The effects of perceptually-regulated exercise training on fitness

• Register: ANZCTR
• Last refreshed on: 13 January 2020
• Main ID: ACTRN12612000268842
• Date of registration: 06/03/2012
• Prospective Registration: Yes
• Primary sponsor: University of South Australia
• Public title: The effects of perceptually-regulated exercise training on fitness
• Scientific title: The effect of perceptually-regulated exercise training in previously sedentary adults on aerobic fitness
• Date of first enrolment: 05/04/2012
• Target sample size: 69
• Recruitment status: Not yet recruiting
• URL: https://anzctr.org.au/ACTRN12612000268842.aspx
• Study type: Interventional
• Study design: Purpose: Treatment; Allocation: Randomised controlled trial;
• Phase: Not Applicable

Countries of recruitment

Australia

Contacts

• Name: Associate Professor Gaynor Parfitt

• Name: Associate Professor Gaynor Parfitt

Key inclusion & exclusion criteria

Inclusion criteria: currently sedentary <2 cardiovascular risk factors.
If participants report >2 risk factors (e.g. currently sedentary, smoker, male > 44 yrs) GP or appropriate Allied Health Professional to confirm safe to exercise.
Exclusion criteria: >2 cardiovascular risk factors and no GP or Allied Health Profession consent for exercise

Age minimum: 25 Years
Age maximum: 65 Years
Gender: Both males and females

Health Condition(s) or Problem(s) studied

Physical Medicine / Rehabilitation - Other physical medicine / rehabilitation

Sedentary behaviour: classified as failing to achieve guidelines of 30 min moderate activity 5 days a week;
Sedentary behaviour: classified as failing to achieve guidelines of 30 min moderate activity 5 days a week

Cardiovascular - Coronary heart disease

Intervention(s)

Arm 1: Perceptually-regulated exercise training on a treadmill. Exercise intensity will be supervised at and perceptually-regualted at a rating of percieved exertion (RPE) 13, for 8 weeks, three times a week for 30 min. Training will be in groups of up to 5.
Arm 2: Perceptually-regulated exercise training on a treadmill. Exercise intensity will be supervised to be at RPE 15, for 8 weeks, three times a week for 30 min. Training will be in groups of up to 5.
Arm 3: No treatment control. Participants will continue their typical behaviour

Primary Outcome(s)

maximal aerobic capacity assessed with breath by breath on- line gas analysis during a graded treadmill exercise test. Participants will perform a graded exercise test. Treadmill speed will be fixed at 5.3 km/hr with the gradient commencing at 0% for the first minute and increased by 1%/min thereafter. The test will terminate when there is 1) a plateau in oxygen consumption; 2) a heart rate within 10 beats / min of age-predicted maximum; and 3) an RER of 1.15.[baseline, 8 weeks, 6 months post-training]

Secondary Outcome(s)

Affect using Hardy and Rejeski's (1989) Feeling Scale and Thayer's (1989) Activation Deactivation Adjective Checklist[week 1 training, week 4 training, week 8 training]

Mean arterial pressure: Blood pressure will be measured using an automatic blood pressure monitor (UA-767, A&D Company, Ltd, Tokyo, Japan) following the manufacturers guidelines. After a 10 minute period of sitting on a hardback chair with both feet on the floor and their left arm supported at heart level, the air hose of the arm cuff will be aligned with the brachial artery at a point 2-3 cm above the elbow. The mean arterial blood pressure, from two separate measures (with a minimum of 10-min between each measure) will be calculated.[baseline, 8 weeks, 6 months post-training]

Cholesterol: A small sample of capillary blood collected from a finger prick will be applied to a disposable test strip and used to measure total cholesterol via a hand-held, portable blood analyzer (Cardiochek P.A. & PTS PANELS test strips, Polymer Technology systems Inc., Indianapolis, USA).[baseline, 8 weeks, 6 months post-training]

Motivational processes will be assessed with the use of self-report questionnaires: Markland and Tobin's (2003) Behavioural Regulation in Exercise Questionnaire-2; McAuley et al's (1991) Intrinsic Motivation Inventory: Competence and Interest-enjoyment items; and Markand and Hardy's (1997) locus of causality for exercise scale.[baseline, 8 weeks, 6 months]

Secondary ID(s)

Nil

Source(s) of Monetary Support

University of South Australia

Ethics review

Status: Not approved
Approval date:
Contact:

University of South Australia Human Research Ethics Committee