【運動要熱身】熱身時間因人而異
⭐夏天熱身時間可以短一點
⭐亦要視乎進行哪類運動而定
#星期一踢走BlueMonday
運動前熱身重點
不正確的運動方式容易造成運動創傷,熱身運動就是最常被忽略的一環;熱身能提升體溫、增加肌肉彈性及神經靈敏度,更可增加肌腱及靭帶的延展性,減少拉傷肌肉的可能。
何謂足夠的熱身運動?要視乎年紀、體質、天氣、運動強度而定,進行帶氧運動例如慢跑,需要的熱身時間相對短;如進行短期爆發且高強度的無氧運動,例如100米賽跑、籃球、欖球等,需要的熱身時間相對長,目的是令體溫上升、心跳頻率增加,達到輕微出汗的程度,令身體能盡快適應運動強度。然而熱身時間並非越長越好,如過度的話會造成體力下降或疲勞,影響運動效果。
簡易熱身運動推介:
👩🏻 頭頸
右手放在頭部左側,把頭輕輕往右面壓,讓右耳拉近肩膊,維持動作約15秒,換左手重覆動作。
💪🏻 上肢
舉高右手,屈曲並以指尖點着背部,左手將右手踭向左拉,令右肩有拉緊感覺,維持動作約15秒,左手重覆動作。
🦵🏻 下肢
動作一:前後腳站立,腳尖向前,腳跟著地,前腳屈曲,後腳拉直,上身保持垂直重心向下壓,令後腳小腿肌肉有拉扯感覺,維持動作約15秒,換另一隻腳重覆動作。
動作二:右腳向後屈起,以右手從後握着右腳腳掌,用點力向上拉,大腿保持伸直讓肌肉有拉扯感覺,可找扶手協助平衡,維持動作約15秒,左腳重覆動作。
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Warm-up before exercising
Improper exercise forms and motions can cause injuries, and more often than not, it is due to the lack of warm-ups. Warming up can increase the body temperature, improve the elasticity of muscles and the sensitivity of nerve receptors, hence, reducing chances of injuries.
So, how long should a warm-up last? It depends on the individual’s age, body constitution, the weather, and the intensity of the sport. Aerobic exercises such as slow jog would require a shorter warm-up time.
On the other hand, anaerobic exercises that are of short length with high intensity such as 100m dash, basketball, and rugby warrants a longer warm-up. This is to increase the body temperature and heart rate and to help the body to sweat a little, so the body can get accustomed to the intensity more effectively.
Yet, it does not mean the more time you spend on warm-up, the better it is, because excessive warming up can reduce the stamina and cause exhaustion even before the actual sport takes place.
Some simple warm-ups:
💪🏻 Head and Neck
Place your right hand on the left side of your head and gently push your head towards the right side until the right ear is close to the shoulder. Keep the position for 15 seconds. Repeat with left hand on right side of head.
💪🏻Upper limbs
Raise your right hand and bend it downwards with finger tips touching your back. Use your left hand to pull your right elbow towards the left until you feel tightness on the right shoulder. Keep the position for 15 seconds. Repeat with left hand.
🦵🏻 Lower limbs
Action 1: Stand with one leg in front of the other, point the feet to the front, and make sure the ankles are on the ground. Bend the front leg and straighten the other. Keep the body straight and lower the center of gravity, so you can feel tension on the calves. Maintain the same position for 15 seconds and repeat the same process for the other feet.
Action 2: Bend the right leg backward and hold the feet with the right hand. Pull the leg upward as much as possible, but keep the thigh straight and make sure there is tension in the muscles. Use a handrail to stabilize the body, if necessary. Maintain the same position for 15 seconds and repeat the same process for the other feet.
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#男 #女 #我狀態OK
同時也有21部Youtube影片,追蹤數超過81萬的網紅V科技奇趣,也在其Youtube影片中提到,This hydraulic flatbed vehicle has a total of 1152 wheels, arranged so that the end is not visible at a glance. This kind of car can be said to be the...
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body center of gravity 在 辣媽英文天后 林俐 Carol Facebook 的最讚貼文
打鐵趁熱!
送上台大物理系莊學長提供的「物理大餐」Part 2️⃣!
———————————————————————
⛓ 俐媽英文教室—物理單字篇part 2(古典物理學常用英文詞彙):
🧲 Classical physics 古典物理學
⭐️ 運動
1. kinematics (n.) 運動學 / dynamics (n.) 動力學
2. motion (n.) 運動
(運動學探討: translational (位置轉換)、rotational (轉動)、vibrational (震動) 等)
3. point particle (n.) 質點
4. trajectory (n.) 軌跡 (⚠️ -ject: shoot)
5. vector (n.) 向量 / scalar (n.) 純量
6. position (n.) 位置 (⚠️ pos: put)
7. displacement (n.) 位移 / distance (n.) 路徑長
8. velocity (n.) 速度 / speed (n.) 速率
9. acceleration (n.) 加速度
10. jerk (n.) 急跳度
11. average (a.) 平均的 / instantaneous (a.) 瞬間的 / constant (a.) 固定的
12. projectile motion (n.) 拋體運動
13. circular motion (n.) 圓周運動(⚠️ circum: around)
14. angular velocity (n.) 角速度
15. angular acceleration (n.) 角加速度
16. centripetal acceleration (n.)向心加速度
⭐️ Newtonian mechanics (classical mechanics) 牛頓力學
(Newton’s 3 laws)
17. inertia (n.) 慣性
18. force (n.) 力
* friction (n.) 摩擦力 (kinetic + ~ 動摩擦力 / static + ~ 靜摩擦力)
* tension (n.) 張力 / drag (force) (n.) 阻力 / gravity (n.) 重力
19. free-body diagram (n.) 力圖分析
20. equilibrium (n.) 平衡(⚠️ equi: equal)
* stable 穩定 / unstable 不穩定 / neutral 隨遇 (中性) + ~
⭐️ 能量、動量與彈碰
21. work (n.) 功
mechanical energy (n.) 力學能
the principle of the conservation of mechanical energy (n.) 力學能守恆原理
22. potential energy (n.) 位能 (勢能) / kinetic energy (n.) 動能
23. conservative force (n.) 保守力
24. momentum (n.) 動量 (linear + ~ 線動量 / angular + ~ 角動量)
* the conservation of linear momentum (n.) 線動量守恆
* the conservation of angular momentum (n.) 角動量守恆
25. impulse (n.) 衝量
26. collision (n.) 碰撞
elastic + ~ 彈性 / inelastic + ~ 非彈性
27. center of mass (CM) (n.) 質心
28. rigid body (n.) 剛體
⭐️ 重力與場
29. the principle of superposition (n.) 疊加原理
30. field (n.) 場 (⚠️ 英模曾經抄過各種「場」大餐,記得複習)
* gravitational field (n.) 重力場
* electromagnetic field (n.) 電磁場
⭐️ 克卜勒定律 (Keplers’ laws of planetary motion)
31. orbit (n.) 軌道
cf. orbital (n.) 軌域 (在高三化學淺談量子力學會講)
32. focus (n.) 焦點 (pl: foci)
33. perihelion (n.) 近日點 / aphelion (n.) 遠日點
cf. perigee (n.) 近地點 / apogee (n.) 遠地點
34. elliptical (a.) 橢圓的
35. escape velocity (n.) 脫離速度
———————————————————————
好多字俐媽都懂,
啊它們到底在講什麼?😂😂
(果然是門外漢哪⋯⋯)
感謝莊學長🙏🏼
.
#俐媽英文教室
#俐媽英文教室物理篇
#歡迎其他領域孩子投稿貢獻
#傳道有先後
#術業有專攻
#台大明明精銳盡出
body center of gravity 在 CheckCheckCin Facebook 的最佳解答
【暖男養成記】好感度Up的貼心行為
⭐穿高跟鞋走路變女王
⭐風光背後有苦自己知
#星期一踢走BlueMonday
如何照料高跟鞋女生
穿高跟鞋的女生走起路來無疑是婀娜多姿,雙腿顯得更修長,但你知道穿高跟鞋對身體造成的傷害嗎?尖細鞋頭令腳容易出現疼痛、水泡、拇趾外翻等症狀;腳跟踮起令肌肉長期繃緊,腳部血液不能流通,容易出現氣血瘀滯的情況;高跟鞋令人重心前移、骨盆前傾,影響腰椎、頸椎健康,隨時出現腰痛、頸椎病等問題。如果因為工作關係女生需要長時間穿高跟鞋,記得多表達你的關心,你可以做的最少有以下四點:
1. 拖著她慢慢走
當女生穿著高跟鞋時,雙腳容易浮腫又疲累,請減慢步速遷就女生,並好好拖實她的手,穿高跟鞋時扭傷腳踝的機會比較高。
2. 愛心足浴
晚上為她準備足浴,最簡單就是準備一盆約攝氏40度的暖水,水量浸過腳跟,讓她浸腳20至30分鐘,足浴有助氣血運行,也能令心情放鬆。
3. 小腿按摩
多穿高跟鞋的話小腿都比較累,立即化身按摩師按摩一下她的雙腿吧!記得多按兩下承山穴(小腿肚肌肉下方的凹陷處),有助促進小腿血液循環,紓緩腳痛及腳抽筋,亦能美化小腿曲線。
4. 準備替換鞋
如果你會駕車接送她的話,在車內準備一雙舒適的平底鞋給她替換吧。
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Take care of high heel wearing ladies
Women with heels no doubt are more feminine and would seem to have a pair of long and lean legs, but do you know the damage heels can cause to the body?
Pointed heels can cause pain to the legs, blister and bunion (deformity of the joint connecting the big toe to the foot). Walking tiptoe creates constant muscle tension, thus disrupting blood circulation to the feet and forming blood stasis.
Wearing heels can also cause the center of gravity and pelvis to shift forward, which will adversely affect the lumbar and cervical spine, hence leading to problems like pain in the waist and cervical spondylosis.
If you notice your female friends have been wearing heels for an extended period, do show that you care by doing the four things below:
1. Walk with her slowly
Women with heels normally have swollen and tired feet, please slow down, and even hold their hands. There is also a higher chance of them spraining their ankles, so we need to be on alert.
2. Foot bath with love
Prepare a footbath at night, even if it’s just a bowl of 40-degree Celsius warm water. The water level should stay above the heels. Allow them to submerge their feet for about 20 – 30 minutes. Footbath can help improve blood circulation and relieve tension.
3. Massage the calves
Walking in heels puts great pressure on the lower leg, so become a masseur and give them a calf message! Remember to massage the ‘cheng shan’ acupoint (the dent in the calf muscles) to improve blood circulation, relieve pain and cramp, at the same time, improve the curve line of the calves.
4. Prepare a pair of flats
If you are picking them up, do prepare a pair of comfortable flats for them to change in the car.
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#男 #女 #我疲憊 #氣滯 #血瘀
body center of gravity 在 V科技奇趣 Youtube 的最佳貼文
This hydraulic flatbed vehicle has a total of 1152 wheels, arranged so that the end is not visible at a glance. This kind of car can be said to be the car with the most wheels in the world. Each wheel can carry more than 30 tons. The total load of the whole car exceeds 50,000 tons. It contains many top-notch technologies. There are a total of eight engines in its traction part, which are operated by electronic computers, and can reflect the movement of the center of gravity of the car and the characteristics of the road at every moment through the transmitter on the body.
body center of gravity 在 一二三渡辺 Youtube 的精選貼文
AZ-1、ビート (BEAT) 、カプチーノ (Cappuccino) を持っている、友人、第三の車、
http://jp.youtube.com/watch?v=LBejiM7EZcA
http://jp.youtube.com/watch?v=-4RaerUxjgQ
http://jp.youtube.com/watch?v=1cLVUEDSTZs
オートザム・AZ-1(エーゼットワン)は、マツダ5チャンネル化によって誕生したオートザムから発売された2座席の軽スポーツクーペである。
AZ-1、ビート (BEAT) 、カプチーノ (Cappuccino) 、この三車種は同時期に発売された二人乗りの軽自動車であり、頭文字を合わせて平成ABCトリオと呼ばれる。
概要
1992年9月24日に発表され、同年10月5日に発売。スズキ製3気筒DOHCのF6Aターボエンジンをシート後部に(ミッドシップ)搭載し、「究極のハンドリングマシーン」と銘打たれた。パワートレインはアルト・ワークスと一部共通化している。外板に特殊プラスチックを使用し、ガルウイングドアを採用して、超小型のスーパーカーを演出していた。ボディは外装を簡単に取り外せるスケルトンモノコックという特殊なフレームを採用して剛性を高め、外装が無い状態でも走行可能。車重は720kg。
軽自動車唯一のガルウイング、外装にFRPを多用した軽量ボディやステアリングのロックトゥロックが2.2回転という機敏な操作性を持つ。足回りがアルトベースの物を使用していた為、ノーマル状態では重心の高さや軽自動車ゆえのトレッドの狭さから横転事故も発生し、極度のリア荷重なためフロントタイヤの接地圧が足りず、直進安定性の不備を指摘する評価もあった。「窓が殆ど開かない」「社外品カーコンポが殆ど搭載できない」、「体格的に乗り手を選ぶ」といった嗜好性の強い作りと、発売された時期がバブル崩壊の最中といった事もあり販売台数は低迷、1995年に生産を打ち切った。総生産台数は4,392台。生産終了された現在でも熱狂的なファンも多く、中古車市場では程度の良い車体にプレミア価格が付いている事もある。
開発当初、スペアタイヤはフロントに収納する予定であったが、衝突安全テストを行った際に車内に飛び込んでくることがわかり、急遽運転席後ろの荷物置きスペースへ変更することとなった。ガルウイングドアのため、万一横転した場合は脱出手段がなく、窓ガラスを粉砕するハンマーを備えたユーザーもいた。
AZ-1, beat (BEAT), cappuccino (Cappuccino) have friends, a third car,
http://jp.youtube.com/watch?v=LBejiM7EZcA
http://jp.youtube.com/watch?v=-4RaerUxjgQ
http://jp.youtube.com/watch?v=1cLVUEDSTZs
OTOZAMU AZ-1 (EZETTOWAN), the Mazda 5 was released from OTOZAMU was created by two channels of light seat sports coupe.
AZ-1, beat (BEAT), cappuccino (Cappuccino), three models of this two-seater mini-vehicle is released in the same period, March to the initial trio called ABC.
Overview
1992 was announced on September 24, released on October 5 that year. Suzuki made a F6A DOHC 3-cylinder turbocharged engine in the rear seat (MIDDOSHIPPU) features, "the ultimate HANDORINGUMASHIN"銘打TA. Powertrain are some common workspace and alto. Using a special plastic outer panel, and adopted the gull-wing door, he directed the ultra-small super car. Body rigidity is enhanced by employing a special frame for easy removal of outer SUKERUTONMONOKOKKU can run even when there is no exterior. The car weighs 720kg.
The only GARUUINGU minivehicles, FRP exterior ROKKUTOUROKKU a lightweight body and the steering-laden 2.2-operate with the rotation of the ball. To have used the Alto-based leg of a normal state in accidents caused by rolling of the tread because of the limited height of the center of gravity and light vehicle, a lack of front tire pressure to the extreme rear of load , there is also a lack of stability point straight ahead. "Most do not open the window," "Can not KAKONPO products with little outside", "choose a rider to the constitution" and the creation of a strong taste, such as sales and MOARI matter during the collapse of the bubble period of stagnation was released , ended production in 1995. Total production is 4,392 units. Many fans were still enthusiastic production ends in used-car market is even with the premium price of a good car.
Initial development, the spare tire is stored in the front were expected to understand that when you jump to the vehicle crash safety testing, it was changed to put luggage space behind the driver's seat急遽. For gull-wing door, if you roll with the means of emergency escape, some users with a hammer to shatter the windows.
body center of gravity 在 CarDebuts Youtube 的最佳貼文
ชมตัวจริงแบบชัดๆ All-New Nissan Sylphy / Sentra 2019-2020 นิสสัน ซิลฟี่ โฉมใหม่ล่าสุด เปิดตัวในจีน ก่อนเข้าไทย
ในคลิปก่อน เราพาไปชมการเปิดตัว All-new Nissan Sylphy โฉมใหม่ พร้อมรายละเอียดเบื้องต้น ในงาน Shanghai Auto Show 2019 แต่ในคลิปนี้ ทีมออกแบบของ Nissan ทั้ง Alfonso Albaisa และ Ken Lee จะพาไปชม Nissan Sylphy โฉมใหม่อย่างใกล้ชิด ทั้งภายนอกและภายใน รวมถึงการทดลองนั่ง ว่ารถซีดานขนาดเล็กรุ่นนี้ จะให้ความสะดวกสบายในการโดยสาร มากน้อยแค่ไหน
SHANGHAI – The all-new Nissan Sylphy was unveiled today at the 2019 Shanghai Motor Show, sporting a new look and featuring the latest Nissan Intelligent Mobility technologies to give drivers increased connectivity, comfort and confidence.
With a new and more fuel-efficient powertrain, a wider stance, a lower center of gravity, improved aerodynamics and a roomy, luxurious interior, the new Sylphy delivers even better performance and an enhanced driving experience. Seamless connectivity features and a full suite of active safety technologies provide support for drivers.
“The all-new Nissan Sylphy represents the full landing of Nissan Intelligent Mobility in China,” said Daniele Schillaci, executive vice president of Nissan Motor Co., Ltd. “With an even more stylish design and advanced connectivity and safety technologies, the all-new Nissan Sylphy gives customers a whole new level of confidence and excitement, befitting of a leading family sedan.”
At first glance, the all-new Sylphy is characterized by its stance, which reflects the design concepts of “vigor” and “confidence.” The lower profile and streamlined exterior contribute to decreased wind resistance, with a drag coefficient of just 0.26 – equal to that of the Nissan GT-R. Signature Nissan features include the black grille with a three-dimensional V-motion design, bringing about a strong visual impact. The sides are defined by lean, striking proportions that create a sense of motion even when the car is stationary.
These dynamic exterior design cues hint at a number of key performance upgrades. The car is powered by the all-new Nissan HR16DE Gen3 intelligent drive engine with Xtronic transmission. The new powertrain technologies boost engine stability and fuel efficiency1 and provide a linear, smooth driving experience. Steering, suspension and body rigidity have also been enhanced to improve handling and deliver a more solid driving feel.
The wide stance and long wheelbase allow for a spacious cabin where up to five people can ride comfortably in soft, 3D Multilayer ergonomic seats. The interior comes in sporty black, light gray or tan. The tan version features a diamond-cut quilting pattern on the seats that adds a modern, luxurious feel.
Interior features that have been designed for increased comfort and convenience also include the three-outlet air conditioning system. Controlled by a single integrated switch, it supplies air separately to the left and right front seats and to the back seats. An 8-inch center color display and the 7-inch, high-definition thin-film transistor monitor, which shows drive information and readings from the car’s sensors, are arranged inside the meter assembly for a smart, highly functional design.
Among the many Nissan Intelligent Mobility technologies in the all-new Sylphy are seamless smartphone connectivity and intelligent voice command. The Integrated Dynamic Control Module uses targeted brake applications after the vehicle encounters a bump or undulation to immediately improve the level of the body, enhancing ride quality. Additional technologies to assist the driver include Intelligent Trace Control, Intelligent Ride Control and Emergency Brake for Pedal Misapplication.
Safety technologies such as Intelligent Forward Collision Warning, Blind Spot Warning, Lane Departure Warning, Cross Traffic Alert and Intelligent Driving Alert support the driver in anticipating and avoiding hazardous situations.