Post-tensioned concrete is reinforced with a grid of high-strength sheathed steel tendons, or cables. While the concrete is curing, the cables are tensioned in both directions and held permanently under stress by anchoring them in a perimeter beam. This squeezing action keeps the concrete in compression, improving its tensile (or bending) strength. The more the concrete is squeezed together, the less likely it is that shrinkage cracks will develop or open. (See a more complete description of post-tensioning from the Post-Tensioning Institute.)
Outside Australasia, the single achieved modest commercial success. It peaked at number 78 on the Canadian Hot 100 and remained for five weeks on the chart.[61] The track earned platinum certification from Music Canada, which denotes shipments of 80,000 copies in the country.[62] The single had the similar position on the UK Singles Chart and was certified silver by the British Phonographic Industry for track-equivalent sales of 200,000 units, based on sales and streams.[63][64] It also entered the top 100 of the German Singles Chart, where it reached number 83.[65] Despite not entering the record chart of Norway, the song was certified platinum by IFPI Norway for exceeding sales of 10,000 units in the country.[66] In the US, "Tennis Court" debuted at number 71, which was also its highest placement, on the Billboard Hot 100 chart dated 19 October 2013.[67] The single spent 18 weeks on the chart and had sold 355,000 copies in the US by April 2014.[68][18] It also reached number nine on the Hot Rock Songs, a Billboard auxiliary chart.[69]
Generating effortless power on the tennis forehand is right up there on any tennis players wish list. The trouble is when most players think about generating more power they tighten up, their muscles get stiff and they try to muscle the ball. In this video Top Tennis Training coach Simon Konov will help you get more power on your forehand with one simple trick.
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All sessions vary depending on the level of the player, the type of training program and the duration of the session. I divide them into 4 parts (order may vary as well): 1) power and control on the court: I design a plan so that the player focuses on developing his/her power and strength to be in control of his game from the moment he/she steps on the court. 2) drills 3) serves: I focus a lot on serve because it is very important for the player to build confidence on his/her serve. 4) sets: Depending on the level of the player, I like to arrange sets so they are used to pay attention to every point, and work on their conc ... View Profile
It’s also important to consider the size and shape of the racquet head. Oversized and mid-plus sized heads have larger sweet spots, making it easier to hit the ball with power, while smaller head sizes allow for greater control. Tear-drop shaped heads also provide a larger sweet spot, while traditional oval heads are valued for their feel and control.
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The ITF's Play and Stay campaign promotes playing on smaller courts with slower red, orange and green balls for younger children. This gives children more time and control so they can serve, rally, and score from the first lesson on courts that are sized to fit their bodies. The ITF has mandated that official competition for children under 10 years of age should be played on "Orange" courts 18 m (59 ft) long by 6.4 m (21 ft) wide. Competition for children under 8 years is played on "Red" courts that are 11 m (36 ft) long and 5.5 m (18 ft) wide. The net is always 0.8 m high in the center.[4]
I was born in Colombia but lived all my life in Venezuela. I got a tennis scholarship at Oklahoma, where I got my bachelor degree in Psychology. I worked as head pro at Club Nautico De Maracaibo in Venezuela for 23 years where I made lots of friends and made a lots of great players! 8 players I have taught played tennis for colleges here in the USA. I am a real friendly person and very serious about tennis. Sincerely yours, Jose
"The biggest drawback of asphalt courts is not that they crack, for even a post-tensioned slab may crack from shrinkage or even develop minor structural cracking, but that the cracks continue to widen year after year," says Kolkmann. "I have seen asphalt courts with cracks as wide as 2 to 3 inches, making them a hazard to the players. The advantage with a post-tensioned slab is that it will not allow the crack to widen, but will keep it compressed to a very thin line."
Regardless of the number of games and sets in a match, players must continuously rotate sides when the total number of games in a set is an odd number. For instance, if the total game score in a set is 3-2, simply add 3 + 2 = 5. Since 5 is an odd number, the players rotate sides prior to starting the next game. If the total game score in a set is 5-1, simply add 5 + 1 = 6. Since 6 is an even number, the players do not rotate sides.

"Tennis Court" received generally positive reviews from contemporary critics. Siân Rowe from NME complimented Lorde's "strong pop vocals".[31] Emily Yoshida from Grantland labelled it a "murkily winsome, ever-so-slightly chopped ballad",[48] while Kyle Jaeger writing for The Hollywood Reporter commended the track's lyrical content and its "catchy" melody.[49] Billboard's Jason Lipshutz was favourable towards the song's "detached attitude" and minimalist production that evoked "something intoxicating" in the music scene.[29] Sharing the same sentiment, Adam Offitzer from independent music blog Pretty Much Amazing regarded "Tennis Court" as a "[burst] of originality" in the mainstream music scene of "mindless hooks and dubstep anthems" for its minimalism and "clever" lyrics.[23]

I focus on the student ability to improve skills in the court by having constant repetitions of drills. I also make the lesson more attractive for the students by playing with them and make them experience real game practice.  I structure my lessons with short warm up continued by certain amount of drills and finally different games applied to different situations of the game. 
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