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ORDER OF RESISTANCE AND CARDIORESPIRATORY TRAINING IN CANCER SURVIVORS

Abstract

Physical activity (PA), including cardiorespiratory and resistance training, reduces cancer risk and boosts physical fitness and strength in cancer survivors (CS). The order of exercise may affect the benefits, since fatigue from the first exercise mode may affect the adaptations possible from the second mode. PURPOSE: To determine which order of resistance or cardio first is most beneficial in CS during a ten-week supervised PA intervention. METHODS: 24 CS (male=5 and female=19, age=69.2yr) were randomized into 2 groups: resistance first then cardio (G1) and cardio first then resistance (G2) for 25-30 min each. Pre- and post-tests included the 7-site skinfold test (7SS), twenty-step test (TST), 8-foot up and go test (8FT), 6-minute walk test (6MWT), seated medicine ball throw (SMBT), plank test (P), crunches (C), sit-to-stand test (SS), sit-and-reach (SR), and biceps curl test (BC). RESULTS: For the BC, statistical differences (RMANOVA) were seen for the overall group over time (p<.001 for left and p=.017 for right), with all participants increasing from 16.54±5.22reps to 18.00±5.58reps for the left and 17.08±4.36reps to 19.04±4.93reps for the right. The P had statistically significant differences for the overall group over time (n=21, p=0.032), with time increasing from 39.55±19.20s to 50.61±17.05s. C were statistically different for the overall group over time (n=18, p=.048), with reps increasing from 18.17±10.05 to 27.94±14.73. The SMBT had statistically significant improvements in distance over time (p=.001) from 2.00±.84m to 2.33±.86m. The 6MWT was statistically significant with increases in walking distances for the whole group (p< .001) from 452.97±89.93m to 516.64±107.25m. All subjects over time had a statistically significant difference in the 7SS (n=23), with a decrease in body fat percent (p< .001, from 35.55±10.13% to 27.92±5.95%), a decrease in fat mass (p=.001, from 27.12±10.20kg to 21.39±7.24kg), and an increase in lean body mass (p=.001 from 47.90±10.80kg to 53.44±9.38kg). CONCLUSION: There were no notable differences observed between groups. Physical fitness, strength, and body composition significantly improved over time for the whole group. The difference in benefits between beginning with cardio or resistance training first requires further exploration.

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