Robert W Spitz, Vickie Wong, Yujiro Yamada, Ryo Kataoka, Jun Seob Song, William B Hammert, Aldo Seffrin, Zachary W Bell, Jeremy P Loenneke
{"title":"有无血流限制的等长握手训练对静息血压变化的影响","authors":"Robert W Spitz, Vickie Wong, Yujiro Yamada, Ryo Kataoka, Jun Seob Song, William B Hammert, Aldo Seffrin, Zachary W Bell, Jeremy P Loenneke","doi":"10.1080/02701367.2024.2418567","DOIUrl":null,"url":null,"abstract":"<p><p>To investigate the effects of high-intensity contractions and low-intensity contractions with and without blood flow restriction on changes in blood pressure and hemodynamic parameters. A total of 179 participants (18-35 years) were randomly assigned to one of three training groups that exercised 3 times per week for six weeks or a non-exercise control group. The groups are as follows: 1) Control [CON, <i>n</i> = 44]; 2) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction [LI, <i>n</i> = 47]; 3) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction with a 12 cm cuff inflated to 50% of arterial occlusion pressure [LI+BFR, <i>n</i> = 41]; or 4) completed 4 maximal isometric contractions lasting 5 seconds [MAX, <i>n</i> = 47]. Blood pressure, vascular resistance, and reactive hyperemia were measured at pre and post. Data are presented as means (SD). There was no evidence that SBP (BF<sub>10</sub>: 0.066), DBP (BF<sub>10</sub>: 0.057), vascular resistance (BF<sub>10</sub>: 0.085), or peak reactive hyperemia changed (BF<sub>10</sub>: 0.044) or A.U.C. (BF<sub>10</sub>: 0.074). Change scores for SBP were 1.1 (6.7), 0.7 (5.8), -0.4 (6.5), and -0.9 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. DBP change scores were 1.5 (6.6), 1.5 (7), -0.7 (5.9), and 0.3 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. Although recommended as a non-pharmacological method of blood pressure control, isometric exercise with or without BFR did not lower blood pressure. Future work could examine the inclusion of a daily strength test prior to the low intensity protocol.</p>","PeriodicalId":94191,"journal":{"name":"Research quarterly for exercise and sport","volume":" ","pages":"1-8"},"PeriodicalIF":0.0000,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Effect of Isometric Handgrip Training With and Without Blood Flow Restriction on Changes in Resting Blood Pressure.\",\"authors\":\"Robert W Spitz, Vickie Wong, Yujiro Yamada, Ryo Kataoka, Jun Seob Song, William B Hammert, Aldo Seffrin, Zachary W Bell, Jeremy P Loenneke\",\"doi\":\"10.1080/02701367.2024.2418567\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>To investigate the effects of high-intensity contractions and low-intensity contractions with and without blood flow restriction on changes in blood pressure and hemodynamic parameters. A total of 179 participants (18-35 years) were randomly assigned to one of three training groups that exercised 3 times per week for six weeks or a non-exercise control group. The groups are as follows: 1) Control [CON, <i>n</i> = 44]; 2) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction [LI, <i>n</i> = 47]; 3) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction with a 12 cm cuff inflated to 50% of arterial occlusion pressure [LI+BFR, <i>n</i> = 41]; or 4) completed 4 maximal isometric contractions lasting 5 seconds [MAX, <i>n</i> = 47]. Blood pressure, vascular resistance, and reactive hyperemia were measured at pre and post. Data are presented as means (SD). There was no evidence that SBP (BF<sub>10</sub>: 0.066), DBP (BF<sub>10</sub>: 0.057), vascular resistance (BF<sub>10</sub>: 0.085), or peak reactive hyperemia changed (BF<sub>10</sub>: 0.044) or A.U.C. (BF<sub>10</sub>: 0.074). Change scores for SBP were 1.1 (6.7), 0.7 (5.8), -0.4 (6.5), and -0.9 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. DBP change scores were 1.5 (6.6), 1.5 (7), -0.7 (5.9), and 0.3 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. Although recommended as a non-pharmacological method of blood pressure control, isometric exercise with or without BFR did not lower blood pressure. Future work could examine the inclusion of a daily strength test prior to the low intensity protocol.</p>\",\"PeriodicalId\":94191,\"journal\":{\"name\":\"Research quarterly for exercise and sport\",\"volume\":\" \",\"pages\":\"1-8\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-11-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research quarterly for exercise and sport\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1080/02701367.2024.2418567\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research quarterly for exercise and sport","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/02701367.2024.2418567","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Effect of Isometric Handgrip Training With and Without Blood Flow Restriction on Changes in Resting Blood Pressure.
To investigate the effects of high-intensity contractions and low-intensity contractions with and without blood flow restriction on changes in blood pressure and hemodynamic parameters. A total of 179 participants (18-35 years) were randomly assigned to one of three training groups that exercised 3 times per week for six weeks or a non-exercise control group. The groups are as follows: 1) Control [CON, n = 44]; 2) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction [LI, n = 47]; 3) completed 4 sets of two-minute isometric contractions at 30% maximal voluntary contraction with a 12 cm cuff inflated to 50% of arterial occlusion pressure [LI+BFR, n = 41]; or 4) completed 4 maximal isometric contractions lasting 5 seconds [MAX, n = 47]. Blood pressure, vascular resistance, and reactive hyperemia were measured at pre and post. Data are presented as means (SD). There was no evidence that SBP (BF10: 0.066), DBP (BF10: 0.057), vascular resistance (BF10: 0.085), or peak reactive hyperemia changed (BF10: 0.044) or A.U.C. (BF10: 0.074). Change scores for SBP were 1.1 (6.7), 0.7 (5.8), -0.4 (6.5), and -0.9 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. DBP change scores were 1.5 (6.6), 1.5 (7), -0.7 (5.9), and 0.3 (6.3) mmHg for CON, LI, LI+BFR, and MAX, respectively. Although recommended as a non-pharmacological method of blood pressure control, isometric exercise with or without BFR did not lower blood pressure. Future work could examine the inclusion of a daily strength test prior to the low intensity protocol.