Effect of range of motion in heavy load squatting on muscle and tendon adaptations

TY - JOUR

T1 - Effect of range of motion in heavy load squatting on muscle and tendon adaptations

AU - Bloomquist, K

AU - Langberg, Henning

AU - Karlsen, Stine

AU - Madsgaard, S

AU - Boesen, M

AU - Raastad, T

PY - 2013/8

Y1 - 2013/8

N2 - Manipulating joint range of motion during squat training may have differential effects on adaptations to strength training with implications for sports and rehabilitation. Consequently, the purpose of this study was to compare the effects of squat training with a short vs. a long range of motion. Male students (n = 17) were randomly assigned to 12 weeks of progressive squat training (repetition matched, repetition maximum sets) performed as either a) deep squat (0-120° of knee flexion); n = 8 (DS) or (b) shallow squat (0-60 of knee flexion); n = 9 (SS). Strength (1 RM and isometric strength), jump performance, muscle architecture and cross-sectional area (CSA) of the thigh muscles, as well as CSA and collagen synthesis in the patellar tendon, were assessed before and after the intervention. The DS group increased 1 RM in both the SS and DS with ~20 ± 3 %, while the SS group achieved a 36 ± 4 % increase in the SS, and 9 ± 2 % in the DS (P

AB - Manipulating joint range of motion during squat training may have differential effects on adaptations to strength training with implications for sports and rehabilitation. Consequently, the purpose of this study was to compare the effects of squat training with a short vs. a long range of motion. Male students (n = 17) were randomly assigned to 12 weeks of progressive squat training (repetition matched, repetition maximum sets) performed as either a) deep squat (0-120° of knee flexion); n = 8 (DS) or (b) shallow squat (0-60 of knee flexion); n = 9 (SS). Strength (1 RM and isometric strength), jump performance, muscle architecture and cross-sectional area (CSA) of the thigh muscles, as well as CSA and collagen synthesis in the patellar tendon, were assessed before and after the intervention. The DS group increased 1 RM in both the SS and DS with ~20 ± 3 %, while the SS group achieved a 36 ± 4 % increase in the SS, and 9 ± 2 % in the DS (P

KW - Adaptation, Physiological

KW - Humans

KW - Leg

KW - Male

KW - Muscle, Skeletal

KW - Range of Motion, Articular

KW - Resistance Training

KW - Tendons

KW - Young Adult

U2 - 10.1007/s00421-013-2642-7

DO - 10.1007/s00421-013-2642-7

M3 - Journal article

C2 - 23604798

SN - 8750-7587

VL - 113

SP - 2133

EP - 2142

JO - Journal of Applied Physiology

JF - Journal of Applied Physiology

IS - 8

ER -