• English
    • Welsh
  • English 
    • English
    • Welsh
  • Login
Search DSpace:
  • Home
  • Research at Cardiff Met
  • Library Services
  • Contact Us
View item 
  • DSpace home
  • Cardiff School of Sport and Health Sciences
  • Taught Degrees (Sport and Health Sciences)
  • Masters Degrees (Sport)
  • View item
  • DSpace home
  • Cardiff School of Sport and Health Sciences
  • Taught Degrees (Sport and Health Sciences)
  • Masters Degrees (Sport)
  • View item
JavaScript is disabled for your browser. Some features of this site may not work without it.

EFFECT OF HIGH INTENSITY INTERVAL TRAINING ON CARDIAC AUTONOMIC MODULATION IN MIDDLE-AGED WOMEN

Thumbnail
View/open
Rogers_Samantha_MSc_Sport_and_Exercise_Science.docx.pdf (3.169Mb)
Author
Rogers, Samantha
Date
2014-01
Type
Thesis
Metadata
Show full item record
Abstract
Moderate intensity continuous training increases heart rate variability (HRV) in middle-aged women, but little is known about the time-efficient potency of high intensity interval training (HIIT) for improving cardiac autonomic modulation. This study aimed to assess the effects of 12 weeks HIIT on cardiac autonomic modulation in middle-aged women. Seven healthy middle-aged women (3 postmenopausal and 4 premenopausal) performed 12 weeks of HIIT consisting of 4 x 4 min cycling at 90- 95% HRmax with 3 min active recovery at 60-70% HRmax, 3 times a week. A maximal graded continuous exercise test was performed and supine resting HRV was measured during both 5 min of spontaneous and controlled breathing (10 breaths min-1) at baseline and after the HIIT programme. HRV was analysed by frequency domain methods: total power (TP), low frequency (LF) and high frequency (HF) spectral power. HIIT increased VO2 peak (17% P < 0.01) and peak power output (14% P < 0.001). HRV TP increased from 2420 ± 1367 to 3270 ± 1444 ms2 (P = 0.042) and HF power increased from 1310 ± 944 to 1773 ± 1083 ms2 (P = 0.024) during controlled breathing. No significant differences were found between premenopausal and postmenopausal women at baseline and after HIIT. Postmenopausal women experienced significant increases in TP and HF power (P < 0.05) and a significant decrease in resting HR (P < 0.05) in response to HIIT, whilst increases in premenopausal women were not statistically significant. In conclusion, HIIT increases HRV HF power reflecting vagal modulation in middle-aged women and is particularly effective training for postmenopausal women.
URI
http://hdl.handle.net/10369/7068
Collections
  • Masters Degrees (Sport) [168]

Related items

Showing items related by title, author, subject and abstract.

  • Thumbnail

    The effects of the menopause on left ventricular mechanics 

    Nio, Amanda (Cardiff Metropolitan University, 2020)
    Ageing is associated with sex-specific decreases in cardiac function that may be explained by the menopause. However, the effects of the menopause on regional myocardial function and the practical implications of ...
  • Thumbnail

    A cross-sectional study to determine if a family history of osteoporosis impacts on attitudes towards osteoporosis knowledge, beliefs and self-efficacy in middle-aged women from the United Kingdom and Ireland. 

    Cronly, Ava (2018-04-01)
    Background Osteoporosis accounts for more disability-adjusted life-years than any non-communicable disease. For prevention, osteoporosis health-beliefs and knowledge amongst high-risk groups including those with a family ...
  • Thumbnail

    The menopause alters aerobic adaptations to high-intensity interval training 

    Nio, Amanda; Rogers, Samantha; Mynors-Wallis, Rachel; Meah, Victoria L.; Black, Jane M.; Stembridge, Mike; Stöhr, Eric J. (Lippincott, Williams and Wilkins, 2020-05-21)
    Introduction: Post-menopausal women have lower resting cardiac function than pre- menopausal women, but whether the menopause influences maximal cardiac output and hence exercise capacity is unclear. It is possible that ...

Browse

DSpace at Cardiff MetCommunities & CollectionsBy issue dateAuthorsTitlesSubjectsThis collectionBy issue dateAuthorsTitlesSubjects

My Account

Login

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

DSpace software copyright © 2002-2015  DuraSpace
Contact us | Send feedback | Administrator