Muskoxen (<i>Ovibos moschatus</i>) are relatively large herbivores living in an arctic environment where forage is sparse and its availability during long winters is often much reduced by snow and ice. Muskoxen cope by obtaining energy and nutrients from the low-quality sedges and grasses they eat, and from body reserves accumulated in summer and autumn. The objectives of this study were to evaluate the physiological and energetic adaptation of muskoxen to digestion of graminoid forage, and to measure the extent and reproductive significance of seasonal changes in body composition of female muskoxen. The first objective was addressed using two studies with captive muskoxen in Saskatoon, and the second during a field study on Victoria Island, Northwest Territories. In the first study, changes in body weight, intake, retention time and digestibility of a supplemented brome-alfalfa hay were measured in mature muskoxen during two seasonal cycles. Mean daily dry matter intake of breeding females was highest in July and August (62 ± 3.6 g/kg^0.75) then declined slowly to its lowest point in March and April (41 ± 0.7 g/kg^0.75). Mean retention time of hay, calculated from a chromium marker, declined (P<0.01) from 114 ± 4 h in March to 95 ± 4 h in July. Apparent organic matter digestibility decreased (P<0.01) from 74.7 ± 0.8% in winter to 61.7 ± 1.3% in summer. Compared with other ruminants, muskoxen are grazers exceptionally well-suited to slow, thorough digestion of graminoid forage. In the second study, the voluntary intake and apparent digestibility of a low-protein grass hay, similar in composition to diets of wild muskoxen in winter, were measured in five mature muskoxen and three mature Hereford cows during late winter 1993. Both species maintained body weight on the experimental diet but daily dry matter intake of the muskoxen was only 1/3 that of the cattle (32 ± 2 vs. 96 ± 3 g/kg^0.75; P<0.001). Apparent digestibility of organic matter, measured using chromic oxide, was higher in the muskoxen than in the cattle (58 ± 2 [SE] vs. 50 ± 3%; P=0.03). Muskoxen are particularly well adapted to digesting low quality graminoid forage at exceptionally low rates of intake. In the third study, the anatomical and chemical body composition of 22 muskoxen that varied widely in size, age and condition were analysed, and measures of body weight and condition were evaluated as predictors of body composition. The leanest muskoxen were four 5 to 15-day-old calves with 3.5 ± 0.5% (mean ± SE) fat in the IFBW, and the fattest were three females with 24.8 ± 1.4% fat. Muscle weight was best predicted from weights of individual muscles, protein weight from IFBW, bone weight from the weights of individual limb bones, and ash weight from IFBW. Combining kidney fat weight and a measure of body weight with up to three other measurements allowed dissectible and total fat weights to be estimated accurately. The extent of fattening in muskoxen exceeded that found in other wild ruminants with the exception of Svalbard reindeer (<i>Rangifer tarandus platyrhynchus</i>). In the fourth study, the body weight, body composition and reproductive status of 202 muskox cows from Victoria Island were analysed during 16 seasonal collections from 1989 to 1993. Adult muskox cows were lightest and leanest in May, when the ingesta-free body weight (IFBW) of newly-lactating adult cows was 116 ± 2 kg (adjusted mean ± SE) and a similar 112 ± 3 kg in nonlactating cows. Thereafter, the IFBW of lactating cows was virtually unchanged until July, increased rapidly during August, peaked in September at 166 ± 4 kg, then decreased to 148 ± 2 kg in November. In contrast, the IFBW of nonlactating cows increased throughout summer, reached a higher peak in September (176 ± 7 kg; P < 0.01) and changed little by November (164 + 2.1 kg). Pregnancy rates in this population increased from 0 in females 1.5 years old in the autumn to 25% in 2.5 year-olds and 62.5% in cows at least 3.5 years old. Lactation did not appear to peak until at least two months after calving, and was sometimes extended to more than a year. Lactation in November did not preclude pregnancy, but pregnant females at this time were fatter and heavier than nonpregnant cows. These results indicate substantial flexibility in reproductive patterns of muskoxen and an unique ability to maintain condition through long arctic winters. Based on these studies, the persistence of muskoxen through arctic winters can be ascribed in large part to exceptionally low maintenance requirements, along with an ability to thoroughly digest low-quality graminoid forage. Female muskoxen also deposit large quantities of fat in late summer and are able to conserve a large portion of them through early and mid- winter, and use them to support late-winter lactation. Muskox reproductive rates are strongly sensitive to nutritional influences. This suite of K-selected characters in muskoxen is consistent with a slow metabolism and a low rate of population growth.

Two similarly managed trials were conducted to investigate serial ultrasound measures of body composition (longissimus muscle area (ULMA), 12th - rib fat thickness (UFAT), and percentage of intramuscular fat (UIMF)) early in the lives of feeder calves as they compared to carcass traits. Group 1 cattle were Charolais-sired by Brahman-British crossbred dams whereas Group 2 cattle were purebred Beefmaster. Both groups were fed at the same commercial feedlot (Graham Land and Cattle Co.) in Gonzales, Texas. In both data sets classifications were developed for ribeye area of Lower (less than 70.95 cm2, Middle (between 70.95 cm2 and 90.3 cm2) and Upper (over 90.3 cm2) based on a range that fit within the ribeye specifications of such branded beef programs as Certified Angus Beef and Nolan Ryan?s Tender Aged Beef. Differences among ribeye area and quality grade (Choice vs. Select) categories were evaluated for ultrasound and carcass traits. As reported previously, correlations between ultrasound measures and carcass traits became larger at times closer to harvest. In both sets of cattle, there were no differences in fat thickness or intramuscular fat at the ultrasound scan sessions or in these carcass traits due to ribeye area category. The same trend for quality grade classification was not seen across both groups of cattle however. In Group 1, there were no differences in early measures of body composition between carcass quality grade classes except for ultrasound fat thickness at weaning. However, in Group 2 cattle there were differences in ultrasound fat at times 1 and 2, IMF at time 1, and ribeye area at time 2 between cattle that graded choice verses those that graded select. Correlations between ultrasound measures of REA (r of .26 to .50) and ultrasound REA and carcass REA (r of .16 to .81) appeared to be lower in Group 1 vs. Group 2 (r of .55, and .64 to 81 respectively). Results from this project imply that changes in ribeye area will not automatically result in changes of marbling and vice versa. Furthermore, these results also show that ultrasound is useful to help predict beef carcass traits, but that early measures of body composition used alone do not explain a large portion of the variation in the carcass measures and specific methods should be developed by different biological cattle types.

The purpose of this study was to determine the role of body composition and fat distribution on C-reactive protein (CRP) and interleukin-6 (IL-6); determine the differences in CRP and IL-6 among HT users and non-users; determine the effect of 12-months of resistance training and resulting body composition changes on IL-6 and CRP; determine the relationship between BMD and IL-6, CRP and creatine kinase (CK). Sedentary women (N=208, age 44-66, 3-10 years postmenopausal) taking HT (N=106) or not taking HT (N=102) were randomly assigned to resistance training: HTexercise (N=55), HT-no exercise (N=45), no HT-exercise (N=53), and no HT-no exercise (N=49). The program included three weekly 60-75 minute sessions of 8 exercises performed in 2 sets of 6-8 repetitions at 70-80% of 1RM. Total fat mass (TFM), lean soft tissue mass (LSTM) and BMD were assessed by dual-energy X-ray absorptiometry (DXA). Abdominal fat mass (AFM) was assessed using DXA region of interest. For each subject, baseline and 1- year IL-6, CRP and CK were measured. High TFM, high IL-6 and HT use were independently associated with high CRP levels. A stronger relationship between IL-6 and AFM compared to TFM was found in HT users. High TFM and LSTM were significantly related to higher IL-6 levels. A stronger relationship between CRP and AFM compared to TFM was found in HT non-users. CRP was higher in HT users (5.47±5.40 mg/L) compared to non-users (2.70±3.05 mg/L) and was higher in oral (5.76±5.29 mg/L opposed; 6.14±5.97 mg/L unopposed) compared to transdermal HT users (2.65±4.44 mg/L). CRP increased slightly (p=0.077) in exercisers (0.54 ± 0.34 mg/L) not taking HT compared to controls (-0.39 ± 0.35 mg/L). Reductions in TFM were associated with reductions in IL-6 and CRP in HT users. CK was positively associated to all BMD sites at baseline. IL-6 change was positively associated with change in femur neck BMD. CRP change was inversely correlated with change in lumbar spine BMD. CK change was directly related to change in total body and femur trochanter BMD. In conclusion, reductions in TFM were accompanied by reductions in IL-6 and CRP; AFM was more strongly correlated with inflammation than TFM; 12-months of resistance training did not decrease IL-6 or CRP; IL-6 and CK were positively related to BMD, and CRP was inversely associated with BMD.

Shape- and weight-based self esteem was proposed to be a central cognitive component of the eating disorders. In this thesis, the psychometric properties of the Shape- and Weight-Based Selfesteem (SAWBS) Inventory, a newly-developed measure of the influence of shape and weight on feelings of self-worth, were determined. A preliminary examination of possible developmental precursors of shape- and weight-based self-esteem was also performed. SAWBS scores were stable over 1 week, and correlated with women's negative perceptions about their bodies in eating disorder and undergraduate control groups (EDG and UCG, respectively). In the UCG, SAWBS scores correlated with one of two measures of shape and weight cognitive schemata. The validity of shape- and weight-based self-esteem as a central feature of eating disorder symptomatology was supported in a number of ways. SAWBS scores correlated positively with eating disorder symptom scores in the UCG, and were significantly higher in women identified as "possible or probable" eating disorder cases than in women not suspected of having an eating disorder. SAWBS scores were also higher in the EDG than in the UCG or a psychiatric control group (PCG), even after controlling for age, socioeconomic status, Body Mass Index (BMT), selfesteem, and depression. Interestingly, a differing relationship between depression and SAWBS emerged as a function of group. Follow-up investigations revealed that SAWBS scores differed significantly between depressed, but not nondepressed women from the three groups. With regard to discriminant validity, SAWBS scores were uncorrelated with BMI and socioeconomic status in UCG and EDG women, and were uncorrelated with the tendency to respond in a socially sanctionned manner in UCG women. Although the tendency to respond in a socially sanctionned manner was related to SAWBS scores in EDG women, SAWBS scores remained higher in EDG than in UCG women after the effect of social desirability was controlled. The proposed developmental precursor variables of SAWBS included endorsement of stereotyped beliefs about thinness, perceived SAWBS in friends, siblings, and parents, and perceived importance placed by parents and romantic partner on the woman's own shape and weight. In both EDG and UCG women, endorsement of societal beliefs about shape and weight, and perceived importance placed on their own shape and weight by mother and father were significantly related to SAWBS scores. In sum, the SAWBS Inventory showed early promise as a reliable and valid measure of shape- and weight-based self-esteem, and may be a useful tool in the assessment of eating disorders. Theoretical and clinical implications with regard to the role of SAWBS in the development and treatment of eating disorders are discussed.

Background: The incidence of injuries in rugby union has increased on both professional and amateur levels since the introduction of professionalism in 1995. Although rugby union is a body contact sport with an expected high injury rate, limited research has been done regarding the postural and biomechanical characteristics of the players and the effect these variables have on the incidence and nature of rugby union injuries. Large body size is a significant predictor of success in rugby union and the body mass and mesomorphy of players has increased over the last years. It has, however, not been thoroughly investigated whether changes in body composition have any effect on the incidence of rugby union injuries. Intrinsic risk factors that have been identified to contribute to rugby union injuries are Hyper-mobility of joints, lack of dynamic mobility and core stability, previous injuries, aerobic and anaerobic fitness as well as the personalities and characteristics of players which affect their on-field awareness. The findings of studies investigating the relation between player characteristics and rugby union injuries are inconsistent because of the differences in player characteristics under investigation and playing conditions, different research methodologies used as well as differences in the way injury is defined. Therefore, the need exists to determine the differences in the biomechanical, postural and anthropometrical characteristics of injured and uninjured rugby union players by making use of a prospective design and a standardized injury definition. Objectives: The objectives of this study were firstly, to determine the incidence and nature of injuries among U/21 rugby union players at the Rugby Institute (RI) of the North-West University (NWU) (South Africa) and secondly, to determine which of the selected biomechanical, postural and anthropometrical characteristics contributed to musculoskeletal injuries obtained during the first five months of the 2005 season. Method: s A prospective once-off subject availability study was performed that included forty-nine U/21-rugby union players of the RI of the NWU. Biomechanical, postural and anthropometrical assessments were performed on all subjects before the start of the 2005- season. All the injuries sustained during the first five months of the 2005 season were recorded by means of a validated rugby union injury report questionnaire. A stepwise discriminant analysis identified the independent variables that discriminated mostly between the players with and without injuries within the different body regions. Back-classification by means of the "Jack-knife method" determined whether the independent characteristics that were selected to contribute to injuries was valid and the effect size, I ("better than chance"), was then determined, with I > 0.3 accepted as practically significant. Results: A total of 66 injuries with an injury rate of 8.611000 training hours and 61.811000 game hours were reported. Severe injuries accounted for 53% of all injuries to forward players with the ankle being the most injured anatomical region. In the backline severe injuries accounted for 11% with the shoulder being the most injured region. The tackle was the phase of play in which most injuries occurred. The statistical analysis identified uneven hips, pronated feet, tight hamstrings, anatomical leg length differences, gait pronation and a tall stature to be practically significant predictors for lower extremity injuries (I>0.3). No practical significance was obtained for the selected biomechanical, postural and anthropometrical characteristics related to shoulder girdle as well as back or spine injuries. Conclusions: The conclusions that can be drawn from this study are that the injury incidence of rugby union players of the U/21-squad of the RI of the NWU is high in comparison with those of other club level players and that postural and biomechanical imbalances of the lower extremities may increase the risk for injury in this area. / Thesis (M.A. (Human Movement Science))--North-West University, Potchefstroom Campus, 2007.

The overall aim of this thesis was to provide better understanding of the underlying factors related to health maintenance in very old people, with a focus on medical conditions, functional outcome and nutritional status. Data were gathered from the ELSA 85 project (Elderly in Linköping Screening Assessment). The ELSA 85 project was started in 2007 with a population-based survey of 85-year-old individuals (n = 650) residing in Linköping municipality, Sweden. During the study period from 2007 to 2010, we conducted surveys by postal questionnaire, home visits, geriatric clinic visits, and reviews of electronic medical records as well as the database of health service consumption. A series of cross-sectional analyses were performed on multimorbidity, health service consumption, activities of daily living (ADLs), physical functioning and nutritional status. Of 650 eligible individuals, 496 (78% of those alive) completed the questionnaire (Paper I). Despite the prevalence of multimorbidity (68%) and frequent use of assistive technology for mobility (40%), the majority managed self-care (85%), usual activities (74%) and had high self-rated health (&gt;60/100, visual analogue scale). Factors associated with in-patient care were an increased number of general practitioner visits, more use of assistive technology, community assistance, multimorbidity (≥2 chronic diseases) and/or heart failure and arrhythmia. Cluster analyses (n = 496, Paper II) revealed five clusters: vascular, cardiopulmonary, cardiac (only for men), somatic–mental (only for men), mental disease (only for women), and three other clusters related to ageing (one for men and two for women). Heart failure in men (odds ratio [OR], 2.4; 95% confidence interval [CI], 1–5.7) and women (OR, 3; 95% CI, 1.3–6.9) as a single morbidity explained more variance than morbidity clusters in models of emergency room visits. Men’s cardiac cluster (OR, 1.6; 95% CI, 1–2.7) and women’s cardiopulmonary cluster (OR, 1.7; 95% CI, 1.2–2.4) were significantly associated with hospitalization. The combination of the cardiopulmonary cluster with the men’s cardiac cluster (OR, 1.6; 95% CI, 1–2.4) and one of the women’s ageing clusters (OR, 0.5; 95% CI, 0.3–0.8) showed interaction effects on hospitalization. In Paper III, overweight (body mass index [BMI], 25–29.9 kg/m2) and obese (BMI, ≥30 kg/m2) individuals (n = 333) perceived more difficulty performing instrumental ADL (IADL) and had more comorbidities than their normal weight counterparts (BMI, 18.5–24.9 kg/m2). After controlling for socio-demographic factors, obese but not overweight individuals were more likely to perceive increased difficulty in performing outdoor activities (OR, 2.1; 95% CI, 1.1–4) and cleaning (OR, 2.2; 95% CI, 1.2–4.2) than their normal weight counterparts. Although obesity was also associated with multimorbidity (OR, 3; 95% CI, 1.2–8), the health service cost of each case of multimorbidity (n = 251) was highest in individuals of normal weight and nearly three times as much as in obese individuals (ratio, 2.9; 95% CI, 1.1–8.1). In Paper IV, 88-year-old obese women (n = 83) had greater absolute waist circumference, fat mass (FM) and fat-free mass (FFM), and lower handgrip strength (HS) corrected for FFM and HS-based ratios (HS/weight (Wt), HS/BMI, HS/FFM and HS/FM) than their normal weight and overweight counterparts. After adjusting for physical activity levels and the number of chronic diseases, the HS-based ratios explained more variance in physical functioning in Short Form-36 (R2, 0.52–0.54) than other single anthropometric or body composition parameters (R2, 0.45–0.51). Waist circumference, HS, and two HS-based ratios (HS/Wt and HS/FFM) were also associated with the number of IADL with no difficulty. In conclusion, the ELSA 85 population showed a fairly positive image of healthy perception, good functional ability as well as low use of health care among the majority of participants. Patterns of cardiac and pulmonary conditions were better associated than any single morbidity with hospitalization. Heart failure as a single morbidity was better associated than multimorbidity patterns with emergency room visits. For 85-year-olds, being obese, as opposed to overweight, was associated with self-reported activity limitations and comorbidities. Overweight elderly living in their own homes in this population had similar well-being to those of normal weight. In the cohort of 88-year-olds, obese women had high waist circumference, but their HS was relatively low in relation to their Wt and FFM. These parameters were better than BMI for predicting physical function and independent daily living. / Att åldras innebär inte bara en utveckling över tid utan också en förändring av människans fysiologi och funktion. Vi har många olika bilder av åldrandet. Ofta överväger de negativa bilderna som betonar sjuklighet och höga samhällskostnader för vård och omsorg. ELSA 85, en förkortning av the Elderly in Linköping Screening Assessment, påbörjades 2007 med avsikt att kartlägga 85-åringars hälsotillstånd och funktion. Syftet med denna avhandling var att fördjupa kunskapen om faktorer med betydelse för bevarande av hälsa hos dessa 85-åringar. Populationsstudien genomfördes via enkätutskick (bl.a. livssituation, livskvalitet), hembesök (bl.a. aktiviteter i dagliga livet (ADL), kognitiva funktioner) och mottagningsbesök (bl.a. nutritionsstatus, rörelseförmåga, kroppslig undersökning, blodprover, läkemedel) under perioden mars 2007 till mars 2008. Vi kartlade även deltagarnas sjukvårdsbesök samt sjukvårdskostnader. Tre år senare, när individerna var 88 år, analyserades även kroppssammansättningen hos delar av populationen. Totalt 496 Linköpingsbor födda 1922, deltog i studien. Andelen som svarade på enkäten var 78 % av alla då levande 85-åringar. Resultaten visar att majoriteten av 85-åringarna klarade att sköta sin hygien (85%) samt huvudsakliga aktiviteter (74%). Sextio procent skattade sin hälsorelaterade livskvalitet som hög trots förekomst av flera kroniska sjukdomar och frekvent användning av hjälpmedel för att förbättra rörligheten. Oberoende riskfaktorer för slutenvård var multipla besök hos distriktsläkare, användande av flera hjälpmedel, förekomst av minst två sjukdomar eller förekomst av hjärtsvikt och arytmi. Multimorbiditet (förekomst av minst två kroniska sjukdomar) var vanligt hos 85-åringarna (68%). Olika kombinationer av sjukdomar hade varierande betydelse för behovet av sjukvård. I clusteranalys, där man försöker gruppera diagnoser med hög sannolikhet att förekomma hos en enskild individ, fann vi några cluster som var starkare relaterade till inläggning i slutenvård än andra. Clustren såg dessutom olika ut mellan män och kvinnor. För män var t.ex. kardiella och för kvinnor t.ex. hjärt-lung-cluster starkare relaterade till slutenvård än enskilda diagnoser. Personer med fetma (body mass index (BMI) ≥30 kg/m2) hade mer problem med rörlighet och instrumentell ADL (IADL) jämfört med de med normal- eller övervikt. Trots ett klart samband mellan fetma och multimorbiditet hade de normalviktiga individerna nästan tre gånger så höga hälso-sjukvårds kostnader som personer med fetma. Bland 88-åriga kvinnor, hade personer med fetma högre bukomfång, mer fettmassa (FM) och mer fettfri massa (FFM) men lägre handstyrka (HS) än de normal- eller överviktiga. Relativ HS, handstyrka i form av kvoter (HS/Vikt, HS/BMI, HS/FFM and HS/FM) hade starkare samband med fysisk funktion (Short Form-36, SF-36PF) än andra enskilda parametrar. Två enskilda parametrar (bukomfång och HS) samt HS/Vikt och HS/FFM var associerade med antal aktiviteter utan svårighet i IADL. Sammanfattningsvis är 85-åringarna inte så skröpliga som de ofta beskrivs. Studien ELSA 85 visar en övervägande positiv bild med bevarad hälsa och funktion för en övervägande del av populationen. De flesta 85-åringarna klarar sig ganska bra trots förekomst av flera sjukdomar. Vissa mönster av multimorbiditet med hjärt- och lungsjukdomar är mer relaterade till slutenvård medan hjärtsvikt hade hög risk för akutmottagningsbesök. Därför är det viktigt att beakta en komplexitet av sjukdomar, inte bara enskilda diagnoser eller antalet diagnoser, i planeringen av den framtida vården. Personer med normal- eller övervikt klarar sin funktion bättre och lever mer självständigt än de som lider av fetma. Den betydande andelen feta med begränsad rörlighet och funktion bland äldre kan komma att påverka behovet av tyngre omsorgsinsatser för den gruppen och är således en varningssignal inför framtiden. / 【目的】      通过研究高龄老人的医疗情况，躯体功能和营养状态，提高对高龄老人健康维护相关因素的理解。 【方法】      ELSA 85 项目（林雪平老年人普查，Elderly in Linköping Screening Assessment）是一个以瑞典林雪平城市中85岁高龄老人（1922年出生， n = 650）为研究对象的人群研究。(1) 2007/03–2008/03：通过邮寄问卷，家庭访问及门诊检查的三个步骤， 我们搜集的数据包括：个人和家庭的背景信息（居住情况，既往的学历和工作程度，健康相关的生活质量EQ-5D等），身体机能（日常生活活动能力ADL评定，移动性测试等）和营养状态（人体测量等）。我们同时还阅览了所有注册的电子病历和每位老年人的年卫生费用。（2） 2010/06–2010/10: 在3年后的随访中，我们对所有88岁的女性老年人增加了人体组成测定和SF-36健康调查量表之生理功能子量表（SF-36PF）的评估。 ELSA 85 项目还包括了其他医学检查项目以及为期一年的随访（2008–2009）, 但这些数据统计并未列入本论文中。 【结果】      论文1：共496人（参与率78％）回寄并参与了问卷调查。总体而言，虽然慢性多病以及日常生活中频繁使用辅助身体移动的器具在85岁高龄老人中非常普遍，多数老年人仍然能够完成个人卫生自理和常规日常活动。他们在健康相关评价问卷中的评估自身健康状态多为良好 (EQ-5D评估）。与住院相关的风险因素包括：全科医生的年就诊次数，有共患疾病（存在两种或两种以上的慢性病征），或者是心力衰竭和心律失常两个单病种。 论文 2：运用聚类分析和性别分层对共患疾病归类，生成男女组各五个集群：血管性类疾病集群，心肺疾病集群，心源性疾病集群（只存于男性组内），躯体-精神心理疾病集群（只存于男性组内），精神心理性疾病集群（只存于女性组内），以及三个和老化过程有关的集群（男性组内1组，女性组内2组）。心力衰竭 （男性组内的比值比 OR = 2.4，95% 的可信区间CI = 1–5.7；女性组内 OR = 3，95% CI = 1.3–6.9) 作为单一病种在预测急诊就诊的模型中比任一共患疾病集群都能解释更多的变量值。男性组内的心源性疾病集群 （OR = 1.6，95% CI = 1–2.7） 和女性组内的心肺疾病集群（OR = 1.7，95% CI = 1.2–2.4）与预测是否住院显著有关。在住院模型中， 心肺疾病集群与男性的心源性疾病集群（OR = 1.6，95% CI = 1–2.4）， 或与女性组内的老化相关集群（OR = 0.5，95% CI = 0.3–0.8）具有显著的交互作用。 论文3：超重（体重指数 BMI：25–29.9 kg/m2）和肥胖（BMI ≥30 kg/m2）者在工具性日常生活活动评定（IADL）比正常体重者（BMI: 18.5–24.9 kg/m2）有更多的困难，再者也比正常体重者有更高伴发疾病的风险。但是在控制了混杂变量（社会人口因素）后，对照正常体重组，只有肥胖者而不是超重者的IADL（户外活动：OR= 2.1，95% CI=1.1–4；居室清洁：OR= 2.2，95% CI= 1.2–4.2）存在更大的困难。虽然肥胖与共患疾病相关（OR= 3，95% CI=1.2–8），有共患疾病的正常体重者的卫生服务消费却是共患疾病的肥胖者的近三倍（ratio= 2.9，95% CI= 1.1–8.1）。 论文 4：88岁女性肥胖组相比正常体重和超重组而言，其腰围值、脂肪群值和祛脂肪群值较大。肥胖者的绝对握力值在校正祛脂肪群后以及握力比值（握力/体重，握力/BMI，握力/祛脂肪群，等等）都较其他两组低。在控制个体的体力活动程度和慢性疾病数量后，握力比值对生理功能（SF-36PF）的解释度（R2：0.52–0.54）高于任何单一人体测量指标或人体组成成分的测定值（R2：0.45–0.51）。腰围值、绝对握力值及握力比值（握力/体重和握力/祛脂肪群）与IADL中无困难的活动项目数显著相关。 【结论】      ELSA 85 人群研究显示了一个相对健康的，个体功能良好的，且使用卫生服务较低的高龄老年群体。心源性和肺部疾病的共患与住院风险相关，而心力衰竭作为单一病种与急诊就诊有显著相关。对85岁高龄老人而言，肥胖（但不是超重）与个体的活动限制和伴发疾病有关。居住于自己住所内的超重高龄老人，其健康水平与正常体重者相近。在88岁女性高龄老人中，肥胖者有较大的腰围值和较低的握力比值（握力/体重和握力值/祛脂肪群）。这些指标比体重指数更好地反映了生理功能及高龄老人的日常独立生活能力。 / Elderly in Linköping Screening Assessment, ELSA 85

This study examined whether a high-intensity interval (IT) or a continuous steady-state (CT) exercise training program had the greatest effect on fat oxidation rates and fat mass loss in a population of untrained overweight and obese females. Thirteen female subjects (VO2peak 30.6 ± 1.29 ml.kg.min-1, BMI 29 ± 0.79, fat mass [FM] 33.3 ± 2.09 kg) were randomly assigned to either a CT (exercise at the relative intensity that elicits the maximal fat oxidation rate [FATmax] ) or an IT (intervals alternating 5 minutes at 40% and 85% VO2peak) training group that exercised approximately 1 hour, 3 days.week-1 for 10 weeks. Body composition assessments, peak oxygen uptake (VO2peak), FATmax and plasma free fatty acid (FFA) concentrations were examined pre- and post-training using dual-energy X-ray absorptiometry (DEXA), ParvoMedics gas analysis system and FFA half micro tests (Roche Diagnostics). No significant differences were found post-training in body weight (kg), body fat (%), fat-free mass, or fat mass (P>0.05). The relative exercise intensity that elicited FATmax was significantly increased from 35.3 ± 2.55% to 44.7 ± 3.56% in the IT group post-training (P <0.05). The maximal fat oxidation rate was determined at a higher relative exercise intensity after 10 weeks of a IT program compared with a CT program, which resulted in longer durations of fat oxidation during submaximal exercise bouts. These data suggest that an IT program induces a greater increase in the relative exercise intensity that elicits maximal fat oxidation after 10 weeks of training compared to a CT program in this population. Although body composition and FATmax were not altered, it is possible that through training induced metabolic adaptations from the IT program, intramuscular triacylglyceride (IMTG) contributions to fat oxidation at a given steady-state work rate could be increased post-training.

Regulary performed exercise may protect against coronary artery disease (atherosclerosis). Fatty meal may influence progression of coronary artery didease, because humans spend too many hours in posprandial state each day. The purpose of this study was to examine the changes in concentration of the blood total cholesterol and body composition after training of wellness aerobics. The study was performed on 21 healthy female subjects aged from 29 to 46 years. The subjects were free from clinical history of bleeding or coagulation disorders, they were healthy. 29 % of subjects were smokers. All subjects were not physically active, they did not do sports for five years. The research was based on antropometrical measures, questionnaires, registration of food allowance, total cholesterol determination in the blood and analysis. Twenty one healthy females followed the wellness aerobics training for 1,5 month and performed 3 training sessions per week. The duration of each session was 45 minutes. Concentration of total cholesterol in the blood and body composition was evaluated before the session of training and after 1,5 month of the wellness aerobics training. The energetical nutritives disbalance was established which manifested in fat and protein overrun and in too scarce amount of carbohydrates. Mathematical statistics method was used to analyse the research data. The significant criterion was p = 0,05. After the wellness aerobics training program was conducted for 1,5... [to full text]

Tyrimo probleminis klausimas: ar laisvalaikiu sportuojančių moterų mityba yra sveikesnė nei nesportuojančių ir ar yra ryšys tarp laisvalaikiu sportuojančių moterų kūno kompozicijos ir maisto raciono. Tyrimo objektas – laisvalaikiu sportuojančių ir nesportuojančių moterų kai kurie kūno kompozicijos rodikliai ir mitybos ypatumai. Tiriamojo darbo tikslas buvo nustatyti laisvalaikiu sportuojančių ir nesportuojančių moterų mitybos ypatumus bei sąsają su riebaline kūno mase. Iškėlėme tokius darbo uždavinius: 1. Įvertinti tiriamųjų kai kuriuos kūno kompozicijos rodiklius (riebalines odos raukšles, KMI, riebalinę kūno masę) bei palyginti juos tarp laisvalaikiu sportuojančių ir nesportuojančių moterų. 2. Įvertinti laisvalaikiu sportuojančių ir nesportuojančių moterų mitybos ypatumus bei juos palyginti. 3. Įvertinti laisvalaikiu sportuojančių moterų mitybos sąsają su riebaline kūno mase. Tyrimo metodai – literatūros apžvalga, antropometriniai matavimai, kūno riebalinės masės procentinis apskaičiavimas, anketinė apklausa, mitybos raciono apklausa, analizė ir matematinė statistika. Tyrimo organizavimas: mūsų tyrimas buvo pradėtas vykdyti 2011 metų gegužės mėnesį, o baigtas – 2012 sausio mėnesį. Tyrimo eigos metu vyko tiriamųjų pasirinkimas, supažindinimas su tyrimo tikslais, metodais. Šiame tyrime dalyvavo dvi tiriamųjų moterų grupės – sportuojančios ir nesportuojančios. Laisvalaikiu sportuojančių moterų grupė buvo iš n=50 tiriamųjų, kurių amžius 25±5 metai. Nesportuojančių... [toliau žr. visą tekstą] / Research problem question: whether leisure exercising women’s nutrition is healthier than unexercising women’s, and whether there is a connection between leisure exercising women’s body composition and diet. The object of research – some of leisure exercising women’s and not exercising women’s body composition details and their nutrition habits. The aim of the study was to determine the connection between the leisure exercising and not exercising women's nutrition peculiarities and their body fat mass. We set the following tasks: 1. To evaluate the research of some indicators of body composition (fat skin folds, BMI, fat body mass) and to compare them among recreational athletes and untrained women. 2. To rate leisure exercising women's and not exercising women's feeding habits and compare them. 3. To rate connection between leisure exercising women’s nutrition and body fat mass. Research methods - review of literature, anthropometric measurements, body fat mass percentage calculation, a questionnaire of nutrition, analysis and mathematical statistics. Research organization: our investigation was launched in 2011 May and completed - 2012 January. During the study course we selected objects, introduced them to research methods. There were two groups of women - leisure exercising (50) aged 25 ± 5 years and not exercising (30) age 24 ± 5 years. After this study, we made the following conclusions: 1. In both groups, leisure exercising and unexercising women, body mass... [to full text]

Mūsų darbo tikslas – nustatyti skirtingų sporto šakų atstovų kai kuriuos kūno kompozicijos rodiklius bei mitybos ypatumus ir palyginti su rekomenduojamom normom. Tyrimo metu kelti uždaviniai: 1) nustatyti trumpųjų nuotolių bėgikų ir nesportuojančių (vyrų ir moterų) bei rankininkių kai kuriuos kūno kompozicijos rodiklius; 2) įvertinti trumpųjų nuotolių bėgikų ir nesportuojančių (vyrų ir moterų) bei rankininkių mitybos ypatumus; 3) palyginti tiriamųjų mitybą su rekomenduojamom normom. Tyrimo objektas - skirtingų sporto šakų atstovų kai kurie kūno kompozicijos rodikliai, bei mitybos ypatumai. Atliekant tyrimą, iškėlėme tokią problemą: šiuolaikiniame sporte didelę reikšmę turi sportininkų mityba bei kūno kompozicijos rodikliai. Tinkama mityba yra labai svarbu tiek gerai sveikatai, tiek geriems rezultatams (Andeson et al., 2000). Kiekvienas sportininkas, siekiantis sėkmingų rezultatų, turi suvokti mitybos svarbą. Gerai subalansuota, racionali dieta yra būtina maksimaliai geram pasirodymui, bet kurioje sporto šakoje (Tipton et al., 2007). Sportininkų mitybos ekspertė Eberle (2000) teigia, kad trys pagrindiniai veiksniai, lemiantys sportininko sėkmę, yra genetika, treniruotė ir mityba. Kadangi genetikos pakeisti negalime, tai privalome visą dėmesį sutelkti į tinkamo treniravimosi ir taisyklingos mitybos organizavimą, treniruotės ir mitybos suderinimą. Dauguma Lietuvos ir pasaulio elitinių sportininkų pripažįsta, kad gerai subalansuota mityba – tai 60-70 proc. sėkmės. Didelio... [toliau žr. visą tekstą] / The aim of the work is to determine some indicators of body composition and nutrition peculiarities of different sports’ athletes and to compare them with recommended values. The tasks of the work: 1) to determine some indicators of body composition of sprinters, handball players and people (men and women) who do not take any exercises; 2) to evaluate nutrition peculiarities of sprinters, handball players and people (men and women) who do not take any exercises; 3) to compare subjects’ nutrition with recommended values. The object of the research: some indicators of the body composition and nutrition peculiarities of different sports’ athletes. The problem of the research: in nowadays sport athletes’ nutrition and indicators of body composition are of great significance. Proper nutrition is very important for both health and good results (Andeson et al., 2000). Each athlete who seeks after successful results has to understand the importance of nutrition. Well balanced and rational diet is necessary for good performance in any sport (Tipton et al., 2007). The expert of athletes’ nutrition Eberle (2000) says that three main factors determining the success of an athlete are genetics, training and nutrition. As one cannot change genetics, all the attention should be concentrated on organization of proper training and regular nutrition and adjustment of training and nutrition. Most of Lithuania‘s and world elite athletes admit that well balanced nutrition forms from 60 to 70... [to full text]