Biomaterial Database

Are there different determinants of the frequency, intensity, and duration of physical activity? 1994

K S Courneya, and E McAuley

Faculty of Physical Education, University of Calgary, Alberta, Canada.

The authors of this study explored whether different determinants exist for each of the three components of physical activity (frequency, intensity, and duration). The theoretical model they used was a modified version of the theory of planned behavior. Undergraduate volunteers (N = 170) completed an initial questionnaire and provided self-reports 2 and 4 weeks later of their physical activity during the interval. Hierarchical regression analyses indicated that both intention and self-efficacy explained unique variance in frequency and intensity, but only intention explained unique variance in duration. Further hierarchical regression analyses showed that self-efficacy contributed unique variance to all three components of intention, whereas attitude was implicated only in intended frequency and duration, and affect only in intended intensity. Possible explanations for the emergence of different determinants of the three components are discussed, and directions for future research are suggested.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009042	Motivation	Those factors which cause an organism to behave or act in either a goal-seeking or satisfying manner. They may be influenced by physiological drives or by external stimuli.	Incentives,Disincentives,Expectations,Disincentive,Expectation,Incentive,Motivations
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000339	Affect	The feeling-tone accompaniment of an idea or mental representation. It is the most direct psychic derivative of instinct and the psychic representative of the various bodily changes by means of which instincts manifest themselves.	Mood,Affects,Moods
D001294	Attitude to Health	Public attitudes toward health, disease, and the medical care system.	Health Attitude,Attitude, Health,Attitudes, Health,Health Attitudes,Health, Attitude to
D012649	Self Concept	Persons' view of themselves.	Self Esteem,Self Perception,Self Confidence,Self-Perception,Concept, Self,Confidence, Self,Esteem, Self,Perception, Self,Perceptions, Self,Self Esteems,Self Perceptions,Self-Perceptions
D015444	Exercise	Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure.	Aerobic Exercise,Exercise, Aerobic,Exercise, Isometric,Exercise, Physical,Isometric Exercise,Physical Activity,Acute Exercise,Exercise Training,Activities, Physical,Activity, Physical,Acute Exercises,Aerobic Exercises,Exercise Trainings,Exercise, Acute,Exercises,Exercises, Acute,Exercises, Aerobic,Exercises, Isometric,Exercises, Physical,Isometric Exercises,Physical Activities,Physical Exercise,Physical Exercises,Training, Exercise,Trainings, Exercise