• 생명과학회지
• /
• 제32권4호
• /
• pp.325-330
• /
• 2022

수영은 육상과 더불어 대표적인 기초 종목으로 손, 발을 사용하여 물속에서 헤엄치는 종목이기 때문에 기술적 훈련과 더불어 물의 압력에 따른 신체적 적응이 매우 중요하게 고려된다. 수영은 지상의 운동과는 다르게 물속에서 손과 발을 이용해 나아가고, 물의 저항으로 인해 근육을 움직이는 전신운동으로 높게 평가되고 있으며, 비만의 예방과 혈관질환의 치료에 많이 사용되는 운동 중 하나이다. 비교적 안전한 종목에 속하지만 다른 스포츠 종목들과 비슷하게 크고 적은 스포츠 상해가 발생 한다. 하지만 현재까지 수영 종목에서 유발되는 상해와 재활에 관한 연구 자료는 부족한 상황이다. 수영 선수의 상해는 일반적으로 고강도의 훈련, 많은 훈련 량 등으로 인해 발생하며, 수영 선수들에게 가장 많이 발생하는 상해와 질환으로는 극상근건염(supraspinatus tendinitis), 이두근건염(biceps tendinitis), 슬관절의 내측 활액막염(synovitis), 발등의 신근 건염(extensor tendinitis), 요통(low back pain)을 동반하는 척추분리증(spondylolysis), 척주전방전위증(spondylolisthesis) 등이 있다고 보고되고 있다. 또한 수영 경영 선수의 스포츠상해 부위 및 빈도조사 연구분석에 의하면 상해부위는 어깨관절(50%), 허리(23%), 하지(22%) 등의 순으로 높게 나타났으며, 상해종류로는 근육 손상과 인대손상이 대부분을 차지한다. 본 연구결과 수영 종목의 상해 부위는 상지(목, 어깨, 팔, 손목), 하지상해(무릎, 발목), 및 허리상해 순으로 나타났다. 그리고 영법별 상해분석으로 자유형, 배영, 접영 영법에서는 어깨 부위 상해가 많이 발생하였고 회전근개손상, 충돌증후군, SLAP (superior labral tear from anterior to posterior) 병변 순으로 나타났다. 평영 영법은 하지손상인 무릎손상, 평영과 접영은 척수상해, 접영은 허리상해 순서로 나타났다. 따라서 지도자는 선수들이 부상을 당하지 않도록 충분한 준비운동과 정리운동을 실시하도록 하고, 응급처치를 숙지하여 부상 발생 시 빠른 응급처치로 2차 손상을 예방할 수 있도록 해야 한다. 아울러 코치 및 지도자는 선수들에게 알맞는 재활 방법들을 처치하고, 선수들의 상해 예방과 처치에 대한 이해와 교육이 수반되어야 할 것이다. 추후 수영 영법 별 상해 예방과 상해 처치 그리고 재활방법에 관한 구체적인 기전적 연구들이 수행 되어져야 할 것으로 사료된다.

• 수산경영론집
• /
• 제34권2호
• /
• pp.75-90
• /
• 2003

When we think of fundamental problems of the aquaculture industry, there are several strict conditions, and consequently the aquaculture industry is forced to change. Fish aquaculture has a structural supply surplus in production, aggravation of fishing grounds, stagnant low price due to recent recession, and drastic change of distribution circumstances. It is requested for us to initiate discussion on such issue as “how fish aquaculture establishes its status in the coastal fishery\ulcorner, will fish aquaculture grow in the future\ulcorner, and if so “how it will be restructured\ulcorner” The above issues can be observed in the mariculture of yellow tail, sea scallop and eel. But there have not been studied concerning seabream even though the production is over 30% of the total production of fish aquaculture in resent and it occupied an important status in the fish aquaculture. The objectives of this study is to forecast the future movement of sea bream aquaculture. The first goal of the study is to contribute to managerial and economic studies on the aquaculture industry. The second goal is to identify the factors influencing the competition between production areas and to identify the mechanisms involved. This study will examine the competitive power in individual producing area, its behavior, and its compulsory factors based on case study. Producing areas will be categorized according to following parameters : distance to market and availability of transportation, natural environment, the time of formation of producing areas (leaderㆍfollower), major production items, scale of business and producing areas, degree of organization in production and sales. As a factor in shaping the production area of sea bream aquaculture, natural conditions especially the water temperature is very important. Sea bream shows more active feeding and faster growth in areas located where the water temperature does not go below 13∼14$^{\circ}C$ during the winter. Also fish aquaculture is constrained by the transporting distance. Aquacultured yellowtail is a mass-produced and a mass-distributed item. It is sold a unit of cage and transported by ship. On the other hand, sea bream is sold in small amount in markets and transported by truck; so, the transportation cost is higher than yellow tail. Aquacultured sea bream has different product characteristics due to transport distance. We need to study live fish and fresh fish markets separately. Live fish was the original product form of aquacultured sea bream. Transportation of live fish has more constraints than the transportation of fresh fish. Death rate and distance are highly correlated. In addition, loading capacity of live fish is less than fresh fish. In the case of a 10 ton truck, live fish can only be loaded up to 1.5 tons. But, fresh fish which can be placed in a box can be loaded up to 5 to 6 tons. Because of this characteristics, live fish requires closer location to consumption area than fresh fish. In the consumption markets, the size of fresh fish is mainly 0.8 to 2kg.Live fish usually goes through auction, and quality is graded. Main purchaser comes from many small-sized restaurants, so a relatively small farmer and distributer can sell it. Aquacultured sea bream has been transacted as a fresh fish in GMS ,since 1993 when the price plummeted. Economies of scale works in case of fresh fish. The characteristics of fresh fish is as follows : As a large scale demander, General Merchandise Stores are the main purchasers of sea bream and the size of the fish is around 1.3kg. It mainly goes through negotiation. Aquacultured sea bream has been established as a representative food in General Merchandise Stores. GMS require stable and mass supply, consistent size, and low price. And Distribution of fresh fish is undertook by the large scale distributers, which can satisfy requirements of GMS. The market share in Tokyo Central Wholesale Market shows Mie Pref. is dominating in live fish. And Ehime Pref. is dominating in fresh fish. Ehime Pref. showed remarkable growth in 1990s. At present, the dealings of live fish is decreasing. However, the dealings of fresh fish is increasing in Tokyo Central Wholesale Market. The price of live fish is decreasing more than one of fresh fish. Even though Ehime Pref. has an ideal natural environment for sea bream aquaculture, its entry into sea bream aquaculture was late, because it was located at a further distance to consumers than the competing producing areas. However, Ehime Pref. became the number one producing areas through the sales of fresh fish in the 1990s. The production volume is almost 3 times the production volume of Mie Pref. which is the number two production area. More conversion from yellow tail aquaculture to sea bream aquaculture is taking place in Ehime Pref., because Kagosima Pref. has a better natural environment for yellow tail aquaculture. Transportation is worse than Mie Pref., but this region as a far-flung producing area makes up by increasing the business scale. Ehime Pref. increases the market share for fresh fish by creating demand from GMS. Ehime Pref. has developed market strategies such as a quick return at a small profit, a stable and mass supply and standardization in size. Ehime Pref. increases the market power by the capital of a large scale commission agent. Secondly Mie Pref. is close to markets and composed of small scale farmers. Mie Pref. switched to sea bream aquaculture early, because of the price decrease in aquacultured yellou tail and natural environmental problems. Mie Pref. had not changed until 1993 when the price of the sea bream plummeted. Because it had better natural environment and transportation. Mie Pref. has a suitable water temperature range required for sea bream aquaculture. However, the price of live sea bream continued to decline due to excessive production and economic recession. As a consequence, small scale farmers are faced with a market price below the average production cost in 1993. In such kind of situation, the small-sized and inefficient manager in Mie Pref. was obliged to withdraw from sea bream aquaculture. Kumamoto Pref. is located further from market sites and has an unsuitable nature environmental condition required for sea bream aquaculture. Although Kumamoto Pref. is trying to convert to the puffer fish aquaculture which requires different rearing techniques, aquaculture technique for puffer fish is not established yet.