메뉴 건너뛰기




Volumn 17, Issue 4, 2007, Pages 234-241

Effectiveness of static quadriceps stretching in individuals with patellofemoral joint pain

Author keywords

Ely's test; Flexibility; Kendall test; Rehabilitation; Thomas test

Indexed keywords

ADULT; ARTICLE; CONTROLLED STUDY; CORRELATION COEFFICIENT; FEMALE; HUMAN; JOINT INJURY; KNEE FUNCTION; KNEE PAIN; MAJOR CLINICAL STUDY; MALE; MUSCLE STRETCHING; MUSCULOSKELETAL SYSTEM EXAMINATION; NONPARAMETRIC TEST; PAIN ASSESSMENT; PARAMETRIC TEST; PATELLOFEMORAL PAIN SYNDROME; PRIORITY JOURNAL; QUADRICEPS FEMORIS MUSCLE; STATIC MUSCLE STRETCHING; TREATMENT DURATION; TREATMENT OUTCOME;

EID: 34447298873     PISSN: 1050642X     EISSN: None     Source Type: Journal    
DOI: 10.1097/JSM.0b013e3180f60afc     Document Type: Article
Times cited : (23)

References (61)
  • 1
    • 0019963701 scopus 로고
    • Flexibility training: Ballistic, static, or proprioceptive neuromuscular facilitation?
    • Sady SP, Wortman M, Blanke D. Flexibility training: Ballistic, static, or proprioceptive neuromuscular facilitation? Arch Phys Med Rehabil. 1982;63:261-263.
    • (1982) Arch Phys Med Rehabil , vol.63 , pp. 261-263
    • Sady, S.P.1    Wortman, M.2    Blanke, D.3
  • 2
    • 20044374860 scopus 로고    scopus 로고
    • The effects of hamstring stretching on range of motion: A systematic literature review
    • Decoster LC, Cleland J, Altieri C, et al. The effects of hamstring stretching on range of motion: A systematic literature review. J Orthop Sports Phys Ther. 2005;35:377-387.
    • (2005) J Orthop Sports Phys Ther , vol.35 , pp. 377-387
    • Decoster, L.C.1    Cleland, J.2    Altieri, C.3
  • 3
    • 26644459986 scopus 로고    scopus 로고
    • Stretching before and after exercise: Effect on muscle soreness and injury risk
    • Anderson JC. Stretching before and after exercise: Effect on muscle soreness and injury risk. J Athletic Train. 2005;40:218-220.
    • (2005) J Athletic Train , vol.40 , pp. 218-220
    • Anderson, J.C.1
  • 5
    • 0034981381 scopus 로고    scopus 로고
    • A systematic review of physical interventions for patellofemoral pain syndrome
    • Crossley KM, Bennell KL, Green S, et al. A systematic review of physical interventions for patellofemoral pain syndrome. Clin J Sport Med. 2001;11:103-110.
    • (2001) Clin J Sport Med , vol.11 , pp. 103-110
    • Crossley, K.M.1    Bennell, K.L.2    Green, S.3
  • 6
    • 0034779385 scopus 로고    scopus 로고
    • Evidence-based clinical practice guidelines on selected rehabilitation interventions: Overview and methodology
    • Philadelphia Panel
    • Philadelphia Panel. Evidence-based clinical practice guidelines on selected rehabilitation interventions: overview and methodology. Phys Ther. 2001;81:1629-1640.
    • (2001) Phys Ther , vol.81 , pp. 1629-1640
  • 7
    • 1542346872 scopus 로고    scopus 로고
    • The impact of stretching on sports injury risk: A systematic review of the literature
    • Thacker SB, Gilchrist J, Stroup DF, et al. The impact of stretching on sports injury risk: A systematic review of the literature. Med Sci Sports Exerc. 2004;36:371-378.
    • (2004) Med Sci Sports Exerc , vol.36 , pp. 371-378
    • Thacker, S.B.1    Gilchrist, J.2    Stroup, D.F.3
  • 8
    • 4744366228 scopus 로고    scopus 로고
    • Does stretching improve performance? A systematic and critical review of the literature
    • Shrier I. Does stretching improve performance? A systematic and critical review of the literature. Clin J Sport Med. 2004;14:267-273.
    • (2004) Clin J Sport Med , vol.14 , pp. 267-273
    • Shrier, I.1
  • 9
    • 16244375224 scopus 로고    scopus 로고
    • Commentary - Effect of stretching on sports injury risk: A review
    • Hart L. Commentary - Effect of stretching on sports injury risk: A review. Clin J Sport Med. 2005;15:113.
    • (2005) Clin J Sport Med , vol.15 , pp. 113
    • Hart, L.1
  • 10
    • 0033783167 scopus 로고    scopus 로고
    • Stretching before exercise: An evidence based approach
    • Shrier I. Stretching before exercise: An evidence based approach. Br J Sports Med. 2000;34:324-325.
    • (2000) Br J Sports Med , vol.34 , pp. 324-325
    • Shrier, I.1
  • 11
    • 0037206307 scopus 로고    scopus 로고
    • Effects of stretching before and after exercising on muscle soreness and risk of injury: Systematic review
    • Herbert RD, Gabriel M. Effects of stretching before and after exercising on muscle soreness and risk of injury: Systematic review. BMJ. 2002;325:468.
    • (2002) BMJ , vol.325 , pp. 468
    • Herbert, R.D.1    Gabriel, M.2
  • 12
    • 0027954449 scopus 로고
    • The warm-up procedure: To stretch or not to stretch. A brief review
    • Smith CA. The warm-up procedure: To stretch or not to stretch. A brief review. J Orthop Sports Phys Ther. 1994;19:12-17.
    • (1994) J Orthop Sports Phys Ther , vol.19 , pp. 12-17
    • Smith, C.A.1
  • 13
    • 0034918907 scopus 로고    scopus 로고
    • Myogenic satellite cells: Physiology to molecular biology
    • Hawke TJ, Garry DJ. Myogenic satellite cells: Physiology to molecular biology. J Appl Physiol. 2001;91:534-551.
    • (2001) J Appl Physiol , vol.91 , pp. 534-551
    • Hawke, T.J.1    Garry, D.J.2
  • 14
    • 0024435835 scopus 로고
    • Satellite cell and growth factor involvement in skeletal muscle growth
    • White TP, Esser KA. Satellite cell and growth factor involvement in skeletal muscle growth. Med Sci Sports Exerc. 1989;21:S158-S163.
    • (1989) Med Sci Sports Exerc , vol.21
    • White, T.P.1    Esser, K.A.2
  • 15
    • 0024421420 scopus 로고
    • Satellite cell behavior during skeletal muscle growth and regeneration
    • Schultz E. Satellite cell behavior during skeletal muscle growth and regeneration. Med Sci Sports Exerc. 1989;21:S181-S186.
    • (1989) Med Sci Sports Exerc , vol.21
    • Schultz, E.1
  • 16
    • 34447337176 scopus 로고    scopus 로고
    • Types and varieties of stretching
    • Windsor, Ontario: Human Kinetics Publishers;
    • Alter MJ. Types and varieties of stretching. Science of Flexibility. Windsor, Ontario: Human Kinetics Publishers; 1996:173-196.
    • (1996) Science of Flexibility , pp. 173-196
    • Alter, M.J.1
  • 17
    • 0021847423 scopus 로고
    • Improvement of muscle flexibility. A comparison between two techniques
    • Wallin D, Ekblom B, Grahn R, et al. Improvement of muscle flexibility. A comparison between two techniques. Am J Sports Med. 1985;13:263-268.
    • (1985) Am J Sports Med , vol.13 , pp. 263-268
    • Wallin, D.1    Ekblom, B.2    Grahn, R.3
  • 18
    • 0032044538 scopus 로고    scopus 로고
    • Passive properties of human skeletal muscle during stretch maneuvers. A review
    • Magnusson SP. Passive properties of human skeletal muscle during stretch maneuvers. A review. Scand J Med Sci Sports. 1998;8:65-77.
    • (1998) Scand J Med Sci Sports , vol.8 , pp. 65-77
    • Magnusson, S.P.1
  • 19
    • 0032809062 scopus 로고    scopus 로고
    • Effect of stretching duration on active and passive range of motion in the lower extremity
    • Roberts JM, Wilson K. Effect of stretching duration on active and passive range of motion in the lower extremity. Br J Sports Med. 1999;33:259-263.
    • (1999) Br J Sports Med , vol.33 , pp. 259-263
    • Roberts, J.M.1    Wilson, K.2
  • 20
    • 15744383727 scopus 로고    scopus 로고
    • The effectiveness of 3 stretching techniques on hamstring flexibility using consistent stretching parameters
    • Davis DS, Ashby PE, McCale KL, et al. The effectiveness of 3 stretching techniques on hamstring flexibility using consistent stretching parameters. J Strength Condition Res. 2005;19:27-32.
    • (2005) J Strength Condition Res , vol.19 , pp. 27-32
    • Davis, D.S.1    Ashby, P.E.2    McCale, K.L.3
  • 21
    • 0035001904 scopus 로고    scopus 로고
    • The effect of duration of stretching of the hamstring muscle group for increasing range of motion in people aged 65 years or older
    • Feland JB, Myrer JW, Schulthies SS, et al. The effect of duration of stretching of the hamstring muscle group for increasing range of motion in people aged 65 years or older. Phys Ther. 2001;81:1110-1117.
    • (2001) Phys Ther , vol.81 , pp. 1110-1117
    • Feland, J.B.1    Myrer, J.W.2    Schulthies, S.S.3
  • 22
    • 0037865667 scopus 로고    scopus 로고
    • A comparison of two stretching protocols on hip range of motion: Implications for total daily stretch duration
    • Cipriani D, Abel B, Pirrwitz D. A comparison of two stretching protocols on hip range of motion: implications for total daily stretch duration. J Strength Cond Res. 2003;17:274-278.
    • (2003) J Strength Cond Res , vol.17 , pp. 274-278
    • Cipriani, D.1    Abel, B.2    Pirrwitz, D.3
  • 23
    • 0028018128 scopus 로고
    • The effect of time on static stretch on the flexibility of hamstring muscles
    • Bandy WD, Irion JM. The effect of time on static stretch on the flexibility of hamstring muscles. J Orthop Sports Phys Ther. 1994;74:845-850.
    • (1994) J Orthop Sports Phys Ther , vol.74 , pp. 845-850
    • Bandy, W.D.1    Irion, J.M.2
  • 24
    • 0030883286 scopus 로고    scopus 로고
    • The effect of time and frequency of static stretching on flexibility of the hamstring muscles
    • Bandy WD, Irion JM, Briggler M. The effect of time and frequency of static stretching on flexibility of the hamstring muscles. Phys Ther. 1997;77:1090-1096.
    • (1997) Phys Ther , vol.77 , pp. 1090-1096
    • Bandy, W.D.1    Irion, J.M.2    Briggler, M.3
  • 25
    • 0024461618 scopus 로고
    • Passive tension of the ankle before and after stretching
    • Toft E, Espersen GT, Kalund S, et al. Passive tension of the ankle before and after stretching. Am J Sports Med. 1989;17:489-494.
    • (1989) Am J Sports Med , vol.17 , pp. 489-494
    • Toft, E.1    Espersen, G.T.2    Kalund, S.3
  • 26
    • 0025340132 scopus 로고
    • Viscoelastic properties of muscle-tendon units. The biomechanical effects of stretching
    • Taylor DC, Dalton JD Jr, Seaber AV, et al. Viscoelastic properties of muscle-tendon units. The biomechanical effects of stretching. Am J Sports Med. 1990;18:300-309.
    • (1990) Am J Sports Med , vol.18 , pp. 300-309
    • Taylor, D.C.1    Dalton Jr, J.D.2    Seaber, A.V.3
  • 27
    • 0842347705 scopus 로고    scopus 로고
    • Effect of static stretch training on neural and mechanical properties of the human plantar-flexor muscles
    • Guissard N, Duchateau J. Effect of static stretch training on neural and mechanical properties of the human plantar-flexor muscles. Muscle Nerve. 2004;29:248-255.
    • (2004) Muscle Nerve , vol.29 , pp. 248-255
    • Guissard, N.1    Duchateau, J.2
  • 28
    • 0021637563 scopus 로고
    • The effects of static stretching exercises and stationary cycling on range of motion at the hip joint
    • Hubley CL, Kozey JW, Standish WD. The effects of static stretching exercises and stationary cycling on range of motion at the hip joint. J Orthop Sports Phys Ther. 1984;6:104-109.
    • (1984) J Orthop Sports Phys Ther , vol.6 , pp. 104-109
    • Hubley, C.L.1    Kozey, J.W.2    Standish, W.D.3
  • 29
    • 0031942372 scopus 로고    scopus 로고
    • The effect of static stretch and dynamic range of motion training on the flexibility of hamstring muscles
    • Bandy WD, Irion JM, Briggler M. The effect of static stretch and dynamic range of motion training on the flexibility of hamstring muscles. J Orthop Sports Phys Ther. 1998;27:295-300.
    • (1998) J Orthop Sports Phys Ther , vol.27 , pp. 295-300
    • Bandy, W.D.1    Irion, J.M.2    Briggler, M.3
  • 30
    • 0141517214 scopus 로고    scopus 로고
    • Impact of prior exercise on hamstring flexibility: A comparison of proprioceptive neuromuscular facilitation and static stretching
    • Funk DC, Swank AM, Mikla BM, et al. Impact of prior exercise on hamstring flexibility: A comparison of proprioceptive neuromuscular facilitation and static stretching. J Strength Cond Res. 2003;17:489-492.
    • (2003) J Strength Cond Res , vol.17 , pp. 489-492
    • Funk, D.C.1    Swank, A.M.2    Mikla, B.M.3
  • 31
    • 0029790001 scopus 로고    scopus 로고
    • Biomechanical responses to repeated stretches in human hamstring muscle in vivo
    • Magnusson SP, Simonsen EB, Aagaard P, et al. Biomechanical responses to repeated stretches in human hamstring muscle in vivo. Am J Sports Med. 1996;24:622-628.
    • (1996) Am J Sports Med , vol.24 , pp. 622-628
    • Magnusson, S.P.1    Simonsen, E.B.2    Aagaard, P.3
  • 32
    • 0022382697 scopus 로고
    • Effects of intense "stretching"-flexibility training on the mechanical profile of the knee extensors and on the range of motion of the hip joint
    • Hortobagyi T, Faludi J, Tihanyi J, et al. Effects of intense "stretching"-flexibility training on the mechanical profile of the knee extensors and on the range of motion of the hip joint. Int J Sports Med. 1985;6:317-321.
    • (1985) Int J Sports Med , vol.6 , pp. 317-321
    • Hortobagyi, T.1    Faludi, J.2    Tihanyi, J.3
  • 33
    • 0035315822 scopus 로고    scopus 로고
    • Flexibility and passive resistance of the hamstrings of young adults using two different static stretching protocols
    • Chan SP, Hong Y, Robinson PD. Flexibility and passive resistance of the hamstrings of young adults using two different static stretching protocols. Scand J Med Sci Sports. 2001;11:81-86.
    • (2001) Scand J Med Sci Sports , vol.11 , pp. 81-86
    • Chan, S.P.1    Hong, Y.2    Robinson, P.D.3
  • 34
    • 0033969842 scopus 로고    scopus 로고
    • A randomized trial of preexercise stretching for prevention of lower-limb injury
    • Pope RP, Herbert RD, Kirwan JD, et al. A randomized trial of preexercise stretching for prevention of lower-limb injury. Med Sci Sports Exerc. 2000;32:271-277.
    • (2000) Med Sci Sports Exerc , vol.32 , pp. 271-277
    • Pope, R.P.1    Herbert, R.D.2    Kirwan, J.D.3
  • 35
    • 0035433574 scopus 로고    scopus 로고
    • Effect of warm-up and flexibility treatments on vertical jump performance
    • Church JB, Wiggins MS, Moode FM, et al. Effect of warm-up and flexibility treatments on vertical jump performance. J Strength Cond Res. 2001;15:332-336.
    • (2001) J Strength Cond Res , vol.15 , pp. 332-336
    • Church, J.B.1    Wiggins, M.S.2    Moode, F.M.3
  • 36
    • 15744365496 scopus 로고    scopus 로고
    • The acute effects of static and ballistic stretching on vertical jump performance in trained woman
    • Unick J, Scott Kieffer H, Chessman W, et al. The acute effects of static and ballistic stretching on vertical jump performance in trained woman. J Strength Condition Res. 2005;19:206-212.
    • (2005) J Strength Condition Res , vol.19 , pp. 206-212
    • Unick, J.1    Scott Kieffer, H.2    Chessman, W.3
  • 39
    • 0029128951 scopus 로고
    • Onset timing of electromyographic activity in the vastus medialis oblique and vastus lateralis muscles in subjects with and without patellofemoral pain syndrome
    • Krast GM, Willett GM. Onset timing of electromyographic activity in the vastus medialis oblique and vastus lateralis muscles in subjects with and without patellofemoral pain syndrome. Phys Ther. 1995;75:813-823.
    • (1995) Phys Ther , vol.75 , pp. 813-823
    • Krast, G.M.1    Willett, G.M.2
  • 40
    • 0017090736 scopus 로고
    • Patello-femoral joint mechanics and pathology. 2. Chondromalacia patellae
    • Goodfellow J, Hungerford DS, Woods C. Patello-femoral joint mechanics and pathology. 2. Chondromalacia patellae. J Bone Joint Surg Br. 1976;58:291-299.
    • (1976) J Bone Joint Surg Br , vol.58 , pp. 291-299
    • Goodfellow, J.1    Hungerford, D.S.2    Woods, C.3
  • 41
    • 0026693454 scopus 로고
    • Conservative management of patellofemoral dysfunction
    • Shelton GL. Conservative management of patellofemoral dysfunction. Prim Care. 1992;19:331-350.
    • (1992) Prim Care , vol.19 , pp. 331-350
    • Shelton, G.L.1
  • 42
    • 0032759029 scopus 로고    scopus 로고
    • Patellofemoral pain syndrome: A review of current issues
    • Thomee R, Augustsson J, Karlsson J. Patellofemoral pain syndrome: a review of current issues. Sports Med. 1999;28:245-262.
    • (1999) Sports Med , vol.28 , pp. 245-262
    • Thomee, R.1    Augustsson, J.2    Karlsson, J.3
  • 43
    • 0019427262 scopus 로고
    • Patellofemoral pain syndromes: A comprehensive and conservative approach
    • Malek MM, Mangine RE. Patellofemoral pain syndromes: A comprehensive and conservative approach. J Orthop Sports Phys Ther. 1981;2:108-116.
    • (1981) J Orthop Sports Phys Ther , vol.2 , pp. 108-116
    • Malek, M.M.1    Mangine, R.E.2
  • 44
    • 0026098244 scopus 로고
    • Flexibility and anterior knee pain in adolescent elite figure skaters
    • Smith AD, Stroud L, McQueen C. Flexibility and anterior knee pain in adolescent elite figure skaters. J Pediatr Orthop. 1991;11:77-82.
    • (1991) J Pediatr Orthop , vol.11 , pp. 77-82
    • Smith, A.D.1    Stroud, L.2    McQueen, C.3
  • 45
    • 0033852576 scopus 로고    scopus 로고
    • Intrinsic risk factors for the development of anterior knee pain in an athletic population. A two-year prospective study
    • Witvrouw E, Lysens R, Bellemans J, et al. Intrinsic risk factors for the development of anterior knee pain in an athletic population. A two-year prospective study. Am J Sports Med. 2000;28:480-489.
    • (2000) Am J Sports Med , vol.28 , pp. 480-489
    • Witvrouw, E.1    Lysens, R.2    Bellemans, J.3
  • 46
    • 0029354108 scopus 로고
    • Patellofemoral pain syndrome in young women. I. A clinical analysis of alignment, pain parameters, common symptoms and functional activity level
    • Thomee R, Renstrom P, Karlsson J, et al. Patellofemoral pain syndrome in young women. I. A clinical analysis of alignment, pain parameters, common symptoms and functional activity level. Scand J Med Sci Sports. 1995;5:237-244.
    • (1995) Scand J Med Sci Sports , vol.5 , pp. 237-244
    • Thomee, R.1    Renstrom, P.2    Karlsson, J.3
  • 47
    • 0024470573 scopus 로고
    • Rehabilitation of patellofemoral dysfunction in the athlete
    • Beckman M, Craig R, Lehman RC. Rehabilitation of patellofemoral dysfunction in the athlete. Clin Sports Med. 1989;8:841-860.
    • (1989) Clin Sports Med , vol.8 , pp. 841-860
    • Beckman, M.1    Craig, R.2    Lehman, R.C.3
  • 50
    • 0036656935 scopus 로고    scopus 로고
    • The physical therapist's approach to patellofemoral disorders
    • McConnell J. The physical therapist's approach to patellofemoral disorders. Clin Sports Med. 2002;21:363-387.
    • (2002) Clin Sports Med , vol.21 , pp. 363-387
    • McConnell, J.1
  • 51
    • 0020417197 scopus 로고
    • A short questionnaire for the measurement of habitual physical activity in epidemiological studies
    • Baecke JAH, Burema J, Frijters JER. A short questionnaire for the measurement of habitual physical activity in epidemiological studies. Am J Clin Nutri. 1982;36:936-942.
    • (1982) Am J Clin Nutri , vol.36 , pp. 936-942
    • Baecke, J.A.H.1    Burema, J.2    Frijters, J.E.R.3
  • 52
    • 0024514052 scopus 로고
    • Validation of outcome measures in patients with patellofemoral syndrome
    • Chesworth BM, Culham E, Elizabeth G, et al. Validation of outcome measures in patients with patellofemoral syndrome. J Orthop Sports Phys Ther. 1989:302-308.
    • (1989) J Orthop Sports Phys Ther , pp. 302-308
    • Chesworth, B.M.1    Culham, E.2    Elizabeth, G.3
  • 53
    • 0031929686 scopus 로고    scopus 로고
    • Comparison of five isometric exercises in the recruitment of the vastus medialis oblique in persons with and without patellofemoral pain syndrome
    • Laprade J, Culham E, Brouwer B. Comparison of five isometric exercises in the recruitment of the vastus medialis oblique in persons with and without patellofemoral pain syndrome. J Orthop Sports Phys Ther. 1998;27:197-204.
    • (1998) J Orthop Sports Phys Ther , vol.27 , pp. 197-204
    • Laprade, J.1    Culham, E.2    Brouwer, B.3
  • 54
    • 2942691812 scopus 로고    scopus 로고
    • Analysis of outcome measures for persons with patellofemoral pain: Which are reliable and valid?
    • Crossley KM, Bennell KL, Cowan SM, et al. Analysis of outcome measures for persons with patellofemoral pain: Which are reliable and valid? Arch Phys Med Rehabil. 2004;85:815-822.
    • (2004) Arch Phys Med Rehabil , vol.85 , pp. 815-822
    • Crossley, K.M.1    Bennell, K.L.2    Cowan, S.M.3
  • 55
    • 0036842013 scopus 로고    scopus 로고
    • A self-administered pain severity scale for patellofemoral pain syndrome
    • Laprade J, Culham E. A self-administered pain severity scale for patellofemoral pain syndrome. Clin Rehab. 2002;16:780-788.
    • (2002) Clin Rehab , vol.16 , pp. 780-788
    • Laprade, J.1    Culham, E.2
  • 56
    • 33846523647 scopus 로고    scopus 로고
    • Reliability of the Thomas test for assessing range of motion about the hip
    • Peeler J, Anderson J. Reliability of the Thomas test for assessing range of motion about the hip. Phys Therapy Sport. 2007;8:14-21.
    • (2007) Phys Therapy Sport , vol.8 , pp. 14-21
    • Peeler, J.1    Anderson, J.2
  • 57
    • 0029848482 scopus 로고    scopus 로고
    • Reflex response times of vastus medialis oblique and vastus lateralis in normal subjects and in subjects with patellofemoral pain syndrome
    • Witvrouw E, Sneyers C, Lysens R, et al. Reflex response times of vastus medialis oblique and vastus lateralis in normal subjects and in subjects with patellofemoral pain syndrome. J Orthop Sports Phys Ther. 1996;24:160-165.
    • (1996) J Orthop Sports Phys Ther , vol.24 , pp. 160-165
    • Witvrouw, E.1    Sneyers, C.2    Lysens, R.3
  • 60
    • 3042653389 scopus 로고    scopus 로고
    • Reliability of common lower extremity musculoskeletal screening tests
    • Gabbe BJ, Bennell KL, Wajswelner H, et al. Reliability of common lower extremity musculoskeletal screening tests. Phys Therapy Sport. 2004;5:90-97.
    • (2004) Phys Therapy Sport , vol.5 , pp. 90-97
    • Gabbe, B.J.1    Bennell, K.L.2    Wajswelner, H.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.