Muscular Strength Changes in Hospitalized Anorexic Patients After an Eight Week Resistance Training Program

Abstract

We investigated whether an eight week, light resistance program could increase the muscular strength of the knee and elbow extensors and flexors in a group of hospitalized anorexic patients compared to anorexic controls (AC) who did not participate in the training program, but received the same caloric intake, and non-anorexic exercisers (NAE) who undertook the resistance training program. After the resistance training program, the seven anorexic exercisers (AE) significantly increased the peak torque (PT) of their knee extensors (p < 0.001), flexors (p < 0.0001) and elbow flexors (p < 0.01). In comparison, the seven anorexic non-exercisers (anorexic controls, AC) and seven non-anorexic exercisers (NAE), who performed the same program, showed no significant increase in peak torque after the program (p > 0.05). The study has demonstrated that an eight week, light resistance program increases the knee and elbow strength of the hospitalized anorexic patients.

Key words

Anorexia nervosa - strength training - peak torque

References

• 1 Bachrach L, Guido D, Katzman D, Litt I, Marcus R. Decreased bone density in adolescent girls with anorexia nervosa.  Pediatrics. 1990;  86 440-447
• 2 Beumont P J, Al-Alami M, Youyz S. Relevance of a standard measurement of under nutrition to the diagnosis of Anorexia Nervosa: Use of Quetlet's body mass index (BMI).  Int J Eat Disord. 1988;  21 399-405
• 3 Beumont P J, Arthur B, Russell J D, Touyz S W. Excessive physical activity in dieting disorder patients: Proposals for a supervised exercise program.  Int J Eat Disord. 1994;  15 21-36
• 4 Bilanin J E, Blanchard M S, Russek-Cohen E. Lower vertebral bone density in male long distance runners.  Med Sci Sports Exerc. 1989;  21 66-70
• 5 Chilibeck P D, Sale D G, Webber C E. Exercise and bone mineral density.  Sports Med. 1995;  19 103-122
• 6 Deschenes M R, Kraemer W J. Performance and physiologic adaptations to resistance training.  Am J Phys Med Rehabil. 2002;  81 S3-16
• 7 Fleck S J. Cardiovascular adaptations to resistance training.  Med Sci Sports Exerc. 1988;  20 S146-151
• 8 Hartman D. Anorexia nervosa-diagnosis, aetiology, and treatment.  Postgrad Med J. 1995;  71 712-716
• 9 Kannus P. Isokinetic evaluation of muscular performance: implications for muscle testing and rehabilitation.  Int J Sports Med. 1994;  15 S11-18
• 10 Kraemer W J, Hakkinen K, Triplett-Mcbride N T, Fry A C, Koziris L P, Ratamess N A, Bauer J E, Volek J S, McConnell T, Newton R U, Gordon S E, Cummings D, Hauth J, Pullo F, Lynch J M, Fleck S J, Mazzetti S A, Knuttgen H G. Physiological changes with periodized resistance training in women tennis players.  Med Sci Sports Exerc. 2003;  35 157-168
• 11 Kraemer W J, Mazzetti S A, Nindl B C, Gotshalk L A, Volek J S, Bush J A, Marx J O, Dohi K, Gomez A L, Miles M, Fleck S J, Newton R U, Hakkinen K. Effect of resistance training on women's strength/power and occupational performances.  Med Sci Sports Exerc. 2001;  33 1011-1025
• 12 Kratz O, Roessner V. Change in muscle strength in patients with anorexia nervosa during inpatient treatment-a pilot study.  Z Kinder Jugendpsychiatr Psychother. 2003;  31 277-284
• 13 McLoughlin D M, Spargo E, Wassif W S, Newham D J, Peters T J, Lantos P L, Russell G F. Structural and functional changes in skeletal muscle in anorexia nervosa.  Acta Neuropathol. 1998;  95 632-640
• 14 Poehlman E T, Denino W F, Beckett T, Kinaman K A, Dionne I J, Dvorak R, Ades P A. Effects of endurance and resistance training on total daily energy expenditure in young women: A controlled randomized trial.  J Clin Endocrinol Metab. 2002;  87 1004-1009
• 15 Salisbury J, Levine A, Crow S, Mitchell J. Refeeding, metabolic rate, and weight gain in anorexia nervosa: a review.  Int J Eat Disord. 1995;  17 337-345
• 16 Suominen H. Physical activity and bone.  Ann Chir Gynaecol. 1988;  77 184-188
• 17 Szabo C P, Green K. Hospitalized anorexics and resistance training: impact on body composition and psychological well-being. A preliminary study.  Eat Weight Disord. 2002;  7 293-297
• 18 Szabo C P, TerreBlanche M. Hospitalised Anorexics- a preliminary evaluation of an in-patient program.  South Afr Med J. 1998;  88 312-318
• 19 Wilmore J H, Costill D L. Physiology of Sport and Exercise. Auckland; Human Kinetics 1994: 70-74