Peak Vertical Jump Power as a Marker of Bone Health in Children

Abstract

The objective of this investigation was to evaluate the accuracy of peak vertical jump power (VJP) to identify children with bone mineral density (BMD) below average, defined as BMD measured by DXA and adjusted for body height at the whole body less head≤− 1.0 standard deviation (SD). The sample included 114 boys and girls aged 8.5±0.4 years old. VJP was estimated from a countermovement jump performed on a contact mat using the measured flight time to calculate the height of rise of the center of gravity. Logistic regression analysis revealed that the odds ratio of having BMD≤1.0 SD decreased 1.2% per watt of power and the probability of BMD below average was 75.6% higher in boys than in girls with the same peak power jump. Receiver operating characteristic analysis showed that the best trade-off between sensitivity and specificity to identify children with BMD<− 1.0 SD was 635 watts in boys (sensitivity=63.3%; specificity=69.2%; AUC=0.816, 95% CI: 0.681–0.95; p<0.001) and 515 watts in girls (sensitivity=75.0%; specificity=77.0%; AUC=0.849, 95% CI: 0.698–0.999; p=0.002). These cut-off values correspond to a vertical jump of 19.9 cm and 20.5 cm in 8-year-old boys and girls, respectively. The VJP showed a reasonable sensitivity and specificity as well good discriminant ability to identify children with BMD below average.

Key words

children - bone health - BMD - vertical jump power - physical fitness

• References

• 1 Amonette WE, Brown LE, De Witt JK, Dupler TL, Tran TT, Tufano JJ, Spiering BA. Peak vertical jump power estimations in youths and young adults. J Strength Cond Res 2012; 26: 1749-1755
• 2 Baptista F, Barrigas C, Vieira F, Santa-Clara H, Homens PM, Fragoso I, Teixeira PJ, Sardinha LB. The role of lean body mass and physical activity in bone health in children. J Bone Miner Metab 2012; 30: 100-108
• 3 Clark EM, Ness AR, Bishop NJ, Tobias JH. Association between bone mass and fractures in children: a prospective cohort study. J Bone Miner Res 2006; 21: 1489-1495
• 4 Cooper C, Dennison EM, Leufkens HG, Bishop N, van Staa TP. Epidemiology of childhood fractures in Britain: a study using the general practice research database. J Bone Miner Res 2004; 19: 1976-1981
• 5 Council of Europe – Committee for the Development of Sport . Eurofit. Handbook for the Eurofit Tests of Physical Fitness. Rome: Council of Europe; 1988: 41-55
• 6 Crabtree NJ, Arabi A, Bachrach LK, Fewtrell M, El-Hajj Fuleihan G, Kecskemethy HH, Jaworski M, Gordon CM. Dual-energy X-ray absorptiometry interpretation and reporting in children and adolescents: the revised 2013 ISCD Pediatric Official Positions. J Clin Densitom 2014; 17: 225-242
• 7 De Souza MJ, Nattiv A, Joy E, Misra M, Williams NI, Mallinson RJ, Gibbs JC, Olmsted M, Goolsby M, Matheson G. Female Athlete Triad Coalition; American College of Sports Medicine; American Medical Society for Sports Medicine; American Bone Health Alliance . 2014 Female Athlete Triad Coalition consensus statement on treatment and return to play of the female athlete triad. Clin J Sport Med 2014; 24: 96-119
• 8 Duncan MJ, Hankey J, Nevill AM. Peak-power estimation equations in 12- to 16-year-old children: comparing linear with allometric models. Pediatr Exerc Sci 2013; 25: 385-393
• 9 Fonseca RM, Franca NM, Van Praagh E. Relationship between indicators of fitness and bone density in adolescent Brazilian children. Pediatr Exerc Sci 2008; 20: 40-49
• 10 Fricke O, Beccard R, Semler O, Schoenau E. Analyses of muscular mass and function: the impact on bone mineral density and peak muscle mass. Pediatr Nephrol 2010; 25: 2393-2400
• 11 Frost HM. A 2003 update of bone physiology and Wolff's Law for clinicians. Angle Orthod 2004; 74: 3-15
• 12 Fuchs RK, Bauer JJ, Snow CM. Jumping improves hip and lumbar spine bone mass in prepubescent children: a randomized controlled trial. J Bone Miner Res 2001; 16: 148-156
• 13 Gruodyté R, Jürimäe J, Saar M, Maasalu M, Jürimäe T. Relationships between areal bone mineral density and jumping height in pubertal girls with different physical activity patterns. J Sports Med Phys Fitness 2009; 49: 474-479
• 14 Gunter K, Baxter-Jones AD, Mirwald RL, Almstedt H, Fuchs RK, Durski S, Snow C. Impact exercise increases BMC during growth: an 8-year longitudinal study. J Bone Miner Res 2008; 23: 986-993
• 15 Hardcastle SA, Gregson CL, Rittweger J, Crabtree N, Ward K, Tobias JH. Jump power and force have distinct associations with cortical bone parameters: findings from a population enriched by individuals with high bone mass. J Clin Endocrinol Metab 2014; 99: 266-275
• 16 Harriss DJ, Atkinson G. Ethical standards in sports and exercise science research: 2016 update. Int J Sports Med 2015; 36: 1121-1124
• 17 Janz KF, Letuchy EM, Burns TL, Francis SL, Levy SM. Muscle power predicts adolescent bone strength: Iowa Bone Development Study. Med Sci Sports Exerc 2015; 47: 2201-2206
• 18 Ju YI, Sone T, Ohnaru K, Tanaka K, Yamaguchi H, Fukunaga M. Effects of different types of jump impact on trabecular bone mass and microarchitecture in growing rats. PLoS One 2014; 9: e107953
• 19 Kalkwarf HJ, Gilsanz V, Lappe JM, Oberfield S, Shepherd JA, Hangartner TN, Huang X, Frederick MM, Winer KK, Zemel BS. Tracking of bone mass and density during childhood and adolescence. J Clin Endocrinol Metab 2010; 95: 1690-1698
• 20 Kersh ME, Schache AG, Pandy MG. Strain energy in the femoral neck during exercise. J Biomech 2014; 47: 1784-1791
• 21 Khosla S, Melton 3rd LJ, Dekutoski MB, Achenbach SJ, Oberg AL, Riggs BL. Incidence of childhood distal forearm fractures over 30 years: a population-based study. Jama 2003; 290: 1479-1485
• 22 Kirmani S, Christen D, van Lenthe GH, Fischer PR, Bouxsein ML, McCready LK, Melton 3rd LJ, Riggs BL, Amin S, Müller R, Khosla S. Bone structure at the distal radius during adolescent growth. J Bone Miner Res 2009; 24: 1033-1042
• 23 Kriemler S, Zahner L, Puder JJ, Braun-Fahrländer C, Schindler C, Farpour-Lambert NJ, Kränzlin M, Rizzoli R. Weight-bearing bones are more sensitive to physical exercise in boys than in girls during pre- and early puberty: a cross-sectional study. Osteoporos Int 2008; 19: 1749-1758
• 24 Lara-Sánchez AJ, Zagalaz ML, Berdejo-Del-Fresno D, Martínez-López EJ. Jump peak power assessment through power prediction equations in different samples. J Strength Cond Res 2011; 25: 1957-1962
• 25 Macdonald HM, Kontulainen SA, Petit MA, Beck TJ, Khan KM, McKay HA. Does a novel school-based physical activity model benefit femoral neck bone strength in pre- and early pubertal children?. Osteoporos Int 2008; 19: 1445-1456
• 26 Munukka M, Waller B, Multanen J, Rantalainen T, Häkkinen A, Nieminen MT, Lammentausta E, Kujala UM, Paloneva J, Kautiainen H, Kiviranta I, Heinonen A. Relationship between lower limb neuromuscular performance and bone strength in postmenopausal women with mild knee osteoarthritis. J Musculoskelet Neuronal Interact 2014; 14: 418-424
• 27 Quagliarella L, Sasanelli N, Belgiovine G, Moretti L, Moretti B. Power output estimation in vertical jump performed by young male soccer players. J Strength Cond Res 2011; 25: 1638-1646
• 28 Randsborg PH, Gulbrandsen P, Saltytė Benth J, Sivertsen EA, Hammer OL, Fuglesang HF, Arøen A. Fractures in children: Epidemiology and activity-specific fracture rates. J Bone Joint Surg Am 2013; 95: e42
• 29 Rantalainen T, Nikander R, Heinonen A, Multanen J, Häkkinen A, Jämsä T, Kiviranta I, Linnamo V, Komi PV, Sievänen H. Neuromuscular performance and body mass as indices of bone loading in premenopausal and postmenopausal women. Bone 2010; 46: 964-969
• 30 Rantalainen T, Sievänen H, Linnamo V, Hoffrén M, Ishikawa M, Kyröläinen H, Avela J, Selänne H, Komi PV, Heinonen A. Bone rigidity to neuromuscular performance ratio in young and elderly men. Bone 2009; 45: 956-963
• 31 Schoenau E, Frost HM. The “muscle-bone unit” in children and adolescents. Calcif Tissue Int 2002; 70: 405-407
• 32 Smith JJ, Eather N, Morgan PJ, Plotnikoff RC, Faigenbaum AD, Lubans DR. The health benefits of muscular fitness for children and adolescents: a systematic review and meta-analysis. Sports Med 2014; 44: 1209-1223
• 33 The Cooper Institute . FITNESSGRAM/ACTIVITYGRAM Test Administration Manual. 4^th edn. Champaign, IL: Human Kinetics; 2010: 8.1-8.52
• 34 Tucker LA, Strong JE, LeCheminant JD, Bailey BW. Effect of two jumping programs on hip bone mineral density in premenopausal women: a randomized controlled trial. Am J Health Promot 2015; 29: 158-164
• 35 Vicente-Rodriguez G, Urzanqui A, Mesana MI, Ortega FB, Ruiz JR, Ezquerra J, Casajús JA, Blay G, Blay VA, Gonzalez-Gross M, Moreno LA. Physical fitness effect on bone mass is mediated by the independent association between lean mass and bone mass through adolescence: a cross-sectional study. J Bone Miner Metab 2008; 26: 288-294
• 36 Wang Q, Wang XF, Iuliano-Burns S, Ghasem-Zadeh A, Zebaze R, Seeman E. Rapid growth produces transient cortical weakness: a risk factor for metaphyseal fractures during puberty. J Bone Miner Res 2010; 25: 1521-1526
• 37 Warsh J, Pickett W, Janssen I. Are overweight and obese youth at increased risk for physical activity injuries?. Obes Facts 2010; 3: 225-230
• 38 Weeks BK, Young CM, Beck BR. Eight months of regular in-school jumping improves indices of bone strength in adolescent boys and girls: the POWER PE study. J Bone Miner Res 2008; 23: 1002-1011
• 39 Wren TA, Kalkwarf HJ, Zemel BS, Lappe JM, Oberfield S, Shepherd JA, Winer KK, Gilsanz V. Bone Mineral Density in Childhood Study Group . Longitudinal tracking of dual-energy X-ray absorptiometry bone measures over 6 years in children and adolescents: persistence of low bone mass to maturity. J Pediatr 2014; 164: 1280-1285
• 40 Yeh FJ, Grant AM, Williams SM, Goulding A. Children who experience their first fracture at a young age have high rates of fracture. Osteoporos Int 2006; 17: 267-272
• 41 Zribi A, Zouch M, Chaari H, Bouajina E, Ben Nasr H, Zaouali M, Tabka Z. Short-term lower-body plyometric training improves whole body BMC, bone metabolic markers, and physical fitness in early pubertal male basketball players. Pediatr Exerc Sci 2014; 26: 22-32