Authors
Scully, D; Kremer, J; Meade, MM;
Graham, R and Dudgeon, K
Date
1998
Keywords
Psychological well-being;
exercise
Country of research
Northern Ireland
Summary of findings
This offers a critical
examination of evidence relating to the relationship between
physical exercise and psychological benefits. The review examines
existing literature on exercise and mental health in relation to
changes in anxiety, depression, mood, self-esteem, and stress
reactivity, premenstrual syndrome and body image. The general
conclusion is that a range of exercise regimens may be able to play
a therapeutic role in relation to a number of psychological
disorders. The authors argue that enthusiasm for the positive
effects of exercise on psychological well-being must be tempered
with an acknowledgement of potential danger, such as exercise
addiction and body image. Existing research suggests that different
forms of physical exercise may be palliative in relation to
particular conditions and different psychological conditions
respond differently to differing exercise regimens.
With regard to depression the authors conclude
that it seems safe to accept that physical exercise regimens will
have a positive influence, with the most powerful effects noted
among clinical populations. Limited evidence would suggest that
aerobic exercise is most effective, including activities such as
walking, jogging, cycling, light circuit training and weight
training and that regimens which extend over several months appear
to yield the most positive results.
With regard to anxiety the literature
unequivocally supports the positive effects of exercise, with short
bursts of exercise appearing to be sufficient. In addition, the
nature of the exercise does not appear to be crucial, with the most
positive effects being among those who adhere to programmes for
several months.
In respect of stress responsivity the role
that exercise plays is described as preventive rather than
corrective and there are unaswered questions about the relationship
between stress and physiological and psychological symptoms.
Nevertheless, it would appear that aerobic exercise (of sufficient
intensity to elevate the heart rate significantly above resting
pulse rate for over 21 minutes) may significantly enhance stress
responsivity, especially in relation to stress related to lifestyle
or work.
In respect of mood states both aerobic and
anaerobic exercise can be associated with an elevation of mood
state, particularly for clinical samples, although it is likely
that more than one underlying mechanism may be implicated.
With regard to self-esteem the more specific
subdomains of perceived sport competence, physical condition,
attractive body and strength may be associated differentially with
behaviour in various sports. However, the literature gives little
guidance as to which forms of exercise may be beneficial to which
types of self-esteem.
With regard to premenstrual syndrome (PMS) the
evidence points to the benefits of exercise, with less strenuous
forms of non-competitive exercise most effective. The type of
exercise, its duration and length still await clarification.
It is very difficult to establish precise guidelines with regard
to the intensity and duration of exercise, partly because of
methodological difficulties inconsistencies across studies. Overall
three main factors are considered when explaining why more
definitive conclusions cannot yet be reached. Firstly, the research
base remains thin and primary data are not extensive. Secondly, it
is not yet clear how psychological and physiological processes and
functions interact in the determination of outcomes. Thirdly, the
primary mechanisms that underlie the relation between exercise and
psychological well-being remain poorly understood.
Methodology
Review article
Source of reference
British Journal of Sports
Medicine, 1998, 32, 111-120.
Web reference
http://bjsm.bmjjournals.com/