{"id":78971,"date":"2024-09-05T07:05:12","date_gmt":"2024-09-05T07:05:12","guid":{"rendered":"https:\/\/beststringer.com\/tennis-racquet-performance-analysis-guide\/"},"modified":"2026-05-29T02:27:54","modified_gmt":"2026-05-29T02:27:54","slug":"tennis-racquet-performance-analysis-guide","status":"publish","type":"post","link":"https:\/\/beststringer.com\/vi\/tennis-racquet-performance-analysis-guide\/","title":{"rendered":"Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t v\u1ee3t tennis"},"content":{"rendered":"
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\"Ph\u00e2n<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.1 Thi\u1ebft k\u1ebf v\u1ee3t tennis<\/strong><\/h5>\n\n\n\n

Gi\u1edbi thi\u1ec7u v\u1ec1 Ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t<\/mark> V\u1ee3t tennis<\/mark><\/strong><\/h2>\n\n\n\n

Vi\u1ec7c ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t v\u1ee3t tennis b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c hi\u1ec3u c\u00e1ch c\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft k\u1ebf ch\u00ednh \u0111\u1ecbnh h\u00ecnh l\u1ed1i ch\u01a1i th\u1ef1c t\u1ebf. Tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u00e2n b\u1eb1ng, k\u00edch c\u1ee1 m\u1eb7t v\u1ee3t v\u00e0 c\u1ea5u tr\u00fac t\u1ed5ng th\u1ec3 c\u1ee7a khung \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1ch v\u1ee3t di chuy\u1ec3n, \u0111\u1ed9 th\u00e2n thi\u1ec7n v\u00e0 m\u1ee9c \u0111\u1ed9 d\u1ec5 d\u00e0ng \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i t\u1ea1o ra s\u1ee9c m\u1ea1nh c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t.

Ng\u01b0\u1eddi ch\u01a1i th\u01b0\u1eddng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c nh\u1eefng s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y m\u00e0 kh\u00f4ng ho\u00e0n to\u00e0n hi\u1ec3u l\u00fd do t\u1ea1i sao. H\u01b0\u1edbng d\u1eabn gi\u00e1o d\u1ee5c mang t\u00ednh th\u1ef1c ti\u1ec5n n\u00e0y gi\u1ea3i th\u00edch nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1ee3t tennis, gi\u00fap ng\u01b0\u1eddi ch\u01a1i, th\u1ee3 m\u1edbi v\u00e0o ngh\u1ec1 v\u00e0 c\u00e1c Th\u1ee3 \u0111an v\u1ee3t \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn qu\u1ed1c t\u1ebf \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh thi\u1ebft b\u1ecb th\u00f4ng minh thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o c\u00e1c nh\u00e3n m\u00e1c ti\u1ebfp th\u1ecb.

Cho d\u00f9 b\u1ea1n \u0111ang kh\u00e1m ph\u00e1 ki\u1ebfn th\u1ee9c v\u1ec1 trang thi\u1ebft b\u1ecb, t\u00ecm ki\u1ebfm ch\u1ee9ng ch\u1ec9 \u0111an v\u1ee3t, hay b\u1ea1n l\u00e0 m\u1ed9t th\u1ee3 \u0111an v\u1ee3t c\u1ea7u l\u00f4ng \u0111ang t\u00f2 m\u00f2 v\u1ec1 s\u1ef1 kh\u00e1c bi\u1ec7t trong thi\u1ebft k\u1ebf v\u1ee3t gi\u1eefa hai m\u00f4n th\u1ec3 thao, vi\u1ec7c n\u1eafm v\u1eefng c\u00e1c kh\u00e1i ni\u1ec7m n\u1ec1n t\u1ea3ng n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e2n t\u00edch v\u1ee3t m\u1ed9t c\u00e1ch chuy\u00ean s\u00e2u.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Hu\u1ea5n<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.2 S\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a v\u1ee3t<\/strong><\/h5>\n\n\n\n

S\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a V\u1ee3t<\/mark> Tennis<\/mark><\/strong><\/h2>\n\n\n\n

S\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a v\u1ee3t tennis cho th\u1ea5y m\u1ed9t qu\u00e1 tr\u00ecnh t\u00ecm ki\u1ebfm kh\u00f4ng ng\u1eebng ngh\u1ec9 nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 k\u1ebft h\u1ee3p l\u00fd t\u01b0\u1edfng gi\u1eefa s\u1ee9c m\u1ea1nh, kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t v\u00e0 t\u00ednh linh ho\u1ea1t. Trong l\u1ecbch s\u1eed, nh\u1eefng khung v\u1ee3t \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng g\u1ed7 n\u1eb7ng v\u1edbi k\u00edch th\u01b0\u1edbc m\u1eb7t v\u1ee3t nh\u1ecf, l\u00e0m h\u1ea1n ch\u1ebf s\u1ee9c m\u1ea1nh v\u00e0 thu h\u1eb9p \u0111i\u1ec3m ng\u1ecdt (sweet spot). C\u00e1c v\u1eadt li\u1ec7u graphite hi\u1ec7n \u0111\u1ea1i cho ph\u00e9p c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u1eed nghi\u1ec7m c\u00e1c k\u00edch c\u1ee1 m\u1eb7t v\u1ee3t l\u1edbn h\u01a1n c\u00f9ng tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh nh\u1eb9 h\u01a1n \u0111\u00e1ng k\u1ec3 m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n c\u1ea5u tr\u00fac.

Hi\u1ec3u \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a n\u00e0y gi\u00fap l\u00e0m r\u00f5 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t trong thi\u1ebft k\u1ebf gi\u1eefa c\u00e1c m\u00f4n th\u1ec3 thao. V\u00ec b\u00f3ng tennis n\u1eb7ng h\u01a1n nhi\u1ec1u so v\u1edbi qu\u1ea3 c\u1ea7u l\u00f4ng, v\u1ee3t tennis th\u01b0\u1eddng n\u1eb7ng h\u01a1n v\u1ee3t c\u1ea7u l\u00f4ng \u0111\u1ec3 cung c\u1ea5p \u0111\u1ee7 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh khi va ch\u1ea1m. M\u1ed9t c\u00e2y v\u1ee3t tennis \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ec3 h\u1ea5p th\u1ee5 l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u1edbn.

B\u1eb1ng c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh s\u1ef1 ph\u00e2n b\u1ed5 tr\u1ecdng l\u01b0\u1ee3ng, c\u00e1c k\u1ef9 s\u01b0 \u0111\u00e3 t\u1ea1o ra nh\u1eefng c\u00e2y v\u1ee3t chuy\u00ean bi\u1ec7t. Khung v\u1ee3t tennis l\u1edbn cho ph\u00e9p c\u00e1c th\u1eed nghi\u1ec7m thi\u1ebft k\u1ebf \u0111\u1ed9c \u0111\u00e1o, d\u1eabn \u0111\u1ebfn c\u00e1c m\u1eabu v\u1ee3t n\u1eb7ng \u0111\u1ea7u v\u00e0 nh\u1eb9 \u0111\u1ea7u ri\u00eang bi\u1ec7t, ph\u1ee5c v\u1ee5 cho c\u00e1c c\u01a1 ch\u1ebf k\u1ef9 thu\u1eadt \u0111\u00e1nh ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Ng\u01b0\u1eddi<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.3 C\u00e1c ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t ch\u00ednh<\/strong><\/h5>\n\n\n\n

C\u00e1c ch\u1ec9 s\u1ed1 Hi\u1ec7u su\u1ea5t<\/mark> ch\u00ednh c\u1ee7a V\u1ee3t tennis<\/mark><\/strong><\/h2>\n\n\n\n

M\u1ed9t trong nh\u1eefng ch\u1ec9 s\u1ed1 hi\u1ec7u su\u1ea5t ch\u00ednh c\u1ee7a v\u1ee3t tennis l\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ea5u tr\u00fac khi va ch\u1ea1m. V\u1ee3t tennis s\u1eed d\u1ee5ng c\u1ed5 v\u1ee3t h\u00ecnh ch\u1eef Y ch\u1eafc ch\u1eafn v\u00e0 khu v\u1ef1c th\u00e2n \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 v\u1eb7n xo\u1eafn khi \u0111\u00e1nh nh\u1eefng qu\u1ea3 b\u00f3ng n\u1eb7ng ch\u1ec7ch t\u00e2m. Logic thi\u1ebft k\u1ebf n\u00e0y kh\u00e1c bi\u1ec7t so v\u1edbi c\u1ea7u l\u00f4ng, n\u01a1i th\u00e2n v\u1ee3t d\u00e0i v\u00e0 m\u1ea3nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a \u0111\u1ed9 u\u1ed1n cong v\u00e0 s\u1ee9c b\u1eadt nh\u01b0 roi.

Kh\u1ea3 n\u0103ng t\u1ea1o l\u1ef1c c\u0169ng kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 gi\u1eefa c\u00e1c m\u00f4n th\u1ec3 thao. C\u00fa \u0111\u00e1nh tennis ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o c\u01a1 ch\u1ebf xoay to\u00e0n th\u00e2n v\u00e0 duy tr\u00ec c\u1ed5 tay v\u1eefng ch\u1eafc trong v\u00f9ng ti\u1ebfp x\u00fac, trong khi c\u1ea7u l\u00f4ng s\u1eed d\u1ee5ng s\u1ef1 xoay g\u1eadp c\u1eb3ng tay nhanh (pronation). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t v\u1ee3t tennis \u0111i s\u00e2u v\u00e0o vi\u1ec7c kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 c\u1ee9ng h\u1ed7 tr\u1ee3 m\u1ed9t \u0111\u01b0\u1eddng vung v\u1ee3t d\u00e0i v\u00e0 n\u1eb7ng nh\u01b0 th\u1ebf n\u00e0o.

S\u1ef1 so s\u00e1nh ch\u00e9o gi\u1eefa c\u00e1c m\u00f4n th\u1ec3 thao mang t\u00ednh gi\u00e1o d\u1ee5c r\u1ea5t cao: kh\u00f4ng c\u00f3 thi\u1ebft k\u1ebf n\u00e0o l\u00e0 ‘t\u1ed1t h\u01a1n’, ch\u00fang ch\u1ec9 \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c nguy\u00ean l\u00fd v\u1eadt l\u00fd kh\u00e1c nhau. M\u1ed9t Th\u1ee3 \u0111an v\u1ee3t \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn qu\u1ed1c t\u1ebf s\u1ebd ph\u00e2n t\u00edch m\u1ed9t khung v\u1ee3t tennis b\u1eb1ng c\u00e1ch xem x\u00e9t swingweight, twistweight v\u00e0 ch\u1ec9 s\u1ed1 \u0111\u1ed9 c\u1ee9ng (RA) c\u1ee7a n\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ti\u1ec1m n\u0103ng s\u1ee9c m\u1ea1nh th\u1ef1c s\u1ef1.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Th\u1ee3<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.4 Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0110\u1ed9 c\u00e2n b\u1eb1ng<\/strong><\/h5>\n\n\n\n

Tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0110\u1ed9 c\u00e2n b\u1eb1ng:<\/mark> N\u1ec1n t\u1ea3ng c\u1ee7a Hi\u1ec7u su\u1ea5t<\/mark><\/strong><\/h2>\n\n\n\n

Tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh v\u00e0 \u0111i\u1ec3m c\u00e2n b\u1eb1ng l\u00e0 n\u1ec1n t\u1ea3ng c\u1ed1t l\u00f5i c\u1ee7a thi\u1ebft k\u1ebf v\u1ee3t tennis, quy\u1ebft \u0111\u1ecbnh c\u1ea3 t\u00ednh linh ho\u1ea1t l\u1eabn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh:<\/p>\n\n\n\n

Tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh vs \u0110\u1ed9 c\u00e2n b\u1eb1ng.<\/strong> Tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh l\u00e0 s\u1ee9c n\u1eb7ng c\u1ee7a v\u1ee3t khi c\u1ea7m tr\u00ean tay (th\u01b0\u1eddng t\u1eeb 260g \u0111\u1ebfn h\u01a1n 340g \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi l\u1edbn). \u0110\u1ed9 c\u00e2n b\u1eb1ng l\u00e0 s\u1ef1 ph\u00e2n b\u1ed5 tr\u1ecdng l\u01b0\u1ee3ng \u0111\u00f3. M\u1ed9t c\u00e2y v\u1ee3t 300g nh\u1eb9 \u0111\u1ea7u mang l\u1ea1i c\u1ea3m gi\u00e1c vung ho\u00e0n to\u00e0n kh\u00e1c bi\u1ec7t so v\u1edbi m\u1ed9t c\u00e2y v\u1ee3t 300g n\u1eb7ng \u0111\u1ea7u.<\/p>\n\n\n\n

N\u1eb7ng \u0111\u1ea7u vs Nh\u1eb9 \u0111\u1ea7u.<\/strong> S\u1ef1 c\u00e2n b\u1eb1ng n\u1eb7ng \u0111\u1ea7u (head-heavy) l\u00e0m t\u0103ng swingweight v\u00e0 c\u1ea3m gi\u00e1c m\u1ea1nh m\u1ebd, th\u00fac \u0111\u1ea9y \u0111\u1ea7u v\u1ee3t \u0111i xuy\u00ean qua b\u00f3ng, nh\u01b0ng c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm kh\u1ea3 n\u0103ng x\u1eed l\u00fd tr\u00ean l\u01b0\u1edbi. S\u1ef1 c\u00e2n b\u1eb1ng nh\u1eb9 \u0111\u1ea7u (head-light) c\u1ea3i thi\u1ec7n t\u00ednh c\u01a1 \u0111\u1ed9ng v\u00e0 x\u1eed l\u00fd tr\u00ean l\u01b0\u1edbi, nh\u01b0ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng \u0111\u00e1nh s\u00e2u d\u1ec5 d\u00e0ng \u1edf m\u1ed9t s\u1ed1 ng\u01b0\u1eddi ch\u01a1i.<\/p>\n\n\n\n

Logic t\u00f9y ch\u1ec9nh.<\/strong> Vi\u1ec7c th\u00eam tr\u1ecdng l\u01b0\u1ee3ng v\u00e0o c\u00e1n v\u1ee3t l\u00e0m t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh \u0111\u1ed3ng th\u1eddi khi\u1ebfn khung v\u1ee3t nh\u1eb9 \u0111\u1ea7u h\u01a1n. Th\u00eam tr\u1ecdng l\u01b0\u1ee3ng \u1edf v\u1ecb tr\u00ed 3 gi\u1edd v\u00e0 9 gi\u1edd tr\u00ean m\u1eb7t v\u1ee3t c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh ch\u1ed1ng xo\u1eafn v\u00e0 m\u1edf r\u1ed9ng \u0111i\u1ec3m ng\u1ecdt (sweet spot) sang hai b\u00ean. M\u1ed9t th\u1ee3 \u0111an v\u1ee3t chuy\u00ean nghi\u1ec7p s\u1ebd s\u1eed d\u1ee5ng ki\u1ebfn th\u1ee9c n\u00e0y \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh v\u1ee3t kh\u1edbp ho\u00e0n h\u1ea3o v\u1edbi c\u01a1 ch\u1ebf \u0111\u00e1nh c\u1ee7a ng\u01b0\u1eddi ch\u01a1i.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Th\u1ee3<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.5 K\u00edch c\u1ee1 m\u1eb7t v\u1ee3t<\/strong><\/h5>\n\n\n\n

K\u00edch c\u1ee1 m\u1eb7t v\u1ee3t: T\u00ecm ki\u1ebfm<\/mark> \u0110i\u1ec3m ng\u1ecdt (Sweet Spot)<\/mark><\/strong><\/h2>\n\n\n\n

M\u1eb7t v\u1ee3t nh\u1ecf (85-93 sq in).<\/strong> Nh\u1eefng k\u00edch th\u01b0\u1edbc m\u1eb7t nh\u1ecf h\u01a1n th\u01b0\u1eddng \u0111\u00f2i h\u1ecfi s\u1ef1 ti\u1ebfp x\u00fac g\u1ecdn g\u00e0ng v\u00e0 mang l\u1ea1i \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ef1c cao. Tuy nhi\u00ean, ch\u00fang s\u1ebd \u00edt th\u00e2n thi\u1ec7n h\u01a1n khi \u0111\u00e1nh l\u1ec7ch t\u00e2m, n\u00ean r\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng tay v\u1ee3t n\u00e2ng cao c\u00f3 k\u1ef9 thu\u1eadt \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

M\u1eb7t v\u1ee3t trung b\u00ecnh (95-100 sq in).<\/strong> Kho\u1ea3ng k\u00edch th\u01b0\u1edbc \u0111a n\u0103ng n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c gi\u1ea3i \u0111\u1ea5u chuy\u00ean nghi\u1ec7p c\u0169ng nh\u01b0 \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ch\u01a1i gi\u1ea3i tr\u00ed. M\u1eb7t v\u1ee3t 100 sq in mang \u0111\u1ebfn s\u1ef1 c\u00e2n b\u1eb1ng tuy\u1ec7t v\u1eddi gi\u1eefa s\u1ee9c m\u1ea1nh, \u0111\u1ed9 n\u1edbi l\u1ecfng c\u1ee7a \u0111i\u1ec3m ng\u1ecdt v\u00e0 c\u1ea3m gi\u00e1c ki\u1ec3m so\u00e1t, \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ee9c ti\u00eau chu\u1ea9n trong thi\u1ebft k\u1ebf d\u1ee5ng c\u1ee5 tennis hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

M\u1eb7t v\u1ee3t l\u1edbn v\u00e0 qu\u00e1 kh\u1ed5 (104+ sq in).<\/strong> \u0110\u1ea7u v\u1ee3t l\u1edbn h\u01a1n th\u01b0\u1eddng d\u1ec5 \u0111\u00e1nh h\u01a1n, t\u1ea1o s\u1ee9c m\u1ea1nh d\u1ec5 d\u00e0ng v\u00e0 gi\u1ea3m \u0111\u1ed9 xo\u1eafn khi \u0111\u00e1nh l\u1ec7ch t\u00e2m. M\u1eb7c d\u00f9 c\u00e1c khung v\u1ee3t ngo\u1ea1i c\u1ee1 (oversize) mang l\u1ea1i s\u1ef1 tho\u1ea3i m\u00e1i, nh\u01b0ng v\u1edbi nh\u1eefng tay v\u1ee3t chuy\u00ean s\u00e2u, ch\u00fang c\u00f3 th\u1ec3 \u0111em l\u1ea1i c\u1ea3m gi\u00e1c thi\u1ebfu ch\u00ednh x\u00e1c ho\u1eb7c \u0111\u1ed9 n\u1ea3y qu\u00e1 m\u1ee9c nh\u01b0 l\u00f2 xo.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Ng\u01b0\u1eddi<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.6 C\u00f4ng ngh\u1ec7 thi\u1ebft k\u1ebf<\/strong><\/h5>\n\n\n\n

Hi\u1ec3u v\u1ec1 Logic thi\u1ebft k\u1ebf<\/mark> N\u1eb7ng \u0111\u1ea7u<\/mark><\/strong><\/h2>\n\n\n\n

C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t t\u1eeb l\u00e2u \u0111\u00e3 th\u1eed nghi\u1ec7m nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n b\u1ed5 tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ec3 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t v\u1ee3t tennis. M\u1ed9t v\u00ed d\u1ee5 ti\u00eau bi\u1ec3u mang t\u00ednh gi\u00e1o d\u1ee5c l\u00e0 s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a C\u00f4ng ngh\u1ec7 Hammer t\u1eeb Wilson v\u00e0o nh\u1eefng n\u0103m 1990.<\/p>\n\n\n\n

V\u1ea5n \u0111\u1ec1 thi\u1ebft k\u1ebf.<\/strong> Khi v\u1ee3t tr\u1edf n\u00ean nh\u1eb9 h\u01a1n \u0111\u1ec3 gi\u00fap thao t\u00e1c d\u1ec5 d\u00e0ng, ch\u00fang b\u1ecb m\u1ea5t \u0111i kh\u1ed1i l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00e0y s\u00e2u (plow-through) xuy\u00ean qua m\u1ed9t qu\u1ea3 b\u00f3ng tennis n\u1eb7ng, g\u00e2y ra s\u1ef1 thi\u1ebfu \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

Gi\u1ea3i ph\u00e1p c\u00e2n b\u1eb1ng.<\/strong> M\u1ee5c \u0111\u00edch c\u1ee7a c\u00f4ng ngh\u1ec7 c\u00e2n b\u1eb1ng \u0111\u1ecbnh h\u01b0\u1edbng s\u1ee9c m\u1ea1nh n\u00e0y l\u00e0 \u0111\u1ea9y ph\u1ea7n l\u1edbn kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a khung v\u1ec1 ph\u00eda \u0111\u1ea7u v\u1ee3t, trong khi v\u1eabn gi\u1eef tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh t\u1ed5ng th\u1ec3 \u1edf m\u1ee9c c\u1ef1c k\u1ef3 th\u1ea5p.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 th\u1ef1c t\u1ebf.<\/strong> Logic thi\u1ebft k\u1ebf n\u1eb7ng \u0111\u1ea7u (head-heavy) n\u00e0y gi\u00fap t\u0103ng swingweight v\u00e0 ti\u1ec1m n\u0103ng t\u1ea1o l\u1ef1c m\u00e0 kh\u00f4ng khi\u1ebfn ng\u01b0\u1eddi c\u1ea7m v\u1ee3t b\u1ecb m\u1ecfi m\u1ec7t. \u0110i\u1ec1u \u0111\u00f3 ch\u1ee9ng minh r\u1eb1ng vi\u1ec7c thay \u0111\u1ed5i \u0111i\u1ec3m c\u00e2n b\u1eb1ng s\u1ebd l\u00e0m bi\u1ebfn \u0111\u1ed5i ho\u00e0n to\u00e0n c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a v\u1ee3t, m\u1ed9t kh\u00e1i ni\u1ec7m then ch\u1ed1t \u0111\u01b0\u1ee3c gi\u1ea3ng d\u1ea1y trong b\u1ea5t k\u1ef3 kh\u00f3a h\u1ecdc \u0111an c\u01b0\u1edbc v\u1ee3t nghi\u00eam t\u00fac n\u00e0o.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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\"Th\u1ee3<\/figure>\n<\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n\n
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1.7 \u0110\u00e0o t\u1ea1o chuy\u00ean nghi\u1ec7p<\/strong><\/h5>\n\n\n\n

Gi\u00e1 tr\u1ecb c\u1ee7a Ch\u1ee9ng nh\u1eadn th\u1ee3 \u0111an v\u1ee3t<\/mark> trong Ph\u00e2n t\u00edch d\u1ee5ng c\u1ee5<\/mark><\/strong><\/h2>\n\n\n\n

Ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 thi\u1ebft b\u1ecb l\u00e0 ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a b\u1ea5t k\u1ef3 kh\u00f3a h\u1ecdc \u0111an c\u01b0\u1edbc v\u1ee3t uy t\u00edn n\u00e0o. M\u1ed9t Th\u1ee3 \u0111an v\u1ee3t \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn qu\u1ed1c t\u1ebf hi\u1ec3u r\u1eb1ng vi\u1ec7c \u0111\u1ec1 xu\u1ea5t thay \u0111\u1ed5i s\u1ed1 pound (lbs) s\u1ebd v\u00f4 ngh\u0129a n\u1ebfu tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u00e2n b\u1eb1ng ho\u1eb7c k\u00edch c\u1ee1 m\u1eb7t v\u1ee3t v\u1ed1n d\u0129 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u01a1 ch\u1ebf \u0111\u00e1nh c\u1ee7a ng\u01b0\u1eddi ch\u01a1i.<\/p>\n\n\n\n

T\u1ea1i Best Stringer Worldwide, ch\u00fang t\u00f4i tin r\u1eb1ng ch\u1ee9ng ch\u1ec9 \u0111an v\u1ee3t b\u1eaft bu\u1ed9c ph\u1ea3i bao g\u1ed3m k\u1ef9 n\u0103ng ph\u00e2n t\u00edch hi\u1ec7u su\u1ea5t v\u1ee3t tennis s\u00e2u r\u1ed9ng. S\u1ef1 tinh t\u00fay kh\u00f4ng ch\u1ec9 n\u1eb1m \u1edf vi\u1ec7c \u0111an c\u01b0\u1edbc, m\u00e0 c\u00f2n \u1edf t\u01b0 duy tham v\u1ea5n ch\u00ednh x\u00e1c m\u00e0 m\u1ed9t th\u1ee3 \u0111an v\u1ee3t chuy\u00ean nghi\u1ec7p s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n khung v\u1ee3t.<\/p>\n\n\n\n

D\u00f9 b\u1ea1n l\u00e0 m\u1ed9t th\u1ee3 \u0111an v\u1ee3t m\u1edbi v\u00e0o ngh\u1ec1, m\u1ed9t ng\u01b0\u1eddi ch\u01a1i tennis mu\u1ed1n t\u1ed1i \u01b0u h\u00f3a trang b\u1ecb, hay m\u1ed9t k\u1ef9 thu\u1eadt vi\u00ean c\u1ea7u l\u00f4ng n\u00e2ng cao \u0111ang h\u1ecdc h\u1ecfi v\u1ec1 s\u1ef1 kh\u00e1c bi\u1ec7t trong thi\u1ebft k\u1ebf \u0111a m\u00f4n th\u1ec3 thao, vi\u1ec7c hi\u1ec3u v\u1ec1 v\u1ee3t nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng ho\u00e0n ch\u1ec9nh s\u1ebd n\u00e2ng t\u1ea7m ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 c\u1ee7a b\u1ea1n v\u00e0 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng l\u1ef1a ch\u1ecdn d\u1ee5ng c\u1ee5 an to\u00e0n, hi\u1ec7u qu\u1ea3.<\/p>\n\n<\/div><\/div><\/div>\n<\/div>\n\n

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FAQ t\u00f3m t\u1eaft<\/mark> v\u1ec1 thi\u1ebft k\u1ebf v\u1ee3t tennis<\/h2>\n\n\n\n

C\u00e1c c\u00e2u tr\u1ea3 l\u1eddi nhanh ch\u00f3ng v\u00e0 tr\u1ef1c ti\u1ebfp cho nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 thi\u1ebft k\u1ebf, tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 c\u00e2n b\u1eb1ng c\u1ee7a v\u1ee3t tennis.<\/p>\n\n\n

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V\u1ee3t tennis n\u1eb7ng \u0111\u1ea7u<\/mark> c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n

M\u1ed9t c\u00e2y v\u1ee3t tennis n\u1eb7ng \u0111\u1ea7u (head-heavy) c\u00f3 ph\u1ea7n l\u1edbn kh\u1ed1i l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 v\u1ec1 ph\u00eda v\u00f2ng khung m\u1eb7t v\u1ee3t. Thi\u1ebft k\u1ebf n\u00e0y l\u00e0m t\u0103ng swingweight, cho ph\u00e9p khung v\u1ee3t t\u1ea1o ra nhi\u1ec1u xung l\u01b0\u1ee3ng v\u00e0 s\u1ee9c m\u1ea1nh c\u00e0y s\u00e2u (plow-through) h\u01a1n khi ti\u1ebfp x\u00fac b\u00f3ng, m\u1eb7c d\u00f9 n\u00f3 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng linh ho\u1ea1t t\u1ed5ng th\u1ec3.<\/p>\n\n<\/div><\/div>\n\n

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S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh v\u00e0 \u0111\u1ed9 c\u00e2n b\u1eb1ng<\/mark> l\u00e0 g\u00ec?<\/h3>\n\n\n\n

Tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh l\u00e0 c\u00e2n n\u1eb7ng th\u1ef1c t\u1ebf c\u1ee7a v\u1ee3t khi \u0111\u1eb7t y\u00ean. \u0110\u1ed9 c\u00e2n b\u1eb1ng m\u00f4 t\u1ea3 n\u01a1i tr\u1ecdng l\u01b0\u1ee3ng \u0111\u00f3 \u0111\u01b0\u1ee3c t\u1eadp trung. Hai c\u00e2y v\u1ee3t c\u00f3 th\u1ec3 c\u00f3 c\u00f9ng tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh nh\u01b0ng mang l\u1ea1i c\u1ea3m gi\u00e1c ho\u00e0n to\u00e0n kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o vi\u1ec7c kh\u1ed1i l\u01b0\u1ee3ng n\u1eb1m \u1edf c\u00e1n hay \u1edf ph\u1ea7n \u0111\u1ea7u.<\/p>\n\n<\/div><\/div>\n\n

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Lo\u1ea1i k\u00edch c\u1ee1 m\u1eb7t v\u1ee3t<\/mark> tennis n\u00e0o \u0111a d\u1ee5ng nh\u1ea5t?<\/h3>\n\n\n\n

C\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u1ea7u trung b\u00ecnh, th\u01b0\u1eddng t\u1eeb 98 \u0111\u1ebfn 100 inch vu\u00f4ng, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 \u0111a n\u0103ng nh\u1ea5t. Ch\u00fang mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng ho\u00e0n h\u1ea3o gi\u1eefa \u0111\u1ed9 n\u1edbi l\u1ecfng c\u1ee7a \u0111i\u1ec3m ng\u1ecdt (sweet spot), kh\u1ea3 n\u0103ng t\u1ea1o l\u1ef1c v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c, gi\u00fap ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi nhi\u1ec1u c\u1ea5p \u0111\u1ed9 ng\u01b0\u1eddi ch\u01a1i.<\/p>\n\n<\/div><\/div>\n\n

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T\u1ea1i sao m\u1eb7t v\u1ee3t nh\u1ecf th\u01b0\u1eddng mang l\u1ea1i c\u1ea3m gi\u00e1c ch\u00ednh x\u00e1c h\u01a1n<\/mark>?<\/h3>\n\n\n\n

C\u00e1c k\u00edch c\u1ee1 m\u1eb7t nh\u1ecf h\u01a1n c\u00f3 d\u00e2y d\u1ecdc v\u00e0 d\u00e2y ngang ng\u1eafn h\u01a1n, l\u00e0m gi\u1ea3m \u0111\u1ed9 v\u00f5ng c\u1ee7a d\u00e2y khi va ch\u1ea1m. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t ph\u1ea3n h\u1ed3i tr\u00ean m\u1eb7t l\u01b0\u1edbi d\u00e2y c\u1ee9ng v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ed1t h\u01a1n m\u00e0 c\u00e1c v\u1eadn \u0111\u1ed9ng vi\u00ean tinh hoa r\u1ea5t \u01b0a chu\u1ed9ng \u0111\u1ec3 t\u1ea1o \u0111\u1ed9 ch\u00ednh x\u00e1c t\u1ed1i \u0111a, d\u00f9 n\u00f3 tr\u1eebng ph\u1ea1t n\u1eb7ng n\u1ec1 nh\u1eefng c\u00fa \u0111\u00e1nh tr\u01b0\u1ee3t t\u00e2m.<\/p>\n\n<\/div><\/div>\n\n

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Vi\u1ec7c gia th\u00eam tr\u1ecdng l\u01b0\u1ee3ng \u1edf g\u00f3c 3 v\u00e0 9 gi\u1edd<\/mark> thay \u0111\u1ed5i c\u1ea3m gi\u00e1c nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n

Vi\u1ec7c \u0111\u1eb7t b\u0103ng ch\u00ec ho\u1eb7c tungsten t\u1ea1i v\u1ecb tr\u00ed 3 v\u00e0 9 gi\u1edd tr\u00ean v\u00e0nh khung gi\u00fap t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh ch\u1ed1ng xo\u1eafn. N\u00f3 ng\u0103n v\u1ee3t b\u1ecb l\u1ec7ch khi \u0111\u00e1nh b\u00f3ng ngo\u00e0i t\u00e2m v\u00e0 m\u1edf r\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111i\u1ec3m ng\u1ecdt sang hai b\u00ean \u0111\u1ec3 mang l\u1ea1i c\u1ea3m gi\u00e1c \u0111\u1ea7m ch\u1eafc h\u01a1n.<\/p>\n\n<\/div><\/div>\n\n

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T\u1ea1i sao \u0111\u1ea7u v\u1ee3t l\u1edbn l\u1ea1i cung c\u1ea5p \u0111\u1ed9 th\u00e2n thi\u1ec7n (forgiveness) cao h\u01a1n<\/mark>?<\/h3>\n\n\n\n

C\u00e1c lo\u1ea1i m\u1eb7t v\u1ee3t l\u1edbn v\u00e0 qu\u00e1 kh\u1ed5 (tr\u00ean 104 sq in) c\u00f3 di\u1ec7n t\u00edch m\u1eb7t l\u01b0\u1edbi d\u00e2y r\u1ed9ng v\u00e0 d\u00e0i h\u01a1n, t\u1ea1o ra hi\u1ec7u \u1ee9ng trampoline (nh\u00fan \u0111\u00e0n h\u1ed3i) l\u1edbn h\u01a1n. \u0110i\u1ec1u n\u00e0y t\u1ef1 nhi\u00ean l\u00e0m \u0111i\u1ec3m ng\u1ecdt (sweet spot) m\u1edf r\u1ed9ng, mang l\u1ea1i \u0111\u1ed9 s\u00e2u b\u00f3ng v\u00e0 s\u1ef1 tho\u1ea3i m\u00e1i ngay c\u1ea3 khi b\u00f3ng kh\u00f4ng tr\u00fang ho\u00e0n to\u00e0n v\u1ecb tr\u00ed trung t\u00e2m.<\/p>\n\n<\/div><\/div>\n\n

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T\u1ea1i sao m\u1ed9t Th\u1ee3 \u0111an v\u1ee3t \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn qu\u1ed1c t\u1ebf<\/mark> c\u1ea7n ph\u1ea3i am hi\u1ec3u thi\u1ebft k\u1ebf v\u1ee3t?<\/h3>\n\n\n\n

M\u1ed9t th\u1ee3 \u0111an v\u1ee3t chuy\u00ean nghi\u1ec7p kh\u00f4ng th\u1ec3 ch\u1ec9 \u0111\u01a1n thu\u1ea7n d\u00f9ng d\u00e2y \u0111\u1ec3 s\u1eeda ch\u1eefa m\u1ed9t c\u00e2y v\u1ee3t c\u00f3 th\u00f4ng s\u1ed1 kh\u00f4ng ph\u00f9 h\u1ee3p ngay t\u1eeb \u0111\u1ea7u. Hi\u1ec3u r\u00f5 v\u1ec1 tr\u1ecdng l\u01b0\u1ee3ng, \u0111\u1ed9 c\u00e2n b\u1eb1ng v\u00e0 logic thi\u1ebft k\u1ebf m\u1eb7t v\u1ee3t gi\u00fap th\u1ee3 \u0111an v\u1ee3t cung c\u1ea5p s\u1ef1 t\u01b0 v\u1ea5n trung th\u1ef1c v\u00e0 \u0111\u01b0a ra c\u00e1c \u0111\u1ec1 xu\u1ea5t tinh ch\u1ec9nh an to\u00e0n.<\/p>\n\n<\/div><\/div>\n\n

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Thi\u1ebft k\u1ebf v\u1ee3t tennis<\/mark> kh\u00e1c bi\u1ec7t th\u1ebf n\u00e0o so v\u1edbi c\u1ea7u l\u00f4ng?<\/h3>\n\n\n\n

V\u00ec b\u00f3ng tennis n\u1eb7ng h\u01a1n qu\u1ea3 c\u1ea7u l\u00f4ng, v\u1ee3t tennis y\u00eau c\u1ea7u tr\u1ecdng l\u01b0\u1ee3ng t\u0129nh l\u1edbn h\u01a1n, khung d\u00e0y h\u01a1n v\u00e0 c\u1ed5 h\u00ecnh ch\u1eef Y \u0111\u1ec3 gi\u1eef \u0111\u1ed9 c\u1ee9ng ch\u1ed1ng xo\u1eafn. Thi\u1ebft k\u1ebf tennis \u01b0u ti\u00ean h\u1ea5p th\u1ee5 l\u1ef1c va ch\u1ea1m, trong khi c\u1ea7u l\u00f4ng \u01b0u ti\u00ean \u0111\u1ed9 u\u1ed1n c\u1ee7a th\u00e2n v\u1ee3t v\u00e0 t\u1ed1c \u0111\u1ed9 vung nhanh.<\/p>\n\n<\/div><\/div>\n\n

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M\u1ed9t kh\u00f3a h\u1ecdc \u0111an c\u01b0\u1edbc v\u1ee3t<\/mark> c\u1ea7n truy\u1ec1n \u0111\u1ea1t nh\u1eefng g\u00ec v\u1ec1 khung v\u1ee3t?<\/h3>\n\n\n\n

M\u1ed9t kh\u00f3a h\u1ecdc \u0111an c\u01b0\u1edbc v\u1ee3t hi\u1ec7n \u0111\u1ea1i b\u1eaft bu\u1ed9c ph\u1ea3i gi\u1ea3ng d\u1ea1y v\u1ec1 ph\u00e2n t\u00edch s\u1ef1 kh\u00e1c bi\u1ec7t thi\u1ebft b\u1ecb gi\u1eefa c\u00e1c m\u00f4n th\u1ec3 thao, ph\u01b0\u01a1ng ph\u00e1p t\u00f9y ch\u1ec9nh tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec3m c\u00e2n b\u1eb1ng, c\u00f9ng c\u00e1ch m\u1eb7t v\u1ee3t thay \u0111\u1ed5i \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u1eb7t l\u01b0\u1edbi d\u00e2y. Nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y s\u1ebd chuy\u1ec3n h\u00f3a m\u1ed9t th\u1ee3 v\u1eadn h\u00e0nh m\u00e1y \u0111an v\u1ee3t th\u00e0nh m\u1ed9t chuy\u00ean gia k\u1ef9 thu\u1eadt th\u1ef1c th\u1ee5.<\/p>\n\n<\/div><\/div>\n<\/div>\n\n

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V\u1eadt l\u00fd hi\u1ec7u su\u1ea5t: L\u00fd do v\u00ec sao Swingweight l\u1ea1i Quan tr\u1ecdng<\/mark><\/h2>\n\n\n\n\n
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