Effects of Catechin-Ingestion and Heat Stress on the Maximum Isometric Force in Knee Extension, the Volume of Quadriceps Muscle, and Serum Thiobarbituric Acid Reactive Substances Level in Healthy Elderly Women
|Katsumasa Goto1*, Hideshi Oda2, Noriyasu Ota3, Atsuya Watanabe4, Hidefumi Kitazawa3, Michihito Igaki2, Atsushi Suzuki2,
Akira Shimotoyodome3, Tadashi Hase3, Takao Sugiura5, Yoshinobu Ohira6 and Toshitada Yoshioka7
|1 Department of Physiology, Graduate School of Health Sciences, Toyohashi SOZO University, Toyohashi, Japan|
|2 Personal Health Care Products Research Laboratories, KAO Corporation, Sumida, Tokyo, Japan|
|3 Biological Science Research Laboratories, KAO Corporation, Haga, Tochigi, Japan|
|4 Department of Orthopeadic Surgery, Teikyo University Chiba Medical Center, Ichihara, Chiba, Japan|
|5 Department of Exercise and Health Sciences, Yamaguchi University, Yamaguchi City, Yamaguch, Japan|
|6 Graduate School of Medicine, Osaka University, Toyonaka City, Osaka 560-0043, Japan|
|7 Hirosaki Gakuin University, Hirosaki, Japan|
|Corresponding Author :||Katsumasa Goto
Department of Physiology
Graduate School of Health Sciences
Toyohashi SOZO University, 20-1 Matsushita
Ushikawa, Toyohashi City, Aichi 440-8511, Japan
E-mail: [email protected]
|Received December 23, 2013; Accepted February 13, 2014; Published February 17, 2014|
|Citation: Goto K, Oda H, Ota N, Watanabe A, Kitazawa H, et al. (2014) Effects of Catechin-Ingestion and Heat Stress on the Maximum Isometric Force in Knee Extension, the Volume of Quadriceps Muscle, and Serum Thiobarbituric Acid Reactive Substances Level in Healthy Elderly Women. J Gerontol Geriat Res 3:148. doi:10.4172/2167-7182.1000148|
|Copyright: © 2014 Goto K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.|
Background: Sarcopenia, is a major concern for our aged society because sarcopenia is a fundamental cause of frailty and functional disability.
Aim: The effects of catechin-ingestionp and/or heat treatment on the volume in quadriceps muscles, isometric force of knee extension, and serum thiobarbituric acid reactive substances (TBARS) were investigated in healthy elderly women.
Methods: Subjects (71.0 ± 0.7 years old, n=27) were divided into 3 groups; 1) catechin-ingested, 2) heatstressed, and 3) catechin-ingestion with heat stressed (catechin+heat) groups. Subjects in both catechin-ingested and catechin+heat groups daily ingested 350 ml of green tea containing 540 mg of catechin in one hour for 10 weeks. Heat stress was applied on the quadriceps muscles for 8 hours a day and 4 days a week by using two heat- and steam generating sheets.
Results: In catechin+heat group, muscle volume (Pre: 670 ± 38.7 cm2, Post: 676 ± 37.2 cm2) and maximal isometric force (Pre: 25.8 ± 2.5 kg, Post: 27.0 ± 2.5 kg) were significantly increased by the 10-week of treatment (p<0.05), but not in catechin-ingested and heat-stressed groups. The time of Timed-Get-Up-and-Go test (TUG), which is widely used to measure sit-to-stand performance, in both catechin-ingested (Pre: 6.70 ± 0.33 s and Post: 6.19 ± 0.28 s) and catechin+heat (Pre: 6.49 ± 0.30 s and Post: 5.95 ± 0.24 s) groups in catechin-ingested group; was significantly shortened by the treatment (p<0.05). Following 10-week of the treatment, serum TBARS levels in both catechin ingested (Pre: 29.06 ± 1.32 nmol/ml, Post: 24.47 ± 2.30 nmol/ml) and catechin+heat (Pre: 29.84 ± 1.57 nmol/ml, Post: 23.92 ± 0.98 nmol/ml) groups were significantly decreased (p<0.05), but not in heat group.
Conclusions: Evidences suggest that catechin-ingestion with heat stress might improve impaired muscle function of elderly women.