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A Cross-longitudinal Study of Physical Fitness in Ontario Dairy Farmers, Aged Fifty Years and Over

Published online by Cambridge University Press:  29 November 2010

C.D. Moore  and
S. Pfeiffer
C.D. Moore
Affiliation:
School of Human Biology, University oF Guelph, Guelph, Ontario N1G 2W1
S. Pfeiffer
Affiliation:
School of Human Biology, University oF Guelph, Guelph, Ontario N1G 2W1
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Abstract

To study the effects of occupational activity on age-related changes in fitness, 36 full time dairy farmers, aged 50–68years, were studied. Stature, weight, four skinfold thicknesses and hand grip strength were measured. Maximal oxygen consumption was estimated from the CAFT, a submaximal bench stepping test. Twenty-one of the subjects had been tested two years earlier as well. Approached cross-sectionally, the farmers show greater fat-free mass, higher grip strength values, and higher O2 max values than age-matched reference groups (STF and Nutrition Canada). Changes over two years in the sample subset include a marked decline in grip strength, anda decline in O2 which is consistent with that seen in other longitudinal studies. Hence, while initial fitness may be higher in this occupationally active group, the decline in function with age is comparable in magnitude to that seen in less active men.

Résumé

Cette étude a été mise au point dans le but d'examiner les effets produits par l'activité professionnelle sur les changements reliés à l'âge au niveau de la condition physique. Le groupe choisi comportait 16 fermiers oeuvrant à temps plein dans le domaine de l'industrie laitière, tous âgés de 50 à 65 ans. Les chercheurs ont mesuré la taille, le poids, l'épaisseur de quatre plis de chair et la force d'étreinte d'une main. Ils se sont basés sur le Physitest aérobie canadien, une épreuve d'endurance physique sous-maximale, pour évaluer la consommation maximale d'oxygène. Quelques 21 des participants avaient été soumis à ce test deux ans auparavant. En examinant les données d'une façon représentative, les chercheurs ont notés que les fermiers possédaient une masse sans matières grasses plus considérable, que leur force d'étreinte était plus puissante et que leur valeur maximale VO2 était plus élevé en comparaison avec des groupes de références contenant des personnes du même âge (STF et Nutrition Canada). Au cours de deux ans, les changements dénotés dans le groupe sous-ensemble incluent une diminution marquée au niveau de la force d'étreinte et une réduction du VO2. Ces changements se conforment aux observations notées dans d'autres études longitudinales. Par conséquent, tandis qu'à l'origine la forme physique peut être supérieure dans ce groupe actif professionnellement, la diminution fonctionnelle reliée à l'âge est néanmoins comparable en ampleur à celle démontrée par des hommes moins actifs.

Keywords

farmingphysical fitnessVO2 max
Type
Articles
Information
Canadian Journal on Aging / La Revue canadienne du vieillissement , Volume 6 , Issue 3 , Fall/Automne 1987 , pp. 189 - 198
Copyright
Copyright © Canadian Association on Gerontology 1987

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References

REFERENCES

Asmussen, E, Fruensgaard, K, Norgard, S. A follow-up longitudinal study of selected physiologic functions in former physical education students-after forthy vears. J Am Geriatrics Soc 1975; 13: 442–450.CrossRefGoogle Scholar
Bailey, DA, Shephard, R, Mirwald, R. Validation of self-administered home test of cardiorespiratory fitness. Can J Appl. Sport Sci 1976; 1: 67–78.Google Scholar
Bonen, A, Gardner, J, Primrose, J, Quigley, R, Smith, D.An evaluation of the Canadian Home Fitness Test. Can J Appl Sport Sci, 1977; 2: 133–136.Google Scholar
Borkan, GA, Norris, AH. Fat redistribution and the changing body dimensions of the adult male [Abstract]. Hum Biol 1977; 49: 495–514.Google ScholarPubMed
Borkan, GA, Hults De Gerzof, SG, Robbins, AH. Comparison of body composition in middle-aged and elderly males using computed tomography. Am J Phys Anthropol 1985; 66: 289–295.CrossRefGoogle ScholarPubMed
Bourliere, F: Ecology of human senescence. In Brocklehurst, JC, ed: Textbook of geriatric medicine and gerontology. Edinburgh, Churchill-Livingstone, 1973.Google Scholar
Bruce, RA. Exercise, functional capacity and aging—another viewpoint. Med Sci Sports 1984; 16: 8–13.Google ScholarPubMed
Buskirk, ER, Hodgson, JL. Age and aerobic power: the rate of change in men and women. Federation Proc., 1987; 46: 1824–1829.Google ScholarPubMed
Caspersen, CJ, Powell, KE, Christenson, G.M.Physical activity, exercise and physical fitness: definitions and distinctions for health-related research. Public Health Reports 1985; 100: 126–130.Google ScholarPubMed
Danneskiold-Samsoe, B, Koford, V, Munter, J, Grimby, G, Schnohr, P, Jensen, G. Muscle strength and functional capacity in 78–81 year-old men and women. Eur J of Appl Physiol Occup Physiol 1985; 52: 310–314.CrossRefGoogle Scholar
Dehn, MM, Bruce, RA. Longitudinal variations in maximal oxygen intake with age and activity. J Appl Physiol 1972; 33: 805–807.CrossRefGoogle ScholarPubMed
Department of National Health and Welfare. Standardized Test of Fitness—Operations Manual. Ottawa: Fitness and Amateur Sport, 1981.Google Scholar
Department of National Health and Welfare. Canadian Standardized Test of Fitness: Interim Updated Norms and Percentiles. Ottawa: Fitness and Amateur Sport, 1984.Google Scholar
Fitness and Amateur Sport. Fitness and Lifestyle in Canada. Ottawa: Fitness Canada, 1983: 12.Google Scholar
Friedlaender, JS, Costa, PT, Bosse, R, Elli, E, Rhoades, JG, Stoudt, HW. Longitudinal physique changes among healthy white veterans at Boston. Hum Biol 1977; 49: 541–558.Google ScholarPubMed
Hagberg, JM. Effect of training on the decline of VO2max with aging. Federation Proc.. Harrison AB. A longitudinal study of VO2max in aging males [Abstract] Med Sci Sports 1984; 16: 124–125.Google Scholar
Jette, M, Campbell, J, Mongeon, J, Routhier, R. The Canadian Home Fitness Test as a predictor of aerobic capacity. Can Med Assoc J 1976; 114: 680–682.Google ScholarPubMed
Kenney, RA. Physiology of Aging: A Synopsis. Chicago: Yearbook Medical, 1982: 42–54.Google Scholar
Milne, JS, Williamson, J.A longitudinal study of kyphosis in older people. Age and Ageing 1983; 12: 225–233.CrossRefGoogle ScholarPubMed
Montoye, HJ. Physical Activity and Health: An Epidemiologie Study of an Entire Community. Englewood Cliffs N.J.: Prentice-Hall, 1975; 20.Google Scholar
Moore, CD. A cross-longitudinal analysis of Ontario dairy farmers aged fifty years of age and over. Unpublished masters thesis. Guelph: University of Guelph, 1985.Google Scholar
Morgan, K, Hughes, AO, Philipp, R. Reliability of a test of cardiovascular fitness. IntJ Epidemiol 1984; 13: 32–37.CrossRefGoogle ScholarPubMed
Nutrition Canada. Anthropometry Report: Height, Weight and Body Dimensions. Ottawa: Department of National Health and Welfare, 1980.Google Scholar
Pageot, J.D.Inventory of Physical Fitness Programs and Services. Secretariat for Fitness in the Third Age, Ottawa, 1985.Google Scholar
Pfeiffer, S., Webb, B. Is farming good for you? Aspects offarm health and safety. Farming and the Rural Community in Ontario, Fuller, T., ed. Foundation for Rural Living, Toronto, 1985.Google Scholar
Pfeiffer, S, Graham, TE, Webb, RDG, Wilson, BA, Rivington-Moss, EG, Fischer Ingram, LM. Aspects of physical fitness and health in Ontario dairy farmers. Can J Public Health 1984; 75: 204–211.Google ScholarPubMed
Pomrehn, PR, Wallace, RB, Burmcister, LF. Ischaemic heart disease mortality in Iowa farmers: the influence of lifestyle. J Am Med Assoc 1982; 248; 248: 1073–1076.CrossRefGoogle ScholarPubMed
President's Council on Physical Fitness and Sports. Physical Fitness Research Digest. Series 1, No. 1. Washington D.C., 1971.Google Scholar
Robinson, S, Dill, DB, Tzankoff, SP, Wagner, JA, Robinson, DB. Longitudinal studies of aging in 37 men. J Appi Physiol 1975; 38: 263–267.CrossRefGoogle ScholarPubMed
Shephard, RJ. Physical activity and aging. London: Croom Helm, 1978: 1–55.Google ScholarPubMed
Shephard, RJ. Critical issues in the health of the elderly: the role of physical activity. Can J. Aging 1984, 3: 199–207.CrossRefGoogle Scholar
Shephard, RJ. Factors associated with population variation in physiological working capacity. Yearbook of Physical Anthropology 1985; 28: 97–122.CrossRefGoogle Scholar
Siegler, IC. Threats to external validity in survey research with the elderly; the effects of selective drop-out on health, morale, social relations and environmental circumstances (abstract). Unpublished doctoral dissertation. Syracuse University.Google Scholar
Steen, B, Isaksson, B, Svanborg, A. Body composition at 70 and 75 years of age: a longitudinal population study. J Clin Exper Gerontol 1979; 1: 185–200.Google Scholar
Stinchcombc, AL, Joncs, C, Shcatsley, PB. Nonrcsponse bias for attitude questions. Publ. Opin Q 45: 369–375.Google Scholar
Susanne, C. Individual age changes of the morphological characteristics. J Hum Evol 1977; 6: 181.CrossRefGoogle Scholar
Tomonaga, M. Histochemical and ultrastructural changes in senile human skeletal muscle. J Am Geriatr Soc 1977; 3: 125–131.CrossRefGoogle Scholar
Weiner, JS, Lourie, JA. Practical Human Biology. London: Academic, 1981: 11–27.Google Scholar
Zukel, WJ, Lewis, RH, Enterlinc, PE, Painter, RC, Ralston, LS, Fawcctt, RM, Meredity, AP, Peterson, B.A short-term community study of the epidemiology of coronary heart disease. A preliminary report on the North Dakota study. Am J Publ Health 1959; 49: 1630–1639.CrossRefGoogle ScholarPubMed