Yan F.,University of International Business and Economics |
Zhang Y.,Harbin Institute of Physical Education |
Wang B.,University of International Business and Economics
Bangladesh Journal of Pharmacology | Year: 2012
This study was designed to determine the effects of polysaccharides from Cordyceps sinensis mycelium (CSP) on physical fatigue in mice. The mice were randomly divided into four groups (n = 16 in each group), i.e. control group, low-dose CSP treated group, intermediate-dose CSP treated group and high-dose CSP treated group. The mice in the treated groups received CSP (100, 200 and 400 mg/kg, ig), and the mice in the control group received drinking water ig. After 28 days, a forced swimming test was performed and some biochemical parameters related to fatigue were examined. The present data suggested that CSP could extend the exhaustive swimming time of mice, as well as increase the hepatic glycogen and muscle glycogen levels, and decrease the blood lactic acid and BUN levels. These results indicated that CSP had anti-fatigue effects.
Zhou W.T.,Harbin Institute of Physical Education
Yi chuan = Hereditas / Zhongguo yi chuan xue hui bian ji | Year: 2013
Acute high altitude disease(AHAD), which can be divided into acute mountain disease (AMS), high altitude pulmonary edema (HAPE) and high altitude cerebral edema (HACE), is one of the special illnesses occurred at high altitude, commonly encountered by travelers to high altitudes (>2 500 m), which affects people's work capacity and health and could be even a life-threatening disease. Despite extensive investigations over the last century, the pathophysiology of AHAD remains elusive. Nevertheless, numerous researches have confirmed the existence of AHAD susceptibility differences. The aim of this paper was to review the epidemiological evidence for a genetic component to the various forms of AHAD so far, as well as to supply helpful reference to its epidemiological studies.
Ming S.,Harbin Institute of Physical Education
RISTI - Revista Iberica de Sistemas e Tecnologias de Informacao | Year: 2016
Biological chip technology has penetrated into all aspects of life, and its application in the field of sports is relatively small. Through the theory analysis of the characteristics of biological chip, the basic principle of technology, and combined with the field of sports, which can predict the biological chip for gene selection of athletes and athletes with different racial comparison of gene sequences, and explore the rules and mechanism of exercise-induced fatigue, and accelerate eliminate fatigue, and improve exercise capacity to provide scientific research and application means. At the same time, the physiological mechanism of human's movement ability could be explored at the molecular level, and enriches the contents of sports physiology and sports genetics. Bio chip in the field of sports will have a broad prospect and greatly promote the development of sports biology and the pace of development.
Yu D.-H.,Shanghai University of Sport |
Yang H.-X.,Harbin Institute of Physical Education
Journal of Sport and Health Science | Year: 2012
Purpose: The purpose of the present study was to examine the effects of a 24-week Tai Chi exercise intervention on balance and other physical changes such as flexibility and reaction time (RT) among healthy older males. Methods: Thirty-eight male subjects aged 55-65 years without prior Tai Chi experience were recruited from a local community in Shanghai, China. A 60-min Tai Chi exercise session was performed three times a week for 24 weeks. Changes in RT, sit-and-reach flexibility and balance (static balance with eyes open and closed respectively) were measured before and after the Tai Chi intervention. Results: After the 24-week Tai Chi intervention, the choice RT (p< 0.05) decreased, and sit-and-reach flexibility improved (p< 0.01) over the pre-test (7.8 ± 6.2 vs. 7.1 ± 3.0. cm). Sway length, area, X-axis deviation amplitude and Y-axis deviation amplitude performance decreased significantly after the intervention with a double-foot stance with eyes open (p< 0.05). Sway length, area and average sway speed showed a statistically significant decrease after the intervention with the double-foot stance with eyes closed. In the single-foot stance with eyes open condition, sway length and average sway speed showed a statistically significant decrease (p< 0.05). Conclusion: The 24-week Tai Chi exercise intervention had a positive influence on balance control in older males. © 2012.
Shi M.,Harbin Institute of Physical Education
Open Cybernetics and Systemics Journal | Year: 2015
This paper discusses the current situation of sports communication in the big data era and the relationship between the big data and the media. Then describe characteristics of the big data era sports communication through three aspects: the channel platform, audience boundaries and present content, and predict the future development of the big data era sports communication through four aspects: enhance information analysis, upgrade their own media literacy, build cross media integrated communication mode and the government provides the system guarantee. Conclusion: large data has been used in every industry of sports, for sports communication has great role in promoting, it promotes the development of undertakings of physical culture and sports. However, at present, China is still in the initial stage, it needs seize the opportunity to pull the sports communication into an all-round way to the information in the future development. © 2015 Ming Shi; Licensee Bentham Open.
Zhang X.,Harbin Institute of Physical Education
Applied Mechanics and Materials | Year: 2013
At present, more and more tennis players use forehand drive play to carry out important tennis match in the tennis sports. In order to better tennis forehand pumping ball to understand technical motion analysis, the use of tennis forehand drive action to carry on mechanical analysis. Through the theoretical mechanics analysis of tennis forehand drive, to select our country excellent tennis players carry out tennis forehand drive experimental mechanical analysis, at the same time, tennis players use the forehand drive movement structure and the comprehensive effect of smoke ball for the different rotation tennis of forehand out, which can obtain the mechanics characteristic of tennis athletes forehand drive technology movement that conduce to tennis players' attack and defence skill training. © (2013) Trans Tech Publications, Switzerland.
Yan F.,University of International Business and Economics |
Wang B.,University of International Business and Economics |
Zhang Y.,Harbin Institute of Physical Education
Pharmaceutical Biology | Year: 2014
Context. Cordyceps sinensis (Berk.) Sacc. (Clavicipitaceae) is a famous medicinal fungus (mushroom) in Chinese herbal medicine. Polysaccharides from Cordyceps sinensis (CSP) have been identified as active ingredients responsible for its biological activities. Although many pharmacological actions of CSP have received a great deal of attention, research in this area continues. Objective: The current study was designed to investigate the effects of CSP on exhaustive exercise-induced oxidative stress. Materials and methods: The mice were divided into four groups: control (C), low-dose CSP treated (LC), intermediate-dose CSP treated (IC) and high-dose CSP treated (HC). The treated groups received CSP (100, 200 and 400mg/kg, ig), while the control group received drinking water for 28days, followed by being forced to undergo exhaustive swimming exercise, and some biochemical parameters including superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT), malondialdehyde (MDA) and 8-hydroxy-2′- deoxyguanosine (8-OHdG) were measured using detection kits according to the manufacturers' instructions. Results: Compared with the C group, exhaustive swimming time was significantly prolonged in the LC, IC and HC groups (p<0.05); SOD activities in serum, liver and muscle were significantly higher in the IC and HC groups (p<0.05); GPx activities in serum, liver and muscle were significantly higher in the LC, IC and HC groups (p<0.05); CAT activities in serum, liver and muscle were significantly higher in the HC groups (p<0.05); MDA and 8-OHdG levels in serum, liver and muscle were significantly lower in the LC, IC and HC groups (p<0.05). Discussion and conclusion: The results obtained herein indicate that CSP could ameliorate exhaustive exercise-induced oxidative stress. © 2014 Informa Healthcare USA, Inc. All rights reserved.
Zhou W.,Harbin Institute of Physical Education
Yi chuan = Hereditas / Zhongguo yi chuan xue hui bian ji | Year: 2014
Differences among individuals in exercise performance are determined by a range of environmental and genetic factors. Since 2008, numerous studies in the genetics of exercise performance have been published and a set of significant results have been obtained. In this review, we analyze the research results in physical activity, muscular strength and endurance from reputable papers selected based on these following aspects: sample size, quality of phenotype measurements, quality of the exercise program or physical activity exposure, study design, adjustment for experimental testing and quality of genotyping. We also review the progress of these three research fields and suggest new directions to future research.
Zhou L.-M.,Harbin Institute of Physical Education
Asian Pacific Journal of Cancer Prevention | Year: 2014
Our aim was to access the association between recreational physical activity (RPA) and risk of ovarian cancer (OC). The studies were retrieved from the PubMed and Embase databases up to February 20th, 2014. Risk ratios (OR) and 95% confidence intervals (CI) were used to estimate effect sizes. Random-effects or fixed-effects models were used to pool the data. The trim and fill method was applied for sensitivity analysis. Begg's rank correlation test and Egger's regression asymmetry test were employed to assess the publication bias. A total of 6 studies (435398 participants including 2983 OC patients) were included in this meta-analysis. The overall estimate indicated that there was weakly inverse association between RPA and OC risk (RR=0.90, 95%CI: 0.72-1.12, p=0.335). Meanwhile, for prospective cohort studies, a result consistent with the overall estimate was obtained (RR=1.12, 95% CI: 0.88-1.42, p=0.356). However, for case control studies, the pooled estimate of RR was 0.76 (95%CI: 0.64-0.90, p=0.002), indicating a clear significant association between RPA and OC risk. In addition, the sensitivity analysis indicated a significant link between RPA and risk of OC after removing Lahmann's study (RR=0.80, 95% CI: 0.68-0.93, p=0.004). No significant publication bias was found (Begg's test: p=1.00; Egger's test: p=0.817). In conclusion, our meta-analysis indicated a weakly inverse relationship between RPA and the occurrence of OC.
Zhou L.,Harbin Institute of Physical Education
International Journal of Multimedia and Ubiquitous Engineering | Year: 2014
A novel multimodal approach of highlight ranking for sports video summaries in affective context was proposed based on player behavior information and audio keywords of sports game. The mid-level representation trajectory-action-audio is constructed for the video content by fusing the information of player trajectory, action and audio keywords. Based on trajectory-action-audio, the computational affective features are extracted to describe the objective process of highlight ranking of sports video summaries from user subjective perception. A kernel based nonlinear probabilistic ranking model construction method is proposed, which is robust for the noisy data and provided with good expansibility. In addition, a new subjective evaluation criterion is proposed to guide model construction and feature extraction with the assistance of forward search algorithm. © 2014 SERSC