Impact of a novel home-based exercise intervention on health indicators in inactive premenopausal women: a 12-week randomised controlled trial (original) (raw)
Abstract
Purpose
This study tested the hypothesis that a novel, audio-visual-directed, home-based exercise training intervention would be effective at improving cardiometabolic health and mental well-being in inactive premenopausal women.
Methods
Twenty-four inactive premenopausal women (39 ± 10 years) were randomly assigned to an audio-visual-directed exercise training group (DVD; n = 12) or control group (CON; n = 12). During the 12-week intervention period, the DVD group performed thrice-weekly training sessions of 15 min. Training sessions comprised varying-intensity movements involving multiplanar whole-body accelerations and decelerations (average heart rate (HR) = 76 ± 3% HRmax). CON continued their habitual lifestyle with no physical exercise. A series of health markers were assessed prior to and following the intervention.
Results
Following the DVD intervention, HDL cholesterol (pre: 1.83 ± 0.45, post: 1.94 ± 0.46 mmol/L) and mental well-being, assessed via the Warwick Edinburgh Mental Well-Being Scale, improved (P < 0.05). Conversely, [LDL cholesterol], [triglycerides], fasting [glucose], body composition and resting blood pressure and HR were unchanged following the DVD intervention (_P_ > 0.05). There were no pre-post intervention changes in any of the outcome variables in the CON group (P > 0.05).
Conclusion
The present study suggests that a novel, audio-visual-directed exercise training intervention, consisting of varied-intensity movements interspersed with spinal and lower limb mobility and balance tasks, can improve [HDL cholesterol] and mental well-being in premenopausal women. Therefore, home-based, audio-visual-directed exercise training (45 min/week) appears to be a useful tool to initiate physical activity and improve aspects of health in previously inactive premenopausal women.
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Abbreviations
ANOVA:
Analysis of variance
BMI:
Body mass index
BP:
Blood pressure
bpm:
Beats per minute
cm:
Centimetre
CHD:
Coronary heart disease
CON:
Control group
CV:
Coefficient of variation
DVD:
Audio-visual-directed exercise training group
HDL-C:
High-density lipoprotein cholesterol
HR:
Heart rate
HRmax:
Maximum heart rate
kg:
Kilogram
MAP:
Mean arterial pressure
min:
Minute
mL:
Millilitres
ml·kg−1·min−1:
Millilitres per kilogram body mass per minute
mmHg:
Millimetres mercury
MRI:
Magnetic resonance imaging
LDL-C:
Low-density lipoprotein cholesterol
OGTT:
Oral glucose tolerance test
RPE:
Ratings of perceived exertion
SD:
Standard deviation
tAUC:
Total area under the curve
TC:
Total cholesterol
WEMWBS:
Warwick-Edinburgh mental well-being scale
y:
Year
YYIE1:
Yo-Yo Intermittent Endurance Level 1 test
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Acknowledgements
The authors would like to thank the participants for their outstanding efforts and perseverance throughout the testing and intervention period. The authors would also like to thank the Royal Devon and Exeter NHS Foundation Trust for their analytical help.
Funding
The study was supported by FIFA-Medical Assessments and Research Centre (F-MARC) and Nordea-fonden (Grant No. 1-ST-P$$$-$$$-036-JZ-F1-05858).
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Authors and Affiliations
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
Luke J. Connolly, Suzanne Scott, Carmelina M. Morencos, Andrew M. Jones, Peter Krustrup, Stephen J. Bailey & Joanna L. Bowtell - School of Health Professions, University of Plymouth, Plymouth, UK
Luke J. Connolly - NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter, UK
Jonathan Fulford - College of Medicine and Health, University of Exeter, Exeter, UK
Karen Knapp - Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, SDU Sport and Health Sciences Cluster (SHSC), Odense, Denmark
Peter Krustrup - School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
Stephen J. Bailey
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Contributions
LC, SS, JF, AJ, KK, PK, SB and JB conceived the presented idea and designed the study. SS was involved in producing the exercise training protocol and training the participants for unsupervised exercise training at home. LC, SS and CM were involved in participant recruitment. LC, SS, CM and JF performed the data collection. LC, SS, CM and JF performed the analysis. All authors discussed the results and contributed to the final manuscript.
Corresponding author
Correspondence toLuke J. Connolly.
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Conflict of interest
The authors have no conflict of interests to declare.
Ethical approval
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (The Sport and Health Sciences Research Ethics Committee at the University of Exeter, Exeter, UK. Ref: 141015/A/01) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Communicated by Lori Ann Vallis.
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Connolly, L.J., Scott, S., Morencos, C.M. et al. Impact of a novel home-based exercise intervention on health indicators in inactive premenopausal women: a 12-week randomised controlled trial.Eur J Appl Physiol 120, 771–782 (2020). https://doi.org/10.1007/s00421-020-04315-7
- Received: 02 May 2019
- Accepted: 03 February 2020
- Published: 19 March 2020
- Issue Date: April 2020
- DOI: https://doi.org/10.1007/s00421-020-04315-7