Alex V Rowlands
Biographic Data
| ID | 6270299 |
|---|---|
| NAME | Alex V Rowlands |
| GIVEN NAMES | Alex V |
| FAMILY NAME | Rowlands |
| SIGNATURE | ROWLANDS A V |
| AFFILIATIONS | University of Leicester |
| ORCID | 0000-0002-1463-697X |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 3 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2009 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
High-Intensity Physical Activity During Late Adolescence Predicts Young Adult CT-Based Finite Element Bone Strength in Emerging Adulthood
Using a state-of-the-art CT/FEA method, this study suggests that high-intensity PA during late adolescence and emerging adulthood improves bone strength
Relative and absolute intensity accelerometer metrics decipher the effects of age, sex, and occupation on physical activity
On clinicaltrials.gov (NCT03986892). Retrospectively registered 14 June 2019
Association between Chronotype and Physical Behaviours in Adolescent Girls
The aim of this study was to (1) describe accelerometer-assessed physical behaviours by chronotype, and (2) examine the association between chronotype and accelerometer-assessed physical behaviours in a cohort of adolescent girls. Chronotype (single question) and physical behaviours (GENEActiv accelerometer on the non-dominant wrist) were assessed in 965 adolescent girls (13.9 ± 0.8 years). Linear mixed-effects models examined the relationships a…
A More Intense Examination of the Intensity of Physical Activity in People Living with Chronic Obstructive Pulmonary Disease
Physical activity (PA) intensity of people living with chronic obstructive pulmonary disease (COPD) is typically evaluated using intensity thresholds developed in younger, healthier populations with greater exercise capacity and free from respiratory symptoms. This study therefore compared (i) PA differences between COPD and non-COPD controls using both traditional intensity thresholds and threshold-free metrics that represent the volume and inte…
The Physical Behaviour Intensity Spectrum and Body Mass Index in School-Aged Youth
We examined the compositional associations between the intensity spectrum derived from incremental acceleration intensity bands and the body mass index (BMI) z-score in youth, and investigated the estimated differences in BMI z-score following time reallocations between intensity bands. School-aged youth from 63 schools wore wrist accelerometers, and data of 1453 participants (57.5% girls) were analysed. Nine acceleration intensity bands (range: …
Modelling the Reallocation of Time Spent Sitting into Physical Activity
Isotemporal substitution modelling (ISM) and compositional isotemporal modelling (CISM) are statistical approaches used in epidemiology to model the associations of replacing time in one physical behaviour with time in another. This study's aim was to use both ISM and CISM to examine and compare associations of reallocating 60 min of sitting into standing or stepping with markers of cardiometabolic health. Cross-sectional data collected during th…
Association of working shifts, inside and outside of healthcare, with severe Covid−19
Both health and shift work (measured at baseline, 2006-2010) were independently associated with over twice the odds of severe COVID-19 in 2020; the odds were over seven times higher in health workers who work shifts. Vaccinations, therapeutic and preventative options should take into consideration not only health and key worker status but also shift worker status
Physical Activity Intensity Cut-Points for Wrist-Worn Geneactiv in Older Adults
Purpose: This study aims to (1) establish GENEActiv intensity cutpoints in older adults and (2) compare the classification accuracy between dominant (D) or non-dominant (ND) wrist, using both laboratory and free-living data. Methods: Thirty-one older adults participated in the study. They wore a GENEActiv Original on each wrist and performed nine activities of daily living. A portable gas analyzer was used to measure energy expenditure for each t…
High intensity interval training does not result in short- or long-term dietary compensation in cardiac rehabilitation
Maturational timing, physical self-perceptions and physical activity in UK adolescent females
Greater biological maturity (i.e. early maturity) in adolescent girls is associated with less involvement in MVPA and appears to be partly explained by lower perceptions of body attractiveness and physical self-worth. Physical activity interventions should consider girls' perceptions of their pubertal related physiological changes during adolescence, particularly among early maturing girls
Ggir
Recent technological advances have transformed the research on physical activity initially based on questionnaire data to the most recent objective data from accelerometers. The shift to availability of raw accelerations has increased measurement accuracy, transparency, and the potential for data harmonization. However, it has also shifted the need for considerable processing expertise to the researcher. Many users do not have this expertise. The…
Differences in objectively measured physical activity and sedentary behaviour between white Europeans and south Asians recruited from primary care
ISRCTN83465245 Trial registration date: 14/06/2012
Associations of Physical Behaviours and Behavioural Reallocations with Markers of Metabolic Health
Standard statistical modelling has shown that the reallocation of sitting time to either standing or stepping may be beneficial for metabolic health. However, this overlooks the inherent dependency of time spent in all behaviours. The aim is to examine the associations between physical behaviours and markers of metabolic health (fasting glucose, fasting insulin, 2-h glucose, 2-h insulin, Homeostasis Model Assessment of Insulin Sensitivity (HOMA-I…
Testing the activitystat hypothesis
ACTRN12610000248066 (registered prospectively 24 March 2010)
Rural Environments and Community Health (Reach)
Australian New Zealand Clinical Trials Registry: ACTR12614000927628 (registered 28 August 2014)
Children's and adolescents' sedentary behaviour in relation to socioeconomic position
BACKGROUND: Sedentary behaviour is an emerging cardiometabolic risk factor in young people. Little is known about how socioeconomic position (SEP) and sedentary behaviour are associated in children and adolescents. This study examines associations between SEP and sedentary behaviour in school-age children and adolescents. METHODS: The core sample comprised 3822 Health Survey for England 2008 participants aged 5-15 years with complete information …
Seasonal changes in children's physical activity
Bout frequency was the most variable component of activity across season. However, children tended to maintain their rank for bout frequency. It would be of interest to investigate whether bout frequency can be manipulated in an activity intervention
Children's and adolescents' sedentary behaviour in relation to socioeconomic position
BACKGROUND: Sedentary behaviour is an emerging cardiometabolic risk factor in young people. Little is known about how socioeconomic position (SEP) and sedentary behaviour are associated in children and adolescents. This study examines associations between SEP and sedentary behaviour in school-age children and adolescents. METHODS: The core sample comprised 3822 Health Survey for England 2008 participants aged 5-15 years with complete information …
Seasonal changes in children's physical activity
Bout frequency was the most variable component of activity across season. However, children tended to maintain their rank for bout frequency. It would be of interest to investigate whether bout frequency can be manipulated in an activity intervention
Children's and adolescents' sedentary behaviour in relation to socioeconomic position
BACKGROUND: Sedentary behaviour is an emerging cardiometabolic risk factor in young people. Little is known about how socioeconomic position (SEP) and sedentary behaviour are associated in children and adolescents. This study examines associations between SEP and sedentary behaviour in school-age children and adolescents. METHODS: The core sample comprised 3822 Health Survey for England 2008 participants aged 5-15 years with complete information …
Rural Environments and Community Health (Reach)
Australian New Zealand Clinical Trials Registry: ACTR12614000927628 (registered 28 August 2014)
Testing the activitystat hypothesis
ACTRN12610000248066 (registered prospectively 24 March 2010)
Associations of Physical Behaviours and Behavioural Reallocations with Markers of Metabolic Health
Standard statistical modelling has shown that the reallocation of sitting time to either standing or stepping may be beneficial for metabolic health. However, this overlooks the inherent dependency of time spent in all behaviours. The aim is to examine the associations between physical behaviours and markers of metabolic health (fasting glucose, fasting insulin, 2-h glucose, 2-h insulin, Homeostasis Model Assessment of Insulin Sensitivity (HOMA-I…
Ggir
Recent technological advances have transformed the research on physical activity initially based on questionnaire data to the most recent objective data from accelerometers. The shift to availability of raw accelerations has increased measurement accuracy, transparency, and the potential for data harmonization. However, it has also shifted the need for considerable processing expertise to the researcher. Many users do not have this expertise. The…
Differences in objectively measured physical activity and sedentary behaviour between white Europeans and south Asians recruited from primary care
ISRCTN83465245 Trial registration date: 14/06/2012
Maturational timing, physical self-perceptions and physical activity in UK adolescent females
Greater biological maturity (i.e. early maturity) in adolescent girls is associated with less involvement in MVPA and appears to be partly explained by lower perceptions of body attractiveness and physical self-worth. Physical activity interventions should consider girls' perceptions of their pubertal related physiological changes during adolescence, particularly among early maturing girls
Modelling the Reallocation of Time Spent Sitting into Physical Activity
Isotemporal substitution modelling (ISM) and compositional isotemporal modelling (CISM) are statistical approaches used in epidemiology to model the associations of replacing time in one physical behaviour with time in another. This study's aim was to use both ISM and CISM to examine and compare associations of reallocating 60 min of sitting into standing or stepping with markers of cardiometabolic health. Cross-sectional data collected during th…
Association of working shifts, inside and outside of healthcare, with severe Covid−19
Both health and shift work (measured at baseline, 2006-2010) were independently associated with over twice the odds of severe COVID-19 in 2020; the odds were over seven times higher in health workers who work shifts. Vaccinations, therapeutic and preventative options should take into consideration not only health and key worker status but also shift worker status
Physical Activity Intensity Cut-Points for Wrist-Worn Geneactiv in Older Adults
Purpose: This study aims to (1) establish GENEActiv intensity cutpoints in older adults and (2) compare the classification accuracy between dominant (D) or non-dominant (ND) wrist, using both laboratory and free-living data. Methods: Thirty-one older adults participated in the study. They wore a GENEActiv Original on each wrist and performed nine activities of daily living. A portable gas analyzer was used to measure energy expenditure for each t…
High intensity interval training does not result in short- or long-term dietary compensation in cardiac rehabilitation
A More Intense Examination of the Intensity of Physical Activity in People Living with Chronic Obstructive Pulmonary Disease
Physical activity (PA) intensity of people living with chronic obstructive pulmonary disease (COPD) is typically evaluated using intensity thresholds developed in younger, healthier populations with greater exercise capacity and free from respiratory symptoms. This study therefore compared (i) PA differences between COPD and non-COPD controls using both traditional intensity thresholds and threshold-free metrics that represent the volume and inte…
The Physical Behaviour Intensity Spectrum and Body Mass Index in School-Aged Youth
We examined the compositional associations between the intensity spectrum derived from incremental acceleration intensity bands and the body mass index (BMI) z-score in youth, and investigated the estimated differences in BMI z-score following time reallocations between intensity bands. School-aged youth from 63 schools wore wrist accelerometers, and data of 1453 participants (57.5% girls) were analysed. Nine acceleration intensity bands (range: …
Association between Chronotype and Physical Behaviours in Adolescent Girls
The aim of this study was to (1) describe accelerometer-assessed physical behaviours by chronotype, and (2) examine the association between chronotype and accelerometer-assessed physical behaviours in a cohort of adolescent girls. Chronotype (single question) and physical behaviours (GENEActiv accelerometer on the non-dominant wrist) were assessed in 965 adolescent girls (13.9 ± 0.8 years). Linear mixed-effects models examined the relationships a…
High-Intensity Physical Activity During Late Adolescence Predicts Young Adult CT-Based Finite Element Bone Strength in Emerging Adulthood
Using a state-of-the-art CT/FEA method, this study suggests that high-intensity PA during late adolescence and emerging adulthood improves bone strength
Relative and absolute intensity accelerometer metrics decipher the effects of age, sex, and occupation on physical activity
On clinicaltrials.gov (NCT03986892). Retrospectively registered 14 June 2019
Medicine (15 works) · Physical Activity and Health (14 works) · Physical activity (11 works) · Physical therapy (11 works) · Obesity, Physical Activity, Diet (10 works) · Internal Medicine (9 works) · Demography (7 works) · Demography (6 works) · Biostatistics (5 works) · Environmental health (5 works)