Arm and Intensity-Matched Leg Exercise Induce Similar Inflammatory Responses

作者：Leicht Christof A; Paulson Thomas A W; Goosey Tolfrey Victoria L; Bishop Nicolette C

来源：Medicine and Science in Sports and Exercise, 2016, 48(6): 1161-1168.

DOI：10.1249/MSS.0000000000000874

• CYTOKINES
• CHEMOKINES
• SYMPATHETIC ACTIVATION
• INFLAMMATION
• MONOCYTES
• UPPER BODY EXERCISE

Introduction The amount of active muscle mass can influence the acute inflammatory response to exercise, associated with reduced risk for chronic disease. This may affect those restricted to upper body exercise, for example, due to injury or disability. The purpose of this study was to compare the inflammatory responses for arm exercise and intensity-matched leg exercise.
Methods Twelve male individuals performed three 45-min constant load exercise trials after determination of peak oxygen uptake for arm exercise (VO2peak A) and cycling (VO2peak C): 1) arm cranking exercise at 60% VO2peak A, 2) moderate cycling at 60% VO2peak C, and 3) easy cycling at 60% VO2peak A. Cytokine, adrenaline, and flow cytometric analysis of monocyte subsets were performed before and up to 4 h postexercise.
Results Plasma IL-6 increased from resting concentrations in all trials; however, postexercise concentrations were higher for arm exercise (1.73 1.04 pgmL(-1)) and moderate cycling (1.73 +/- 0.95 pgmL(-1)) compared with easy cycling (0.87 +/- 0.41 pgmL(-1); P < 0.04). Similarly, the plasma IL-1ra concentration in the recovery period was higher for arm exercise (325 +/- 139 pgmL(-1)) and moderate cycling (316 +/- 128 pgmL(-1)) when compared with easy cycling (245 +/- 77 pgmL(-1), P < 0.04). Arm exercise and moderate cycling induced larger increases in monocyte numbers and larger increases of the classical monocyte subset in the recovery period than easy cycling (P < 0.05). The postexercise adrenaline concentration was lowest for easy cycling (P = 0.04).
Conclusions Arm exercise and cycling at the same relative exercise intensity induces a comparable acute inflammatory response; however, cycling at the same absolute oxygen uptake as arm exercise results in a blunted cytokine, monocyte, and adrenaline response. Relative exercise intensity appears to be more important to the acute inflammatory response than modality, which is of major relevance for populations restricted to upper body exercise.

• 出版日期2016-6