REFERENCES

Aalto, H. (1997) Force platform posturography. Methodological aspects and practical applications. Doctoral thesis, University of Helsinki, Helsinki.

Allum, J.H.J., Honegger, F. and Pfaltz, C.R. (1989) The role of stretch and vestibulo-spinal reflexes in the generation of human equilibriating reactions. Progress in Brain Research 80, 399-409.

Amiridis, I.G., Hatzitaki, V. and Arabatzi, F. (2003) Age-induced modifications of static postural control in humans. Neuroscience Letters 350, 137-140.

Aromaa, A., Heliövaara, M., Impivaara, O., Knekt, P., Maatela, J., Joukamaa, M., Klaukka, T., Lehtinen, V., Melkas, T., Mälkiä, E., Nyman, K., Paunio, I., Reunanen, A., Sievers, K., Kalimo, E. and Kallio, V. (1989) Terveys, toimintakyky ja hoidontarve Suomessa. Kansaneläkelaitos. Kansaneläkelait-oksen julkaisuja, Helsinki and Turku. AL 32.

Aruin, AS., Forrest, W.R. and Latash, M.L. (1998) Anticipatory postural adjustments in conditions of postural instability. Electroencephalography and Clinical Neurophysiology 109, 350-359.

Atkinson, G. and Nevill, A.M. (1998) Statistical methods for assessing measurement error (reliability) in variables relevant to Sports medicine. Sports Medicine 226, 217-238.

Aura, O. (1994) Kuntotestauksen perusteet. Liite r.y., Helsinki.

Baloh, R.W., Corona, S., Jacobson, K.M. Enrietto J.A. and Bell T. (1998) A prospective study of posturography in normal older people. Journal of the American Geriatrics Society 446, 438-443.

Baloh, R.W., Jacobson, K.M. and Socotch, T.M. (1993) The effect of aging on visual-vestibuloocular responses. Experimental Brain Research 95, 509-516.

Baumgartner, T.A. (1989) Norm-referenced measurement: reliability. In: Measurement concepts in physical education and exercise science. Eds: Safrit, M.J. and Wood T.E. Champaign IL: Human Kinetics Books. 45-72.

Belen'kii, V.Y., Gurfinkel', V.S. and Pal'tsev, Y.I. (1967) Elements of control of voluntary movements. Biofizika 12, 154-161.

Berg, K. (1989) Balance and its measure in the elderly: a review. Physiotherapy Canada 441, 240-246.

Berg, K.O., Wood-Dauphinee, S.L., Williams, J.T. and Maki, B. (1992) Measuring balance in the elderly: validation of an instrument. Canadian Journal of Public Health 83 (Suppl. 2), S7-11.

Bhattacharya, A., Succop, P., Kincl, L. and Clark C.S. (2003) Postural stability during task performance on elevated and/or inclined surfaces. International Journal of Occupational Safety and Ergonomics 33, 83-97.

Birmingham, T.B. (2000) Test-retest reliability of lower extremity functional instability measures. Clinical Journal of Sport Medicine 110, 264-268.

Bland, J.M. and Altman, D.G. (1986) Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1, 307-310.

Brady, R.A., Pavol, M.J., Owings, T.M. and Grabiner, M.D. (2000) Foot displacement but not velocity predicts the outcome of a slip induced in young subjects while walking. Journal of Biomechanics 333, 803-808.

Brandt, T., Arnold, F., Bles, W. and Kapteyn T.S. (1980) The mechanisms of physical height vertigo. I. Theoretical approach and psychophysics. Acta Oto-Laryngologica 889, 513-523.

Brandt, T., Paulus, W. and Straube, A. (1986) Vision and posture. In: Disorders of posture and gait. Eds: Bless, W. and Brandt, T. Amsterdam: Elsevier Science Publishers B.V. 157-175.

Brauer, S.G., Burns, Y.R. and Galley, P. (2000) A prospective study of laboratory and clinical measures of postural stability to predict community-dwelling fallers. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 555A:M, 469-476.

Brouwer, B., Culham, EG., Liston, R.A.L. and Grant, T. (1998) Normal variability of postural measures: implications for the reliability of relative balance performance outcomes. Scandinavian Journal of Rehabilitation Medicine 330, 131-137.

Carel, R.S., Korczyn, A.D. and Hochberg, Y. (1979) Age and sex dependency of the achilles tendon reflex. The American Journal of the Medical Sciences 2278, 57-63.

Cham, R., Redfern, M.S. (2001) Lower extremity corrective reactions to slip events. Journal of Biomechanics 334, 1439-1445.

Cham, R. and Redfern, M.S. (2002) Changes in gait when anticipating slippery floors. Gait Posture 15, 159-171.

Chiou, S., Bhattacharya, A., Lai, C-F. and Succop, P.A. (1998) Effects of environmental and task risk factors on workers´ perceived sense of postural sway and instability. International Journal of Occupational Safety and Ergonomics 11, 81-93.

Choy, N.L., Brauer, S. and Nitz, J. (2003) Changes in postural stability in women aged 20 to 80 years. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 558 A, 525-530.

Clark, M., Jackson, P.L. and Cohen, H.H. (1996) What you don't see can hurt you: understanding the role of depth perception in slip, trip and fall incidents. Ergonomics in Design 44(3), 16-21.

Clarkson, P.M. (1978) The relationship of age and level of physical activity with the fractionated components of patellar reflex time. The Journals of Gerontology 333, 650-656.

Cohn, T.E. and Lasley, D.J. (1985) Visual depth illusion and falls in the elderly. Clinics in Geriatric Medicine 11, 601-620.

Colledge, N.R., Cantley, P., Peaston, I., Brash H., Lewis S. and Wilson J.A. (1994) Ageing and balance: the measurement of spontaneous sway by posturography. Gerontology 40, 273-278.

Commissaris, D.A. and Toussaint, H.M. (1997a) Load knowledge affects low-back loading and control of balance in lifting tasks. Ergonomics 40, 559-575.

Commissaris, D.A. and Toussaint, H.M. (1997b) Anticipatory postural adjustments in a bimanual, whole body lifting task with an object of known weight. Human Movement Science 116, 407-431.

Committee for Standardization (1995). European standard EN 469: 1995: protective clothing for firefighters - requirements and test methods for protective clothing for firefighting. European Committee for Standardization, Brussels.

Cordo, P.J. and Nashner, L.M. (1982) Properties of postural adjustments associated with rapid arm movements. Journal of Neurophysiology 447, 287-302.

Corriveau, H., Hébert, R., Prince, F. and Raîche, M. (2000) Intrasession reliability of the "center of pressure minus center of mass" variable of postural control in the healthy elderly. Archives of Physical Medicine and Rehabilitation 881, 45-48.

Courtney, T.K., Sorock, G.S., Manning, D.P., Collins J.W. and Holbein-Jenny M.A. (2001) Occupational slip, trip, and fall-related injuries?can the contribution of slipperiness be isolated? Ergonomics 44, 1118-1137.

Crotts, D., Thompson, B., Nahom, M., Ryan, S. and Newton R.A. (1996) Balance abilities of professional dancers on select balance tests. The Journal of Orthopedics and Sports Physical Therapy 223, 12-17.

De Zwart, B.C.H., Frings-Dresen, M.H.W. and Van Duivenbooden, J.C. (2002) Test-retest reliability of the Work Ability Index questionnaire. Journal of Occupational Medicine 552, 177-181.

Diard, J-P., Aubin, F., May, D., Michel, M. and Gouteyron, J.F. (1997) Equitest and high performance patients. Revue de Laryngologie - Otologie - Rhinologie 1118, 307-310.

Diener, H.C. and Dichgans, J. (1986) Long loop reflexes and posture. In: Disorders of posture and gait. Eds: Bles, W. and Brandt, T. Amsterdam: Elsevier. 41-67.

Diener, H.C., Dichgans, J., Guschlbauer, B. and Bacher, M. (1986) Role of visual and static vestibular influences on dynamic posture control. Human Neurobiology 55, 105-113.

Diggle, P., Liang, K-Y., Zeger, S.L. (1994) Analysis of longitudinal data. Clarendon Press, Oxford.

Du Pasquier, R.A., Blanc, Y., Sinnreich, M., Landis, T., Burkhard, P. and Vingerhoets, F.J. (2003) The effect of aging on postural stability: a cross sectional and longitudinal study. Clinical Neurophysiology 333, 213-218.

Egan, W.E., Fisher, D.P., Gerber, L.D., Hatler, B.S., Ernst, G.P., Hall, C. and Henderson, N. (2001) Postural sway of subjects wearing the U.S. Army chemical protective ensemble after functional activity. Aviation, Space and Environmental Medicine 772, 831-835.

Ekdahl, C., Jarnlo, G.B. and Andersson, S.I. (1989) Standing balance in healthy subjects: evaluation of a quantitative test battery on a force platform. Scandinavian Journal of Rehabilitation Medicine 221, 187-195.

Era, P., Heikkinen, E. (1985) Postural sway during standing and unexpected disturbance of balance in random samples of men of different ages. Journal of Gerontology 440, 287-295.

Era, P., Heikkinen, E., Gause-Nilsson, I., Schroll, M. (2002) Postural balance in elderly people: changes over a five-year follow-up and its predictive value for survival. Aging Clinical and Experimental Research 114 (Suppl. 3), 37-46.

Era, P., Schroll, M., Ytting, H., Gause-Nilsson, I., Heikkinen, E. and Steen, B. (1996) Postural balance and its sensory-motor correlates in 75-year-old men and women: a cross-national comparative study. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 551A:M 53-63.

Fleiss, J.L. (1986) Reliability of measurement. In: The design and analysis of clinical experiments. Ed: Fleiss, J.L. New York, NY: John Wiley & Sons, Inc. 1-32.

Gantchev, G.N. and Dunev, S.T. (1978) Study of the body sway of workers at high buildings. Agressologie. 19B, 67-68.

Gauchard, G., Chau, N., Mur, J.M., Perrin, P. (2001) Falls and working individuals: role of extrinsic and intrinsic factors. Ergonomics 44, 1330-1339.

Gill, J., Allum, J.H.J., Carpenter, M.G., Held-Ziolkowska, M., Adkin, A.L., Honegger, F. and Pierchala, K. (2001) Trunk sway measures of postural stability during clinical balance tests: effects of age. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 556A:M, 438-447.

Gittings, N.S. and Fozard, J.L. (1986) Age-related changes in visual acuity. Experimental Gerontology 221, 423-433.

Gledhill, N. and Jamnik, V.K. (1992a) Characterization of the physical demands of firefighting. Canadian Journal of Sport Sciences 117, 207-213.

Gledhill, N. and Jamnik, V.K. (1992b) Development and validation of fitness screening protocol for firefighter applicants. Canadian Journal of Sport Sciences 17, 199-206

Grönqvist, R. (1995) A dynamic method for assessing pedestrian slip resistance. People and Work. Research Reports 2. Doctoral thesis, Finnish Institute of Occupational Health, Helsinki.

Grönqvist, R., Hirvonen, M. and Tohv, A. (1999) Evaluation of three portable floor slipperiness testers. International Journal of Industrial Ergonomics 225, 85-95.

Hageman, P.A., Leibowitz, J.M. and Blanke, D. (1995) Age and sex effects on postural control measures. Archives of Physical Medicine and Rehabilitation 76, 961-965.

Hansen, M.S., Dieckmann, B., Jensen, K. and Jakobsen, B.W. (2000) The reliability of balance tests performed on the kinesthetic ability trainer (KAT 2000). Knee Surgery, Sports Traumatology, Arthroscopy 88, 180-185.

Hasan, S.S., Robin, D.W., Szurkus, D.C., Ashmed, D.H., Peterson, S.W. and Shiavi, R.G. (1996a) Simultaneous measurement of body center of pressure and center of gravity during upright stance. Part I: Methods. Gait Posture 4, 1-10.

Hasan, S.S., Robin, D.W., Szurkus, D.C., Ashmed, D.H., Peterson, S.W. and Shiavi, R.G. (1996b) Simultaneous measurement of body center of pressure and center of gravity during upright stance. Part II: Amplitude and Frequency Data. Gait Posture 4, 11-20.

Hertel, J., Miller, S.J. and Denegar, C.R. (2000) Intratester and intertester reliability during the star excursion balance tests. Journal of Sport Rehabilitation 9, 104-116.

Hirvonen, M., Leskinen, T., Grönqvist, R. and Saario, J. (1994) Detection of near accidents by measurement of horizontal acceleration of the trunk. International Journal of Industrial Ergonomics 114, 307-314.

Hirvonen, T.P., Hirvonen, M. and Aalto, H. (2002) Postural control measured by visual feedback posturography. Journal for Oto-Rhino-Laryngology and its Related Specialties 664,186-190.

Hofmann, C. (1998) The implementation of normative data in a force patform based postural balance measurement system [Diplomarbeit]. Zwickau: Westsächsische Hochschule Zwickau (FH), Fachbereich Physikalische Technik/Informatik.

Horak, F.B. (1987) Clinical measurement of postural control in adults. Physical Therapy 667, 1881-1885.

Horak, F.B. and Nashner, L.M. (1986) Central programming of postural movements: adaptation to altered support surgace configurations. Journal of Neurophysiology 555, 1369-1381.

Horak, F.B., Nashner, L.M. and Diener, H. (1990) Postural strategies associated with somatosensory and vestibular loss. Experimental Brain Research 82,167-177.

Horak, F.B. and Shubert, C. (1994) The role of the vestibular system in postural control. In: Vestibular rehabilitation. Ed: Herdman, S. New York: FA Davis. 22-46.

Hsiao, H. and Simeonov, P. (2001) Preventing falls from roofs: a critical review. Ergonomics 444, 537-561.

Hufschmidt, J., Dichgans, J., Mauritz, K-H. and Hufschmidt, M. (1980) Some methods and parameters of body sway quantification and their neurological applications. Archiv fur Psychiatrie und Nervenkrankheiten 2228,135-150.

Hytönen, M., Pyykkö, I., Aalto, H. and Starck, J. (1993) Postural control and age. Acta Oto-Laryngologica 1113, 119-122.

Ilmarinen, R. and Mäkinen, H. (1992) Heat strain in fire-fighting drills. In: Proceedings of the Fifth International Conference on Environmental Ergonomics. Eds: Lotens, W.A. and Havenith, G. Maastricht: TNO-Institute. 90-91.

Ilmarinen, J., Tuomi, K., Eskelinen, L., Nygard, C.H., Huuhtanen, P. and Klockars, M. (1991) Background and objectives of the Finnish research project on aging workers in municipal occupations. Scandinavian Journal of Work,Eenvironment & Health 117(Suppl. 1), 7-11.

Izquierdo, M., Aguado, X., Gonzalez, R., Lopez, J.L. and Häkkinen, K. (1999) Maximal and explosive force production capacity and balance performance in men of different ages. European Journal of Applied Physiology 779, 260-267.

Johansson, R.S. and Vallbo, Å.B. (1980) Spatial properties of the population of mechanoreceptive units in the glabrous skin of the human hand. Brain Research 184, 353-366.

Johnson, L-G. and Hawkins, J.E. (1972) Sensory and neural degereration with aging, as seen in microdissections of the inner ear. The Annals of Otology, Rhinology, and Laryngology 881, 179-193.

Juntunen, J., Matikainen, E., Ylikoski, J., Ylikoski, M., Ojala, M. and Vaheri, E. (1987) Postural body sway exposure to high- energy impulse noise. Lancet 2, 261-264.

Karlsson, A. and Frykberg, G. (2000) Correlations between force plate measures for assessment of balance. Clinical Biomechanics 115, 365-369.

Kemmlert, K. and Lundholm, L. (2001) Slips, trips and falls in different work groups - with reference to age and from a preventive perspective. Applied Ergonomics 332, 149-153.

Kincl, L.D., Bhattacharya, A., Succop, P.A. and Clark, C.S. (2002) Postural sway measurements: a potential safety monitoring technique for workers wearing personal protective equipment. Applied Occupational and Environmental Hygiene 117, 256-266.

King, P.M., Tuckwell, N. and Barrett, T.E. (1998) A Critical review of functional capacity evaluations. Physical Therapy 778, 852-866.

Kinzey, S.J. and Armstrong, C.W. (1998) The reliability of the star-excursion test in assessing dynamic balance. The Journal of Orthopedic and Sports Physical Therapy 22, 356-360

Kohen-Ratz, R., Kohen-Ratz, A., Erel, J., Davidson, B., Caine, Y. and Froom, P. (1994) Postural control in pilots and candidates for flight training. Aviation, Space and Environmental Medicine 665, 323-326.

Kollegger, H., Baumgartner, C., Wöber, C., Oder, W. and Deecke, L. (1992) Spontaneous body sway as a function of sex, age, and vision: posturographic study in 30 healthy adults. European Neurology 332, 253-259.

Kuo, A.D. and Zajac, F.E. (1993) Human standing posture: multi-joint movement strategies based on biomechanical constraints. Progress in Brain Research 97, 349-358.

Kuo, W., Bhattacharya, A., Succop, P. and Linz, D. (1996) Postural stability assessment in sewer workers. Journal of Occupational and Environmental Medicine 338, 27-34.

Lamb, K. (1998) Test-retest reliability in quantitative physical education research: a commentary. European Physical Education Review 4, 145-152.

Laughton, C.A., Slavin, M., Katdare, K, Nolan, L., Bean, J.F., Kerrigan, D.C., Phillips, E., Lipsitz, L.A. and Collins, J.J. (2003) Aging, muscle activity, and balance control: physiologic changes associated with balance impairment. Gait Posture 18, 101-108.

Leamon, T.B. and Li, K.W. (1991) Load carrying and slip length. Proceedings of the Human Factors Society, 35th Annual Meeting; 1991 Sept 2-6; San Francisco. Santa Monica, California: Human Factors Society. 1159-1161.

Le Clair, K. and Riach, C. (1996) Postural stability measures: what to measure and how long. Clinical Biomechanics 111, 176-178.

Leonard, C.T., Matsumoto, T., Diedrich, P.M. and McMillan, J.A. (1997) Changes in neural modulation and motor control during voluntary movement of older individuals. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 552A:M, 320-325.

Leroux, A., Fung, J. and Barbeau, H. (2002) Postural adaptation to walking on inclined surfaces: I. Normal strategies. Gait Posture 15, 64-74.

Lord, S.R. and Clark, R.D. (1996) Simple physiological and clinical tests for the accurate prediction of falling in older people. Gerontology 42, 199-203.

Louhevaara, V., Soukainen, J., Lusa, S., Tulppo, M., Tuomi, P. and Kajaste, T. (1994) Development and evaluation of a test drill for assessing physical work capacity of fire-fighters. International Journal of Industrial Ergonomics 113, 139-146.

Louhevaara, V., Tuomi, T., Korhonen, O. and Jaakkola, J. (1984) Cardiorespiratory effects of respiratory protective devices during exercise in well-trained men. European Journal of Applied Physiology 552, 340-345.

Lusa, S. (1994) Job demands and assessment of the physical work capacity of fire fighters. Studies in Sport, Physical Education and Health 33. Doctoral thesis, University of Jyväskylä, Jyväskylä.

Lusa, S., Louhevaara, V. and Kinnunen, K. (1994) Are the job demands on physical work capacity equal for young and aging firefighters? Journal of Occupational Medicine 336, 70-74.

Magnusson, M., Enbom, H., Johansson, R. and Pyykkö, I. (1990) Significance of pressor input from the human feet in aterior-posterior postural control. The effect of hypothermia on vibration-induced body-sway. Acta Oto-Laryngologica 110, 182-188.

Maki, B.E., Holliday, P.J. and Fernie, G.R. (1990) Aging and postural control. A comparison of spontaneous- and induced-sway balance tests. Journal of the American Geriatrics Society 338, 1-9.

Marigold, D.S. and Patla, A.E. (2002) Strategies for dynamic stability during locomotion on a slippery surface: effects of prior experience and knowledge. Journal of Neurophysiology 888, 339-353.

Massion, J. (1994) Postural control system. Current Opinion in Neurobiology 4, 877-887.

Matheson, A.J., Darlington, C.L. and Smith, P.F. (1999) Further evidence for age-related deficts in human postural function. Journal of Vestibular Research: Equilibrium & Orientation 99, 261-264.

McComas, A.J. (1996) Skeletal muscle. Human Kinetics, Champaign, IL.

Metitur (2001) In Good Balance, user's manual. Version 2.54. Metitur Oy, Jyväskylä. See also http://www.metitur.com

Misner, J.E., Boileau, R.A. and Plowman, S.A. (1989) Development of placement tests for firefighting. Applied Ergonomics 220, 218-224.

Monsell, E.M., Furman, J.M., Herdman, S.J., Konrad, H.R. and Shepard, N.T. (1997) Computerized dynamic platform posturography. Otolaryngology - Head and Neck Surgery 1117, 394-398.

Mouchnino, L., Aurenty, R., Massion, J. and Pedotti, A. (1992) Coordination between equilibrium and head-trunk orientation during leg movement: a new strategy built up by training. Journal of Neurophysiology 667, 1587-1598.

Mustalampi, S., Era, P., Kiviranta, I. and Selänne, H. (2003) Test-retest reliability of postural stability tests in uninjured subjects and in patients after ACL reconstruction. In: Abstracts of 8th Annual Congress of European College of Sport Science; 2003 Jul 9-12; Salzburg, Austria. Eds: Müller, E., Schwameder, H., Zallinger, G. and Fastenbauer V. 18.

Nashner, L.M. (1997) Physiology of balance, with special reference to the healthy elderly. In: Gait disorders of aging: falls and therapeutic strategies. Eds: Masdeu, J.C., Sudarsky, L. and Wolfson, L. Philadelphia: Lippincott-Raven. 37-53.

Niinimaa, V. and McAvoy, T. (1983) Influence of exercise on body sway in the standing rifle shooting position. Canadian Journal of Applied Sport Sciences 88, 30-33.

Noback, C.R. and Demarest, R.J. (1981) The human nervous system. Basic principles of neurobiology. McGraw-Hill, Tokyo.

Nordahl, S.H.G., Aasen, T., Dyrkorn, B.M., Eidsvik, S. and Molvaer, O.I. (2000) Static stabilometry and repeated testing in a normal population. Aviation, Space and Environmental Medicine 771, 889-893.

Okada, S., Hirakawa, K., Takada, Y. and Kinoshita, H. (2001) Age-related differences in postural control in humans in response to a sudden deceleration generated by postural disturbance. European Journal of Applied Physiology 885, 10-18.

O'Neill, D.E., Gill-Body, K.M. and Krebs, D.E. (1998) Posturography changes do not predict functional performance changes. The American Journal of Otology 119, 797-803.

Pajala, S., Era, P., Koskenvuo, M., Kaprio, J., Tolvanen, A., Heikkinen, E., Tiainen, K. and Rantanen, T. (2004) Contribution of genetic and environmental effects to postural balance in older female twins. Journal of Applied Physiology 996, 308-315.

Pan, C.S., Chiou, S. and Hendricks, S. (2003) The effect of drywall lifting method on workers' balance in a laboratory-based simulation. International Journal of Occupational Safety and Ergonomics 33, 235-249.

Panzer, V.P., Bandinelli, S. and Hallett, M. (1995) Biomechanical assesment of quiet standing and changes associated with aging. Archives of Physical Medicine and Rehabilitation 76, 151-157.

Parnianpour, M., Frankel, V.H. and Nordin, M. (1989) Safety and older workers in the workplace. In: Advances in industrial ergonomics and safety I. Ed: Mital, A. London: Taylor and Francis. 367-374.

Patla, A.E. (1997) Understanding the roles of vision in the control of human locomotion. Gait Posture 5, 54-69.

Patla, A., Frank, J. and Winter, D. (1990) Assessment of balance control in the elderly: major issues. Physiotherapy Canada 442, 89-97.

Paulus, W.M., Straube, A. and Brandt, T.H. (1984) Visual stabilization of posture. Physiological stimulus characteristics and clinical aspects. Brain 107, 1143-1163.

Pendergrass, T.L., Moore, J.H. and Gerber, J.P. (2003) Postural control after a 2-mile run. Military Medicine 1168, 896-903.

Perrin, P.P., Jeandel, C., Perrin, C.A. and Béné, M.C. (1997) Influence of visual control, conduction, and central integration on static and dynamic balance in healthy older adults. Gerontology 43, 223-231.

Peterson, B. and Harrell, F. (1990) Partial proportional odds models for ordinal response variables. Applied Statistics 339, 205-217.

Podsiadlo, D. and Richardson, S. (1991) The timed "Up & Go": a test of basic functional mobility for frail elderly persons. Journal of the American Geriatrics Society 339, 142-148.

Pohjonen, T. (2001a) Age-related physical fitness and the predictive values of fitness tests for work ability in home care work. Journal of Occupational and Environmental Medicine 443, 723-739.

Pohjonen, T. (2001b) Perceived work ability and physical capacity of home care workers. Effects of the physical exercise and ergonomic intervention on factors related to work ability. Publications D. Medical Sciences. Doctoral thesis, University of Kuopio, Kuopio. 260.

Pohjonen, T., Liimatainen, M., Toikka, T. and Lindholm, H. (2003) Työn kuormitustekijöiden hallinnan kehittäminen vanhusten laitoshoidossa. Loppuraportti 2003. Helsinki: Helsingin kaupunki ja Työterveyslaitos.

Pokorski, J., Niteck, J. and Ilmarinen, J. (2004) Work ability index in fire fighters and medical doctors. In: Past, present and future of work ability. People and Work Research Reports 65. Eds: Ilmarinen, J. and Lehtinen, S. Helsinki: Finnish Institute of Occupational Health. 106-113.

Pollock, A.S., Durward, B.R., Rowe, P.H. and Paul, J.P. (2000) What is balance? Clinical Rehabilitation 114, 402-406.

Pollock, M. and Wilmore, J. (1990) Exercise in health and disease. Evaluation and prescription for prevention and rehabilitation. 2nd edition. W.B. Saunders Company, Philadelphia.

Punakallio, A., Louhevaara, V. and Lusa-Moser, S. (1997a) Evaluation of a functional test for assessing dynamic balance of fire fighters. In: From experience to innovation. Eds: Seppälä, P., Luopajärvi, T., Nygård, C-H. and Mattila, M. Proceedings of the 13th Triennial Congress of the International Ergonomics Association; 1997 Jun 29-Jul 4; Tampere, Helsinki. Finnish Institute of Occupational Health 4. 393-395.

Punakallio, A., Louhevaara, V., Lusa-Moser, S. and Korhonen, O. (1997b) Work ability and physical fitness of fire fighters in different age groups. In: From experience to innovation. Eds: Seppälä, P., Luopajärvi, T., Nygård, C-H. and Mattila, M. Proceedings of the 13th Triennial Congress of the International Ergonomics Association; 1997 June 29-July 4, Tampere, Helsinki. Finnish Institute of Occupational Health 5, 75-77.

Punakallio, A., Lusa-Moser, S., Louhevaara, V., Viikari-Juntura, E. Ilmarinen, R., Ollila, J., Korhonen, O., Luukkonen, R. and Lindqvist-Virkamäki, S. (1999) Health, physical and mental capacity of fire fighters in different age groups. In: FinnAge - respect for the aging: action programme to promote health, work ability and well-being of aging workers in 1990-96. People and work. Research reports 26. Eds: Ilmarinen, J. and Louhevaara, V. Helsinki. Finnish Institute of Occupational Health. 117-127.

Prochazka, A. and Hullinger, M. (1983) Muscle afferent function ant its significance for muscle control mechanism during voluntary movements in cat, monkey and man. Advances in Neurology 339, 93-132.

Prochazka, A. and Wand, P. (1980) Tendon organ discharge during voluntary movements in cats. The Journal of Physiology 303, 385-390.

Pyykkö, I., Aalto, H., Hytönen, M., Starck J., Jäntti, P., Ramsay, H. (1988) Effect of age on postural control. In: Posture and gait: development, adaptation and modulation. Proceedings of the 9th International Symposium on Postural and Gait Research; 1988 May 29 - June 1; Marseille. Amsterdam-New York-Oxford. Eds: Amblard, B., Berthoz, A. and Clarac, F. Excerpta Medica. 95-104.

Pyykkö, I., Jäntti, P. and Aalto, H. (1990) Postural control in elderly subjects. Age Ageing 19, 215-221.

Räty, H.P., Impivaara, O. and Karppi, S-L. (2002) Dynamic balance in former elite male athletes and in community control subjects. Scandinavian Journal of Medicine & Science in Sports 112, 111-116.

Rankin, J.K., Woollacott, M.H., Shumway-Cook, A. and Brown, L.A. (2000) Cognitive influence on postural stability: a neuromuscular analysis in young and older adults. The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences 555A:M, 112-119.

Ratzon, N., Froom, P., Leikin, E., Kristal-Boneh, E. and Ribak, J. (2000) Effect of exposure to lead on postural control in workers. Occupational and Environmental Medicine 557, 201-203.

Redfern, M.S., Cham, R., Gielo-Perczak, K. Gronqvist, R., Hirvonen, M., Lanshammar, H., Marpet, M., Pai, C.Y. and Powers, C. (2001 Biomechanics of slips. Ergonomics 44, 1138-1166.

Rinne, M.B., Pasanen, M.E., Miilunpalo, S.I. and Oja, P. (2001) Test-retest reproducibility and inter-rater reliability of a motor skill test battery for adults. International Journal of Sports Medicine 222, 192-200.

Robbins, S., Waked, E., Allard, P., McClaran, J. and Krouglicof, N. (1997) Foot position awareness in younger and older men - the influence of footwear sole properties. Journal of the American Geriatrics Society 445, 61-66.

Røgind, H., Lykkegaard, J.J., Bliddal, H. and Danneskiold-Samsøe, B. (2003) Postural sway in normal subjects aged 20-70 years. Clinical Physiology and Functional Imaging 223, 171-176.

Runge, C.F., Schupert, C.L., Horak, F.B. and Zajac, F.E. (1998) Role of vestibular information in initation of rapid postural responses. Experimental Brain Research 122, 403-412.

Runge, C.F., Shubert, C.L., Horak, F.B. and Zajac, F.E. (1999) Ankle and hip postural strategies defined by joint torques. Gait Posture 10, 161-170.

Rutenfrantz, J. (1981) Arbeitsmedizinische aspekte dess stress-problems. In: Theorien, Untersuchungen, Massuahmen. Ed: Nitsch, J.R. Bern-Stuttgart-Wien:Verlag Hans Huber. 379-390.

Samo, D.G., Bahk, J.K. and Gerkin, R.D. (2003) Effect of firefighter masks on monocular and binocular peripheral vision. Journal of Occupational and Environmental Medicine 445, 428-432.

SAS Institute (1989) SAS user's guide, Version 6. 4th ed. Cary, NC: SAS Institute.

SAS Institute (1999) SAS user's guide, Version 8. Cary, NC: SAS Institute.

Shumway-Cook, A. and Woollacott, M.H. (1995) Motor control: Theory and Practical Applications. 1st ed. Baltimore, MD: Williams & Wilkins. 119-142.

Shumway-Cook, A. and Woollacott, M. (2000) Attentional demands and postural control: the effect of sensory context. The Journals of Gerontology Series A, Biological Sciences and Medical Sciences 555A:M, 10-16.

Shumway-Cook, A., Woollacott, M., Kerns, K.A. and Baldwin, M. (1997) The effects of two types of cognitive tasks on postural stability in older adults with and without a history of falls. The Journals of Gerontology Series A, Biological Sciences and Medical Sciences 552A:M, 232-240.

Seliga, R., Bhattacharya, A., Succop, P., Wickstrom, R., Smith, D. and Willeke, K. (1991) Effect of work load and respirator wear on postural stability, heart rate, and perceived exertion. American Industrial Hygiene Association Journal 552, 417-422.

Shimada, H., Obuchi, S., Kamide, N., Shiba, Y., Okamoto, M. and Kakurai, S. (2003) Relationship with dynamic balance function during standing and walking. American Journal of Physical Medicine & Rehabilitation / Association of Academic Physiatrists 882, 511-516.

Sihvonen, S., Hofmann, C. and Era, P. (1998) Development of postural abilities across the life span parallels changes in muscle strength. In: Proceedings of the International Conference on Weightlifting and Strength Training, 1998 Nov 10-12. Lahti, Finland. Ed: Häkkinen, K. 215-216.

Simeonov, P. and Hsiao, H. (2001) Height, surface firmness, and visual reference effects on balance control. Injury Prevention 77(Suppl. 1), i50-53.

Simeonov, P.I., Hsiao, H., Dotson, B.W. and Ammons, D.E. (2003) Control and perception of balance at elevated and sloped surfaces. Human Factors 445(1), 136-147.

SPSS Inc.(1997) SPSS advanced statistics 7.5. Chicago IL: SPSS Inc.

Starck, J., Pyykkö, I., Aalto, H. and Pekkarinen, J. (1993) Measurements of postural stability: development of a force platform and some excitation systems. Medical Progress Through Technology 118, 209-215.

Strandberg, L. and Lanshammar, H. (1981) The dynamics of slipping accidents. Journal of Occupational Accidents 3, 153-162.

Stelmach, G.E. and Sirica. A. (1987) Ageing and proprioception. Age 9, 99-103.

Stelmach, G.E., Teasdale, N., Di Fabio, R.P. and Phillips, J. (1989) Age related decline in postural control mechanisms. International Journal of Aging and Human Development 29, 205-223.

Straube, A., Bötzel, K., Hawken, M., Paulus W., Brandt, T. (1988) Postural control in the elderly: differential effects of visual, vestibular and somatosensory input. In: Posture and Gait: Development, adaptation and modulation. Proceedings of the 9th International Symposium on Postural and gait research 1988, 29 May - 1 June, Marseille. Amsterdam. Eds: Amblard, B., Berthoz, A., Clarac, F. Excerpta Medica 105-114.

Suni, J. (2000) Health-related fitness test battery for middle-aged adults with emphasis on musculoskeletal and motor tests. Studies in Sport, Physical Education and Health 66. Doctoral thesis, University of Jyväskylä, Jyväskylä.

Takala, E-P., Korhonen, I. and Viikari-Juntura, E. (1997) Postural sway and stepping response among working population: reproducibility, long-term stability, and associations with symptoms of the low back. Clinical Biomechanics 112, 429-437.

Takala, E-P. and Viikari-Juntura, E. (2000) Do functional tests predict low back pain? Spine 25, 2126-2132.

Tang, P-F., Woollacott, M.H. and Chong, R.K.Y. (1998) Control of reactive balance adjustments in perturbed human walking: roles of proximal and distal postural muscle activity. Experimental Brain Research 119, 141-152.

Teasdale, N. and Simoneau, M. (2001) Attentional demands for postural control: the effects of aging and sensory reintegration. Gait Posture 14, 203-210.

Tilastokeskus. (2002) Työtapaturmat 2000. Työmarkkinat 2002;14.

Tilastokeskus. (2003) Työvoimatutkimus. Helsinki: Tilastokeskus; 2003.

Tilastokeskus. Palo- ja rakennusmiesten liukastumis-, kompastumis-, kaatumis- ja putomistapaturmatilas-tot vuosilta 1996-2001.

Toppila, E. and Pyykkö, I. (2000) Chaotic model of postural stability - a position and velocity dependent system? Automedica 119, 115-134.

Toussaint, H.M., Commissaris, D.A.C.M., Beek, P.J. (1997) Anticipatory postural adjustments in the back and leg lift. Medicine and Science in Sports and Exercise 29, 1216-1224.

Tsigilis, N., Zachopoulou, E. and Mavridis, T.H. (2001) Evaluation of the specificity of selected dynamic balance tests. Perceptual and Motor Skills 92, 827-833.

Tuomi, K., Ilmarinen, J., Eskelinen, L., Järvinen, E., Toikkanen, J. and Klockars, M. (1991) Prevalence and incidence of diseases and work ability in different work categories of municipal occupations. Scandinavian Journal of Work, Environment & Health 117(Suppl. 1), 67-74.

Tuomi, K., Ilmarinen, J., Jahkola, A., Katajarinne, L. Tulkki, A. (1998) Work ability index. Helsinki: Finnish Institute of Occupational Health. Occupational Health Care 19.

Tuomi, K., Wägar, G., Eskelinen, L., Järvinen, E., Huuhtanen, P., Suurnäkki, T., Fahlström, P., Aalto, L. and Ilmarinen, J. (1985) Terveys, työkyky ja työolot kunnallisissa ammattiryhmissä. Työterveyslaitoksen tutkimuksia. 95-132.

Viitasalo, J., Viljanen, T. and Komi, P. (1977) Dynamometers for measurement of isometric trunk and leg forces. Jyväskylä: Univ. of Jyväskylä. Research Reports from the Department of Biology of Physical Activity 22.

Viitasalo, J.T., Era, P., Leskinen, A-L. and Heikkinen, E. (1985) Muscular strength profiles and anthropometry in random samples of men aged 31-35, 51-55 and 71-75 years. Ergonomics 228, 1563-1574.

Vouriot, A., Gauchard, G.C., Chau, N., Benamghar, L., Lepori, M.L., Mur, J.M. and Perrin, P.P. (2004) Sensorial organisation favouring higher visual contribution is a risk factor of falls in an occupational setting. Journal of Neuroscience Research 448, 239-247.

Waked, E., Robbins, S. and McClaran, J. (1997) The effect of footwear midsole hardness and thickness on proprioception and stability in older men. Journal of Testing and Evaluation 25, 143-149.

Williford, H.N., Duey, W.J., Olson, M.S., Howard, R. and Wang, N. (1999) Relationship between fire suppression tasks and physical fitness. Ergonomics 42, 1179-1186. Winter, D.A. (1995) Human balance and posture control during standing and walking. Gait Posture 3, 193-214.

Woollacott, M.H., Shumway-Cook, A. and Nashner, L.M. (1986) Aging and posture control: changes in sensory organization and muscular coordination. International Journal of Aging & Human Development 223, 97-114.

Woollacott, M.H. and Tang, P-F. (1997) Balance control during walking in the older adult: research and its implications. Physical Therapy 777, 646-660.

You, J-Y., Chou, Y-L., Lin, C-J. and Su, F-C. (2001) Effect of slip on movement of body center of mass relative to base of support. Clinical Biomechanics 116, 167-173.

Zelnik, S.D., McKay, R.T. and Lockey, J.E. (1994) Visual field loss while wearing full-face respiratory protection. American Industrial Hygiene Association Journal 555, 315-321.

Zettel, J.L., McIlroy, W.E. and Maki, B.E. (2002) Can stabilizing the features of rapid triggered stepping reactions be modulated to meet environmental constraints? Experimental Brain Research 145, 297-308.

Zinzen, E., Caboor, P., Van-Roy, P. and Clarys, J.P. (1996) Testing motor physical fitness in occupational situations using the eurofit test battery. Abstracts of 1st Annual Congress in Sport Science in the European Perspective; 1996 May 28-31; Nice, France 814-815.