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Article ; Online: Headpulse Biometric Measures Following Concussion in Young Adult Athletes.

Halabi, Cathra / Norton, Lynda / Norton, Kevin / Smith, Wade S

JAMA network open

2023 Volume 6, Issue 8, Page(s) e2328633

Abstract: Importance: Concussions are common in sports. Return-to-play protocols can be enhanced by objective biometrics.: Objective: To characterize temporal changes of headpulse, a digital biometric, in athletes with sports-related concussion; to explore the ...

Abstract	Importance: Concussions are common in sports. Return-to-play protocols can be enhanced by objective biometrics. Objective: To characterize temporal changes of headpulse, a digital biometric, in athletes with sports-related concussion; to explore the association of unstructured physical activity with headpulse changes. Design, setting, and participants: This cohort study included headpulse measurements from players in the highest level of amateur Australian Rules Football in South Australia. Analysis included feasibility and validation phases, with the feasibility cohort recruited between August 5, 2021, and September 10, 2021, and the validation cohort recruited between May 5, 2022, and September 3, 2022. Data were analyzed October 2022 through January 2023. Interventions: Cranial accelerometry detected micromovements of the head following cardiac contraction (what we have described as "headpulse"). Headpulse was serially recorded for 1 month in concussed individuals. Main outcomes and measures: Headpulse waveforms underwent frequency transformation analysis per prespecified algorithm. Result Z scores were calculated. Headpulse Z scores exceeding 2 (2 SDs from control means) met an abnormality threshold. Headpulse sensitivity, timing, and duration of change were determined. Results: A total of 59 control and 43 concussed individuals (44 total concussions; 1 control also concussed, 1 concussed individual injured twice) provided headpulse measurements. The feasibility cohort (all male) included 17 control (median [IQR] age, 23 [19-28] years) and 15 concussed individuals (median [IQR] age, 21 [19-23] years). The validation cohort included 25 female (median [IQR] age, 21 [20-22] years) and 17 male (median [IQR] age, 26 [23-29] years) control individuals, and 8 female (median [IQR] age, 28 [20-31] years) and 20 male (median [IQR] age, 21 [19-23] years) concussed individuals. Headpulse reached abnormality threshold in 26 of 32 concussed individuals (81%; 9% on day 0, 50% by day 2, 90% by day 14). Headpulse alterations lasted 14 days longer than symptoms and were exacerbated by return-to-play or unsupervised physical activity. Conclusions and relevance: In this study of 101 amateur Australian Rules Football athletes, the digital headpulse biometric was evaluated in 44 sports-related concussions. Compared with controls, new headpulse changes occurred after concussion; this objective metric may complement return-to-play protocols.
MeSH term(s)	Humans ; Male ; Female ; Young Adult ; Adult ; Cohort Studies ; Australia/epidemiology ; Brain Concussion/diagnosis ; Athletes ; Biometry
Language	English
Publishing date	2023-08-01
Publishing country	United States
Document type	Journal Article
ISSN	2574-3805
ISSN (online)	2574-3805
DOI	10.1001/jamanetworkopen.2023.28633
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Agreement between pre-exercise screening questionnaires completed online versus face-to-face.

Norton, Lynda / Thomas, Jessica / Bevan, Nadia / Norton, Kevin

PloS one

2018 Volume 13, Issue 6, Page(s) e0199836

Abstract: Objectives: To investigate the levels of agreement between self-reported responses to the Adult Pre-exercise Screening System (APSS) questionnaire using online versus face-to-face (F2F) modalities.: Design: Convenience sample of adults completing a ... ...

Abstract	Objectives: To investigate the levels of agreement between self-reported responses to the Adult Pre-exercise Screening System (APSS) questionnaire using online versus face-to-face (F2F) modalities. Design: Convenience sample of adults completing a pre-exercise screening questionnaire using different modalities. Methods: Adult volunteers (n = 94) were recruited to complete the APSS using both online and F2F modalities. Participants were provided a URL link to an online APSS questionnaire then followed-up the next day in a F2F interview. Objective health risk factors were also measured. Comparisons between responses were undertaken using kappa and correlation statistics to determine levels of agreement. Results: The levels of agreement between online versus F2F responses for the seven compulsory Stage 1 questions (known diseases and signs and/or symptoms of disease) were >94% (kappa = 0.644-0.794). Response comparisons for Stage 2 questions on health risk factors were also generally high (>82% agreement) but there were larger differences between reported and measured risk factors in Stage 3. Conclusions: Levels of agreement between the Stage 1 responses were substantial and support the use of this online option for pre-exercise screening. There were larger differences between self-reported and objectively measured health risk factors in Stages 2 and 3.
MeSH term(s)	Adolescent ; Adult ; Aged ; Exercise ; Female ; Humans ; Internet ; Male ; Middle Aged ; Surveys and Questionnaires
Language	English
Publishing date	2018-06-26
Publishing country	United States
Document type	Clinical Trial ; Comparative Study ; Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0199836
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Article ; Online: A scoping review of interventions using accelerometers to measure physical activity or sedentary behaviour during hospitalization.

Baldwin, Claire E / Parry, Selina M / Norton, Lynda / Williams, Jill / Lewis, Lucy K

Clinical rehabilitation

2020 Volume 34, Issue 9, Page(s) 1157–1172

Abstract: Objective: To identify interventions using wearable accelerometers to measure physical activity and/or sedentary behaviour in adults during hospitalization for an acute medical/surgical condition.: Data sources: Four databases were searched in August ...

Abstract	Objective: To identify interventions using wearable accelerometers to measure physical activity and/or sedentary behaviour in adults during hospitalization for an acute medical/surgical condition. Data sources: Four databases were searched in August 2019 (MEDLINE, CINAHL, Scopus, EMBASE). Review methods: Studies were selected if they described an intervention in adults with a medical/surgical condition, and concurrently reported an accelerometer-derived measure of physical activity and/or sedentary behaviour while participants were admitted. Items were screened for eligibility in duplicate. Included studies were synthesized to describe intervention types, feasibility and potential effectiveness. Results: Twenty-two studies were included, reporting on 3357 participants (2040 with accelerometer data). Identified types of interventions were: pre-habilitation ( Conclusion: Accelerometer-derived measures of physical activity and/or sedentary behaviour have been used to describe sample characteristics and intervention effects in studies of hospitalized adults. Interventions may involve a range of health professionals, but less is known about sedentary behaviour in this setting.
MeSH term(s)	Accelerometry ; Exercise ; Hospitalization ; Humans ; Sedentary Behavior
Language	English
Publishing date	2020-06-10
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	639276-3
ISSN	1477-0873 ; 0269-2155
ISSN (online)	1477-0873
ISSN	0269-2155
DOI	10.1177/0269215520932965
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Article ; Online: Physiological Response Differences between Run and Cycle High Intensity Interval Training Program in Recreational Middle Age Female Runners.

Mallol, Milos / Norton, Lynda / Bentley, David J / Mejuto, Gaizka / Norton, Kevin / Yanci, Javier

Journal of sports science & medicine

2020 Volume 19, Issue 3, Page(s) 508–516

Abstract: The aim of this investigation was to compare the changes in endurance running performance and physiological variables after a four-week period of high intensity interval training (HIIT) in either running or cycling in female athletes. Fourteen ... ...

Abstract	The aim of this investigation was to compare the changes in endurance running performance and physiological variables after a four-week period of high intensity interval training (HIIT) in either running or cycling in female athletes. Fourteen recreational female runners (age = 42 10 yr, height = 1.67 0.06 m, body mass = 61.6 10.4 kg, body mass index (BMI) = 22.2 3.4 kg.m
MeSH term(s)	Adult ; Bicycling/physiology ; Creatine Kinase/blood ; Female ; Heart Rate ; High-Intensity Interval Training/methods ; Humans ; Lactic Acid/blood ; Middle Aged ; Muscle Fatigue/physiology ; Myalgia/metabolism ; Myalgia/physiopathology ; Oxygen Consumption ; Perception/physiology ; Physical Endurance/physiology ; Physical Exertion/physiology ; Running/physiology
Chemical Substances	Lactic Acid (33X04XA5AT) ; Creatine Kinase (EC 2.7.3.2)
Language	English
Publishing date	2020-08-13
Publishing country	Turkey
Document type	Journal Article ; Randomized Controlled Trial
ZDB-ID	2075564-8
ISSN	1303-2968 ; 1303-2968
ISSN (online)	1303-2968
ISSN	1303-2968
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Article ; Online: Effects of Short-Term Physical Activity Interventions on Simple and Choice Response Times.

Norton, Kevin / Norton, Lynda / Lewis, Nicole

BioMed research international

2016 Volume 2016, Page(s) 5613767

Abstract: Objective. Response time (RT) is important for health and human performance and provides insight into cognitive processes. It deteriorates with age, is associated with chronic physical activity (PA), and improves with PA interventions. We investigated ... ...

Abstract	Objective. Response time (RT) is important for health and human performance and provides insight into cognitive processes. It deteriorates with age, is associated with chronic physical activity (PA), and improves with PA interventions. We investigated associations between the amount and type of PA undertaken and the rate of change in RT for low-active adults across the age range 18-63 yr. Methods. Insufficiently active adults were assigned to either a walking (n = 263) or higher-intensity (n = 380) exercise program conducted over 40 days. Active controls were also recruited (n = 135). Simple response time (SRT) and choice response time (CRT) were measured before and after the intervention and at 3-, 6-, and 12-month follow-up. Results. SRT and CRT slowed across the age range; however, habitually active participants at baseline had significantly faster CRT (p < 0.05). The interventions increased weekly PA with corresponding increases in physical fitness. These changes were mirrored in faster CRT across the study for both intervention groups (p < 0.05). No changes were found for SRT. Conclusions. Both PA interventions resulted in improvements in CRT among adults starting from a low activity base. These improvements were relatively rapid and occurred in both interventions despite large differences in exercise volume, type, and intensity. There were no effects on SRT in either intervention.
MeSH term(s)	Adult ; Exercise/physiology ; Female ; Humans ; Male ; Reaction Time/physiology ; Walking/physiology
Language	English
Publishing date	2016
Publishing country	United States
Document type	Journal Article
ZDB-ID	2698540-8
ISSN	2314-6141 ; 2314-6133
ISSN (online)	2314-6141
ISSN	2314-6133
DOI	10.1155/2016/5613767
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Article ; Online: Comparison of Reduced-Volume High-Intensity Interval Training and High-Volume Training on Endurance Performance in Triathletes.

Mallol, Milos / Bentley, David J / Norton, Lynda / Norton, Kevin / Mejuto, Gaizka / Yanci, Javier

International journal of sports physiology and performance

2019 Volume 14, Issue 2, Page(s) 239–245

Abstract: Purpose: To investigate changes in physiological and performance variables in triathletes following a 4-wk period of reduced training volume and increased training intensity.: Methods: Sixteen moderately trained triathletes were randomly allocated to ...

Abstract	Purpose: To investigate changes in physiological and performance variables in triathletes following a 4-wk period of reduced training volume and increased training intensity. Methods: Sixteen moderately trained triathletes were randomly allocated to 2 groups: a control (CON) group, which followed their usual training, or a high-intensity interval training (HIIT) group, which completed 2 HIIT sessions per week during 4 wk of reduced training volume Results: Maximal oxygen consumption (VO Conclusion: After a 4-wk HIIT program, VO
MeSH term(s)	Adult ; Athletes ; Athletic Performance/physiology ; Bicycling/physiology ; Female ; High-Intensity Interval Training ; Humans ; Male ; Middle Aged ; Oxygen Consumption ; Physical Endurance ; Physical Fitness ; Running/physiology ; Swimming/physiology
Language	English
Publishing date	2019-01-02
Publishing country	United States
Document type	Journal Article ; Randomized Controlled Trial
ISSN	1555-0273
ISSN (online)	1555-0273
DOI	10.1123/ijspp.2018-0359
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Article: Changes in Physical Activity Behaviour and Health Risk Factors Following a Randomised Controlled Pilot Workplace Exercise Intervention.

Burn, Naomi / Norton, Lynda Heather / Drummond, Claire / Ian Norton, Kevin

AIMS public health

2017 Volume 4, Issue 2, Page(s) 189–201

Abstract: Background: Declining physical activity (PA) and associated health risk factors are well established. Workplace strategies to increase PA may be beneficial to ameliorate extensive sedentary behavior. This study assessed the effectiveness of two PA ... ...

Abstract	Background: Declining physical activity (PA) and associated health risk factors are well established. Workplace strategies to increase PA may be beneficial to ameliorate extensive sedentary behavior. This study assessed the effectiveness of two PA interventions in workplace settings. Methods: Interventions were conducted over 40 days targeting insufficiently active (<150 min/wk PA) and/or obese (BMI ≥ 30 kg/m Results: Adherence rates (completed pre and post-testing) were not different between groups (76.0 Conclusions: These workplace interventions resulted in rapid and dramatic increases in PA behaviour and important health benefits. Short, in-work PA sessions were less efficacious than longer after-work sessions.
Language	English
Publishing date	2017-05-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	2777115-5
ISSN	2327-8994
ISSN	2327-8994
DOI	10.3934/publichealth.2017.2.189
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Article: A preliminary investigation of the Partners in Health scale measurement properties in patients with end stage renal disease.

Baxter, Claire / Morello, Andrea / Smith, David / Norton, Lynda / Bentley, David

Australian journal of primary health

2017 Volume 23, Issue 3, Page(s) 288–293

Abstract: End-stage renal disease (ESRD) is becoming more prevalent in Australia. As a result, strategies to improve quality of life when living with ESRD are becoming increasingly important. The Flinders Program has been developed to help support and increase the ...

Abstract	End-stage renal disease (ESRD) is becoming more prevalent in Australia. As a result, strategies to improve quality of life when living with ESRD are becoming increasingly important. The Flinders Program has been developed to help support and increase the self-management capacity of people living with chronic disease. The Partners in Health (PIH) scale is a self-management capacity assessment tool, which is an integral element of the Flinders Program. The primary aim of this study was to investigate the preliminary measurement properties of the PIH scale within the ESRD population. Forty participants took part in the study, which involved survey assessments at baseline and follow up and a semi-structured interview. Results indicated that the PIH scale had good internal reliability (α=0.85), moderate test-retest reliability (r=0.33) and face validity in ESRD patients. Areas for improving the instrument or data collection process were identified through qualitative interviews, and implications are discussed specific to ESRD patients.
Language	English
Publishing date	2017-07
Publishing country	Australia
Document type	Journal Article
ZDB-ID	2566332-X
ISSN	1836-7399 ; 1448-7527
ISSN (online)	1836-7399
ISSN	1448-7527
DOI	10.1071/PY16095
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Article: Association Between Centralization and Outcome for Children Admitted to Intensive Care in Australia and New Zealand: A Population-Based Cohort Study.

Slater, Anthony / Beca, John / Croston, Elizabeth / McEniery, Julie / Millar, Johnny / Norton, Lynda / Numa, Andrew / Schell, David / Secombe, Paul / Straney, Lahn / Young, Paul / Yung, Michael / Gabbe, Belinda / Shann, Frank

Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies

2022 Volume 23, Issue 11, Page(s) 919–928

Abstract: Objectives: To describe regional differences and change over time in the degree of centralization of pediatric intensive care in Australia and New Zealand (ANZ) and to compare the characteristics and ICU mortality of children admitted to specialist ... ...

Abstract	Objectives: To describe regional differences and change over time in the degree of centralization of pediatric intensive care in Australia and New Zealand (ANZ) and to compare the characteristics and ICU mortality of children admitted to specialist PICUs and general ICUs (GICUs). Design: A retrospective cohort study using registry data for two epochs of ICU admissions, 2003-2005 and 2016-2018. Setting: Population-based study in ANZ. Patients: A total of 43,256 admissions of children aged younger than 16 years admitted to an ICU in ANZ were included. Infants aged younger than 28 days without cardiac conditions were excluded. Interventions: None. Measurements and main results: The primary outcome was risk-adjusted ICU mortality. Logistic regression was used to investigate the association of mortality with the exposure to ICU type, epoch, and their interaction. Compared with children admitted to GICUs, children admitted to PICUs were younger (median 25 vs 47 mo; p < 0.01) and stayed longer in ICU (median 1.6 vs 1.0 d; p < 0.01). For the study overall, 93% of admissions in Australia were to PICUs whereas in New Zealand only 63% of admissions were to PICUs. The adjusted odds of death in epoch 2 relative to epoch 1 decreased (adjusted odds ratio [AOR], 0.50; 95% CI, 0.42-0.59). There was an interaction between unit type and epoch with increased odds of death associated with care in a GICU in epoch 2 (AOR, 1.63; 95% CI, 1.05-2.53 for all admissions; 1.73, CI, 1.002-3.00 for high-risk admissions). Conclusions: Risk-adjusted mortality of children admitted to specialist PICUs decreased over a study period of 14 years; however, a similar association between time and outcome was not observed in high-risk children admitted to GICUs. The results support the continued use of a centralized model of delivering intensive care for critically ill children.
MeSH term(s)	Child ; Infant ; Humans ; Cohort Studies ; Retrospective Studies ; New Zealand/epidemiology ; Critical Care ; Intensive Care Units ; Australia/epidemiology ; Hospital Mortality
Language	English
Publishing date	2022-08-29
Publishing country	United States
Document type	Journal Article
ZDB-ID	2052349-X
ISSN	1947-3893 ; 1529-7535
ISSN (online)	1947-3893
ISSN	1529-7535
DOI	10.1097/PCC.0000000000003060
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Zs.A 5600: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (2.OG) ab Jg. 2022: Lesesaal (EG)
Zs.MO 472: Show issues

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Article ; Online: Adherence, Compliance, and Health Risk Factor Changes following Short-Term Physical Activity Interventions.

Norton, Lynda H / Norton, Kevin I / Lewis, Nicole R

BioMed research international

2015 Volume 2015, Page(s) 929782

Abstract: Background: Low physical activity (PA) levels are associated with poor health risk factor profiles. Intervention strategies to increase PA and quantify the rate and magnitude of change in risk factors are important.: Methods: Interventions were ... ...

Abstract	Background: Low physical activity (PA) levels are associated with poor health risk factor profiles. Intervention strategies to increase PA and quantify the rate and magnitude of change in risk factors are important. Methods: Interventions were conducted over 40 days to increase PA in 736 insufficiently active (<150 min/wk PA) participants using either a pedometer or instructor-led group protocol. There were a further 135 active participants as controls. Major cardiovascular and metabolic risk factors, including fitness parameters, were measured before and after intervention. Results: Adherence to the interventions was higher for the group versus pedometer participants (87.1% versus 79.8%) and compliance rates for achieving sufficient levels of PA (≥150 min/wk) were also higher for the group participants (95.8% versus 77.6%). Total weekly PA patterns increased by 300 and 435 minutes, for the pedometer and group participants, respectively. Improvements were found for waist girth, total cholesterol, aerobic fitness, and flexibility relative to controls. The change in vigorous PA, but not moderate PA, was a significant predictor of the change in eight of 11 risk factor variables measured. Conclusions: Rapid and dramatic increases in PA among previously insufficiently active adults can result in important health benefits.
MeSH term(s)	Adolescent ; Adult ; Female ; Health Promotion ; Humans ; Male ; Middle Aged ; Motor Activity ; Risk Factors ; Walking/physiology
Language	English
Publishing date	2015
Publishing country	United States
Document type	Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
ZDB-ID	2698540-8
ISSN	2314-6141 ; 2314-6133
ISSN (online)	2314-6141
ISSN	2314-6133
DOI	10.1155/2015/929782
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