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Reduced shoulder proprioception due to fatigue after repeated handball throws and evaluation of test-retest reliability of a clinical shoulder joint position test. 反复投掷手球后因疲劳导致的肩部本体感觉减弱,以及对临床肩关节位置测试的重复测试可靠性进行评估。
3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-03-01 Epub Date: 2022-11-15 DOI: 10.1177/17585732221139795
Peter Sutton, Marie Lund Ohlsson, Ulrik Röijezon

Background: Proprioception is vital for motor control and can be disturbed, for example, due to fatigue or injury. Clinical feasible, reliable and valid tests of shoulder proprioception are warranted. The aim was to investigate the effects of local fatigue on shoulder proprioception and the reliability of a feasible joint position sense test using an experimental repeated measures design.

Method: Forty participants repeated a shoulder joint position sense test to assess test-retest reliability. The test was then utilized on a subgroup of handball players who were subjected to five bouts of a repeated throwing task with the dominant hand. The effect of local fatigue was investigated by comparing the fatigued with the non-fatigued shoulder.

Results: There was a significant interaction for the arm × bout (p = 0.028, ηp2 = 0.20) and a significant effect for the arm (p = 0.034, ηp2 = 0.35) with a significant decrease in joint position sense for the throwing arm compared to the non-throwing arm. The intraclass correlation coefficient was 0.78 (95% CI = [0.57; 0.89]). The standard error of measurement between trials was 0.70° (range: 0.57°-0.90°).

Discussion: The results indicate that repeated throwing to fatigue disturbs shoulder joint position sense. Assessment with the modified test showed acceptable reliability and can be a valuable assessment tool in the clinic.

背景:本体感觉对运动控制至关重要,但可能因疲劳或受伤等原因而受到干扰。临床上需要对肩部本体感觉进行可行、可靠和有效的测试。本研究旨在通过实验性重复测量设计,研究局部疲劳对肩部本体感觉的影响以及可行的关节位置感测试的可靠性:方法:40 名参与者重复进行肩关节位置感测试,以评估测试重复可靠性。然后在手球运动员分组中使用该测试,让他们用优势手进行五次重复投掷任务。通过比较疲劳和非疲劳肩部,研究了局部疲劳的影响:结果:与非投掷手臂相比,投掷手臂的关节位置感明显下降,手臂×回合存在明显的交互作用(p = 0.028,ηp2 = 0.20),手臂存在明显的效应(p = 0.034,ηp2 = 0.35)。类内相关系数为 0.78 (95% CI = [0.57; 0.89])。试验之间的测量标准误差为 0.70°(范围:0.57°-0.90°):讨论:研究结果表明,反复投掷致疲劳会干扰肩关节位置感。讨论:结果表明,疲劳状态下的反复投掷会干扰肩关节位置感,而改良测试的评估结果显示其可靠性是可以接受的,可以作为临床上一种有价值的评估工具。
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引用次数: 0
Differential taxation in agricultural credit market 农业信贷市场的差别税收
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-26 DOI: 10.1002/agr.21926
Madhav Regmi, Allen M. Featherstone

This study examines whether the market competitiveness of farm loan suppliers is affected by the US tax policy for the farm credit system (FCS) and its potential spillover on the farmers' cost of borrowing. We exploit the variation in the corporate income tax rate to estimate its relationship with the farm debt share of the FCS and the potential spillover effect on the estimated cost of borrowing for agricultural loans. Results suggest that a 10% rise in the state (federal) tax rate is associated with an increase in FCS's total farm debt market share by 1.76% (3.76%). A 10% rise in the FCS total farm debt market share tends to increase the cost of borrowing on agricultural loans by 0.06%. Overall, the findings imply that favorable tax treatment could increase FCS' competitiveness in the agricultural lending market. Also, an increase in the interest rate on farm debt is correlated with the increasing market share of FCS in the agricultural credit market. [EconLit Citations: Q14, N22, H2, H7, G21].

本研究探讨了农业贷款供应商的市场竞争力是否受到美国农业信贷系统(FCS)税收政策的影响,以及该政策对农民借贷成本的潜在溢出效应。我们利用企业所得税税率的变化来估算其与 FCS 的农场债务份额之间的关系,以及对农业贷款借贷成本估算的潜在溢出效应。结果表明,州(联邦)税率每上升 10%,金融服务公司的总农业债务市场份额就会增加 1.76% (3.76%)。联邦统计局的农场债务市场份额每增加 10%,农业贷款的借贷成本就会增加 0.06%。总之,研究结果表明,优惠的税收待遇可以提高金融服务公司在农业贷款市场上的竞争力。此外,农业债务利率的增加与金融服务公司在农业信贷市场中的市场份额增加相关。[经济文献引用:Q14, N22, H2, H7, G21]。
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引用次数: 0
Measuring specialty crop grower willingness to pay for genetic modification and genetic editing 衡量特种作物种植者为转基因和基因编辑付费的意愿
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-21 DOI: 10.1002/agr.21911
Marie Abbey, Alan G. Smith, Chengyan Yue, Corissa Marson, Yufeng Lai, Carrie Stowers

In contrast to the widespread adoption of agricultural commodities modified using biotechnology, the adoption rate of bioengineered specialty crops by growers remains low. The use of bioengineered crops has been controversial since their introduction in the 1990s due to concerns about their potentially harmful effects to human health, the environment, and other socioeconomic issues. To identify grower preferences, perceived opportunities, and barriers to growing bioengineered crops, we surveyed Minnesota specialty crop growers using a web-based survey. The survey measured whether adoption rates are influenced by the specific trait of the modification, the method of bioengineering (genetically modified [GM] vs. genetically edited [GE]), or the end use of the crop being grown (ornamental vs food). Overall willingness-to-pay for both GM and GE potatoes was significantly lower than for conventional potatoes, and nearly a quarter (25%) of our respondents never chose a bioengineered option no matter the benefits. Results were similar for petunias, but fewer respondents (18%) refused to consider the bioengineering option. The type of bioengineering did not have as significant an impact on adoption rate as price or end use. The bioengineered ornamental crop had a higher willingness to adopt than the bioengineered food crop. [EconLit Citations: Q160 Agricultural R & D; Agricultural Technology; Biofuels; Agricultural Extension Services. O330 Technological Change: Choices and Consequences; Diffusion Processes].

与广泛采用生物技术改造农产品形成鲜明对比的是,种植者对生物工程特种作物的采用率仍然很低。由于担心生物工程作物可能对人类健康、环境和其他社会经济问题产生有害影响,自 20 世纪 90 年代引入以来,生物工程作物的使用一直备受争议。为了确定种植者的偏好、感知到的机遇以及种植生物工程作物的障碍,我们利用网络调查对明尼苏达州特种作物种植者进行了调查。该调查衡量了采用率是否受改良的具体性状、生物工程方法(转基因 [GM] 与基因编辑 [GE])或所种植作物的最终用途(观赏与食用)的影响。对转基因马铃薯和基因工程马铃薯的总体支付意愿明显低于对传统马铃薯的支付意愿,近四分之一(25%)的受访者无论收益如何都不会选择生物工程选项。牵牛花的结果与此类似,但拒绝考虑生物工程方案的受访者较少(18%)。生物工程的类型对采用率的影响不如价格或最终用途大。生物工程观赏作物的采用意愿高于生物工程粮食作物。[EconLit引文:Q160 农业研发;农业技术;生物燃料;农业推广服务。O330 技术变革:选择与后果;扩散过程]。
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引用次数: 0
Agri-food trade liberalization, export prices, and quality upgrading: Evidence from the meat and chocolate sectors in OECD countries 农业食品贸易自由化、出口价格和质量升级:经合组织国家肉类和巧克力行业的证据
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-20 DOI: 10.1002/agr.21925
Aristide Bonsdaouêndé Valea, Lota D. Tamini, Damien Rousselière

This article examines the impact of trade liberalization on export prices and quality. The article is innovative in two respects. First, unlike previous studies, it considers both input and output tariffs simultaneously in a theoretical model. Second, it empirically tests the effects of a combination of specific and ad-valorem tariffs on quality improvement. The theoretical analysis suggests that when firms face reduced output and input tariffs, they tend to improve their export quality and increase export prices. Using export data from 33 OECD countries, the empirical analysis demonstrates that output tariff reduction increases export quality but decreases prices. However, the effects of input tariff reduction on price and quality depend on product differentiation. The results also indicate that the presence of specific tariffs increase product quality while amplifying the positive effects of the reduction of ad-valorem tariffs on quality. This implies that to improve export quality, reducing ad-valorem tariffs is more efficient than a specific tariff. [EconLit Citations: F12, F14, Q17].

本文探讨了贸易自由化对出口价格和质量的影响。文章在两个方面具有创新性。首先,与以往的研究不同,它在理论模型中同时考虑了投入和产出关税。其次,文章通过实证检验了特定关税和从价关税相结合对质量提高的影响。理论分析表明,当企业面临产出和投入关税降低时,它们倾向于提高出口质量和出口价格。利用 33 个经合组织国家的出口数据进行的实证分析表明,降低产出关税会提高出口质量,但会降低价格。然而,降低投入品关税对价格和质量的影响取决于产品差异。结果还表明,特定关税的存在提高了产品质量,同时放大了从价关税降低对质量的积极影响。这意味着,要提高出口质量,降低从价关税比特定关税更有效。[经济学引文:F12、F14、Q17]。
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引用次数: 0
Does the advertising of plant-based burgers attract meat consumers? The influence of new product advertising on consumer responses 植物汉堡的广告能吸引肉类消费者吗?新产品广告对消费者反应的影响
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-17 DOI: 10.1002/agr.21916
Lingxiao Wang, Wenying Li, Yuqing Zheng

The “meat” marketing of new plant-based burgers distinguished them from traditional vegan burgers, yet it is still unknown if and to what extent this advertising appeals to meat consumers. We employ a novel digital advertisement dataset from Nielsen Ad Intel to investigate the market entry and advertising patterns of the Impossible Burger, one of the leading brands in the plant-based meat market. By merging weekly ad views at the DMA market level with Nielsen Homescan Panel, we find that prior purchases of meat burgers reduce the likelihood of consumers buying the new plant-based burger, whereas past vegan burger purchases elevate this probability. While advertising did boost the average purchasing likelihood for the Impossible Burger, the enhancement in purchase probability for meat burger consumers is approximately one fifth of that observed for vegan burger consumers. These findings have implications to effectively marketing plant-based meat products to different consumer groups [EconLit Citations: D12, M37, M31, L66].

新型植物性汉堡的 "肉类 "营销将它们与传统的素食汉堡区分开来,但这种广告是否以及在多大程度上吸引了肉类消费者仍是个未知数。我们利用尼尔森广告英特尔(Nielsen Ad Intel)提供的新型数字广告数据集,对植物肉类市场的领先品牌之一 "不可能汉堡"(Impossible Burger)的市场进入和广告模式进行了调查。通过将 DMA 市场层面的每周广告浏览量与尼尔森家庭扫描面板(Nielsen Homescan Panel)合并,我们发现消费者之前购买过肉类汉堡会降低其购买新植物汉堡的可能性,而之前购买过素食汉堡则会提高这一可能性。虽然广告确实提高了 "不可能汉堡 "的平均购买可能性,但肉类汉堡消费者购买可能性的提高大约是素食汉堡消费者购买可能性的五分之一。这些发现对有效地向不同消费群体推销植物性肉类产品具有重要意义[经济学引文:D12, M37, M31, L66]。
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引用次数: 0
The impacts of extreme heat on wage losses: Evidence from the Chinese agri-food industry 极端高温对工资损失的影响:来自中国农业食品行业的证据
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-17 DOI: 10.1002/agr.21924
Xiaoke Zhu, Qiyun Deng

This paper investigates the effects of extremely high temperatures on wage losses for workers in the Chinese agri-food industry. Our estimated results suggest extreme heat is associated with a decrease in worker wages, and that these welfare losses could be attributed to the adverse impacts of extremely hot days on worker productivity. We also observe that, compared to male workers, female workers are more likely to bear wage losses when exposed to extremely hot weather. Furthermore, workers in private firms may experience more wage losses due to extremely hot days than those in other ownership types. Regarding the industry-level heterogeneity analysis, we find that wage losses in the agri-food manufacturing industry are more severe than those in the agri-food processing industry, while no significant wage losses are observed in the beverages and alcohol industry. In the long term, wage losses induced by climate change are projected to rise by 10.93% under RCP8.5, if no extra adaptation actions are implemented. [EconLit Citations: O13, P46, Q54]

本文研究了极端高温对中国农业食品行业工人工资损失的影响。我们的估计结果表明,极端高温与工人工资下降有关,而这些福利损失可能是由于极端高温天对工人生产率的不利影响造成的。我们还发现,与男性工人相比,女性工人在极端高温天气下更容易遭受工资损失。此外,与其他所有制类型的企业相比,私营企业的工人可能因极端高温天而遭受更多工资损失。关于行业层面的异质性分析,我们发现农业食品制造业的工资损失比农业食品加工业更为严重,而饮料和酒类行业则没有观察到明显的工资损失。从长期来看,如果不采取额外的适应行动,预计在 RCP8.5 条件下,气候变化引起的工资损失将增加 10.93%。[经济学引文:O13, P46, Q54].
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引用次数: 0
Promoting healthy diets through food reformulation: The demand for “better-for-you” beverage 通过食品改良促进健康饮食:对 "有益健康 "饮料的需求
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-14 DOI: 10.1002/agr.21921
Pei Zhou, Yizao Liu

This study explores how nutrients, new ingredients, and health claims from product reformulation influence consumer decisions, dietary intake, and population health in the beverage market. We focus on the beverage market in the United States as a case study because of the emerging health demand for “better-for-you” beverage options. We formulate a random coefficient discrete choice model to evaluate consumer preference for reformulated products in the nonalcoholic beverages market. We find that new ingredients that provide functionality such as energy ingredients, carbonation, or no artificial flavors have a significant positive impact on consumer choices. Further, the use of health claims can significantly increase consumer demand for beverages. Results from simulations suggest that the use of “no/low sugar,” “no/low sodium,” and “no artificial sweetener” health claims will increase the net sugar and sodium intakes from sugar-sweetened beverages, leading to an increase in body mass index and the incidence of coronary heart disease (CHD) and diabetes. The nutrient reformulation by cutting sugar and sodium content by 10%, on the other hand, will result in a decrease in sugar and sodium consumption, and further lower the incidence of CHD and stroke. However, the policy aimed at lowering the intake of one single nutrient may have an unintended spillover effect on other nutrient intakes, and policymakers should take a comprehensive approach and consider the broader nutrient impact of any policy aimed at reducing a specific nutrient.

本研究探讨了在饮料市场中,营养素、新配料和产品重新配制的健康声明如何影响消费者的决策、膳食摄入量和人口健康。我们将美国的饮料市场作为研究案例,因为人们对 "更有益健康 "的饮料选择有着新的健康需求。我们建立了一个随机系数离散选择模型,以评估消费者对非酒精饮料市场中重新配制产品的偏好。我们发现,提供能量成分、碳酸化或无人工香精等功能性的新成分对消费者的选择有显著的积极影响。此外,健康声明的使用也会大大增加消费者对饮料的需求。模拟结果表明,使用 "无糖/低糖"、"无钠/低钠 "和 "无人工甜味剂 "的健康声称会增加含糖饮料中糖和钠的净摄入量,从而导致体重指数以及冠心病(CHD)和糖尿病发病率的增加。另一方面,通过将糖和钠的含量减少 10%来重新制定营养素,将使糖和钠的摄入量减少,并进一步降低冠心病和中风的发病率。然而,旨在降低单一营养素摄入量的政策可能会对其他营养素的摄入量产生意想不到的溢出效应,政策制定者应采取综合方法,考虑任何旨在减少特定营养素的政策对更广泛营养素的影响。
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引用次数: 0
Land consolidation, cropland use, and vegetation productivity 土地整理、耕地利用和植被生产力
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-14 DOI: 10.1002/agr.21923
Alper Demirdogen

Land consolidation represents a valuable tool for enhancing agricultural productivity. However, there is a notable gap in the literature, with few studies effectively estimating the impact of land consolidation on microlevel crop changes. In our study, we estimated how land consolidation affects cropland use and vegetation productivity in Turkey, specifically examining wheat and corn. To analyze microlevel datasets from various villages, we applied multiple difference-in-differences approaches. Our results show that land consolidation affects farmers' cropland usage, particularly transitioning from wheat to corn. Land consolidation also leads to increased yields for both wheat and corn, although these benefits are not long-lasting and diminish within a few years. Thus, our findings provide valuable insights for land-use policy and planning, highlighting the critical role of land consolidation in determining farmers' cropland uses and its effect on overall productivity [EconLit Citations: Q12, Q15, Q18].

土地整理是提高农业生产力的重要手段。然而,文献中存在明显的空白,很少有研究能有效估计土地整理对微观作物变化的影响。在我们的研究中,我们估算了土地整理如何影响土耳其的耕地使用和植被生产力,特别是小麦和玉米。为了分析来自不同村庄的微观数据集,我们采用了多种差分法。我们的研究结果表明,土地整合会影响农民对耕地的使用,尤其是从小麦到玉米的过渡。土地整理还能提高小麦和玉米的产量,但这些好处并不持久,在几年内就会消失。因此,我们的研究结果为土地利用政策和规划提供了有价值的见解,突出了土地整理在决定农民耕地用途方面的关键作用及其对整体生产率的影响[经济学引文:问题 12、问题 15、问题 18]。
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引用次数: 0
Reformulation of processed foods: Mixed effects on salt and saturated fatty acids intake in France 加工食品的重新配方:对法国盐和饱和脂肪酸摄入量的混合影响
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-13 DOI: 10.1002/agr.21914
Marine Spiteri, Ghislaine Narayanane, Vincent Réquillart, Louis-Georges Soler

Encouraging the food industry to reformulate their products is a possible public intervention to improve diet quality. In this paper, we assess the impact of food reformulation on per capita salt and saturated fatty acids (SFAs) intake, in France, for four product categories, namely, potato chips, fresh pizzas, frozen pizzas, and frozen meals, taking into account the changes in products' nutritional quality and consumer choices. Nutrient intake is calculated by matching data on food purchases and nutritional data, collected at the same date. An algorithm is run to disentangle the specific effect of food reformulation. We find that food reformulation, which is based on voluntary individual firm choices or voluntary industry-wide agreement in our case studies, contributes to decrease SFAs and salt intake in seven out of eight cases. However, the magnitude of the impact is moderate, except in the case of potato chips for which a much stronger impact is observed. Product renewal has an ambiguous effect, depending on the nutrient considered. By contrast, changes in consumer behavior increase the intake of SFAs and salt in all cases. Finally, food reformulation generally benefits all consumers equally, regardless of income or age. For food categories with consumption disparities, product reformulation can reduce heterogeneity in nutrient intake across socioeconomic groups, provided that recipes are greatly and widely improved  [EconLit Citations: D12, D22, I1].

鼓励食品行业重新配制产品是改善饮食质量的一种可行的公共干预措施。在本文中,我们考虑到产品营养质量的变化和消费者的选择,评估了法国四类产品,即薯片、新鲜披萨、冷冻披萨和冷冻餐的食品改良对人均盐和饱和脂肪酸(SFAs)摄入量的影响。营养摄入量的计算方法是将同一日期收集的食品购买数据与营养数据进行比对。通过运行一种算法来分析食品改良的具体影响。我们发现,在我们的案例研究中,基于个别企业的自愿选择或全行业的自愿协议而进行的食品改良,在八种情况中有七种有助于减少反式脂肪酸和盐的摄入量。然而,除了薯片的影响更大外,其他食品的影响幅度都不大。产品更新的影响不明确,取决于所考虑的营养素。相比之下,在所有情况下,消费者行为的改变都会增加饱和脂肪酸和盐的摄入量。最后,食品改良通常会使所有消费者平等受益,无论其收入或年龄如何。对于存在消费差异的食品类别,产品改良可以减少不同社会经济群体之间营养素摄入量的差异,前提是食谱得到大量和广泛的改进[经济学引文:D12、D22、I1]。
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引用次数: 0
State labeling's impact on geographic boundaries of local 州标签对地方地理边界的影响
IF 2.1 3区 经济学 Q2 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2024-02-10 DOI: 10.1002/agr.21905
Kathryn Fife, William Secor, Benjamin Campbell

Local labeling is an important issue within the horticultural industry as many producers have devoted considerable resources to advertising their products as local. Further, all states have implemented some form of local labeling program to increase local purchasing. As states expand the reach of these programs, the programs begin to compete as awareness and perception move across state lines. Using an online survey to study consumers in the Southeastern United States, we look to identify how state labeling programs are viewed in nearby states. Notably, we assess awareness, perception, and its impact on the local definition of these programs in their “home” state as well as nearby states. Specifically, we evaluate the impact of nine Southeastern state-level branding programs. Our results indicate that consumers are more aware of their home state's local label, but awareness does exist for other states' labels. We also find that a home state label moves some consumers to a more state-level local boundary, while seeing another state's label increases the boundary for what is perceived as local [EconLit Citation: Q13].

本地标签是园艺产业中的一个重要问题,因为许多生产商都投入了大量资源来宣传他们的产品是本地产品。此外,各州都实施了某种形式的本地标签计划,以增加本地采购。随着各州扩大这些计划的覆盖范围,这些计划开始出现竞争,因为人们的意识和观念开始跨越州界。通过对美国东南部消费者的在线调查,我们希望了解邻近各州对州标签计划的看法。值得注意的是,我们评估了 "家乡 "和邻近各州对这些计划的认识、看法及其对当地定义的影响。具体而言,我们评估了东南部九个州级品牌计划的影响。我们的研究结果表明,消费者更了解本州的本地标签,但对其他州的标签也有了解。我们还发现,本州标签会使一些消费者更倾向于州一级的本地边界,而看到其他州的标签则会增加对本地认知的边界[经济学引文:Q13]。
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引用次数: 0
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