Roller-massager application to the quadriceps and knee-joint range of motion and neuromuscular efficiency during a lunge

J Athl Train. 2015 Feb;50(2):133-40. doi: 10.4085/1062-6050-49.5.03. Epub 2014 Nov 21.

Abstract

Context: Roller massagers are used as a recovery and rehabilitative tool to initiate muscle relaxation and improve range of motion (ROM) and muscular performance. However, research demonstrating such effects is lacking.

Objective: To determine the effects of applying a roller massager for 20 and 60 seconds on knee-joint ROM and dynamic muscular performance.

Design: Randomized controlled clinical trial.

Setting: University laboratory.

Patients or other participants: Ten recreationally active men (age = 26.6 ± 5.2 years, height = 175.3 ± 4.3 cm, mass = 84.4 ± 8.8 kg).

Intervention(s): Participants performed 3 randomized experimental conditions separated by 24 to 48 hours. In condition 1 (5 repetitions of 20 seconds) and condition 2 (5 repetitions of 60 seconds), they applied a roller massager to the quadriceps muscles. Condition 3 served as a control condition in which participants sat quietly.

Main outcome measure(s): Visual analog pain scale, electromyography (EMG) of the vastus lateralis (VL) and biceps femoris during roller massage and lunge, and knee-joint ROM.

Results: We found no differences in pain between the 20-second and 60-second roller-massager conditions. During 60 seconds of roller massage, pain was 13.5% (5.7 ± 0.70) and 20.6% (6.2 ± 0.70) greater at 40 seconds and 60 seconds, respectively, than at 20 seconds (P < .05). During roller massage, VL and biceps femoris root mean square (RMS) EMG was 8% and 7%, respectively, of RMS EMG recorded during maximal voluntary isometric contraction. Knee-joint ROM was 10% and 16% greater in the 20-second and 60-second roller-massager conditions, respectively, than the control condition (P < .05). Finally, average lunge VL RMS EMG decreased as roller-massage time increased (P < .05).

Conclusions: Roller massage was painful and induced muscle activity, but it increased knee-joint ROM and neuromuscular efficiency during a lunge.

Keywords: electromyography; flexibility; muscle activation; pain; stretch.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Electromyography / methods
  • Equipment Design
  • Humans
  • Isometric Contraction / physiology
  • Knee Joint* / physiology
  • Knee Joint* / physiopathology
  • Male
  • Massage* / adverse effects
  • Massage* / instrumentation
  • Massage* / methods
  • Musculoskeletal Pain* / diagnosis
  • Musculoskeletal Pain* / etiology
  • Musculoskeletal Pain* / physiopathology
  • Pain Measurement
  • Quadriceps Muscle* / physiology
  • Quadriceps Muscle* / physiopathology
  • Range of Motion, Articular / physiology*
  • Thigh / physiology
  • Thigh / physiopathology
  • Time Factors
  • Treatment Outcome