Theresa H Nakagawa1, Ana F Dos Santos2, Giovanna C Lessi3, Rafael S Petersen4, Rodrigo Scattone Silva5. 1. Department of Physical Therapy, Centre University of North, Rua Joaquim Nabuco, 1323, Centro, Manaus, AM, CEP: 69010-060, Brazil; Fiocruz Brasília (Fundação Oswaldo Cruz - Brasília), Avenida L3 Norte, s/n, Campus Universitário Darcy Ribeiro, Gleba A Brasília, DF, CEP: 70904-130, Brazil. Electronic address: helissa8@gmail.com. 2. UNA University Centre - Campus Pouso Alegre, Rua João Basílio, 420, Centro Pouso Alegre, MG, CEP: 37550-000, Brazil. Electronic address: santosaf@live.com. 3. Tiradentes University Center - UNIT, Av. Gustavo Paiva, 5017, Cruz das Almas, Maceió, AL, CEP: 57038-000, Brazil. Electronic address: giclessi@gmail.com. 4. Fiocruz Brasília (Fundação Oswaldo Cruz - Brasília), Avenida L3 Norte, s/n, Campus Universitário Darcy Ribeiro, Gleba A Brasília, DF, CEP: 70904-130, Brazil. Electronic address: rspetersen.br@gmail.com. 5. Postgraduate Program in Rehabilitation Sciences, Faculty of Health Sciences of Trairi, Universidade Federal do Rio Grande do Norte, Rua Vila Trairi, S/N, Centro, Santa Cruz, RN, CEP: 59200-000, Brazil. Electronic address: r.scattone@outlook.com.
Abstract
OBJECTIVES: Investigate prospectively whether dynamic balance and frontal plane knee projection angle (FPKPA) are risk factors for the development of patellofemoral pain (PFP) in male military recruits. STUDY DESIGN: Prospective cohort. SETTING: Military training center. PARTICIPANTS: 135 male military recruits were followed prospectively for six weeks and the incidence of PFP was documented. MAIN OUTCOMES: Baseline measures of the Y-Balance test (YBT) and two-dimensional FPKPA during single-leg squatting were recorded. Mann-Whitney U tests and logistic regression analysis were utilized to identify possible variables associated with the development of PFP. RESULTS: A total of 14 male recruits developed PFP during the follow up period. The PFP group had significantly greater asymmetry on the YBT posterolateral direction (mean difference = 3.44 ± 0.57 cm; 95% Confidence Interval [CI] = 2.38-4.51 cm) and greater FPKPA during single-leg squat (mean difference = 5.55°±1.78°; [CI] = 1.81-9.28°) at baseline when compared to controls. Binary logistic regression models revealed that YBT posterolateral asymmetry ≥4.08 cm (Nagelkerke R2 = 0.304; X2 = 21.63; p < 0.001; OR = 5.46; [CI] = 4.47-8.06) and FPKPA ≥ 4.81° (Nagelkerke R2 = 0.249; X2 = 17.46; p < 0.001; OR = 4.65; [CI] = 3.32-9.06) were significantly associated with PFP. CONCLUSIONS: Male military recruits with greater asymmetry on the YBT posterolateral direction and FPKPA were at a greater risk of developing PFP.
OBJECTIVES: Investigate prospectively whether dynamic balance and frontal plane knee projection angle (FPKPA) are risk factors for the development of patellofemoral pain (PFP) in male military recruits. STUDY DESIGN: Prospective cohort. SETTING: Military training center. PARTICIPANTS: 135 male military recruits were followed prospectively for six weeks and the incidence of PFP was documented. MAIN OUTCOMES: Baseline measures of the Y-Balance test (YBT) and two-dimensional FPKPA during single-leg squatting were recorded. Mann-Whitney U tests and logistic regression analysis were utilized to identify possible variables associated with the development of PFP. RESULTS: A total of 14 male recruits developed PFP during the follow up period. The PFP group had significantly greater asymmetry on the YBT posterolateral direction (mean difference = 3.44 ± 0.57 cm; 95% Confidence Interval [CI] = 2.38-4.51 cm) and greater FPKPA during single-leg squat (mean difference = 5.55°±1.78°; [CI] = 1.81-9.28°) at baseline when compared to controls. Binary logistic regression models revealed that YBT posterolateral asymmetry ≥4.08 cm (Nagelkerke R2 = 0.304; X2 = 21.63; p < 0.001; OR = 5.46; [CI] = 4.47-8.06) and FPKPA ≥ 4.81° (Nagelkerke R2 = 0.249; X2 = 17.46; p < 0.001; OR = 4.65; [CI] = 3.32-9.06) were significantly associated with PFP. CONCLUSIONS: Male military recruits with greater asymmetry on the YBT posterolateral direction and FPKPA were at a greater risk of developing PFP.
Authors: Diego Martins; Marcelo Peduzzi de Castro; Caroline Ruschel; Carlos Alberto Atherinos Pierri; Heiliane de Brito Fontana; Gilmar Moraes Santos Journal: Int J Sports Phys Ther Date: 2022-02-01
Authors: Yanfei Guan; Shannon S D Bredin; Jack Taunton; Qinxian Jiang; Nana Wu; Darren E R Warburton Journal: J Clin Med Date: 2022-01-12 Impact factor: 4.241