual-energy X-ray absorptiometry (DXA) and daily energy expenditure (EE) was assessed for 2 weeks via wrist-worn accelerometer. EI was back-calculated as the sum of net energy storage (from DXA) and EE (from accelerometer). Accelerometer-derived EI estimates were compared against estimates from the body weight planner of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Mean EI for the control group declined by 138 and 435 kJ/day for the accelerometer and NIDDK methods, respectively (both P ≥ 0·38), v. 1255 and 1469 kJ/day, respectively, for the TRE group (both P < 0·01). At follow-up, the accelerometer and NIDDK methods showed excellent group-level agreement (mean bias of −297 kJ/day across arms; standard error of estimate 1054 kJ/day) but high variability at the individual level (limits of agreement from −2414 to +1824 kJ/day). The accelerometer-based intake-balance method showed plausible sensitivity to change, and EI estimates were biologically and behaviourally plausible. The method may be a viable alternative to self-report EI measures. Future studies should assess criterion validity using doubly labelled water.
The aim was to develop, refine and assess the usefulness of the Go for Green® (G4G) 2.0 Program Fidelity Assessment (PFA) tool. G4G 2.0 is a Department of Defense programme designed to optimise access, availability and knowledge of high-performance nutritious foods in military dining facilities (DFAC).
Design:
During a multi-site study to evaluate G4G 2.0 on meal quality and diner satisfaction, subject matter experts developed and refined a PFA tool based on eight programme requirements (PR). They identified tasks critical to programme success and corresponding benchmarks, then proposed expansion of several PR and developed a scoring system to assess adherence. Three PFA were conducted (Site 1, Site 2A and Site B).
Setting:
Two DFAC in the USA implementing the G4G 2.0 programme.
Participants:
Military DFAC participating in a G4G 2.0 evaluation study.
Results:
After G4G 2.0 implementation, Site 1 conducted a PFA and met benchmarks for eight of fifteen sections. At Site 2, a PFA was conducted after G4G 2.0 implementation (Site 2A) and one 3 months later (Site 2B) with twelve of fifteen and ten of fifteen sections meeting benchmarks, respectively.
Conclusion:
Research highlights the need to maximise implementation quality to ensure interventions are effective, achievable and efficient. Using a PFA tool to objectively assess nutrition interventions can inform programme fidelity, successes and opportunities for improvement. Results identify key areas that require additional training and resources to optimise access to nutrient-dense foods that support nutritional fitness. This feedback is critical for assessing potential programme impact on Service Members.
The regulation of health claims for foods by the Nutrition and Health Claims Regulation is intended, primarily, to protect consumers from unscrupulous claims by ensuring claims are accurate and substantiated with high quality scientific evidence. In this position paper, the Academy of Nutrition Sciences uniquely recognises the strengths of the transparent, rigorous scientific assessment by independent scientists of the evidence underpinning claims in Europe, an approach now independently adopted in UK. Further strengths are the separation of risk assessment from risk management, and the extensive guidance for those submitting claims. Nevertheless, four main challenges in assessing the scientific evidence and context remain: (i) defining a healthy population, (ii) undertaking efficacy trials for foods, (iii) developing clearly defined biomarkers for some trial outcomes and (iv) ensuring the composition of a food bearing a health claim is consistent with generally accepted nutrition principles. Although the Regulation aims to protect the consumer from harm, we identify some challenges from consumer research: (i) making the wording of some health claims more easily understood and (ii) understanding the implications of the misperceptions around products bearing nutrition or health claims. Recommendations are made to overcome these challenges. Further, the Academy recommends that a dialogue is developed with the relevant national bodies about Article 12(c) in the Regulation. This should further clarify the GB Guidance to avoid the current non-level playing field between health professionals and untrained ‘influencers’ who are not covered by this Article about the communication of authorised claims within commercial communications.
Vitamin D is both a nutrient and a neurologic hormone that plays a critical role in modulating immune responses. While low levels of vitamin D are associated with increased susceptibility to infections and immune-related disorders, vitamin D supplementation has demonstrated immunomodulatory effects that can be protective against various diseases and infections. Vitamin D receptor is expressed in immune cells that have the ability to synthesise the active vitamin D metabolite. Thus, vitamin D acts in an autocrine manner in a local immunologic milieu in fighting against infections. Nutrigenetics and nutrigenomics are the new disciplines of nutritional science that explore the interaction between nutrients and genes using distinct approaches to decipher the mechanisms by which nutrients can influence disease development. Though molecular and observational studies have proved the immunomodulatory effects of vitamin D, only very few studies have documented the molecular insights of vitamin D supplementation. Until recently, researchers have investigated only a few selected genes involved in the vitamin D metabolic pathway that may influence the response to vitamin D supplementation and possibly disease risk. This review summarises the impact of vitamin D supplementation on immune markers from nutrigenetics and nutrigenomics perspective based on evidence collected through a structured search using PubMed, EMBASE, Science Direct and Web of Science. The research gaps and shortcomings from the existing data and future research direction of vitamin D supplementation on various immune-related disorders are discussed.
Why did South Africa and the Kruger National Park (KNP) in particular not become a major early locus for African wildlife filmmaking? Why was the most visited and best-known African wildlife reserve, the place which probably drew more tourists than the rest of the continent’s wildlife reserves combined, not the continent’s first and most prominent locale for wildlife filming?
A first obvious point is that the KNP is in many ways a difficult place to see animals and to film them – at least compared to the savannahs of East Africa, or the waterholes of Etosha. The road network for tourists covers only a small part of the total surface of the park and limits access to most of the park. Trees block views and animals can disappear easily. For most of this period, almost all of the park was closed for the summer months because of dangers of contracting malaria. Anybody filming animals is likely to be disturbed by other tourists viewing or vying for good viewing spots. The Kruger Park also has obvious signs of human shaping: roads, rest-camps, telephone wires and fences. These too may have discouraged filmmakers looking to create an illusion of an untouched wilderness.
A neat example of the problems filmmakers faced and the ways they tried to liven up footage could be found in a French television news item aired on the 1 July 1954, with the title ‘Sans Barreaux’ or without bars. In this insert, reporter Jean Hudelot is shown entering the park at an entrance gate. Animals are photographed from the car window. A sleeping lion is roused by the reporter banging on the car to wake him up. Inserted in this is a sequence of the intrepid reporter hiding behind some bushes to view the game and then moving fast back to his car. One scrupulous editor somewhere annotated the sequence: some scenes were shot in the Bois du Boulogne! Clearly a series of shots of a rather portly reporter in a car and animals rather more distant than they would be in a zoo were not felt to be entertaining enough, and the journalist or editor in Paris decided to add drama by having the reporter out of the car.
Carol Hughes, eventually perhaps habituated enough to trust me with a major revelation, one day said her husband David’s mantra was: ‘Not the BBC’. Why, given some of his most important films were made for them and that he had in part been trained by them, and given the general esteem in which the BBC’s Natural History Unit (NHU) and David Attenborough are held, might he have seen them as a negative principle? To understand the distinctive strengths of Southern African wildlife documentaries, it is useful to extract some of the NHU’s key operating principles as they were at once the source of its distinctive achievements but also point to some of their weaknesses and to the niches in the wildlife ecosphere the Southern Africans tried to fill.
The NHU
The histories of the BBC’s Natural History Unit examined earlier (Bright, Davies, Gouyon, Louson) illustrate the strengths of this institution but also suggest its corollary weaknesses. As I argued earlier, the weakness of the accounts of the NHU is both theoretical and historical in that they try to extract the NHU from the larger competitive broadcasting and production contexts. To try to write the history of the NHU without looking at what other broadcasters were doing or who was winning the ratings wars or industry accolades is to miss the way in which the field (to invoke Bourdieu) was developing and changing.
Let us put aside the greater home audience for most US productions and note that for much of the past half century, the NHU was not even the dominant wildlife broadcaster in the UK. Survival, with a strong component of Southern African material and with a South African born producer Mike Hay, was drawing much larger audiences (Gouyon 2019, 116). Partridge, as Davies pointed out, won the big competition prizes for most of the 1980s. And it didn’t stop there. Ellen Windemuth recalls in 2000 walking to collect the Golden Panda for the Foster brothers’ The Great Dance past rows of shocked BBC figures. If that didn’t happen in 2020 when Craig Foster won for My Octopus Teacher it was only because the event that year was virtual because of the COVID pandemic.
This chapter explores why and how African wildlife documentary moved significantly from East to Southern Africa in the late 1970s and 1980s, at a time when southern Africa faced considerable political turmoil: the struggle for independence in South-West Africa/Namibia; the June 1976 upheavals in Soweto; the battle for independence in Mozambique and Angola.
Chapter 4 will examine the importance of the rise of private lodges and a guiding culture in more detail and Chapter 5 outlines, through a critical comparison of Southern African with British productions, and particularly those of the BBC’s NHU, what the distinctive strengths and achievements of Southern African wildlife productions were and are. These chapters thus summarize much of the material that will be covered in more detail in later chapters that take a more historical and chronological approach.
Drawing on the theoretical insights of Bourdieu, Latour and Peters, this chapter examines three major sets of factors, agents and infrastructures: the background of the filmmakers; the legal, economic and political factors enabling the development of a local industry; and the crucial agents and infrastructures that enabled Southern Africans to go beyond relying on outsiders who made films in Africa. These cultural, political, economic and technological factors made it possible for Southern Africa to move from being simply a site for colonial or imperial production to being a place where Southern Africans were, arguably, producing the most interesting work in the genre. Given the difficulties subordinated formerly colonial cultures have in achieving this kind of cultural status, the achievement and the conditions for it matter.
The Filmmakers
Who were the filmmakers producing the major documentaries and what brought them to Southern Africa during this period if they came from other countries? I asked Jen Bartlett why she and her husband Des, both Australian-born, but the first major filmmaking couple in East Africa who had worked with Armand Denis and inspired Alan and Joan Root, had ended up in the Namib and spent the last years of their career in Southern Africa. Her answer succinctly sets out the push and pull factors involved in their eventual settling in Namibia:
To examine the parental food consumption and diet quality and its associations with children’s consumption in families at high risk for developing type 2 diabetes mellitus across Europe. Also, to compare food frequency consumption among parents and children from high-risk families to the European Dietary guidelines/recommendations.
Design:
Cross-sectional study using Feel4diabetes FFQ.
Setting:
Families completed FFQ and anthropometric measures were obtained. Linear regression analyses were applied to investigate the relations between parental food consumption and diet quality and their children’s food consumption after consideration of potential confounders.
Participants:
2095 European families (74·6 % mothers, 50·9 % girls). The participants included parent and one child, aged 6–8 years.
Results:
Parental food consumption was significantly associated with children’s intake from the same food groups among boys and girls. Most parents and children showed under-consumption of healthy foods according to the European Dietary Guidelines. Parental diet quality was positively associated with children’s intake of ‘fruit’ (boys: β = 0·233, P < 0·001; girls: β = 0·134, P < 0·05) and ‘vegetables’ (boys: β = 0·177, P < 0·01; girls: β = 0·234, P < 0·001) and inversely associated with their ‘snacks’ consumption (boys: β = –0·143, P < 0·05; girls: β = –0·186, P < 0·01).
Conclusion:
The present study suggests an association between parental food consumption and diet quality and children’s food intake. More in-depth studies and lifestyle interventions that include both parents and children are therefore recommended for future research.
John Varty did not come to wildlife filmmaking through any of the conventional routes. After the untimely death of his father meant that he had to give up plans to become a professional cricket player in England, he and his brother David persuaded their mother to let them take over the family hunting farm Sparta and turn it into a tourist destination. Both brothers have written important accounts of the development of Sparta into Londolozi (Varty 2008, 2014). Varty then became involved in wildlife filmmaking as a result of helping write scripts for Rick Lomba’s films that looked at the problems of excessive land use by commercial cattle farming and of new game fences. Varty was given a film camera as some kind of recompense when Lomba could not pay him and so ended up with the means to record animal behaviour.
Guides and Londolozi
The earliest Londolozi films showed Varty using his camera to record knowledgeable guides at Londolozi. The first, Focus on Africa (1983), starred Ian Thomas as photographer and him and his tracker Phineas Mhlongo as knowers of the bush. A fair amount of this film amounts to what one could see as advice to people thinking of going on a photographic safari: Thomas suggests what lenses would be optimal for use in (stills) photography and the film then shows him in action, for example intrepidly in a river with camera, trying to film hippos or animals drinking.
But the film had another motive besides giving photographic advice and the origin of the film lay for Varty in his sense that he should try to portray bush lore or what made for successful guides. Ian Thomas recalls:
One day I was sitting with John and some distance away, I heard some birds giving alarm calls at a snake. I mentioned this to him, and pointed towards a tree and said, ‘There is a snake over there’. He looked at me a bit sceptically, so we walked to the bush and sure enough a Black Mamba moved away in front of us. Straight away, he said that he would like to make a film about Phineas and me tracking together. What also spurred it on was that Phineas and I had a reputation for being able to track and find animals, particularly Lion and Leopard.