TY - JOUR
T1 - Normative Values of Muscle Power using Force Plate Jump Tests in Men Aged 77-101 Years
T2 - The Osteoporotic Fractures in Men (MrOS) Study
AU - Strotmeyer, E. S.
AU - Winger, M. E.
AU - Cauley, J. A.
AU - Boudreau, R. M.
AU - Cusick, D.
AU - Collins, R. F.
AU - Chalhoub, D.
AU - Buehring, B.
AU - Orwoll, E.
AU - Harris, T. B.
AU - Caserotti, P.
N1 - Publisher Copyright:
© 2018 Serdi and Springer-Verlag France SAS, part of Springer Nature
PY - 2018
Y1 - 2018
N2 - OBJECTIVE: To determine normative values for weight-bearing, countermovement leg extension ("jump") tests in the oldest men and characteristics of those not completing vs. completing tests. DESIGN: 2014-16 cross-sectional exam. SETTING: Six U.S. sites from the Osteoporotic Fractures in Men (MrOS) Study. PARTICIPANTS: Community-dwelling men (N=1,841) aged 84.5±4.2 (range: 77-101) years.N/A. MEASUREMENTS: Jump tests on a force plate measured lower-extremity muscle peak power/kg, velocity and force/kg at peak power, with normative values for 5-year age groups and by limitations in moderate-intensity activities of daily living (ADLs) and climbing several flights of stairs. RESULTS: Jump completion was 68.9% (N=1,268/1,841) and 98% (1,242/1,268) had ≥1 analyzable trial/participant. Exclusions primarily were due to poor mobility and/or balance: 24.8% (456/1,841) prior to and 6.4% (N=117/1,841) after attempting testing. Peak power was 20.8±5.3 W/kg, with 1.2±0.3 m/s for velocity, and 16.7±1.9 N/kg for force at peak power. Each 5-year age group >80 years had subsequently 10% lower power/kg, with 30% lower power/kg at >90 vs. ≤80 years (all p<0.05). Velocity and force/kg at peak power were 24% and 9% lower respectively, at >90 vs. ≤80 years (all p<0.05). Limitations in both moderate ADLs and climbing several flights of stairs were associated with 16% lower age-adjusted power/kg, equivalent to 5-10 years of aging, with 11% and 6% lower age-adjusted velocity and force/kg respectively, vs. those without limitation (all p<0.05). Men not completing vs. completing jumps had older age, higher BMI, lower physical activity, more comorbidities, worse cognition, more IADLs/ADLs and more falls in the past year (all p<0.05). Post-jump pain occurred in 4.6% (58/1,268), with 2 participants stopping testing due to pain. Only 24/1,242 (2%) had all trials/participant without flight (i.e., inability to lift feet), with 323/1,242 having ≥1 trial/participant without flight (total of 28%). No serious adverse safety events (e.g., injury) occurred. CONCLUSIONS: A multicenter cohort of oldest men with a range of function had higher declines in jump power/kg and velocity vs. force/kg across each 5-year age group >80 years. Future research should examine age- and functional-related declines in jump measures related to physical performance decline, falls, fractures, and disability.
AB - OBJECTIVE: To determine normative values for weight-bearing, countermovement leg extension ("jump") tests in the oldest men and characteristics of those not completing vs. completing tests. DESIGN: 2014-16 cross-sectional exam. SETTING: Six U.S. sites from the Osteoporotic Fractures in Men (MrOS) Study. PARTICIPANTS: Community-dwelling men (N=1,841) aged 84.5±4.2 (range: 77-101) years.N/A. MEASUREMENTS: Jump tests on a force plate measured lower-extremity muscle peak power/kg, velocity and force/kg at peak power, with normative values for 5-year age groups and by limitations in moderate-intensity activities of daily living (ADLs) and climbing several flights of stairs. RESULTS: Jump completion was 68.9% (N=1,268/1,841) and 98% (1,242/1,268) had ≥1 analyzable trial/participant. Exclusions primarily were due to poor mobility and/or balance: 24.8% (456/1,841) prior to and 6.4% (N=117/1,841) after attempting testing. Peak power was 20.8±5.3 W/kg, with 1.2±0.3 m/s for velocity, and 16.7±1.9 N/kg for force at peak power. Each 5-year age group >80 years had subsequently 10% lower power/kg, with 30% lower power/kg at >90 vs. ≤80 years (all p<0.05). Velocity and force/kg at peak power were 24% and 9% lower respectively, at >90 vs. ≤80 years (all p<0.05). Limitations in both moderate ADLs and climbing several flights of stairs were associated with 16% lower age-adjusted power/kg, equivalent to 5-10 years of aging, with 11% and 6% lower age-adjusted velocity and force/kg respectively, vs. those without limitation (all p<0.05). Men not completing vs. completing jumps had older age, higher BMI, lower physical activity, more comorbidities, worse cognition, more IADLs/ADLs and more falls in the past year (all p<0.05). Post-jump pain occurred in 4.6% (58/1,268), with 2 participants stopping testing due to pain. Only 24/1,242 (2%) had all trials/participant without flight (i.e., inability to lift feet), with 323/1,242 having ≥1 trial/participant without flight (total of 28%). No serious adverse safety events (e.g., injury) occurred. CONCLUSIONS: A multicenter cohort of oldest men with a range of function had higher declines in jump power/kg and velocity vs. force/kg across each 5-year age group >80 years. Future research should examine age- and functional-related declines in jump measures related to physical performance decline, falls, fractures, and disability.
KW - Epidemiology
KW - functional performance
KW - jump
KW - muscle
UR - http://www.scopus.com/inward/record.url?scp=85049586987&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049586987&partnerID=8YFLogxK
U2 - 10.1007/s12603-018-1081-x
DO - 10.1007/s12603-018-1081-x
M3 - Article
C2 - 30498822
AN - SCOPUS:85049586987
SN - 1279-7707
VL - 22
SP - 1167
EP - 1175
JO - Journal of Nutrition, Health and Aging
JF - Journal of Nutrition, Health and Aging
IS - 10
ER -