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Results 251 - 300 of 1438
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Hatamleh Muhanad M - - 2010
The purpose of this study was to test the effect of different periods of accelerated artificial daylight aging on bond strength of glass fiber bundles embedded into maxillofacial silicone elastomer and on bending strength of the glass fiber bundles. Forty specimens were fabricated by embedding resin-impregnated fiber bundles (1.5-mm diameter, ...
Choquette S - - 2010
This cross-sectional study proposes two relative strength indexes in order to evaluate the risks of lower mobility in healthy older adults: 1) handgrip strength on body mass index and 2) quadriceps strength on body weight. Nine hundred and four men and women aged between 67-84 years old were tested for ...
Puh Urska - - 2010
The purpose of the study was to quantify age-related changes in hand grip strength and three types of pinch grip strength (key pinch, tip pinch, and palmar pinch) among male and female participants. The study included 199 healthy participants (100 females, 99 males) aged 20-79 years, who were divided into ...
Miltner O - - 2010
AIM: The aim of this study was to analyse the efficiency of muscular activity in the trunk stabilisation of professional volleyball players compared to a group of amateur hobby players. The results were compared amongst the groups as well as with a reference group consisting of asymptomatic individuals. The question ...
Degache F - - 2010
OBJECTIVE: To investigate the relationships between isokinetic knee flexor and extensor muscle strength and physiological and chronological age in young soccer players. MATERIAL AND METHODS: Seventy-nine young, healthy, male soccer players (mean+/-standard deviation age: 12.78+/-2.88, range: 11 to 15) underwent a clinical examination (age, weight, height, body mass index and ...
Dalton B H - - 2010
Healthy adult ageing of the human neuromuscular system is comprised of changes that include atrophy, weakness and slowed movements with reduced spinal motor neurone output expressed by lower motor unit discharge rates (MUDRs). The latter observation has been obtained mostly from hand and lower limb muscles. The purpose was to ...
Cecílio F A - - 2010
The purpose of this study was to evaluate the influence of age on the electromyographic activity of masticatory muscles. All volunteers were Brazilian, fully dentate (except for Group I - mixed dentition), Caucasian, aged 7-80, and divided into five groups: I (7-12 years), II (13-20 years), III (21-40 years), IV ...
Pincivero D M - - 2010
The purpose of this study was to examine contraction intensity and arm abduction angle effects on perceived exertion between healthy young (n=14) and middle-aged (n=13) adults. Subjects participated in three separate experimental sessions during which, maximal (MVC) and sub-maximal (10-90% MVC, 10% increments, random order) arm abduction contractions were performed ...
Landi Francesco - - 2010
Sarcopenia has been indicated as a reliable marker of frailty and poor prognosis among the oldest individuals. We evaluated the relationship between midarm muscle circumference (MAMC) and physical performance, muscle strength, functional status and survival in persons aged 80 years or older. Data are from the baseline evaluation of the ...
Ling Carolina H Y - - 2010
BACKGROUND: Poor muscular strength has been shown to be associated with increased morbidity and mortality in diverse samples of middle-aged and elderly people. However, the oldest old population (i.e., over 85 years) is underrepresented in such studies. Our objective was to assess the association between muscular strength and mortality in ...
Kannas Theodoros - - 2010
The aim of this study was to examine the differences in muscle architecture during isometric tests between children and adults. Eight boys (age= 11.2 +/- 0.26 years) and eight men (age= 22.3 +/- 2.01 years) performed plantar flexion isometric efforts at angles of -15 degrees, 0 degrees, 15 degrees at ...
Sakari Ritva - - 2010
BACKGROUND AND AIMS: Prospective studies on the simultaneous effects of multiple determinants on objectively assessed mobility are few. The aim of this study was to analyse mobility performance, its stability and sensory, psychomotor and musculoskeletal determinants in an older population from age 75 to age 80. METHODS: Sixty-three men and ...
Peiffer Jeremiah J - - 2010
BACKGROUND: Resistance training programs for older adults (>65 years) are an effective method to counteract the loss of muscle mass, strength, and function associated with aging. Nevertheless, limited normative strength and functional data exist for the comparison and stratification of older adults. Therefore, the purpose of this study was to ...
Graciani Zodja - - 2010
Spastic paraplegia, optic atrophy, and neuropathy (SPOAN) is an autosomal recessive complicated form of hereditary spastic paraplegia, which is clinically defined by congenital optic atrophy, infancy-onset progressive spastic paraplegia and peripheral neuropathy. In this study, which included 61 individuals (age 5-72 years, 42 females) affected by SPOAN, a comprehensive motor ...
Koster Annemarie - - 2010
To examine the association between physical fitness, assessed according to ability and time to complete a 400-m walk, on changes in body composition and muscle strength over a 7-year period. Prospective observational cohort study. Memphis, Tennessee, and Pittsburgh, Pennsylvania. Two thousand nine hundred forty-nine black and white men and women ...
Lin Kae-Long - - 2010
This study investigated the pozzolanic reactions and engineering properties of waste brick-blended cements in relation to various replacement ratios (0-50%). The waste brick consisted of SiO(2) (63.21%), Al(2)O(3) (16.41%), Fe(2)O(3) (6.05%), Na(2)O (1.19%), K(2)O (2.83%) and MgO (1.11%), and had a pozzolanic activity index of 107%. The toxic characteristic leaching ...
Wiacek Magdalena - - 2010
The objective of these studies was to determine the gender-dependent changes of coordination and fitness parameters in function of age by means of observational, cross-sectional study. We studied 180 male and 180 female participants by means of flamingo, kinesthetic differentiation, spatial orientation, reaction to signals, arm bend and chair stand ...
Guo Jie - - 2010
Nonmetals reclaimed from waste printed circuit boards (PCBs) are used to replace wood flour in the production of wood plastic composite (WPC). To evaluate property durability against weather exposure, the effects of accelerated aging process on the properties of WPC are investigated. The results show that filling of nonmetals in ...
Cowgill Libby W - - 2010
While a wide variety of studies have focused on population variation in adult cross-sectional properties, relatively little is known about population variation in postcranial robusticity in immature individuals. Furthermore, the age at which the population differences readily detected in adults manifest during growth is also unknown. This research addresses these ...
Yoto Tsuyoshi Yi - - 2010
To elucidate how aging affects the muscular load required for pulling up pants-style disposable diapers, and why some elderly people cannot pull up the rear of their disposable diapers well, we evaluated the electromyogram (EMG) of 8 young subjects (21.5+/-1.5 years) and 7 elderly subjects (71.6+/-6.1 years). EMG was measured ...
Angst Felix - - 2010
Hand strength is an important independent surrogate parameter to assess outcome and risk of morbidity and mortality. This study aimed to determine the predictive power of cofactors and to predict population-based normative grip and pinch strength. A representative population survey was used as the basis for prediction analyses (n = ...
Grunte Iveta I Department of Human Studies, University of Alabama at Birmingham, Birmingham, AL 35294-1212, - - 2010
Lower extremity torque steadiness has been shown to be an independent predictor of functional performance in older women. Hip muscle function is crucial for many types of activities of daily living, yet existing studies investigating torque steadiness for lower extremities are limited to assessing steadiness at the knee and ankle. ...
Araujo Andre B AB New England Research Institutes, Inc,, Watertown, MA, USA. - - 2010
Age-related declines in lean body mass appear to be more rapid in men than in women but our understanding of muscle mass and function among different subgroups of men and their changes with age is quite limited. The objective of this analysis is to examine racial/ethnic differences and racial/ethnic group-specific ...
Chen X - - 2009
Dissolution of dense nonaqueous phase liquid (DNAPL) source zones can be accurately predicted based on appropriate characterization of the source zone architecture, which controls the rate of mass discharge or source strength function. However, the architecture changes temporally as the source zone mass is depleted by dissolution. To generalize comparisons ...
Saccol Michele Forgiarini - - 2010
To evaluate shoulder rotation strength and compare the functional ratio between shoulders of elite junior tennis players. This cross-sectional study evaluated muscular rotation performance of 40 junior tennis players (26 male and 14 female) with an isokinetic dynamometer. Strength variables of external (ER) and internal rotators (IR) in concentric and ...
Jackson Allen W - - 2010
The purpose of the study was to determine the relation between quintiles of muscular strength after adjustment for age and body weight, and excessive body fat (EBF) and excessive abdominal fat (EAF) when controlling for cardiorespiratory fitness (CRF) and other potential confounders. A two-phased cross-sectional and longitudinal study was conducted ...
Sedano S - - 2009
The main aim of the current study was to compare the anthropometrical and fitness profile of female soccer players by level and by playing positions. The second purpose was to explore correlations between kicking speed on the one hand and anthropometric features and explosive strength on the other. Female soccer ...
Bank David E - - 2009
The ideal dermal filler for treatment of the aging had needs to have inherent bulk and longevity of effect. The filler calcium hydroxylapatite (CaHA) provides a texture that lends itself to injection and then to subsequent massage, without losing control of where the product is placed. In the recent past, ...
Cortis Cristina - - 2009
This study aimed at verifying whether chronic participation in soccer training has a beneficial effect (p < 0.05) on the improvement and the maintenance of interlimb coordination performance across the lifespan and whether coordination is moderated by strength and power performances. Forty young (12 +/- 1 yr), 42 adult (26 ...
McCrory Jean L - - 2009
Exercise is commonly recommended to counteract aging-related muscle weakness. While numerous exercise intervention studies on the elderly have been performed, few have included elite senior athletes, such as those who participate in the National Senior Games. The extent to which participation in highly competitive exercise affects muscle strength is unknown, ...
Granacher Urs - - 2010
There is growing evidence that biological aging results in impaired force production of the lower extremities and deficits in reflex activity. This study therefore investigated maximal and explosive force production capacity, functional reflex activity (FRA) during gait perturbations, and the relationship between variables of force production capacity and FRA in ...
Carabello Robert J - - 2010
This study assessed the reliability of evaluating asymmetrical strength and power deficits in the lower limbs of healthy middle-aged, healthy older and mobility-limited elders. We also explored the relationship between limb asymmetry and physical functioning. We evaluated baseline knee extension strength and power asymmetry data from a cohort of older ...
Han Jing - - 2010
Porous scaffolds composed of alginate (AG) and chitosan (CS) were fabricated by combining the formation of polyelectrolyte complex (PEC) with freeze-drying. The AG scaffold was used as a framework with uniformly distributed and interconnected pore structure. The chitosan or chitosan/hydroxyapatite (CS/HA) composite solution was introduced into the pores of AG ...
Mirzaei Bahman - - 2009
The purpose of the present investigation was to describe the physiological profile of elite Iranian junior freestyle wrestlers. Seventy elite wrestlers (age 19.8 +/- 0.9 years) who were invited to the national training camps, based on their top 10 national ranking, participated in this study. The physiological profile included body ...
Boyce Robert W - - 2009
Strength is a critical factor in the health and job performance of police officers. Using a retrospective longitudinal design, the purpose of this study was to identify differences in strength scores from initial recruitment to in-service tests and to compare gender differences. Strength changes were also compared in low- to ...
Kong Pui W - - 2010
To compare the isometric and isokinetic hamstrings to quadriceps (H:Q) ratio 1) between the dominant (D) and non-dominant (ND) legs, and 2) between healthy males and females. Cross-sectional. University research laboratory. Quadriceps and hamstrings strength were assessed by maximum isometric contractions at six angles (40 degrees, 50 degrees, 60 degrees, ...
Kitisomprayoonkul Wasuwat - - 2010
Elderly often have Heberden nodes (HN) and Bouchard nodes (BN) that may affect finger dexterity. The aim of this cross-sectional study was to assess an effect of HN and BN on finger dexterity of the elderly. The nine-hole peg test was used for dexterity measurement in 200 elderly with HN ...
Evans John A - - 2009
Maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) are simple, convenient, and noninvasive indices of respiratory muscle strength at the mouth, but standards are not clearly established. We review recent literature, update the 2002 American Thoracic Society/European Respiratory Society statement, and propose as the best choice using a flanged ...
Lowndes Joshua J Center for Lifestyle Medicine and Department of Health Professions, University of Central Florida, Orlando, Florida 32826, - - 2009
The purpose of this study was to assess the association of age with muscle mass and strength in a group of young adults before and after 12 weeks of progressive resistance training. Eight hundred twenty-six young males and females (age 24.34 +/- 5.69 yr, range 18-39 yr) completed a strictly ...
Suri Pradeep P Department of PM&R, Harvard Medical School, Boston, MA, USA. - - 2009
To determine whether trunk muscle attributes are associated with balance and mobility performance among mobility-limited older adults. Cross-sectional analysis of data from a randomized clinical trial. Outpatient rehabilitation research center. Community-dwelling older adults (N = 70; mean age 75.9 years) with mobility limitations as defined by the Short Physical Performance ...
Waddington M S - - 2009
Female anaesthetists in early training commonly question whether their strength is adequate for tracheal intubation. This study investigated the influence of gender and experience on intubation ability and laryngoscopic technique. A manikin model and purpose-designed force-transducing laryngoscope was used to test three cohorts at different levels of experience (novice, intermediate ...
Aoki Hiroki - - 2009
PURPOSE: This study aimed to compare the laterality, and its gender difference, of hand grip and elbow flexion power according to load in right hand-dominant individuals. METHODS: The subjects were 15 healthy young males (age 22.1 +/- 0.7 y, height 171.3 +/- 3.4 cm, mass 64.5 +/- 4.1 kg) and ...
Hardt Julie - - 2009
This study explored the relationship between lower limb asymmetry and stance preference in the swimming track start. Track start performances and asymmetry measures were collected from 11 male and 11 female competitive age group swimmers. The track start performance was defined as the time taken to reach the 5-m mark. ...
Incel Nurgul Arinci - - 2009
On the basis of the importance of hand manipulation in activities of daily living (ADL), deterioration of hand function because of various factors reduces quality and independence of life of the geriatric population. The aim of this study was to identify age-induced changes in manual function and to quantify the ...
Yamauchi Junichiro - - 2010
BACKGROUND: Because many of our movements of daily living are multi-joint movements and lower limb performance decreases with aging, it is important to understand the influence of aging on muscle functions of lower limb multi-joint movements. OBJECTIVE: To investigate aging-related differences in the maximum force, unloaded velocity and power of ...
Tommasi Davide G - - 2009
STUDY DESIGN: A study on active cervical range of motion (RoM) in healthy females of different ages. OBJECTIVE: Perform a three-dimensional quantitative analysis of active head-cervical RoM in healthy females to assess the relationship with age. SUMMARY OF BACKGROUND DATA: Age-related variations in active cervical RoM are still partially unknown: ...
Yamamoto Kenta - - 2009
Flexibility is one of the components of physical fitness as well as cardiorespiratory fitness and muscular strength and endurance. Flexibility has long been considered a major component in the preventive treatment of musculotendinous strains. The present study investigated a new aspect of flexibility. Using a cross-sectional study design, we tested ...
Webber Sandra C - - 2009
With aging, motoneurons and muscle tissue undergo significant changes, which influence function in terms of strength, mobility, and overall independence. Mathematical modeling provides a practical method of studying the relationships among recruitment, rate-coding, and force output in motor units, and may be used to predict functional neuromuscular changes related to ...
De Ste Croix Mark B A - - 2009
The purpose of this study was to examine the age- and sex-associated differences of repeated isokinetic knee extension and flexion. Fifty one participants, 30 young children (16 boys and 14 girls; aged 11 and 12 years) and 21 adults (9 males and 12 females; aged 18-35 years), agreed to participate ...
Gordon Bradley S - - 2009
The purpose of this study was to investigate the relationship of flexibility, power, and strength to club head speed (CHS) in male golfers. Fifteen golfers (mean age +/- SD: 34.3 +/- 13.6 years) with a handicap of </=8 volunteered for the study. Following a standardized warm-up, subjects proceeded to hit ...
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