Korean Diabetes J.  2009 Dec;33(6):511-517. 10.4093/kdj.2009.33.6.511.

Relationship of Maximal Muscle Strength with Body Mass Index and Aerobics Capacity in Type 2 Diabetic Patients

• Kwon HR
• Han KA
• Ku YH
• Ahn HJ
• Koo BK
• Min KW

• KMID: 2298057
• DOI: http://doi.org/10.4093/kdj.2009.33.6.511

Abstract

BACKGROUND
Combination fitness regimens (including aerobic and resistance exercises) are effective for improving cardio-respiratory fitness, reducing visceral fat and increasing insulin sensitivity in diabetic patients. The combination exercise intensity that a patient is capable of is limited by his or her aerobic capacity and one repetition maximum (1RM). We investigated the relationships between 1RM, aerobic exercise capacity and body mass index in patients with type 2 diabetes. METHODS: A total of 177 (men: 85, women: 92) diabetic subjects with HbA1c < or = 10% were enrolled. Muscle strength and 1RM were assessed bychest press (upper body) and leg press (lower body). We assessed aerobic capacity by VO2max and muscle mass by bioimpedance analysis. RESULTS: There was no correlation between 1RM and VO2max in type 2 diabetic patients (upper: P = 0.122, lower: P = 0.138 for men, and upper: P = 0.952, lower: P = 0.570 for women). However, 1RM was significantly correlated with muscle mass both in men and women (upper: r = 0.493, P < 0.001, r = 0.315, P = 0.002 lower: r = 0.437 P < 0.001, r = 0.307, P =0.003, respectively). There was also a significant correlation between 1RM and BMI. In obese male subjects with BMI > or = 25 kg/m2, we observed a significant correlation between muscle mass and BMI (r = 0.374, P = 0.032), but this correlation was not observed in women. CONCLUSION: Clinicians treating Korean type 2 diabetic subjects should recommend resistance exercise to their patients. In particular, obese women with diabetes may receive greater benefits by increasing muscle mass through resistance exercises.

Keyword

Aerobic exercise; Diabetes mellitus; Muscle strength; Resistance training; Type 2 diabetes

MeSH Terms

Body Mass Index
Diabetes Mellitus
Exercise
Female
Humans
Insulin Resistance
Intra-Abdominal Fat
Leg
Male
Muscle Strength
Muscles
Resistance Training

Figure

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  Fig. 1 Correlations between 1RM and muscle mass. A. Men. B. Women. 1RM, one repetition maximum.

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  Fig. 2 Correlations between muscle mass and BMI. A. Men. B. Women. BMI, body mass index.

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