None listed
Conditions
Brief summary
The aim of the proposed research is to identify the influence of endurance exercise training on rates of cardiac arrhythmia, and how the manipulation of training variables can modify this relationship. Competitive and recreational cyclists will undergo monitoring of exercise and periodic screening for cardiac arrhythmia burden. This study will be run as a randomised, counterbalanced crossover trial with four intervention periods, those being: habitual training levels, high intensity, high frequency and high duration of exercise. Participants will attend laboratorial testing sessions at the beginning and end of each intervention period, where they will be tested for cardiac arrhythmia burden, aerobic fitness and for biochemical markers. During each observation/intervention period their daily exercise training and physical activity will be monitored.
Interventions
All intervention periods in this study will occur over a period of three weeks each. The number of cycling training session that each individual will undertake is dependent on their habitual training levels. These training sessions will be self-administered by the participants, with their progress and adherence being monitored by researchers via an online training tracker. The training sessions for each participant will be prescribed by an Exercise Scientist with 8 years experience at the beg
All intervention periods in this study will occur over a period of three weeks each. The number of cycling training session that each individual will undertake is dependent on their habitual training levels. These training sessions will be self-administered by the participants, with their progress and adherence being monitored by researchers via an online training tracker. The training sessions for each participant will be prescribed by an Exercise Scientist with 8 years experience at the beginning of each three week intervention period, and individualised based on their existing habitual training. High Frequency Intervention In this intervention participants will undertake training at 33% greater frequency (number of sessions per week) than their habitual exercise. In order to maintain the same volume (total energy expenditure) as their habitual training, this increased frequency will be offset by a 13% decrease in both the average intensity and duration of each session. High intensity Intervention In this intervention participants will undertake training at 33% greater average intensity than their habitual exercise. In order to maintain the same volume as their habitual training, this increased intensity will be offset by a 13% decrease in both the frequency and duration of training sessions. High Duration Intervention In this intervention participants will undertake training with a 33% greater session duration than their habitual exercise. In order to maintain the same volume as their habitual training, this increased duration will be offset by a 13% decrease in both the frequency and average intensity of training sessions.
Sponsors
La Trobe University
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Prevention
Masking
Blinded (masking used) (Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
Participants must be regular cyclists (1 or more bouts of cycling of >30 min per week). -Participants must be 18 years or older -Understand both spoken and written English -Participants must be currently cycling at least 1 session of 1 hour of cycling per week
Exclusion criteria
-Any existing cardiac abnormalities or conditions. -Any musculoskeltal conditions that would impact adherence or completion of the training.
Outcome results
None listed