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|Title: ||The effects of brisk walking on endurance fitness, lipoprotein metabolism and other risk factors for coronary heart disease|
|Authors: ||Stensel, David J.|
|Issue Date: ||1993|
|Publisher: ||© David Stensel|
|Abstract: ||This thesis examines the potential of a one year programme of brisk walking to influence endurance fitness, lipoprotein metabolism and other risk factors for coronary heart disease (CHD) in previously sedentary, middle-aged men.
Seventy-two asymptomatic males were recruited into the study and randomly
allocated on a two to one basis into either a walking group (n = 48) or a control
group (n = 24). Walkers were asked to build up to an average of 45 minutes of
brisk walking per day and maintain this level thereafter. Control subjects
continued with their habitual lifestyle. Both groups undertook not to change
their dietary habits.
Maximum oxygen uptake (V0₂max) was predicted at base line, three, six and
12 months from submaximal heart rate and oxygen uptake data during
treadmill walking. Endurance fitness was assessed at similar intervals by
measuring heart rate and blood lactate concentration during standardised
submaximal treadmill walking. Serum concentrations of total cholesterol, high
density lipoprotein cholesterol, apoproteins A-I and B, triglycerides and
lipoprotein(a) were measured at each observation point. Additionally, plasma
fibrinogen, resting arterial blood pressure and indices of pulmonary function
were determined. Differences in the response of walkers and controls over
time were examined using two way analysis of variance for repeated
measures employing the 5% level of significance.
Adherence to the walking programme was high and 42 of the walkers (88%)
remained in the study for the year completing an average of 28 ± 9 (mean ±
SD) minutes of brisk walking each day (self-report). The response of the
walkers over time was significantly different to that of the controls for predicted
V0₂max and for heart rate and blood lactate concentration during
standardised submaximal exercise indicating that brisk walking favourably
influenced endurance fitness. No significant differences were observed
between groups for any of the lipoprotein variables or other CHD risk factors
monitored during the study.
It was concluded that brisk walking did not influence established CHD risk
factors in this group of previously sedentary middle-aged men despite the
evidence of improved endurance fitness.|
|Description: ||A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University.|
|Sponsor: ||British Heart Foundation|
|Appears in Collections:||PhD Theses (Sport, Exercise and Health Sciences)|
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