Publications

CamNtech Research Library

 

CamNtech products have been trusted by specialist researchers for 25 years. Our research library contains peer reviewed publications citing the use of our devices. Filter by product, application, keyword, author or use free text search to locate your area of interest.

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Found 44 Results

Effect of Plain Versus Sugar‐Sweetened Breakfast on Energy Balance and Metabolic Health

Objective This study investigated the effect of 3 weeks of high‐sugar (“Sweet”) versus low‐sugar (“Plain”) breakfast on energy balance, metabolic health, and appetite. Methods A total of 29 healthy adults (22 women) completed this randomized crossover study. Participants had pre‐ and postintervention appetite, health, and body mass outcomes measured, and they recorded diet, appetite (visual […]

Related Product: Actiheart

Publication Date: February 28, 2020


Child-related and parental predictors for thelarche in a general population of girls: the PANIC study

Background Obesity has been associated with earlier thelarche, whereas other predictors for it remain unclear. Methods We studied child-related and parental predictors for earlier thelarche in 195 girls aged 6–8 years followed up for 2 years. A physician evaluated breast development by inspection and palpation. Body fat percentage (BF%) was measured by dual-energy X-ray absorptiometry, […]

Related Product: Actiheart

Publication Date: February 20, 2020


Lipid metabolism links nutrient-exercise timing to insulin sensitivity in men classified as overweight or obese

Context Pre-exercise nutrient availability alters acute metabolic responses to exercise, which could modulate training responsiveness. Objective To assess acute and chronic effects of exercise performed before versus after nutrient ingestion on whole-body and intramuscular lipid utilization and postprandial glucose metabolism. Design (1) Acute, randomized, crossover design (Acute Study); (2) 6-week, randomized, controlled design (Training Study). […]

Related Product: Actiheart

Publication Date: January 30, 2020


Champ4life Study Protocol: A One-Year Randomized Controlled Trial of a Lifestyle Intervention for Inactive Former Elite Athletes with Overweight/Obesity

Preventive and educational programs directed to former elite athletes in the areas of healthy living are required. This is particularly relevant as obesity and health-related problems are observed in retired athletes, especially in those whose current levels of physical activity are below the recommendations. During their sports career, elite athletes are supported by a multidisciplinary […]

Related Product: Actiheart

Publication Date: January 21, 2020


Fundamental Movement Skill Approach to Combat Childhood Obesity in Surabaya, Indonesia: Potential Effects of Video Games Based Exercises (Exergaming)

The study aims to observe the effect of moderate intensity exergaming on mastering of fundamental movement skill and reduction in body mass index (BMI) in overweight and obese children in Surabaya, Indonesia. The participants were 17 primary school students, aged 6-12 years. All participants had a BMI above percentile 85 (overweight and obese) and performed […]

Related Product: Actiheart

Publication Date: January 1, 2020


How many calories do nurses burn at work? A real-time study of nurses’ energy expenditure

Background Nurses have high rates of overweight and obesity, and physical inactivity is one key determinant of weight gain. Aims The present study aims to quantify nurses’ energy expenditure over a standard 12-hour shift to establish whether activity levels at work are too low to maintain a healthy body weight. Methods Ward-based nurses (n = 96, 90 […]

Related Product: Actiheart

Publication Date: November 1, 2019


Development of an eating topography protocol and an investigation of its effects on body composition, appetite and mindfulness

Eating rate (ER) is part of the microstructure of meal ingestion and has been of increasing scientific interest due to manipulations being implicated in energy intake, appetite control and mindfulness. The current thesis aims to develop and test the slow eating rate (SER) protocol for use in overweight-free living adults and to investigate the protocol’s […]

Related Product: PRO-Diary

Publication Date: September 30, 2019


Combined GLP-1, oxyntomodulin, and peptide YY improves body weight and glycemia in obesity and prediabetes/type 2 diabetes: a randomized, single-blinded, placebo-controlled study

OBJECTIVE Roux-en-Y gastric bypass (RYGB) augments postprandial secretion of glucagon-like peptide 1 (GLP-1), oxyntomodulin (OXM), and peptide YY (PYY). Subcutaneous infusion of these hormones (“GOP”), mimicking postprandial levels, reduces energy intake. Our objective was to study the effects of GOP on glycemia and body weight when given for 4 weeks to patients with diabetes and […]

Related Product: Actiheart

Publication Date: July 27, 2019


Tracking snacking in real time: Time to look at individualised patterns of behaviour

Background: Identifying when and where people overeat is important for intervention design, yet little is known about how unhealthy behaviours unfold in real life. Aim: To track the activities, social contexts and locations that co-occur with unhealthy snacking. Methods: Sixty-four adults (49F, mean age = 38.6 years) used electronic diaries to record snacking, location, social […]

Related Product: PRO-Diary

Publication Date: July 26, 2019


Objectively assessed physical activity and weight status of primary school children in Germany with and without migration backgrounds. Public health

Objectives Many children are insufficiently active, and children with a migration background appear to be even less active and at a higher risk of developing obesity. This study evaluated the weight status, and the frequencies and intensities of objectively assessed physical activity (PA) of children with and without a migration background. Study design Cross-sectional study. […]

Related Product: Actiheart

Publication Date: June 27, 2019


Decreased lipogenesis-promoting factors in adipose tissue in postmenopausal women with overweight on a Paleolithic-type diet

Purpose We studied effects of diet-induced postmenopausal weight loss on gene expression and activity of proteins involved in lipogenesis and lipolysis in adipose tissue. Methods Fifty-eight postmenopausal women with overweight (BMI 32.5 ± 5.5) were randomized to eat an ad libitum Paleolithic-type diet (PD) aiming for a high intake of protein and unsaturated fatty acids or a […]

Related Product: Actiheart

Publication Date: December 1, 2018


Ovarian estradiol supports sexual behavior but not energy homeostasis in female marmoset monkeys

Objective In adult female rodents, ovarian estradiol (E2) regulates body weight, adiposity, energy balance, physical activity, glucose-insulin homeodynamics, and lipid metabolism, while protecting against diet-induced obesity. The same E2 actions are presumed to occur in primates, but confirmatory studies have been lacking. Methods We investigated the consequences of ovariectomy (OVX) and E2 replacement in female […]

Related Product: Actiwatch Mini

Publication Date: July 18, 2018


Dietary sodium intake and its relationship to adiposity in young black and white adults: The African‐PREDICT study

Obesity and salt intake are both established factors contributing to cardiovascular disease development. Recently, studies found a controversial positive relationship between dietary salt and obesity. Therefore, the authors investigated whether obesity‐related measures are associated with 24‐hour urinary sodium in a healthy biethnic population. The study included 761 adults (20‐30 years) with complete 24‐hour urinary sodium, […]

Related Product: Actiheart

Publication Date: July 1, 2018


Self-reported physical activity is not a valid method for measuring physical activity in 15-year-old South African boys and girls

Physical activity plays an important role in the prevention of chronic lifestyle-related diseases. The development of valid instruments for the assessment of physical activity remains a challenge in field studies. The purpose of the present study was therefore to determine the level of agreement between physical activity objectively measured by the ActiHeart® (Cambridge Neurotechnology Ltd, […]

Related Product: Actiheart

Publication Date: June 6, 2018


Physical Activity in Pre-school Children: Role of the Teacher during Free Play

It has become evident over the past decade that the lack of PA (physical activity) is a major concern for the population at large CDC (Center for Disease Control). This lack is a major reason for the increase in overweight and obese children (USDHHS, 2014). The CDC and the American Heart Association recommend children need […]

Related Product: Actiheart

Publication Date: June 1, 2018


A heterogeneous response of liver and skeletal muscle fat to the combination of a Paleolithic diet and exercise in obese individuals with type 2 diabetes: a randomised controlled trial

Aims/hypothesis The aim of the study was to investigate ectopic fat deposition and insulin sensitivity, in a parallel single-blinded randomised controlled trial, comparing Paleolithic diet alone with the combination of Paleolithic diet and exercise in individuals with type 2 diabetes. Methods Thirty-two individuals with type 2 diabetes with BMI 25–40 kg/m2 and 30–70 years of […]

Related Product: Actiheart

Publication Date: April 26, 2018


Mediating effects of motor performance, cardiorespiratory fitness, physical activity, and sedentary behaviour on the associations of adiposity and other cardiometabolic risk factors with academic achievement in children

We investigated the associations of cardiometabolic risk factors with academic achievement and whether motor performance, cardiorespiratory fitness, physical activity, or sedentary behaviour mediated these associations. Altogether 175 children 6–8 years-of-age participated in the study. We assessed body fat percentage (BF%), waist circumference, insulin, glucose, triglycerides, HDL cholesterol, and systolic and diastolic blood pressure, leptin, alanine […]

Related Product: Actiheart

Publication Date: March 9, 2018


Sleep extension is a feasible lifestyle intervention in free-living adults who are habitually short sleepers: a potential strategy for decreasing intake of free sugars? A randomized controlled pilot study

Background Evidence suggests that short sleep duration may be a newly identified modifiable risk factor for obesity, yet there is a paucity of studies to investigate this. Objective We assessed the feasibility of a personalized sleep extension protocol in adults aged 18–64 y who are habitually short sleepers (5 to <7 h), with sleep primarily […]

Related Product: MotionWatch

Publication Date: January 10, 2018


Associations of active commuting with body fat and visceral adipose tissue: a cross-sectional population based study in the UK

The promotion of active travel (walking and cycling) is one promising approach to prevent the development of obesity and related cardio-metabolic disease. However the associations between active travel and adiposity remain uncertain. We used the Fenland study (a population based-cohort study; Cambridgeshire, UK, 2005–15) to describe the association of commuting means with DEXA measured body […]

Related Product: Actiheart

Publication Date: January 1, 2018


Rest-activity circadian rhythm and sleep quality in patients with binge eating disorder

Recent findings suggest that altered rest-activity circadian rhythms (RARs) are associated with a compromised health status. RARs abnormalities have been observed also in several pathological conditions, such as cardiovascular, neurological, and cancer diseases. Binge eating disorder (BED) is the most common eating disorder, with a prevalence of 3.5% in women and 2% in men. BED […]

Related Product: MotionWatch

Publication Date: November 16, 2017


Characterization of skin function associated with obesity and specific correlation to local/systemic parameters in American women

Background Obesity is considered problematic not only as a major cause of diabetes, hypertension, and dyslipidemia, but also as a risk of intractable dermatosis; however influence of obesity on skin function has not been clarified. To clarify the mechanism of obesity-associated skin disorders, we aimed to characterize the skin function of subjects with obesity, and […]

Related Product: Actiheart

Publication Date: November 13, 2017


Subjectively and objectively assessed social and physical environmental correlates of preschoolers’ accelerometer-based physical activity

Background Overweight and low levels of physical activity (PA) in preschoolers are major public health concerns. However, to date only few studies have investigated subjective and objective correlates of PA across different socioecological domains in preschoolers. We therefore simultaneously investigate associations between preschoolers’ objectively measured leisure-time PA and a comprehensive set of subjective and objective […]

Related Product: Actiheart

Publication Date: November 7, 2017


Interplay of socioeconomic status and supermarket distance is associated with excess obesity risk: a UK cross-sectional study

U.S. policy initiatives have sought to improve health through attracting neighborhood supermarket investment. Little evidence exists to suggest that these policies will be effective, in particular where there are socioeconomic barriers to healthy eating. We measured the independent associations and combined interplay of supermarket access and socioeconomic status with obesity. Using data on 9702 UK […]

Related Product: Actiheart

Publication Date: October 25, 2017


Sedentary time among primary school children in south-West Germany: amounts and correlates

Background Sedentary behaviour in children is related to different health consequences such as overweight and cardio-metabolic diseases that can track into adulthood. Previous studies have shown that children spend hours being sedentary, but no data of sedentary time (ST) among German children has been available, yet. Therefore, this study investigated objectively measured amounts and correlates […]

Related Product: Actiheart

Publication Date: October 12, 2017


Validation of MotionWatch8 accelerometer intensity cutpoints in children

Objective. Excess body weight in children has become a serious public health concern worldwide. The Centers for Disease Control and Prevention (CDC) demonstrated that childhood obesity has tripled since the 1970s in the United States. To prevent childhood obesity, the CDC recommends that children achieve 60 minutes of moderate to vigorous physical activity each day. […]

Related Product: MotionWatch

Publication Date: June 1, 2017



Ramadan model of intermittent fasting for 28 d had no major effect on body composition, glucose metabolism, or cognitive functions in healthy lean men

Objectives There has been a parallel increase in the incidence of obesity and diabetes as well as the number of daily meals. However, evidence is lacking regarding the role of intermittent fasting. The aim of this study was to determine the effects of a Ramadan model of intermittent fasting (RIF; 14 h of daytime abstinence […]

Related Product: Actiheart

Publication Date: May 1, 2017


Relationship between volition, physical activity and weight loss maintenance: Study rationale, design, methods and baseline characteristics

Aims: To investigate the relationship between volition, physical activity and weight loss maintenance. Methods: We recruited 84 sedentary (maximal oxygen uptake: 25 ± 5 ml/min), overweight and obese (Body mass index (BMI) 38 ± 7 m/h2, fat 44 ± 7 %) women ( n = 55) and men ( n = 29) for an interdisciplinary […]

Related Product: Actiheart

Publication Date: May 1, 2017


Attenuated Low‐Grade Inflammation Following Long‐Term Dietary Intervention in Postmenopausal Women with Obesity

Objective Abdominal fat accumulation after menopause is associated with low‐grade inflammation and increased risk of metabolic disorders. Effective long‐term lifestyle treatment is therefore needed. Methods Seventy healthy postmenopausal women (age 60 ± 5.6 years) with BMI 32.5 ± 5.5 were randomized to a Paleolithic‐type diet (PD) or a prudent control diet (CD) for 24 months. Blood samples and fat […]

Related Product: Actiheart

Publication Date: April 25, 2017


Relationship between physical activity, body fatness and cardiorespiratory fitness in South African adolescents: The PAHL Study

Low cardiorespiratory fitness and inactivity are strong health predictors associated with excessive fatness. The objective of this study was to determine the associations between physical activity (PA) and cardiorespiratory fitness and body fatness in South African adolescents. A cross-sectional study was performed with a subsample of 149 school-going adolescents (58 boys and 91 girls) with […]

Related Product: Actiheart

Publication Date: March 2, 2017


Exploring childhood obesity prevention among diverse ethnic groups in schools and places of worship: recruitment, acceptability and feasibility of data collection and intervention components

Small-scale, detailed exploration of the recruitment, assessment, and evaluation processes of obesity intervention among minority ethnic children. The study took place in schools and places of worship during 2008–2010 in London, UK. Measures included 3-day food diaries, 24 h dietary recalls, the Youth Physical Activity Questionnaire, accelerometry, and diet and physical activity self-efficacy questionnaires. Potential […]

Related Product: Actiheart

Publication Date: February 24, 2017


Design, Implementation, and Study Protocol of a Kindergarten-Based Health Promotion Intervention

Inactivity and an unhealthy diet amongst others have led to an increased prevalence of overweight and obesity even in young children. Since most health behaviours develop during childhood health promotion has to start early. The setting kindergarten has been shown as ideal for such interventions. “Join the Healthy Boat” is a kindergarten-based health promotion programme […]

Related Product: Actiheart

Publication Date: February 20, 2017


Obesity history and daily patterns of physical activity at age 60–64 years: findings from the MRC National Survey of Health and Development.

Background The aim of this study was to investigate associations of current body mass index (BMI) and obesity history with daily patterns of physical activity. Methods At age 60–64, participants from a British birth cohort study wore accelerometers for 5 days. Accelerometry counts were log-transformed and mean log-counts were used to derive a summary variable […]

Related Product: Actiheart

Publication Date: February 18, 2017


Usefulness of motion sensors to estimate energy expenditure in children and adults: a narrative review of studies using DLW

It is well documented that meeting moderate-to-vigorous physical activity guidelines of 150 min per week is protective against chronic disease, and this is likely explained by higher energy expenditure (EE). In opposition, sedentary behavior (low EE) seems to impair health outcomes. There are gold standard methods to measure EE such as the doubly labeled water (DLW) […]

Related Product: Actiheart

Publication Date: February 1, 2017


Ethnic differences in anthropometric measures and abdominal fat distribution: a cross-sectional pooled study in Inuit, Africans and Europeans.

Background Ethnic variation in abdominal fat distribution may explain differences in cardiometabolic risk between populations. However, the ability of anthropometric measures to quantify abdominal fat is not clearly understood across ethnic groups. The aim of this study was to investigate the associations between anthropometric measures and visceral (VAT) and subcutaneous abdominal adipose tissue (SAT) in […]

Related Product: Actiheart

Publication Date: January 13, 2017


Physical activity of German children during different segments of the school day

Aim This study objectively investigated the amount and intensity of German primary school children’s physical activity (PA) during different segments of the school day and explored the contribution of physical education (PE) and break times to daily moderate to vigorous PA (MVPA). Subject and methods PA of 294 children (7.1 ± 0.7 years, 48 % […]

Related Product: Actiheart

Publication Date: January 1, 2017


Adipose tissue metabolic and inflammatory responses to a mixed meal in lean, overweight and obese men

Purpose Most of what we know about adipose tissue is restricted to observations derived after an overnight fast. However, humans spend the majority of waking hours in a postprandial (fed) state, and it is unclear whether increasing adiposity impacts adipose tissue responses to feeding. The aim of this research was to investigate postprandial responses in […]

Related Product: Actiheart

Publication Date: January 1, 2017


Increased heart rate and energy expenditure in frontotemporal dementia.

The obesity paradox, whereby being overweight or obese during mid-life is associated with higher rates of dementia in later life, while low body mass index (BMI) in older populations is associated with a higher risk of dementia, has been demonstrated in multiple studies of patients with Alzheimer’s disease (Fitzpatrick et al., 2009). In another neurodegenerative […]

Related Product: Actiheart

Publication Date: January 1, 2017


Role of physical activity and sleep duration in growth and body composition of preschool‐aged children

Objective The impact of physical activity patterns and sleep duration on growth and body composition of preschool‐aged children remains unresolved. Aims were (1) to delineate cross‐sectional associations among physical activity components, sleep, total energy expenditure (TEE), and body size and composition; and (2) to determine whether physical activity components, sleep, and TEE predict 1‐year changes […]

Related Product: Actiheart

Publication Date: April 18, 2016


The causal role of breakfast in energy balance and health: a randomized controlled trial in obese adults

Background: The causal nature of associations between breakfast and health remain unclear in obese individuals. Objective: We sought to conduct a randomized controlled trial to examine causal links between breakfast habits and components of energy balance in free-living obese humans. Design: The Bath Breakfast Project is a randomized controlled trial with repeated measures at baseline […]

Related Product: Actiheart

Publication Date: February 10, 2016


Strong and persistent effect on liver fat with a Paleolithic diet during a two-year intervention

Background/Objectives: Our objective was to investigate changes in liver fat and insulin sensitivity during a 2-year diet intervention. An ad libitum Paleolithic diet (PD) was compared with a conventional low-fat diet (LFD). Subjects/Methods: Seventy healthy, obese, postmenopausal women were randomized to either a PD or a conventional LFD. Diet intakes were ad libitum. Liver fat […]

Related Product: Actiheart

Publication Date: January 20, 2016


Associations between sleep and memory in a clinical sample of obese children and adolescents

Today more than one third of U. S. children and adolescents are classified as overweight or obese. While interventions have produced short term improvements in weight status, treatment effects are infrequently maintained. Standard interventions may not be well-suited for the cognitive profile associated with obesity, which is characterized by impaired executive functioning. The literature on […]

Related Product: MotionWatch

Publication Date: September 5, 2014


Workplace Stress & Eating Behaviour

There is an obesity epidemic occurring with the UK, so gaining an understanding of the factors which may contribute to overeating is therefore important. •People encounter daily hassles and stressors throughout their day, particularly in the workplace. •80% of individuals are believed to change their caloric intake in response to stress, particularly increasing consumption of […]

Related Product: PRO-Diary

Publication Date: November 1, 2011


Oxyntomodulin increases energy expenditure in addition to decreasing energy intake in overweight and obese humans: a randomised controlled trial

Background: Oxyntomodulin has recently been found to decrease body-weight in obese humans and may be a potential anti-obesity therapy. Objective: To determine whether oxyntomodulin alters energy expenditure, in addition to reducing energy intake, in ‘free-living’ overweight and obese volunteers. Design: Randomized double-blind controlled cross-over trial. Setting: Community and hospital-based. Participants: Fifteen healthy overweight and obese […]

Related Product: Actiheart

Publication Date: December 1, 2006


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